Toshiba MMC-AP0151H Service Manual Download Page 193

Page: 193 / 270

193

Check code name

[P12] / [11]

(d07 / AI-NET)

Check code name

Indoor fan motor error

Cause of operation

1. Cabling error of fan motor connector

2. Fan motor error

3. Indoor P.C. board error

Turn off power supply.

Correct connector connection.

Check indoor P.C. board (MCC-1402).

Failure

Replace

Is resistance value at motor side of

fan motor connector CN334 on indoor P.C. board

(MCC-1402) correct? *2

Is resistance value between each phase

at motor side of fan motor connector CN333 on

indoor P.C. board (MCC-1402) correct? *1

Is there connection error or

disconnection on connector CN333, CN334

of indoor P.C. board (MCC-1402)?

Is output of indoor fan motor position

detective signal correct? *3

Does fan turn without trouble

when turning it with hands?

Remove connectors CN333 and CN334

on indoor P.C. board (MCC-1402).

*2
Check resistance value of fan motor position detective circuit.
• Is not winding 1 (Yellow lead) to 4 (Pink lead) opened/shorted?

Resistance should be 5 to 20k

*3
Check fan motor position detective signal.

• Measure voltage with tester between CN334 1 and 5 on indoor P.C. board (MCC-1402)

under condition of CN333 and CN334 installed and power-ON.

Turn fan slowly with hands so that pin voltage

fluctuates

between 0 and 5V.

• Between 4 and 5: 5V

*1
• Is not winding 1 (Red lead) to 3 (White lead), 3 (White lead) to 5 (Black lead),

5 (Black lead) to 1 (Red lead) opened/shorted?

Resistance value should satisfy the follows.

[4-way Air Discharge Cassette type]
MMU-AP0091H, AP0301

Approx. 70 to 100

MMU-AP0361H, AP0561

Approx. 35 to 50

[Concealed Duct Standard type]
15 to 35

• Is not grounded between cabinet and 1, 3, 5?

Should be

10 or more

* Detectable in model with DC fan motor

(4-way Air Discharge Cassette, or Concealed Duct Standard type)

Replace indoor fan motor.

CN333

CN334

YES

Summary of Contents for MMC-AP0151H

Page 1: ...re Type MMD AP0181H AP0241H AP0271H MMD AP0361H AP0481H AP0721H MMD AP0961H Under Ceiling Type MMC AP0151H AP0181H AP0241H MMC AP0271H AP0361H AP0481H High Wall Type MMK AP0071H AP0091H AP0121H MMK AP0151H AP0181H AP0241H Floor Standing Cabinet Type MML AP0071H AP0091H AP0121H MML AP0151H AP0181H AP0241H Floor Standing Concealed Type MML AP0071BH AP0091BH AP0121BH MML AP0151BH AP0181BH AP0241BH Fl...

Page 2: ...s to be installed requires a design that in the event of refrigerant gas leaking out its concentration will not exceed a set limit The refrigerant R410A which is used in the air conditioner is safe without the toxicity or combustibility of ammonia and is not restricted by laws to be imposed which protect the ozone layer However since it contains more than air it poses the risk of suffocation if it...

Page 3: ...to clear P12 error code using the leak breaker of the indoor unit Then push the operation stop button of the remote controller to return to the usual operation CONTENTS SAFETY CAUTION 4 1 OUTLINE 10 2 WIRING DIAGRAM 13 3 PARTS RATING 26 4 REFRIGERANT PIPING SYSTEMATIC DRAWING 56 5 COMBINED REFRIGERANT PIPES SYSTEMATIC DRAWING 59 6 CONTROL OUTLINE 64 7 APPLIED CONTROL 74 8 TEST OPERATION 88 9 TROUB...

Page 4: ...ory items to do The sentences near an illustrated mark describe the concrete mandatory contents Indicates cautions including danger warning The sentences or illustration near or in an illustrated mark describe the concrete cautious contents Confirmation of warning label on the main unit Confirm that labels are indicated on the specified positions Refer to the Parts disassembly diagram Outdoor unit...

Page 5: ...never use R410A If different types of refrigerant are mixed abnormal high pressure generates in the refriger ating cycle and an injury due to breakage may be caused Do not charge refrigerant additionally If charging refrigerant additionally when refrigerant gas leaks the refrigerant composition in the refrigerating cycle changes resulted in change of air conditioner characteristics or refrigerant ...

Page 6: ...it even if the refrigerant leaks If the refrigerant leaks and exceeds the limit density an accident of shortage of oxygen is caused For the installation moving reinstallation work follow to the Installation Manual If an incorrect installation is done a trouble of the refrigerating cycle water leak electric shock or fire is caused After repair work has finished check there is no trouble If check is...

Page 7: ...others do not mix in because pipes are affected by impurities such as water oxide scales oil etc Use the clean pipes Be sure to brazing with flowing nitrogen gas Never use gas other than nitrogen gas 4 For the earth protection use a vacuum pump for air purge 5 R410A refrigerant is azeotropic mixture type refrigerant Therefore use liquid type to charge the refrigerant If using gas for charging comp...

Page 8: ...heck etc Vacuum evacuating Refrigerant charge Refrigerant charge Gas leakage check Refrigerant charge Conventional air conditioner installation Whether new equipment can be used with conventional refrigerant Yes Note 1 No No Yes Yes No Yes No Whether conven tional equipment can be used Note 1 Note 1 No No No Yes No No No 1 Vacuum pump Use vacuum pump by attaching vacuum pump adapter 2 Torque wrenc...

Page 9: ...d Brazed Service port Service port Ø6 4 Copper pipe Ø6 4 Copper pipe Fully tightened Fully tightened Reducing valve Nitrogen gas Valve fully closed liquid side Valve fully closed balance Connected to other terminal units Charge the refrigerant as below Recover the refrigerant and check there is no refrigerant in the equipment Leave it as it is for 1 to 2 minutes and check the indicator of the comp...

Page 10: ... HP 12 HP 10 HP 8 HP 10 HP 10 HP 8 HP 10 HP 8 HP 12 HP 10 HP 8 HP 8 HP 10 HP 8 HP 10 HP 8 HP 10 HP 8 HP Combined outdoor units 8 HP 8 HP 8 HP No of connectable indoor units 43 47 48 48 48 48 48 48 Corresponding HP 36 HP 38 HP 40 HP 42 HP 44 HP 46 HP 48 HP MMY AP3611HT8 AP3801HT8 AP4001HT8 AP4201HT8 AP4401HT8 AP4601HT8 AP4801HT8 MMY AP3611HT7 AP3801HT7 AP4001HT7 AP4201HT7 AP4401HT7 AP4601HT7 AP4801...

Page 11: ...ct Standard Type MMD AP0561BH 056 type 6 16 0 18 0 MMD AP0181H 018 type 2 5 6 6 3 MMD AP0241H 024 type 2 5 7 1 8 0 MMD AP0271H 027 type 3 8 0 9 0 MMD AP0361H 036 type 4 11 2 12 5 MMD AP0481H 048 type 5 14 0 16 0 MMD AP0721H 072 type 8 22 4 25 0 Concealed Duct High Static Pressure Type MMD AP0961H 096 type 10 28 0 31 5 MMC AP0151H 015 type 1 7 4 5 5 0 MMC AP0181H 018 type 2 5 6 6 3 MMC AP0241H 024 ...

Page 12: ...rge type RBC AX22CE Under Ceiling type TCB AX21E Separate sensor type Receiver section UNIT SET CL SETTING UNIT No CODE No TEST SET DATA R C No C F TEST SETTING WEEKLY TIMER ERROR SuMoTuWeTh Fr Sa PROGRAM1 PROGRAM2 PROGRAM3 ADR ADR ADR Receiver section Receiver section laid separately Name Appearance Model name Type Central remote controller TCB SC642TLE 64 system center controller SELECT ZONE CL ...

Page 13: ... 3 1 2 3 1 2 3 1 2 1 2 1 2 3 Fuse T6 3A 250V Fuse T3 15A 250V DC15V DC12V DC7V P301 BLK RED WHI WHI RED S N R L Power supply Single phase 220 240V 50Hz 220V 60Hz Indoor unit Earth screw DM FM Power supply circuit Motor drive circuit Parts name Fan motor Indoor temp sensor Temp sensor Temp sensor Temp sensor Lover motor Drain pump motor Float switch Drain control relay Pulse Motor Valve Color ident...

Page 14: ... Power supply Single phase 220 240V 50Hz 220V 60Hz Indoor unit Earth screw Outdoor unit BLU BLU BLK BLK U1 U2 U1 Flow selector unit earth screw Power supply circuit CN01 WHI CN02 YEL Sub P C board MCC 1520 Symbol FM RC TR LM TA TC1 TC2 TCJ RY001 RY002 RY004 RY005 007 FS DM PMV Parts name Fan motor Running capacitor Transformer Louver motor Indoor temp sensor Temp sensor Louver control relay Drain ...

Page 15: ... BLU BLU RED WHI BLK BLK U1 U2 U1 Power supply circuit Network adaptor P C board Symbol FM RC TR LM TA TC1 TCJ RY001 RY002 RY004 RY005 007 FS DM PMV Parts name Fan motor Running capacitor Power transformer Louver motor Indoor temp sensor Temp sensor Flap motor control relay Drain pump control relay Heater control relay Fan motor control relay Float switch Drain pump motor Pulse Motor Valve LM GRN ...

Page 16: ... CN101 BLK CN100 BRW 1 3 CN080 GRN TC2 PNL EXCT 2 1 CN073 RED 2 2 1 FILTER CN070 WHI CN081 BLK 2 1 2 1 2 1 1 1 2 2 1 1 2 2 1 1 2 2 1 1 2 X Y 2 3 2 1 1 3 1 1 2 3 3 1 2 3 4 5 1 2 3 4 5 6 1 2 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 2 1 4 3 5 2 1 TC1 CN066 WHI AC IN CN044 BRW CN040 BLU Outdoor unit Remote Controller Power supply single phase 220 240V 50Hz 220V 60Hz Indoor unit earth screw Closed end conne...

Page 17: ...50V DC15V DC12V DC7V P301 BLK RED WHI WHI WHI RED Wired remote controller 1 2 B A S N R L U2 1 2 CN1 WHI CN001 WHI Indoor unit power supply Single phase 220 240V 50Hz 220V 60Hz Indoor unit Earth screw WHI Outdoor unit BLK WHI BLK BLK BLU BLU BLK BLK TR WHI U1 U2 U1 DM Power supply circuit Motor drive circuit CN01 WHI CN02 BLU CN03 RED Network adaptor Option 1 2 1 2 1 2 1 2 X Y 3 3 2 2 1 1 Network ...

Page 18: ... CN104 YEL FS CN030 RED 1 2 1 2 RY001 TR OC EMG RC Fuse T5 0A T10A 250V 1 2 3 1 2 3 CN309 YEL 1 2 3 1 2 3 RED WHI H M L UL 1 indicates the terminal block letter at inside indicates the terminal number 2 A dotted line and broken line indicate the wiring at site 3 indicates the control P C board 4 When attaching a drain pump exchange CN030 connector with a connector of the float switch 5 A part is c...

Page 19: ...1 3 1 3 1 6 8 7 2 1 1 1 2 2 1 2 1 1 2 2 1 1 2 X Y 2 3 2 1 1 3 1 1 2 3 3 1 2 3 4 5 1 2 3 4 5 6 1 2 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 CN066 WHI CN067 BLK AC IN RED WHI CN044 BRW EMG Remote Controller Power supply single phase 220 240V 50Hz 220V 60Hz Indoor unit earth screw Closed end connector Closed end connector Line Filter WHI RED RED WHI RED WHI WHI CN01 WHI CN03 RED CN02 BLU CN040 BLU CN041 B...

Page 20: ...A 250V Fuse T3 15A DC15V DC12V DC7V P301 BLK RED WHI Closed end terminal RED WHI Wired remote controller Outdoor unit 1 2 B A U2 U1 U2 U1 1 2 CN1 WHI CN001 WHI Indoor unit Earth screw WHI BLK BLK WHI BLK TR BLU WHI BLU BLK BLK DM FM Power supply circuit Motor drive circuit CN01 WHI CN02 BLU CN03 RED Network adaptor Option 1 2 1 2 1 2 1 2 X Y 3 3 2 2 1 1 Network adaptor P C board Color identificati...

Page 21: ...1 2 3 4 5 6 CN60 WHI 1 2 3 4 5 6 CN61 YEL 1 2 3 1 3 1 3 1 2 1 2 1 2 3 1 3 4 5 CN50 WHI CN41 BLU CN40 BLU GRY BLU BLU BLK BLK BLK WHI GRY CN309 YEL Option 1 2 CN32 WHI Fandrive CN82 BLU Motor drive circuit CN333 WHI CN334 WHI TC1 TC2 CN102 RED TCJ 2 1 2 1 2 1 2 1 2 1 2 1 CN104 YEL TA 1 1 3 3 1 2 3 4 5 6 1 1 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 2 2 3 4 4 5 5 1 3 5 1 3 1 2 3 1 2 3 5 PMV 1 1 5 4 5 4 LM...

Page 22: ...J 2 1 2 1 CN101 BLK CN100 BRN 1 3 CN080 GRN TC2 PNL EXCT 2 1 CN073 RED 2 2 1 3 2 4 5 1 FILTER CN070 WHI CN081 BLK 2 1 2 1 2 1 1 1 2 2 1 1 2 2 1 1 2 X Y 2 3 2 1 1 3 1 1 2 3 3 1 2 3 4 5 1 2 3 4 5 6 1 2 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 2 1 TC1 2 1 2 1 CN066 WHI CN067 BLK AC IN RED WHI CN040 BLU Outdoor unit Remote Controller Power supply single phase...

Page 23: ...20V 60Hz Indoor unit earth screw Closed end connector CN01 WHI CN03 RED CN02 BLU CN03 RED CN041 BLU CN050 WHI CN061 YEL CN032 WHI FAN DRIVE OPTION CN060 WHI EMG TR RED RED WHI WHI U1 U2 U1 U2 A B X Y Network adapter Option Control P C board for undoor unit MCC 1403 MCC 1401 For AP0071BH AP0091BH AP0121BH 1 1 2 2 CN1 1 1 3 3 CN074 WHI CN075 WHI Power supply circuit TR 1 1 3 3 CN068 BLU FAN CN083 WH...

Page 24: ...J 2 1 2 1 CN101 BLK CN100 BRW 1 3 CN080 GRN TC2 PNL EXCT 2 1 CN073 RED 2 2 1 FILTER CN070 WHI CN081 BLK 2 1 2 1 2 1 1 1 2 2 1 1 2 2 1 1 2 2 1 1 2 X Y 2 3 2 1 1 3 1 1 2 3 3 1 2 3 4 5 1 2 3 4 5 6 1 2 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 2 1 4 3 5 2 1 TC1 CN066 WHI AC IN CN044 BRW CN040 BLU Outdoor unit Remote Controller Power supply single phase 220 240V 50Hz 220V 60Hz Indoor unit earth screw Closed ...

Page 25: ...EL BLU CN22 CN23 CM2 CN03 CN02 CN01 CN15 CN13 CN07 WHI CN08 WHI T S R BLK WHI RED Reactor 3 1 3 1 3 1 3 1 3 4 5 3 4 1 2 1 2 5 3 4 5 3 4 1 2 1 2 3 3 1 1 5 3 4 1 2 5 3 2 1 3 2 5 4 5 4 1 2 2 3 3 1 1 CN18 RED CN17 BLK CN06 WHI CN26 BLU CN500 WHI CN503 WHI CN504 CN505 RED CN506 BLK CN502 BLU GRY BLU YEL RED CN501 RED CN11 CN10 CN09 CN25 WHI YEL BLU W V U CN21 CN01 CN02 CN03 RED WHI BLK GRY CN04 CN23 BL...

Page 26: ...WH 0091WH 0121WH 0151WH 0181WH Fan motor AF 230 53 4G AF 230 39 4B Running condenser for fan motor AC 400V 1µF AC 450V 2µF Running capacitor for fan motor AC 400V 1 0µF AC 450V 2 0µF Drain pump motor PJD 05230TF 1 Float switch FS 0208 608 Control P C board transformer TT 13 Pulse motor EDM MD12TF 3 Pulse motor valve EDM B25YGTF EDM B40YGTF TA sensor Lead wire length 268mm TC1 sensor Ø4 size lead w...

Page 27: ...0mm Vinyl tube Blue TC2 sensor Ø6 size lead wire length 1200mm Vinyl tube Black TCJ sensor Ø6 size lead wire length 1200mm Vinyl tube Red Concealed Duct Standard Type Model MMD AP 0071BH 0091BH 0121BH 0151BH 0181BH Fan motor ICF 280 120 2 Drain pump motor ADP 1409 Float switch FS 0218 102 Pulse motor EDM MD12TF 3 Pulse motor valve EDM B25YGTF EDM B40YGTF TA sensor Lead wire length 618mm TC1 sensor...

Page 28: ...size lead wire length 2000mm Vinyl tube Blue TC2 sensor Ø6 size lead wire length 2000mm Vinyl tube Black TCJ sensor Ø6 size lead wire length 2000mm Vinyl tube Red Under Ceiling Type Model MMC AP 0151H 0181H 0241H 0271H 0361H 0481H Fan motor SWF 280 60 1 SWF 280 60 2 SWF 280 120 2 Driving motor for horizontal grille MP24GA1 Pulse motor EDM MD12TF 3 Pulse motor valve EDM B40YGTF EDM B60YGTF 1 TA sen...

Page 29: ... AC450V 1µF AC450V 2µF Transformer TT 13 Pulse motor EDM MD12TF 3 Pulse motor valve EDM B25YGTF EDM B40YGTF TA sensor Lead wire length 818mm Vinyl tube TC1 sensor Ø4 size lead wire length 2000mm Vinyl tube Blue TC2 sensor Ø6 size lead wire length 2000mm Vinyl tube Black TCJ sensor Ø6 size lead wire length 2000mm Vinyl tube Red Floor Standing Type Model MMF AP 0151H 0181H 0241H 0271H 0361H 0481H 05...

Page 30: ... 5 to 4 3V 0 to 3 73MPa Fan motor MF 230 600 2 DC280V 600W Case heater AC240V 26W 3 Compressor case thermo US 622KXTMQO SS OFF 125 C ON 90 C 2 Heat Pump Model Model MMY MAP0501HT7 MAP0601HT7 MAP0801HT7 MAP1001HT7 MAP1201HT7 Compressor DA351A3FB 22M Output 3 0kW 2 DA421A3FB 22M Output 3 7kW 2 4 way valve coil VHV AC200V 50 60Hz LB64 AC200V 50 60Hz Pulse motor valve coil HAM MD12TF 3 DC12V 2 way val...

Page 31: ...e Smoothing condenser For fan 400LRSN1000M 1000µF 400V Magnet SW FC 2S 400V 38A Thermistor ZPROYCE101A500 100Ω 13A 500V Heat Pump Model Model MMY MAP0501HT7 MAP0601HT7 MAP0801HT7 MAP1001HT7 MAP1201HT7 Power supply terminal block JXO 3004 AC600V 30A 4P Communication line terminal block JXO B2H AC30V or DC42V 1A 6P Reactor CH 44 1 45mH 25A Smoothing condenser For compressor 400LRSN 1500M 1500µF 400V...

Page 32: ...ater TE sensor PMV Pulse Motor Valve TS sensor TO sensor Check joint Low pressure SV2 valve SV3C valve SV3E valve SV3D valve SV3A valve SV3B valve SV5 valve Low pressure sensor 4 way valve High pressure sensor Check joint High pressure TL sensor Check joint Liquid pipe Front side Rear side TK1 TK2 sensor TK3 sensor TK4 sensor ...

Page 33: ...r 3 way discharge can be selected according to the shape or arrangement of the room For details consult with the dealer which you have purchased the air conditioner Air filter Removes dust and trash Air filter is provided in the air grille Air inlet grille Air in the room is sucked from here Earth screw It is included in the electric parts box Clip The clip is to open close the air inlet grille Ce...

Page 34: ... Earth screw It is included in the electric parts box Air outlet Air outlet flap Select air blow direction in cooling or heating operation each Air inlet grille Air in the room is sucked from here Air filter Remo ves dust and trash Air filter is pro vided in the air inlet grille Air outlet flange Discharge duct is connected Earth screw It is included in the electric parts box Air filter Removes du...

Page 35: ... up temperature display The selected set up temp is displayed 11 Remote controller sensor display Displayed while the sensor of the remote controller is used 12 PRE HEAT display Displayed when the heating operation starts or defrost operation is carried out While this indication is displayed the indoor fan stops or the mode enters in LOW 13 No function display Displayed if there is no function eve...

Page 36: ...ets Erases FILTER display 6 UNIT and AUTO flap button UNIT No function 7 Operation lamp Lamp is lit during the operation Lamp is off when stopped Although it flashes when operating the protection device or abnormal time 8 button When the button is pushed the operation starts and it stops by pushing the button again When the operation has stopped the opera tion lamp and all the displays disappear 9...

Page 37: ...n mode with the MODE button One push of the button and the display changes in the order shown on the right In HEAT mode if the room temperature reaches to the set temperature the outdoor unit stops and the air flow becomes LOW and the air volume decreases In the defrost mode the fan stops so that cool air is not discharged and PRE DEF is displayed 3 Select air volume with FAN button One push of th...

Page 38: ...u select the Auto mode it is unnecessary to set the fan speed The FAN speed display will show AUTO and the fan speed will be automatically controlled After the heating operation has stopped FAN operation may continue for approx 30 seconds When the room temperature reaches the set temperature and the outdoor unit stops the supper low wind is discharged and the air volume decreases excessively Durin...

Page 39: ...ncreases in the unit of 0 5 hr 30 minutes The maximum set time is 72 0 hr For every push of button the set time decreases in the unit of 0 5 hr 30 minutes The minimum set time is 0 5 hr 3 Push SET button SET DATA display disappears and display goes on When ON timer is activated time is displayed and after time of the timer has been up displays other than ON disappear Cancel of timer operation 4 Pu...

Page 40: ...all the air conditioner in a place where it is usually exposed to strong wind such as in seaside area or on the roof or upper floor of a building Do not install the air conditioner in a place where sulfureous gas generated such as in a spa Do not install the air conditioner in a vessel or mobile crane Be careful with noise or vibrations Do not install the air conditioner in a place where noise by ...

Page 41: ...e air conditioner If the protective device works the operation stops and the operation lamp flashes When the protective device works the indication and the check code are displayed on the display section of the remote controller In the following cases the protective device may work In cooling operation The suction port or discharge port of the outdoor unit is closed A strong wind continuously blow...

Page 42: ...on direction to the lowest position and then push again SWING is displayed and the up down wind direction is automatically selected How to stop swing 3 Push SWING WIND again while the flap is swing The flap stops at a position when you push After then if pushing the air direction descends from the highest position In COOL DRY operation the flap does not stop as it directs downward If stopping the ...

Page 43: ... the switch 2 way Air Discharge Cassette Type In cooling operation Use the air outlet flap with horizontal set point 1 Push during operation is displayed and the air direction is auto matically exchanged upward downward When a remote controller operates the multiple indoor units an indoor unit is selected and air direction can be individually set up 2 Push again during swinging of the flap You can...

Page 44: ...ct the vertical grille inside of the air outlet flap to desired direction Setup of air direction and swing Refer to that of 2 way Air Discharge Cassette Type In cooling operation In cooling operation use the air outlet flap with horizontal set point so that cool air diffuses the whole room In heating operation In heating operation use the air outlet flap with downward set point so that the hot air...

Page 45: ... set point so that the hot air is spread at the foot High Wall Type Up Down air direction adjustment In cooling operation In cooling operation use the air outlet flap with horizontal set point so that cool air diffuses the whole room In heating operation In heating operation use the air outlet flap with downward set point so that the hot air is spread to the floor Left Right air direction adjustme...

Page 46: ...rd downward In cooling operation In cooling operation move the flap with hands and use it with horizontal air outlet point so that the cold air diffuses in whole room In heating operation For Heat pump model only In heating operation move the flap with hands and use the air outlet flap with downward set point so that the hot air blows at the foot Adjustment of air direction rightward leftward Lift...

Page 47: ...ion the defrosted water will be drained from the bottom plate of the outdoor unit Heating capacity In the heating operation the heat is absorbed from the outside and brought into the room This way of heating is called heat pump system When the outside temperature is too low it is recommended to use another heating apparatus in combination with the air conditioner Attention to snowfall and freeze o...

Page 48: ...ut the air filter Push the extrusion of the air filter to inside and pull out it to take out the air filter 3 Cleaning with water or vacuum cleaner If dirt is heavy clean the air filter by tepid water with neutral detergent or water After cleaning with water dry the air filter sufficiently in a shade place 4 Mount the air filter 5 Close the suction port Close the suction port slide the clip outwar...

Page 49: ...gging down the center downward 1 2 3 2 way Air Discharge Cassette Type Hold the center panel and pull it toward you and pull down it slowly downward The center panel can move either leftward or rightward Remove it after confirmation 1 way Air Discharge Cassette CompactType 1 Push PUSH at the center and left right of the suction port to open the suction port Take off the fall preventing straps at t...

Page 50: ...flows from the drain pan and it may wet wall or floor Be sure to clean the drain pan before the cooling season Under CeilingType 1 Open the suction grille Hold knob of the inlet grille push it rearward OPEN and then open the inlet grille quietly while holding it 2 Take out the air filter Push knobs of the air filter to remove the claws of the inlet grille Remove the air filter by pulling it toward...

Page 51: ...outlet flap Suck dust by a vacuum cleaner or clean with water After cleaning the filter with water dry the filter completely in the shade Attachment air filter Floor Standing type Cleaning of drain pan For cleaning of the drain pan contact the dealer If the drain pan or drain port is clogged with dust water is disabled to drain In some cases water overflows from the drain pan and it may wet wall o...

Page 52: ... filter is clogged with dust the performance of the air conditioner will deteriorate Floor Standing Concealed Type Clean the drain pan or the drain receiver If the drain pan or the drain receiver is clogged with dust water may overflow causing getting wet on the floor How to remove front panel Push down hook of the air filter on the front panel Lower side Pull the air filter toward you to remove i...

Page 53: ...ing of drain pan and drain receiver With strainer CAUTION Clean the drain pan and the drain receiver strainer If the drain pan or the drain receiver chokes with dust water overflows or ceiling or floor gets wet REQUIREMENT For cleaning of the drain pan or drain receiver contact the dealer which you purchased the air conditioner Do not use benzene thinner polishing powder or similar solvents for cl...

Page 54: ...he room Do not cool heat the room excessively WARNING Do not expose your body in cool air for a long time otherwise it causes worse condition or health loss It is unhealthy especially take care of children or aged persons Recommended set temperature Evenness of room temperature Using a discharge louver adjust air direction Exposing yourself for a long time in blowing air exerts a bad influence upo...

Page 55: ...r HEAT and an operation contrary to the setup operation is performed When fan operation stopped to prevent discharge of hot air Since refrigerant is flowed temporarily to prevent stay of oil or refrigerant in the stand by indoor unit sound of flowing refrigerant Kyururu or Shaa may be heard or white steam when other indoor unit operates in HEAT mode and cold air in COOL mode may be blow out Sound ...

Page 56: ...valve SV3C 4 Way valve Check joint Low pressure sensor Accumulator Check joint Check joint High pressure sensor High pressure switch Oil separator Check valve Check valve Check valve Check valve Check valve Compressor 1 Inverter Strainer Strainer Sensor TK1 Sensor TK4 Sensor TK3 Capillary tube Capillary tube Capillary tube Strainer Strainer Strainer PMV1 Strainer Strainer Strainer Capillary tube C...

Page 57: ...on Connector CN317 Blue 1 Cooling heating exchange 2 Reverse defrost Connector CN300 301 White 1 Super heat control function in heating operation 2 Liquid line shut down function while follower unit stops 3 Under cool adjustment function in cooling operation 1 Prevention for rapid decreasing of oil Decreases oil flowing to the cycle 2 Reserve function of surplus oil TD1 Connector CN502 White TD2 C...

Page 58: ...s indoor suction temperature Connector CN100 3P Brown 1 Controls PMV super heat in cooling operation Connector CN101 2P Black 1 Controls PMV under cool in heating operation Connector CN102 2P Red 1 Controls PMV super heat in cooling operation 2 MMU AP0071 to AP0121YH only Controls PMV under cool in heating operation Air heat exchanger at indoor side Fan M Fan motor Sensor TA Sensor TC1 Gas side Li...

Page 59: ...it MMY MAP1001H TE1 SV5 SV3B Ps sensor SV2 TL PMV1 PMV2 Compressor 1 Compressor 2 TD1 HP HP TD2 Pd sensor FM TO TS1 Liquid tank 4 Way valve Accumulator TK2 TK4 TK1 SV3E SV41 SV42 SV3D SV3A TK3 SV3C Oil tank OS TE1 SV5 SV3B Ps sensor SV2 TL PMV1 PMV2 Compressor 1 Compressor 2 TD1 HP HP TD2 Pd sensor Strainer TCJ TC2 TC1 PMV Strainer Strainer TCJ TC2 TC1 PMV Strainer Strainer TCJ TC2 TC1 PMV Straine...

Page 60: ...s sensor SV2 TL PMV1 PMV2 Compressor 1 Compressor 2 TD1 HP HP TD2 Pd sensor Strainer TCJ TC2 TC1 PMV Strainer Strainer TCJ TC2 TC1 PMV Strainer Strainer TCJ TC2 TC1 PMV Strainer Strainer TCJ TC2 TC1 PMV Strainer Gas pipe Gas pipe Liquid pipe Liquid pipe Balance pipe FM TO TS1 Liquid tank 4 Way valve Accumulator TK2 TK4 TK1 SV3E SV41 SV42 SV3D SV3A TK3 SV3C Oil tank OS TE1 SV5 SV3B Ps sensor SV2 TL...

Page 61: ... TCJ TC2 TC1 PMV Strainer Strainer TCJ TC2 TC1 PMV Strainer Strainer TCJ TC2 TC1 PMV Strainer Strainer TCJ TC2 TC1 PMV Strainer Gas pipe Gas pipe Liquid pipe Liquid pipe Balance pipe FM TO TS1 Liquid tank 4 Way valve Accumulator TK2 TK4 TK1 SV3E SV41 SV42 SV3D SV3A TK3 SV3C Oil tank OS TE1 SV5 SV3B Ps sensor SV2 TL PMV1 PMV2 Compressor 1 Compressor 2 TD1 HP HP TD2 Pd sensor Indoor unit High pressu...

Page 62: ... TCJ TC2 TC1 PMV Strainer Strainer TCJ TC2 TC1 PMV Strainer Strainer TCJ TC2 TC1 PMV Strainer Strainer TCJ TC2 TC1 PMV Strainer Gas pipe Gas pipe Liquid pipe Liquid pipe Balance pipe FM TO TS1 Liquid tank 4 Way valve Accumulator TK2 TK4 TK1 SV3E SV41 SV42 SV3D SV3A TK3 SV3C Oil tank OS TE1 SV5 SV3B Ps sensor SV2 TL PMV1 PMV2 Compressor 1 Compressor 2 TD1 HP HP TD2 Pd sensor Indoor unit High pressu...

Page 63: ...D2 Pd sensor Strainer TCJ TC2 TC1 PMV Strainer Strainer TCJ TC2 TC1 PMV Strainer Strainer TCJ TC2 TC1 PMV Strainer Strainer TCJ TC2 TC1 PMV Strainer Gas pipe Gas pipe Liquid pipe Liquid pipe Balance pipe FM TO TS1 Liquid tank 4 Way valve Accumulator TK2 TK4 TK1 SV3E SV41 SV42 SV3D SV3A TK3 SV3C Oil tank OS TE1 SV5 SV3B Ps sensor SV2 TL PMV1 PMV2 Compressor 1 Compressor 2 TD1 HP HP TD2 Pd sensor In...

Page 64: ...operation select command from the remote controller or central controller the operation mode is se lected 2 Operation select Concealed duct type air conditioner cannot operate for drying 3 Room temp control 1 Adjustment range Set temperature on remote controller C Wired type Wireless type In cooling drying 18 to 29 C 18 to 30 C In heating 18 to 29 C 16 to 30 C 2 From the item code 06 the setup tem...

Page 65: ... operation When the command frequency became S0 with continua tion of J zone operation of the the indoor fan in LOW mode until it reaches the I zone It is reset when the following conditions are satisfied Reset conditions 1 TC1 12 C and TC2 12 C and TCJ 12 C 2 20 minutes passed after stop P1 Q1 TC1 TC2 TCJ 10 C 5 C 10 C 0 C 14 C 2 In cooling operation the air conditioner operates as described belo...

Page 66: ...uding DRY operation the drain pump operates 2 While the drain pump operates if the float switch works the drain pump continues operation and a check code is displayed 3 While the drain pump stops if the float switch works turn off the capacity demand command stop the operation and operate the drain pump If the float switch continues operating for approx 5 minutes the operation stops and the check ...

Page 67: ...scharge of cold draft or stops including case that defrost operation is being performed HEAT operation cannot be performed because COOL priority is set Outdoor I F P C board SW11 bit 1 is ON and the other indoor unit is under COOL DRY operation 2 HEAT standby is displayed until the above conditions are released Remarks goes on Item and display Operation and heating stand by goes on 16 Selection of...

Page 68: ...n control 1 Cooling fan control 1 Outdoor fan speed mode is controlled based upon detected Pd pressure value 2 In a specified time when cooling operation started the center outdoor unit controls the outdoor fan speed based upon detected Pd pressure value The follower outdoor unit controls the outdoor fan speed mode based upon detected TE sensor temp 2 Heating fan control 1 Outdoor fan speed mode i...

Page 69: ...cy 26Hz Item Capacity control 4 Oil level detection control 1 Based upon the detected temperature of TK1 to TK4 sensors whether the right amount of oil is included in the compressor case or not is judged The header unit and follower unit perform this control individually 2 From relation between the detected temperature of the operating compressor TK1 or TK2 and detected temperature of TK3 TK4 whet...

Page 70: ...outdoor heat exchanger while low ambient cooling opera tion is performed This control is managed by the header outdoor unit 1 Control conditions Cooling oil recovery control is executed every 2 hours approximately 2 Contents of control Recovery time continues for approx 2 or 3 minutes though it differs according to the system capacity 2 Refrigerant recovery control in heating room During heating o...

Page 71: ...nit 1 Contents of control The compressor stops when Pd pressure is over 3 5MPa Remarks 10 Case heater control The case heater output includes compressor case heater and accumulator case heater This control is to prevent accumulation of refrigerant in the compressor case by turning of the power of heater while the compressor stops and it is executed in all the outdoor units If electricity is not tu...

Page 72: ... count is cleared if the operation continues for 10 minutes or more 3 The error is determined with error count 4 The error H04 is displayed in compressor 1 and H14 in compressor 2 respectively Item IPDU control Continued Remarks TH sensor is provided to IPDU1 and 2 each 12 High pressure prevention control 1 High pressure SW control The high pressure SW is usually closed and connected to IPDU 1 The...

Page 73: ...y cause error in opening 3 When transporting replacing the set never keep the driving part removed The valve is closed and the valve is damaged by sealed liquid compression 4 When removing the driving part and attaching it again push in it securely until a click sound can be heard Then turn off the power once and turn on the power again Oil equation control schematic diagram FM TO TS1 Liquid tank ...

Page 74: ...hing UNIT button the indoor unit numbers in the group control are successively displayed In this time the fan of the selected indoor unit only is turned on 3 Specify the item code DN using the setup temperature and buttons 4 Select the setup data using the timer time and buttons When selecting the DN code to 33 change the temperature indication of the unit from C to F on the remote controller 5 Pu...

Page 75: ...ual 0001 Header unit of group 0002 Follower unit of group 0000 Not provided 0001 Swing only 0004 4 way Air Discharge Cassette type and Under Ceiling type 0000 0 deg to 0010 10 deg For setup temperature reversal of COOL HEAT by Data value 2 0000 None 0001 Reset 0000 Usual 0001 Condition ignored Detection control for heat exchanger temperature 0000 Filter input 0001 Alarm input Air washer etc 0002 H...

Page 76: ...g Cabinet Floor Standing Concealed Floor Standing Abbreviated Model name MMU AP XXX SH MMU AP XXX H MMU AP XXX WH MMU AP XXX YH MMD AP XXX BH MMD AP XXX H MMC AP XXX H MMK AP XXX H MML AP XXX H MML AP XXX BH MMF AP XXX H Setup data 0001 0003 0005 0007 0009 0011 0012 0013 0015 0017 0018 0021 0023 Model 007 009 012 015 018 024 027 030 036 048 056 072 096 Setup data 0000 0001 0002 0003 0004 0006 0007...

Page 77: ...on signal Output during normal operation 3 Error signal Output during alarm Serial communication error or indoor outdoor protective device operation 2 Wiring diagram using remote control interface TCB IFCB 4E Input IFCB 4E No voltage ON OFF serial signal Output No voltage contact for operation compressor thermostat ON error display Contact capacity Below Max AC240V 1A 1 2 3 4 5 6 CN61 T10 YEL 1 2 ...

Page 78: ... 2 Every pushing UNIT button the indoor unit numbers in group control are displayed succes sively In this time the fan of the selected indoor unit only turns on 3 Using the setup temp or button specify the item code 4 Using the timer time or button select the setup data At shipment The setup data are as follows Setup data Handling of operation of air to air heat exchanger or ventilating fan Unavai...

Page 79: ...us that card is taken out from the card switch box When the card switch box does not perform the above contact operation convert it using a relay with b contact 2 Operation Handle the wired remote controller switch in the following procedure Use the wired remote controller switch during stop of the system 1 Push concurrently SET CL buttons for 4 seconds or more 2 Using the setup temp or button spe...

Page 80: ...ace P C board No 1 2 Function Outdoor fan high static pressure shift Cooling priority Heating priority control Switch No SW10 SW11 Bit 2 1 2 Interface P C board of outdoor unit SW10 SW11 Bit 1 Bit 2 Bit 2 For setup of cooling priority heating priority control For setup of outdoor fan high static pressure shift Switch position magnified drawing ...

Page 81: ...lowing table Capacity rank MMY MAP Standard air volume of outdoor unit m min 0501 0601 type 0801 type 1001 1201 type 150 165 175 7 2 1 2 Cooling Priority Heating Priority Control n Usage Features Cooling priority or heating priority can be selected There are the following four patterns in selecting setup of the priority mode Select a priority mode based upon the demand of the destination to be ins...

Page 82: ...firmed Using the setup temperature and buttons specify the item code Using the timer time and buttons select the setup data Priority No priority Push SET button In this time the setup operation finishes when the display changes from flashing to lighting After setup operation has finished push button Setup is determined When pushing button the display disappears and the status returns to the usual ...

Page 83: ...r ON OFF control Night operation control Operation mode selection control Switch No SW07 SW07 Bit 1 1 2 Connector No CN513 CN513 CN509 CN512 CN508 CN510 Used control P C board TCB PCDM2E TCB PCDM2E TCB PCMO2E TCB PCMO2E TCB PCMO2E TCB PCMO2E Outdoor unit interface P C board SW07 Bit 1 Bit 2 For power peak cut control selection For power peak cut control expansion selection CN508 Red CN509 Black CN...

Page 84: ...C board Connector position magnified drawing Switch position magnified drawing Operation The upper limit capacity of the outdoor unit is restricted based on the demand request signal from outside L1 Display lamp during power peak cut control SW1 Power peak cut ON switch ON during demand OFF in normal time 1 SW2 Power peak cut OFF switch OFF during demand ON in normal time 1 1 Input signals of SW1 ...

Page 85: ... Normal operation 80 Upper limit restriction 85 Upper limit restriction 60 Upper limit restriction 75 Upper limit restriction 0 Forced stop 60 Upper limit restriction Operation The upper limit capacity of the outdoor unit is restricted based on the demand request signal from outside L1 Display lamp during Power peak cut control SW1 Power peak cut ON switch 1 SW2 Power peak cut OFF switch 1 1 Input...

Page 86: ...OL and HEAT terminals concurrently 2 Be sure to prepare a contact for each terminal Outside signal No voltage pulse contact External master ON OFF control board TCB PCM02E Outdoor unit destination to be connected becomes the header outdoor unit U1 SMH Heating Mode Select switch Terminal COOL SMC Heat SMH Input signal ON OFF ON OFF Operation Starts collectively indoor units Stops collectively indoo...

Page 87: ...Approx 80 7 2 2 6 Operation Mode Selection Control Operation SMC COOL mode specification input switch SMH HEAT mode specification input switch This control can be operated with the operation mode which is permitted by SMC or SMH The indoor unit operating by operation mode without permission is as follows 1 Display on remote controller Mode select controlled goes on 2 Indoor fan In FAN mode Fan nor...

Page 88: ...ng The communication system differs from that of R22 or R407 refrigerant Modular Multi system air conditioner Check again cautious points on wiring 1 In case that a center control system is not connected NOTE The above figure does not show all the electric cables For details refer to the installation manuals for outdoor unit indoor unit remote controller or optional devices No Main check items Are...

Page 89: ...munication lines Is the terminal resistance SW30 2 on the interface P C board of the header unit turned on Set up at shipment from the factory After address setup turn off SW30 2 of the header unit except the smallest unit after check of trial operation Is the end terminal of the shield cable grounded When the refrigerant line and the central control system of the custom air conditioner are connec...

Page 90: ...ls U5 U6 XXXX Central control system connection terminals U3 U4 XXXX Is power of indoor units supplied collectively Is earth grounded Is insulation good Is the main power voltage good XXXX V Is diameter of connecting pipe correct Is the branch kit correct Is drain water of the indoor unit arranged so that it flows without accumulation Is thermal insulation of pipes good Connecting pipes Branch kit...

Page 91: ...rrective amount of refrigerant by system capacity C It is the final additional amount of refrigerant As the result If minus sign is indicated do not add the refrigerant 0kg Additional amount of refrigerant Additional amount of refrigerant by pipe length A Corrective amount of refrigerant by system HP C Additional amount of refrigerant kg kg kg Next refer to the following table for the corrective a...

Page 92: ...the above check code is not dis played and only U1 is displayed on 7 segment display A Check on indoor unit 1 Display check on remote controller In case of wired remote controller Check that a frame as shown in the following left figure is displayed on LC display section of the remote controller If a frame is not displayed as shown in the above right figure the power of the remote controller is no...

Page 93: ...which address is set up Check that L08 is displayed on 7 segment display B on the interface P C board of the header unit in the system to which address is set up Confirm the corresponding items in 8 4 3 Address setup procedure and then set up address according to the operation procedure Be sure that the setup operation may differ in group control or central control Note Address cannot be set up if...

Page 94: ...ever go to the procedure 1 when the central control is performed in a single refrigerant line Example Address setup procedure Cable systematic diagram In case of central control in a single refrigerant line To procedure 1 In case of central control over refrigerant lines To procedure 2 Address setup procedure 1 1 Turn on power of indoor outdoor units In order of indoor Outdoor 2 After approx 1 min...

Page 95: ...in all the header units to which the central control is connected At shipment from factory No connection of connector 3 Turn on power of indoor outdoor In order of indoor outdoor 4 After approx 1 minute check that 7 segment display is U 1 L08 U 1 flash on the interface P C board of the header unit 5 Push SW15 and start setup the automatic address Max 10 minutes for 1 line Usually approx 5 minutes ...

Page 96: ...it address Group address 1 1 0 1 2 0 2 1 1 2 2 2 3 1 0 Connect short after address setup Connect short after address setup Connect short after address setup Setup at shipment from factory U3 U4 U1 U2 U5 U6 U1 U2 A B Header unit Individual Group Remote controller U3 U4 U1 U2 U5 U6 U1 U2 A B Follower unit Remote controller Relay connector U3 U4 U1 U2 U5 U6 U1 U2 A B Remote controller U3 U4 U1 U2 U5 ...

Page 97: ...timer time buttons set up the indoor address 7 Push SET button OK when display goes on Group address 8 Using the setup temp buttons set 14 to the item code 9 Using the timer time buttons set Individual 0000 Header unit 0001 Follower unit 0002 10 Push SET button OK when display goes on 11 Push button Setup operation finished Status returns to normal stop status UNIT SET CL UNIT No CODE No SET DATA ...

Page 98: ... controller Group control unit other unit No is displayed every pushing UNIT button 2 When you want to know position of the indoor unit using the address To confirm the unit numbers in a group control Procedure Operation while the air conditioner stops The indoor unit numbers in a group control are successively displayed and the corresponding indoor fan is turned on Operation while the air conditi...

Page 99: ...cedure Change of indoor address from remote controller Change of indoor address from wired remote controller To change the indoor address in individual operation Wired remote controller Indoor unit 1 1 or group control When the setup operation with automatic address has finished this change is available Procedure Operation while air conditioner stops 1 Push simultaneously SET CL buttons for 4 seco...

Page 100: ... First the current indoor address is displayed on the setup data Line address is not displayed 4 The indoor address of the setup data moves up down by the timer time buttons Change the setup data to a new address 5 Push SET button to determine the setup data 6 Every pushing UNIT button the indoor unit numbers in the identical pipe are successively displayed Only fan of the selected indoor unit ope...

Page 101: ...ed with the other refrigerant line Check again the relay connector between U1U2 and U3U4 terminals NOTE Be careful that the other refrigerant line address may be also cleared if clearing operation is not correctly executed 5 After clearing of the address set up an address again SW01 SW02 SW03 2 1 2 2 2 2 SW04 After checking that A d buS is displayed on 7 degment display and then push SW04 for 5 se...

Page 102: ...SW30 2 on the interface P C board at outdoor header unit side if it is ON Turn off the power and then execute the operation AUTO1 AUTO2 AUTO3 is counted and displayed on 7 degment display 5 When U 1 is displayed on 7 segment display the setup operation finished Turn off the indoor outdoor power 6 Return the following setup as before Relay connector SW30 2 SW01 02 03 3 Turn on the indoor outdoor po...

Page 103: ... the central control line turned on Setup is unnecessary for follower unit 4 Are the terminal resistance SW30 2 of the header units in except the line of which central control line address is the smallest turned off Setup is unnecessary for follower unit 5 Are not addresses in the line address SW13 SW14 duplicated in each refrigerant line Check U1 U3 U2 U4 U1 U3 U2 U5 U6 U4 U1 U3 U2 U1 A U2 U5 U6 ...

Page 104: ...r backup The power of follower unit is not turned on Duplication of outdoor line addresses Line address setup error occurred after connec tion between U1 U2 and U3 U4 connectors Duplicated of indoor units with priority There are two or more indoor units set up with priority Address setup error Only indoor addresses of all the connected indoor units are undefined L05 Displayed on the indoor unit se...

Page 105: ...d to the header unit Fig 1 Indoor outdoor cannot communicate before address setup There is none of outdoor terminal resistance or there are two or more resistances Before address setup When connecting indoor outdoor communication line between outdoor units under condition of connected communication line between outdoor units Fig 2 SW08 setup error Address setup is performed with connecting indoor ...

Page 106: ...Number of connected outdoor units is short Miswiring example Header unit U3 U4 Indoorunit Indoorunit Header unit U1 U2 Indoorunit A B Indoorunit Header unit U1 U2 Indoorunit Indoorunit Header unit U1 U2 Follower unit U1 U2 Indoorunit Header unit U1 U2 Follower unit U3 U4 Indoorunit Header unit U3 U4 U1 U2 Follower unit Indoorunit Header unit U1 U2 Follower unit U5 U6 Indoorunit Header unit Line 1 ...

Page 107: ...eration from remote controller Wired remote controller Refer to the lower items in Test operation of wired remote controller Wireless remote controller Refer to the lower items in Test operation of wireless remote controller Wired remote controller 1 When pushing button for 4 seconds or more TEST is displayed in the display section and the mode enters in test operation mode 2 Push button 3 Using b...

Page 108: ...st corner cap attached with sensor section from the ceiling panel For removing method follow to the installation manual attached to the ceiling panel Be careful to handle the sensor section because cables are connected to the sensor section Remove the sensor cover from the adjust corner cap 1 screw 2 Change Bit 1 TEST of the switch S003 on the sensor P C board from OFF to ON Mount the sensor cover...

Page 109: ...sound Pi immediately push Temperature set button to set to 19 C push Temperature set button to set to 29 C After checking the receiving sound Pi immediately After checking the receiving sound Pi immediately push Temperature set button to set to 18 C push Temperature set button to set to 30 C Then repeat the procedure 4 5 4 5 After approx 10 seconds all the display lamps on the sensor part of wirel...

Page 110: ...tion of the system Check operation status of the compressor Is air circulation good Is the operating current normal Is the operating pressure normal Check direction of the flap Execute a test operation using Function of start stop the indoor unit from outdoor unit in Service support function Check power voltage of the main power supply Check cable size of the power supply Check temperature load in...

Page 111: ... type air conditioners connected Data changes according to installed pipe length combination of indoor units or connected indoor capacity For a compressor the left side is 1 and the right side is 2 viewed from the front side Even if two compressors operate the frequency difference may be a little set as measures against resonance The temperature of indoor heat exchanger TC indicates TCJ sensor tem...

Page 112: ...play A Check that this display surely matches with the expected system capacity 7 segment display B HP 7 segment display A No of connected outdoor units B C 7 segment display A No of connected indoor units B P 7 segment display A Cooling JC Heating JH B Check No of outdoor units Set the rotary switch SW01 SW02 and SW03 on the interface P C board of the header unit to 1 3 and 3 respectively Then No...

Page 113: ...ayed Confirmation of check results 2 Push the push switch SW05 on the interface P C board of the header unit for 2 seconds or more The indoor address in which error is being detected is displayed on 7 segment display B If there are multiple indoor address in which error is being detected they are successively exchanged and displayed When SW05 is turned on again the display returns to display of No...

Page 114: ...d indoor unit Note The other indoor units keep the status as they are Setup Release Setup Push SW04 for 2 seconds or more with SW01 2 SW02 5 SW03 1 Release Return SW01 SW02 SW03 to 1 Setup Push SW04 for 2 seconds or more with SW01 2 SW02 6 SW03 1 Release Return SW01 SW02 SW03 to 1 Setup Push SW04 for 2 seconds or more with SW01 2 SW02 7 SW03 1 Release Return SW01 SW02 SW03 to 1 Setup Push SW05 for...

Page 115: ...n check Stop End Interface P C board 7 segment display A 7 segment display B SW04 SW05 SW01 SW02 SW03 Rotary switch 2 Heating test operation function This function is provided to change collectively the mode of all the indoor units connected to the same system for the heating test operation mode Using switches on the interface board of the header unit Operation procedure NOTE The test operation re...

Page 116: ...o troubleshooting and then execute a test operation Start Stop End Operation check If the discharge temperature does not change though COOL or HEAT has been set up from the remote controller misconnection is considered Set up the operation mode of the remote controller If it is not set up the operation continues with the current mode FAN COOL HEAT Set on the interface P C board of the header unit ...

Page 117: ... of the header unit with in the following table Push the push switch SW04 on the interface P C board of the header unit for 2 seconds or more If pushing this switch continuously for 10 seconds or more the operation changes to the individual test operation The indoor unit to be started operates Push the push switch SW05 on the interface P C board of the header unit for 2 seconds or more 7 segment d...

Page 118: ...neously for 4 seconds or more 2 Using buttons set FF to item code The display in Section A in the following figure is counted with interval of 5 seconds as 0005 0004 0003 0002 0001 0000 When the count arrives 0000 the error is cleared However counting from 0005 is repeated on the display 3 When button is pushed the status returns to the normal status Error clearing in indoor unit Error in the indo...

Page 119: ...wer of both the outdoor and the indoor units 2 Turn on the power of the indoor unit prior to the power of the outdoor unit If the power is turned on in reverse order a check code E19 No of header unit error is output NOTE After power reset it requires usually 3 minutes to power on due to the initial communication of the system In same cases it requires Max 10 minutes Set the rotary switches on the...

Page 120: ...ace P C board of the header unit as follows SW01 2 SW02 4 SW03 1 7 segment display A A 1 B 7 segment display A A 1 A FF Push the push switch SW04 on the interface P C board of the header unit for 2 seconds or more display of the connected remote controller flashes Push the push switch SW05 on the interface P C board of the header unit for 2 seconds or more Operation Check the connected remote cont...

Page 121: ...he header unit SW01 to 2 SW02 to 3 SW03 to 1 and push SW05 for 2 seconds or more Display appears on 7 segment display for one minute as follows P 00 Clear After 2 minutes 1 minutes for Close fully passed when setup has finished the opening automatically returns to the normal opening 8 7 6 Pulse Motor Valve PMV Forced Open Fully Close fully Function in Outdoor Unit This function is provided to forc...

Page 122: ...s exchanged just when the number of SW02 has been changed on the other hand the solenoid valve output is exchanged when SW02 has kept with the same number for 5 seconds or more NOTE 2 The mark in the table indicates the corresponding solenoid valve is forcedly turned on NOTE 3 The mark in the table indicates ON OFF of the solenoid valve is controlled based upon the specifications of the air condit...

Page 123: ...3 From when fan step 31 is displayed in 7 segment display B the fan starts operation Max step operation 4 After then 7 segment display B and the fan step are changed by changing the setup number of the switches SW02 and SW03 Output pattern of the fan is as follows Clear This function is cleared by one of the following operations 1 When SW01 setting number was changed to other number 2 Push switch ...

Page 124: ...4 for 2 seconds or more 3 E 1 is displayed on 7 segment display A 4 The fan of the outdoor unit in which error occurred starts operation within approx 10 seconds when E 1 was displayed In case to operate the fans in all the normal outdoor units 1 Check all the switches SW01 SW02 and SW03 on the interface P C board are set to 1 1 1 2 Push the push switches SW04 and SW05 at the same time for 2 secon...

Page 125: ...full open function Indoor remote controller discriminating function Cooling test operation function Heating test operation function Indoor collective start stop ON OFF function Outdoor refrigerant recovery operation function Pump down function Error clear function Solenoid valve forced open close function Fan forced operation function Outside temp sensor manual adjustment function Indoor No 1 to 1...

Page 126: ...ening again Clear Open CHK pin If the system is operating it stops once but automatically restart after several minutes For the details of CHK pin CN71 on indoor P C board and DISP pin CN72 on indoor P C board refer to 11 Control circuit configuration Indoor unit 2 Indoor P C board MCC 1402 and MCC 1403 8 7 12 Indoor Fan Only Operating Mode When operating an air conditioner with indoor units and r...

Page 127: ...sor 2 only is ON 11 Both compressor 1 and 2 are ON Indoor unit data NOTE 2 System data Item code 00 01 02 03 04 05 06 08 0A 0b 0C 0d Data name Room temp During control Room temp Remote controller Indoor suction temp TA Indoor coil temp TCJ Indoor coil temp TC2 Indoor coil temp TC1 Indoor discharge temp Tf NOTE 1 Indoor PMV opening No of connected indoor units Total HP of connected indoor units No ...

Page 128: ... 3 minutes after compressor OFF Is not thermostat OFF Is not the fan operating or timer Is not the system initially communicating Is not the cold draft prevention being controlled in heating operation Is not low cooling operation being controlled Is not a defrost operation being performed Is not after heat elimination operation being controlled after heating opera tion Is not auxiliary unit or rem...

Page 129: ...No of connected units E19 00 No header unit 02 Two or more header units E20 01 Outdoor of other line connected 02 Indoor of other line connected E23 E25 E26 No of outdoor units which received signal normally E28 Detected outdoor unit number 01 IPDU1 error 02 IPDU2 error 03 IPDU1 2 error E31 04 Fan IPDU error 05 IPDU Fan IPDU error 06 IPDU2 Fan IPDU error 07 All IPDU error AI NET central control di...

Page 130: ...3 F04 F05 F06 F07 F08 F10 F12 F13 F15 F16 F23 F24 F29 F31 H01 H02 H03 H04 H06 H07 H08 H14 H16 L03 L04 L05 L06 L07 L08 L09 L10 L20 L28 L29 L30 Outdoor 7 segment display Sub code F04 F05 F06 F07 F08 F12 F13 01 Comp 1 side 02 Comp 2 side F15 F16 F23 F24 F31 H01 01 Comp 1 side 02 Comp 2 side H02 01 Comp 1 side 02 Comp 2 side H03 01 Comp 1 side 02 Comp 2 side H04 H06 H07 01 TK1 sensor error H08 02 TK2 ...

Page 131: ...error Heat sink overheat error Indoor overflow error Indoor fan motor error Outdoor liquid back detection error Gas leak detection Discharge tempTD2 error 4 way valve inverse error High pressure protective operation Outdoor fan IPDU error G TR short protection error Comp position detective circuit system error Other indoor unit error Group follower unit error Error in indoor group AI NET communica...

Page 132: ...iary code are displayed alternately Display A C E F H J L P Classification Unused Central control system error Communication system error Each sensor error Failure Compressor protective system error Unused Setup error Other errors Protective device operation 2 Special mention 1 If this model is connected to AI NET by network adaptor the different check codes are displayed on the main remote contro...

Page 133: ...item code indicates item code 01 Latest to 04 Oldest CAUTION Do not push CL button because all the error histories of the indoor unit will be deleted After confirmation push button to return to the usual display UNIT No CODENo R C No 1 Confirmation and check When a trouble occurred on the air conditioner the check code and the indoor unit No are displayed on the display section of the remote contr...

Page 134: ...ditioner the error history can be confirmed with the following proce dure Up to 4 error histories are stored in memory This history can be confirmed from either operating or stop 1 Push and SET buttons in succession for 4 seconds or more 2 SERVICE CHECK goes on and Item code 01 goes on 3 When selecting flash the group number if there is the alarm history the UNIT number and the latest alarm histor...

Page 135: ... temp sensor is defective For No 16 unit the high pressure switch at the inverter unit side operates Example There is no check data Unit line No Network address No Check code detected at first Check code detected at last FILTERRESET 49505152535455565758596061626364 33343536373839404142434445464748 171819 20212223242526272829303132 1 MONITOR SET ZONE ALL CENTER LOCKED AUX TYPE TIMER No STANDBY FILT...

Page 136: ...ndoor unit does not receive communication from outdoor unit When signal is not sent for a certain period from the indoor unit which has been used to send signals E06 is normally displayed Transmission from outdoor to indoor cannot continue for 30 seconds Multiple indoor unit address setup are duplicated In 2 remote controller control including wireless both are setup as master Header indoor unit s...

Page 137: ... method of No capacity over detection Turn on SW09 Bit 2 on I F P C board of outdoor header unit Regular communication between indoor header and follower units There are multiple outdoor header units in 1 line There is none of outdoor header unit in 1 line Unit of other line was connected when indoor automatic address started Transmission of other outdoor unit was unavailable for 30 seconds or mor...

Page 138: ...infinite or zero Open Short Resistance value of sensor is infinite or zero Open Short Check item position Note Do not set up the outdoor address manually Outdoor is performing backup Check the power of outdoor unit Is the power turned on Check connection of inter unit wire or disconnection between outdoor units Check the connector connection for communication on outdoor P C board Check outdoor P C...

Page 139: ... board did not operate normally Outdoor P C board I F did not operate normally Inverter current detection circuit detected over current and stopped Check item position Check connection of TL sensor connector Check characteristics of TL sensor resistance value Check outdoor P C board I F error Check connection of TO sensor connector Check characteristics of TO sensor resistance value Check outdoor ...

Page 140: ...ion error due to liquid stagnation in compressor Check outdoor P C board IPDU error Check outdoor MG SW or OCR Check cabling of current detection circuit system Check outdoor P C board IPDU error Check compressor 1 case thermo circuit Connector cable P C board Check full opening of service valve Gas and liquid side Check outdoor PMV clogging PMV1 2 Check SV41 circuit leakage Check miscabling misin...

Page 141: ...F error Check connection of TK3 sensor connector Check characteristics of TK3 sensor resistance value Check outdoor P C board I F error Check connection of TK4 sensor connector Check characteristics of TK4 sensor resistance value Check outdoor P C board I F error Check compressor 2 case thermo circuit Connector cable P C board Check full opening of service valve Gas and liquid side Check outdoor P...

Page 142: ...center units in a group Line address setup is duplicated against the outdoor unit in different refrigerant pipe system Indoor units with priority were duplicated Indoor units with priority were duplicated At least one indoor unit connected to a group existed in the individual indoor units Address was not yet set up Indoor unit capacity was unset On the I F P C board for service jumper line was not...

Page 143: ...heck outside device error 2 Check indoor P C board error n Outside device is not connected to connector CN80 1 Check indoor P C board error Check indoor I F P C board Check the lock of fan motor AC fan Check cabling Check full opening of outdoor service valves Gas side Liquid side Check clogging of outdoor PMV PMV1 2 Check characteristics of TD1 sensor resistance value Check refrigerant shortage C...

Page 144: ...Check power voltage Check outdoor fan system error Check clogging of heat sink cooling duct Check fixation between IGBT and heat sink Check screwing and contact Check IPDU error IGBT built in temp sensor TH error Check the float switch connector Check operation of drain pump unit Check the drain pump circuit Check clogging of drain pipe Check indoor P C board error Check connection of fan connecto...

Page 145: ...Sub code E nput power supply voltage of the fan IPDU over the setup value was detected Input power supply terminal of the fan IPDU was unconnected Power supply P C board error of the fan IPDU Check item position Check Pd pressure sensor error Check full opening of service valves Gas side Liquid side Check outdoor fan error Check outdoor fan motor error Check clogging of outdoor PMV PMV1 2 Check cl...

Page 146: ...Group follower unit error Status All stop All stop Corresponding unit only stops Error detection condition Instantaneous over current was detected when compres sor started Position was not normally detected E07 L07 L03 L08 was detected when other indoor unit in the group was defective Check item position Check connector connection and wiring on IPDU P C board Check compressor error and defect of c...

Page 147: ...tion connected device Check P C board error of the connected device Check error input Check the check code of the unit with alarm Check the address setup Differs according to error contents of the with alarm Error detected by AI NET central control device Check code Main remote controller Outdoor 7 segment display Check code Sub code AI NET central control remote controller 97 99 b7 Detected posit...

Page 148: ...0 V to 650 V After checking the output when connecting the compressor lead again to the compressor terminal check surely there is no distortion on the fasten terminal lug If it is loosened caulk it with pinchers etc and then connect lead to the terminal How to check resistance of compressor winding 1 Turn off the power supply 2 Remove the compressor lead cables from the compressors In each compres...

Page 149: ... YES YES YES YES NO NO NO NO NO NO Is there no disconnection or connector contact error on harness out of terminal block of indoor unit Is the inter unit cable of remote controllers A B normal Is power applied to remote controller AB terminals Approx DC18V Is setup of two remote controllers without main remote controller Correct inter unit cable of remote controller Correct connector connection an...

Page 150: ...o communication from remote controller and communication adaptor This error is detected when the indoor unit cannot receive a signal from the remote controller Check communication cables of the remote controllers A and B As communication is impossible this check code E03 is not displayed on the main remote controller It is displayed on TCC LINK central controller Check code E02 d07 AI NET YES NO I...

Page 151: ...onnection from U1 U2 terminals of indoor outdoor inter unit cable normal Was power turned on in order of indoor unit outdoor unit Is the end terminal resistance setup of outdoor unit normal Is power applied to fuse F03 on indoor P C board Is connection U1 U2 terminals of indoor outdoor inter unit cable normal Check indoor P C board Defect Replace Check connection of inter unit cable between indoor...

Page 152: ...ignal is not sent for a certain period from the indoor unit which has used to send signals normally E06 is displayed Is power of indoor turned on Did a power failure occur Is there no noise etc YES YES YES YES YES YES NO NO NO NO NO NO Is there no miscabling disconnection on communication line betweenindoor and outdoor Is connection of CN40 connector on indoor P C board normal Is connection of CN0...

Page 153: ...l Is inter unit cable U1 U2 between indoor and outdoor short circuited Is connection of inter unit cable between indoor and outdoor correct Is there no error on power cable to outdoor unit Is F400 fuse on I F P C board opened Outdoor I F P C board failure Replace Eliminate noise Correct power cable Correct communication line I F P C board failure However an emergent operation is available by inser...

Page 154: ... AMT21E check the setup item codes DN code 12 13 and 14 When there is no address duplication check to the following flowchart YES YES YES NO NO NO Is cable connection to communication line normal Is not communication line connected to the different outdoor unit Is indoor unit quantity connected to outdoor unit correct Set up indoor address again Correct communication line Correct cable connection ...

Page 155: ...troller P C board Failure Replace Check code E09 99 d07 AI NET Check code name Duplicated master remote controller Cause of operation Setup of master remote controller is dupli cated Check code E10 CF d07 AI NET Check code name Communication error in indoor P C board A ssy Cause of operation Indoor P C board error A ssy failure Check code E12 42 d07 AI NET Check code name Automatic address start e...

Page 156: ... NO NO Did a power failure occur Is there no noise source Is connection of CN01 connector on I F P C board of header outdoor unit correct Is communication line between indoor and outdoor normal Is connection of CN40 connector on indoor P C board correct Is there any connection error of power cable Set up address again after resetting power supply Set up address again after resetting power supply C...

Page 157: ...hin 135 of outdoor units Correct HP setup Excessive indoor units are connected Correct miscabling Perform setup of no detection for capacity over 1 Check outdoor interface P C board A ssy Check code E16 89 d07 AI NET Check code name Connected indoor units capacity over Cause of operation 1 There are 48 or more connected indoor units 2 Capacity over of total connected indoor units 3 Incorrect setup...

Page 158: ... Is a group control operation Check indoor address Correct indoor address Is there any disconnection of connector or wiring from terminal block of indoor unit Are remote controller inter unit cables A B normal Are powers of all indoor units turned on Check indoor P C board Failure Replace Check power connection status of indoor unit Correct connection of connector Check circuit wire Correct remote...

Page 159: ... Cause of operation 1 Misconnection of inter unit cable between indoor and outdoor 2 Outdoor I F P C board error Sub code 00 No header unit 02 Two or more header units Check code E20 42 d07 AI NET Check code name Unit connected to other line during automatic address Cause of operation When starting automatic indoor address a device in other line is connected Sub code 01 Connection of outdoor in ot...

Page 160: ... NO NO NO Did power failure occur Is there no noise source etc Is there no miscabling or disconnection on communication line between outdoor units Is the end terminal resistance between outdoor units turned on SW30 Bit 1 Is connection of CN03 connector on outdoor I F P C board normal Check outdoor I F P C board Defect Replace Is not main power of outdoor unit turned off Check and eliminate noise e...

Page 161: ...ck code name Duplicated follower outdoor address setup Cause of operation Addresses are duplicated by manual setup of outdoor address Do not set up outdoor address manually Check code E26 15 d07 AI NET Check code name Decrease of connected outdoor units Cause of operation 1 Outdoor unit backup setup 2 Outdoor power error 3 Communication line connection error between outdoor units 4 Connector conne...

Page 162: ...d I F P C board 2 I F P C board error 3 IPDU P C board error 4 External noise Sub code 01 IPDU1 error 02 IPDU2 error 03 IPDU1 2 error 04 Fan IPDU error 05 IPDU1 fan IPDU error 06 IPDU2 fan IPDU error 07 All IPDU error or communication line error between IPDU I F P C boards or outdoor I F P C board error YES YES YES YES NO NO NO NO Replace defective IPDU P C board Correct connection of connector Re...

Page 163: ...Replace TC2 sensor Is TCJ sensor connector CN102 Red on indoor P C board normally connected Are characteristics of TCJ sensor resistance value normal Check indoor main P C board Defect Replace Is TC2 sensor connector CN101 Black on indoor P C board normally connected Are characteristics of TC2 sensor resistance value normal Check indoor main P C board Defect Replace YES YES NO NO Indoor unit tempe...

Page 164: ...r connection of connector TD2 sensor CN503 Pink and characteristics of sensor resistance value Refer to Outdoor unit temperature sensor characteristics If sensor is normal replace outdoor I F P C board Check code F06 18 d07 AI NET Check code name TE1 sensor error Cause of operation TE1 sensor Open Short This error code means detection of Open Short of TE1 sensor Check disconnection of circuit for ...

Page 165: ...o Outdoor unit temperature sensor characteristics If sensor is normal replace outdoor I F P C board Check code name F10 0C d07 AI NET Check code name Indoor TA sensor error Cause of operation TA sensor Open Short This error code means detection of Open Short of TA sensor Check disconnection of circuit for connection of connec tor TA sensor CN104 Yellow and characteristics of sensor resistance valu...

Page 166: ...characteristics error of TE1 sensor and TL sensor 3 Outdoor P C board I F error YES YES YES NO NO NO Are installed positions of TE1 sensor and TL sensor correct Are connection of TE1 sensor connector and TL sensor connector normal Are resistance characteristics of TL sensor and TE1 sensor normal Check outdoor I F P C board Defect Replace Correct connection of connectors Correct connection of conne...

Page 167: ... sensor connectors correct Are output voltage characteristics of Pd sensor and Ps sensor normal Are Pd Ps output values Pd Ps during compressor operation Check outdoor I F P C board Defect Replace Value can be confirmed by 7 segment display function on outdoor I F P C board Pd SW01 02 03 1 1 2 Ps SW01 02 03 1 2 2 1 Pressure Check joint by pressure gauge 2 Pressure display on 7 segment display 3 Ou...

Page 168: ...ressure gauge 2 Pressure display on 7 segment display 3 Output voltage of I F P C board If 1 and 2 3 are different an error of pressure sensor itself is considered If 2 and 3 are different check interface P C board Connector CN500 White Correct connection of connector Check 4 way valve Check compressor Check code name F24 43 d07 AI NET Check code name Pd sensor error Cause of operation Output volt...

Page 169: ...ess mode is repeated In this case 97 error is displayed on AI NET central controller Check code name F31 1C d07 AI NET Check code name Outdoor EEPROM error Cause of operation 1 Outdoor unit power error Voltage noise etc 2 Outdoor I F P C board error Approx 3 minutes Approx 1 minute Power ON SET DATA is displayed on main remote controller SET DATA disappears LED D02 1Hz flashes for approx 10 second...

Page 170: ...l Note 1 Does voltage drop occur when other compressor starts Is connection of wiring or connection of connector on IPDU P C board normal Correct power line Correct connector connection or wiring Correct cause of overload Compressor error Motor burning etc Note 1 After checking the output when connecting the compressor lead again to the compressor terminal check surely there is no distortion on th...

Page 171: ...ing or connector connection on IPDU P C board normal Is there no refrigerant stagnation in compressor shell Correct power line Correct cause of overload Compressor error Correct connector connection or wiring Correct refrigerant stagnation in compressor shell 1 380 415V 10 2 Check the following items mainly 1 Existence of abnormal sound and abnormal vibration during operation or starting 2 Abnorma...

Page 172: ...tem error Cause of operation 1 Cabling or connector connection error on IPDU P C board 2 IPDU P C board error Sub code 01 Compressor 1 side 02 Compressor 2 side YES NO Check IPDU P C board Correct connector connection or cabling Wiring or connector connection on IPDU P C board normal ...

Page 173: ...p Never touch with hands 3 Current of compressor lead during operation or starting No rapid current change SV4 valve Connector CN311 Blue Connector CN300 301 White Is compressor normal Note 2 Repair case thermo circuit Are service valves of gas pipe and liquid pipe of outdoor unit fully opened Does not refrigerant bypass from discharge of suction through 4 way valve Refrigerant shortage clogging p...

Page 174: ... YES NO NO NO NO NO NO NO Open service valves fully Exchange low pressure sensor Correct SV2 and SV4 circuits Correct cabling Are SV2 and SV4 circuits normal Are service valves of gas and liquid pipe of outdoor unit fully opened Is not indoor unit with different circuit connected In cooling season go to A In heating season go to B Does indoor fan normally operate in cooling season Are characterist...

Page 175: ...erant stagnation in compressor Are characteristics of TK1 to TK4 of error detected unit normal Are balance pipe valves of all outdoor units in same line fully opened Open balance pipe valves fully reset power supply and start operation Are TK1 TK2 TK3 and TK4 sensors of the error detected unit correctly connected Is there no sensor detached or misinstallation Correct miswiring and misinstallation ...

Page 176: ...2 seconds or more Set up SW02 9 and turn on SV3A SV3B SV3C valves 7 segment display Hr 3 While outdoor unit is operating check temperature change at secondary side of SV3B valve in the figure If temperature does not rise equivalent to suction temperature it is a clogging of SV3B valve Replace SV3B valve d Clogging for SV3E valve Reset the power supply ò Referring to Valve forced open close functio...

Page 177: ... is considered in the figure 4 a Clogging check for oil equalization circuit Drive the outdoor unit Drive both compressors in the unit After driving for 10 minutes check temperature of TK1 and TK2 sensors and temperature of oil equalization circuit capillary in the figure were raised Criterion TK1 TK2 Td1 Td2 temperature Approx 10 to 30 C Oil equalization capillary tubes should be higher sufficien...

Page 178: ...nt stagnation in case of compressor shell Is not TK1 sensor detached Is there no miscabling or misinstallation on TK1 TK2 TK3 TK4 sensors Start a test operation in COOL or HEAT mode TK1 sensor temp is displayed on 7 segment display with SW01 02 03 1 11 2 Check TK1 sensor temp approx 10 minutes after compressor 1 has operated If low temperature continues approximately outside temp or temperature do...

Page 179: ... continues approximately outside temp or temperature does not almost change a clogging of strainer of oil equalization circuit clogging of capillary or malfunction of check valve is considered 1 Refer to item H07 error 2 If OCR operates even after manual reset of OCR check whether the wiring to the current sensor TO2 of Comp IPDU is correct or not Outdoor unit temp sensor characteristics 4 Correct...

Page 180: ...1 02 03 1 13 2 Check TK3 sensor temp approx 10 minutes after compressor 2 has operated If low temperature continues approximately outside temp or temperature does not almost change a clogging of parallel capillary is considered Note 1 Refer to item H07 error Outdoor unit temp sensor characteristics 4 Correct miscabling misinstallation TK1 CN514 TK2 CN515 TK3 CN516 TK4 CN523 YES YES YES NO NO NO Ch...

Page 181: ... Is there no miscabling or misinstallation on TK1 TK2 TK3 TK4 sensors Check the clogging of SV3E valve 1 Refer to item H07 error 2 If OCR operates even after manual reset of OCR check whether the wiring to the current sensor TO2 of Comp IPDU is correct or not Correct miscabling misinstallation TK1 CN514 TK2 CN515 TK3 CN516 TK4 CN523 YES YES YES NO NO NO Replace SV3E valve Correct installation of s...

Page 182: ...ine address Cause of operation Outdoor line addresses are duplicated Check code name L05 96 d07 AI NET Check code name Duplicated indoor units with priority Displayed on indoor unit with priority Cause of operation 1 Two or more prior indoor units exist This check code is displayed on the set indoor unit when setup of indoor unit with priority is duplicated Priority setup with two or more units is...

Page 183: ...ode is displayed on the unit other than the setup indoor unit and outdoor unit As only one indoor unit with priority is valid change the setup Check code name L07 99 d07 AI NET Check code name Group line in individual indoor unit Cause of operation The group line is connected in the individual indoor unit Is there group cabling Check indoor P C board Failure Replace There is individual indoor unit...

Page 184: ...ned on at the first time after installation Because the address is not yet set up Turn on the power of indoor units Turn on the power of outdoor unit again Are powers of all the indoor units turned on Disconnect connectors between U1 U2 and U3 U4 Clear addresses Refer to Address clear Re execute address setup Refer to Address setup YES NO Set up capacity data of indoor unit Setup item code DN 11 C...

Page 185: ...ation Central control addresses are duplicated Check code name L28 46 d07 AI NET Check code name Quantity over of connected outdoor units Cause of operation 1 Quantity over of connected outdoor units 2 Connection error of communication line between outdoor units 3 Outdoor I F P C board error Are not two or more central control system identical network addresses connected Check the network adaptor ...

Page 186: ... with trouble Correct connection of connector Replace communication line I F P C board error I F P C board error Correct connection of connector Is there voltage fluctuation between 4 and 5 pins of CN600 on I F P C board Measurement by tester DC0 to 5V 5 pin GND Is there voltage fluctuation between 3 and 5 pins of CN600 on I F P C board Measurement by tester DC0 to 5V 5 pin GND Is jumper setup of ...

Page 187: ...odels installed with AC fan motor only Does outside device correctly operate Check cause of the operation Is outside device connected to connector CN80 Check indoor P C board Failure Replace Check outside device Failure Replace YES YES NO NO Check outdoor I F P C board Is there any trouble of outdoor unit power supply Check power voltage and line Check auxiliaty noise etc NO YES Is not there mecha...

Page 188: ...e coil or replace SV41 valve Are characteristics of TD1 sensor resistance normal Are service valve of gas and liquid sides fully opened Are not indoor units of different refrigerant circuit connected Refrigerant shortage clogging pipe breakage Connector CN300 301 White Refer to Outdoor unit temperature sensor characteristics 4 Check there is no pipe breakage and then recharge the refrigerant Check...

Page 189: ...sure SW operate Are parts of high pressure SW normal Is service valve fully opened B Cooling operation Is SV2 circuit normal Open service valve fully Replace the high pressure sensor Repair faulty parts Eliminate the interfered causes Repair SV2 circuit Is circuit cabling normal Check and correct cabling Does cooling outdoor fan normally operate Is there no crack or coming off of fan Are character...

Page 190: ...f wiring etc Are not indoor units of different refrigerant circuit connected Is there clogging of valve Is indoor PMV normal Does heating indoor fan normally operate Repair faulty parts A C Repair faulty position Connector connection cabling coil installation clogging etc Refrigerant overcharge clogging pipe breakage abnormal overload condition Check and correct the cabling Check with miscabling c...

Page 191: ...Power voltage error 2 Outdoor fan system error 3 Heat sink installation error 4 Clogging of hear sink cooling duct 5 IPDU P C board error TH sensor error Sub code 01 Compressor 1 side 02 Compressor 2 side Correct wiring such as cable to compressor or connector connection Is power voltage normal Is indoor fan normal Check IPDU P C board Is wiring of IPDU normal Is screw between IPDU and heat sink l...

Page 192: ...s 380 415V voltage of 1 3 pin of CN68 on indoor P C board Check drain pipe etc Does drain pump operate Does float SW operate Is wiring normal Is power supply to drain pump normal Replace drain pump and check cabling Check indoor P C board Failure Replace Check indoor P C board Failure Replace Check and correct wiring Correct connector connection YES YES YES YES YES NO NO NO NO NO Is float SW conne...

Page 193: ... fan motor position detective circuit Is not winding 1 Yellow lead to 4 Pink lead opened shorted Resistance should be 5 to 20k 3 Check fan motor position detective signal Measure voltage with tester between CN334 1 and 5 on indoor P C board MCC 1402 under condition of CN333 and CN334 installed and power ON Turn fan slowly with hands so that pin voltage fluctuates between 0 and 5V Between 4 and 5 5...

Page 194: ... which compressors are driven in cooling operation Is there no clogging of SV3B valve of a unit other than unit with error Are balance pipe service valves of all units fully opened Are connections of outdoor PMV1 PMV2 connectors correct Are operations of outdoor PMV1 PMV2 normal Are characteristics of Pd sensor Ps sensor output voltage normal Replace clogging parts Replace clogging parts PMV error...

Page 195: ...rcuits Are service valves at gas and liquid side fully opened Are characteristics of TS1 sensor resistance normal Is there no leakage of SV41 and 42 valve circuits Refrigerant shortage clogging pipe breakage Connectors CN300 301 White Refer to outdoor temp sensor characteristics 2 Check there is no clogging and pipe breakage and then recharge refrigerant Coil valve body disconnection of cable etc ...

Page 196: ...ect cabling Are service valves of gas and liquid sides fully opened Are characteristics of TD1 TD2 sensor resistance normal Is SV4 valve circuit normal Coil misinstallation valve leakage Are not indoor units in different refrigerant circuit connected Refrigerant shortage clogging pipe breakage Connectors CN300 301 White Refer to outdoor temp sensor characteristics 4 Check with miscabling check fun...

Page 197: ... Refrigerant shortage clogging pipe breakage Connectors CN300 301 White Refer to outdoor unit temperature sensor characteristics 4 Check there is no pipe breakage and then recharge refrigerant Is outdoor PMV normal 1 Connector connection 2 Cabling 3 Coil 4 Valve body 5 Outdoor I F P C board SV4 circuit 1 Are not SV41 and SV42 valve coils installed reversely 2 Is there no leakage through SV42 circu...

Page 198: ...esistance value of TS1 and TE1 sensors normal Are output voltage characteristics of Pd and Ps sensors normal Are connection and installation of TE1 and TL sensors correct Reset the power supply and start heating test operation Correct connector connection 4 way valve coil CN317 Correct connection and installation 1 Check TS and TE temperature of the outdoor unit which compressors is operated I F S...

Page 199: ...breakage abnormal overload condition Are characteristics of high pressure sensor normal Open service valves fully Check parts Failure Replace 1 Pressure by pressure gauge Check joint 2 Pressure display on 7 segment display 3 Output voltage of I F P C board If 1 and 2 3 are different an error of pressure sensor is considered If 2 and 3 are different check I F P C board Is there a cause to interfere...

Page 200: ...istics of sensor TC2 and TCJ resistance normal Is connector connection coil normal Does heating indoor fan normally operate Is check valve of main discharge pipe normal Are not indoor units of different refrigerant circuit connected Check indoor P C board Faulty Replace C Is there a cause to interfere operation of heat exchanger of indoor unit 1 Air filter clogging 2 Heat exchanger clogging 3 Air ...

Page 201: ... sensor error Heat sink overheat D TH sensor error E Vdc error Is not outdoor fan motor locked Is sub code of outdoor I F P C board 0d Check fan IPDU Correct cable connector connection Correct cause of overload Retightening of screws etc Replace fan IPDU Is there no problem such as stuffing or blast blowing to discharge port of outdoor fan Are cable connector connection on fan IPDU and power P C b...

Page 202: ...ssor 1 side 02 Compressor 2 side Is power voltage of outdoor unit normal Is there no fusing of AC30A fuse Replace IPDU P C board Is compressor normal Is wire connector connection on IPDU P C board normal Is smoothing condenser normal 1500µF 350V Correct power line Replace compressor Correct connection of wire connector Check capacity coming out external appearance Replace fuse and IPDU P C board Y...

Page 203: ... in the group is abnormal When the header unit of the group detected E03 L03 L07 L08 error the follower unit of the group displays P31 error and stops There are no check code display and alarm record of the main remote controller Is not grounded Is not winding opened Are connector connection and wiring normal Is not winding shorted Is winding resistance 0 6 to 1 2W Check IPDU P C board Failure Rep...

Page 204: ...er supply Clear check code Eliminate noise etc Check power transformer of the network adaptor P C board MCC 1401 Failure Replace Check central controller Failure Replace Check indoor P C board Failure Replace Did a block out occur Is there no noise etc Does the network adaptor P C board LED D01 turn on Is there no connection error of power line Is not main power supply turned on Are AI NET X and Y...

Page 205: ...conds and the sub code for 1 second are alternately displayed if an sub code is provided 2 Confirm the check code and then conduct the check operation based on the procedure of each check code diagnosis 3 U1 E28 on 7 segment display means a trouble on the follower unit Push the push switch SW04 on the header unit for several seconds As only the fan of the outdoor unit with a trouble drives open th...

Page 206: ...request A Displays with segment LED lighting pattern B 10 11 12 13 14 15 16 Refrigerant oil recovery operation A During sending of cooling refrigerant oil recovery signal C1 Normal time C B During sending of heating refrigerant oil recovery signal H1 Normal time H Automatic address A Ad B Automatic addressing FF Normal time Demand operation A dU B Normal time In 50 to 90 50 to 90 When controlling ...

Page 207: ...tation 00 to FF SW04 push function Inverter frequency is exchanged to decimal notation 7 segment display A B H Normal display by pushing SW05 Outdoor fan step A FP B Step 0 to 31 0 to 31 Compressor backup A Displays No 1 compressor setup status Normal Backup setup C1 B Displays No 2 compressor setup status Normal Backup setup C2 A B Control valve output data Displays control output status of solen...

Page 208: ...l t d 1 1 1 Data Symbol t d 2 1 1 Data Symbol t S Data Symbol t E Data Symbol Data Symbol t L Data Symbol t o Data Symbol F 1 Data Symbol F 2 Data Symbol F 3 Data Symbol F 4 Data SW01 3 SW02 1 2 3 4 5 6 7 SW03 1 to 3 Display contents Error data A U SW03 setup number 1 number Outdoor unit number U2 to U4 B Check code is displayed Latest check code only No check code Installed compressor type A U SW...

Page 209: ... displayed with Hexadecimal notation Indoor TC2 sensor data B Data is displayed with Hexadecimal notation NOTE Indoor address No is chosen by changing SW02 and SW03 SW03 1 2 3 SW02 1 to 16 1 to 16 1 to 16 Indoor address SW02 setup number SW02 setup number 16 SW02 setup number 32 7 segment display A 01 to 16 17 to 32 33 to 48 6 Outdoor EEPROM write in error code display Displayed on the header unit...

Page 210: ...sensors Resistance k 50 0 100 150 200 0 5 10 10 20 30 40 50 60 100 110 120 130 140 150 Characteristic 4 Temperature C Outdoor TD1 TD2 TK1 TK2 TK3 TK4 sensors Resistance k Resistance kW 65 C or higher 50 0 100 150 200 5 0 10 15 20 20 30 10 0 10 20 30 40 50 60 70 80 90 100 Characteristic 5 Temperature C Outdoor TE1 sensor Resistance k 10 C or lower Resistance kW 10 C or higher ...

Page 211: ...to 3 9 V DC 0 5 to 3 5 V DC 0 to 3 33 MPa 0 to 0 98 MPa 9 7 2 Indoor Unit n Temperature sensor characteristics Output at high pressure side V Pressure MPa 0 5 0 3 9 5 3 33 4 41 5 1 Output at low pressure side V Pressure MPa 0 5 0 3 5 5 0 98 1 47 5 1 10 0 20 30 40 10 20 30 40 50 Characteristic 1 Temperature C Indoor TA sensor Resistance k 50 0 100 150 200 5 0 10 15 20 20 30 10 0 10 20 30 40 50 60 7...

Page 212: ...2 85 2 87 2 89 2 91 2 93 2 95 2 97 VOLT 2 99 3 01 3 03 3 05 3 07 3 09 3 11 3 13 3 15 3 16 3 18 3 20 3 22 3 24 3 26 3 28 3 30 3 32 3 34 3 36 3 38 3 40 3 42 3 44 3 46 3 48 3 50 3 52 3 54 3 56 3 57 3 59 3 61 3 63 3 65 3 67 3 69 3 71 3 73 3 75 3 77 3 79 3 81 3 83 3 85 3 87 3 89 3 91 3 93 3 95 3 97 VOLT 3 98 4 00 4 02 4 04 4 06 4 08 4 10 4 12 4 14 4 16 4 18 4 20 4 22 4 24 4 26 4 28 4 30 4 32 4 24 4 36 ...

Page 213: ...2 81 2 83 2 85 2 87 2 89 2 91 2 93 2 95 2 97 VOLT 2 99 3 01 3 03 3 05 3 07 3 09 3 11 3 13 3 15 3 16 3 18 3 20 3 22 3 24 3 26 3 28 3 30 3 32 3 34 3 36 3 38 3 40 3 42 3 44 3 46 3 48 3 50 3 52 3 54 3 56 3 57 3 59 3 61 3 63 3 65 3 67 3 69 3 71 3 73 3 75 3 77 3 79 3 81 3 83 3 85 3 89 3 89 3 91 3 93 3 95 3 97 VOLT 3 98 4 00 4 02 4 04 4 06 4 08 4 10 4 12 4 14 4 16 4 18 4 20 4 22 4 24 4 26 4 28 4 30 4 32 ...

Page 214: ...Option X Y In case of AI NETWORK Network adaptor P C board MCC 1401 Indoor control P C board MCC 1402 DC5V DC20V DC12V DC5V DC280V AI NET communication circuit CPU H8 3687 PMV Louver motor Drain pump Indoor fan motor None for Concealed Duct type EEPROM TA sensor TCI sensor TC2 sensor TCJ sensor Float input HA BUS communication circuit Outdoor unit Power supply 1Ø200 240V 50Hz 1Ø220V 60Hz AC synchr...

Page 215: ... control P C board MCC 1403 DC5V DC20V DC12V DC5V AI NET communication circuit CPU H8 3687 PMV Louver motor Drain pump Indoor fan motor EEPROM TA sensor TCI sensor TC2 sensor TCJ sensor Float input HA BUS communication circuit Outdoor unit Power supply 1Ø200 240V 50Hz 1Ø220V 60Hz AC synchronous signal input circuit Fan motor control circuit Start Alarm Ready ThermostatON COOL HEAT FAN Indoor Outdo...

Page 216: ...C20V DC12V DC5V DC280V AI NET communication circuit CPU H8 3687 PMV Louver motor Drain pump Indoor fan motor None for Concealed Duct type EEPROM TA sensor TCI sensor TC2 sensor TCJ sensor Float input HA BUS communication circuit Outdoor unit Power supply 1Ø200 240V 50Hz 1Ø220V 60Hz AC synchronous signal input circuit CPU TMP88CH 47FG TMP88PH 47FG Fan motor control circuit Start Alarm Ready Thermos...

Page 217: ...PMV Louver motor Drain pump Indoor fan motor EEPROM TA sensor TCI sensor TC2 sensor TCJ sensor Float input HA BUS communication circuit Outdoor unit Power supply 1Ø200 240V 50Hz 1Ø220V 60Hz AC synchronous signal input circuit Fan motor control circuit Start Alarm Ready ThermostatON COOL HEAT FAN Indoor Outdoor communication Outside output Power circuit Remote controller communication circuit 3 Nom...

Page 218: ...ealed Duct type EEPROM TA sensor TCI sensor TC2 sensor TCJ sensor Float input HA BUS communication circuit Outdoor unit Power supply 1Ø200 240V 50Hz 1Ø220V 60Hz AC synchronous signal input circuit CPU TMP88CH 47FG TMP88PH 47FG Fan motor control circuit Start Alarm Ready ThermostatON COOL HEAT FAN Indoor Outdoor communication Outside output Power circuit Max 8 units are connectable 1 1 However in a...

Page 219: ...1 Main Sub Center remote controller Weekly timer Remote controller communication circuit CPU H8 3039 Driver Remote controller communication circuit Power circuit Transformer Transformer Switch setup Same as left 2 2 A B L U1 U2 N L A B N U1 U2 U1 U2 Power supply Outdoor unit Same as left 2 3 A B L U1 U2 N Power supply Outdoor unit Network adaptor Option Indoor unit 1 Central control remote control...

Page 220: ...g type Fan output Optional output HA T10 CHK DISP TA sensor EXCT Used for servicing TC2 sensor TC1 sensor TCJ sensor Remote controller inter unit cable Indoor Outdoor communication Also used for communication of the central control system 1 Indoor Outdoor communication Spare 1 Nome for under ceiling high wall 1 Drain pump output Remote controller power supply LED Optional power supply Power supply...

Page 221: ...uct High Static Pressure type Floor standing cabinet type Floor standing type Floor stabding conceded type 1 2 way Air discharge cassette 1 way Air discharge cassette Floor standing only Outside error input TCJ sensor TC2 sensor TCI sensor CHK DISP Used for servicing Remote controller inter unit wire Optional output HA T10 Remote controller power supply LED Indoor Outdoor communication Also used f...

Page 222: ...ge Cassette Type Concealed Duct High Static Pressure Type Floor Standing CabinetType Floor Standing Concealed Type Floor StandingType MCC 1520 01 COMPONENT SIDE IC01 1 6 CN01 1 6 C03 CN02 C90 I G O 15V GND Control P C board side Output Power supply trans side Input ...

Page 223: ...d Single operation by FAN button on remote controller is set up from remote controller DN 31 HA ON OFF input J01 YES NO Pulse At shipment Static input select Operation stop of main remote controller is permitted prohibited by input ON during operation Answerback of HA ON during alarm output ON when outdoor unit is defrosted ON during Real thermostat ON Compressor ON ON when operation mode is cooli...

Page 224: ...r supply CN401 402 Option input output CN511 High pressure swith1 High pressure swith2 Connection of power supply transformer CN100 SW06 to 14 SV3D SV3E CN323 Dina doctor connecting terminal CN800 Case heater 1 Case heater 2 Accumulator SV3C CN314 SV3B CN313 SV3A CN324 SV2 CN312 SV51 CN310 SW41 42 CN311 BUS terminal End terminal select SW30 SW01 02 03 SW04 05 15 Comp case thermo 2 input CN307 7 se...

Page 225: ... IPDU Reactor 2 IPDU2 only is connected DC330V output IPDU1 only is connected DC330V input Electrolytic condenser Reactor 1 IPDU1 only is connected Connection between IPDU1 and 2 AC230V input Input current sensor Power supply input AC400V Compressor output 5V GND 12V ...

Page 226: ...V input 12V GND Electrolytic condenser CN500 DC330V output for fan IPDU Judgemant DC 180 370V DC330V output For Comp IPDU 7V output Judgement 12V terminal 1 5 7V terminal 2 5 Communication between fan IPDU Communication between I F and fan IPDU ...

Page 227: ... Size UP For outdoor expansion OFF Bit 4 Judge abnormal No of connected indoor units OFF No error judgment ON Error OFF n Follower unit Bit 1 OFF Bit 2 OFF Bit 3 OFF SW09 SW 4bit Bit 4 Display of start priority No OFF Outdoor unit No U 2 to 4 ON Outdoor start order No Y 2 to 4 OFF Bit 1 OFF Bit 2 Outdoor fan high static pressure operation OFF Normal ON High static pressure operation OFF Bit 3 OFF ...

Page 228: ...ckup during cooling season Note 2 Setup procedure To item 2 To item 3 or item 4 Note 1 When a trouble of compressor coil etc occurred deterioration of the oil is heavy Therefore do not perform a backup operation otherwise a trouble of the other outdoor units may be caused Note 2 The outdoor unit to be processed with a backup operation should be restricted to one unit in the system of 1 system 11 2...

Page 229: ...rvice valve of the liquid pipe when there is PMC leakage in outdoor unit PMV does not close 4 In case of trouble on the compressor or electric parts system Compressor electric system parts I F P C board IPDU P C board After then keep OFF for the main power supply of the unit with trouble In case of trouble on the refrigerant circuit parts system Pressure sensor temperature sensor refrigerat circui...

Page 230: ...n SW01 02 03 to 1 1 1 It is normal if U1 are displayed All the backup setup for the header unit has completed Check the operation 11 3 2 In Case of Trouble on Header Unit Backup setup for header unit Work procedure 1 Turn off the main power supplies of all the units connected to the system Setup for outdoor unit with trouble 2 Close fully the gas side service valve of the unit with trouble 3 Leave...

Page 231: ...nd terminal resistance of communication Connection change of the communication line 9 Change the communication line between outdoor and indoor from U1 U2 terminal of the header unit with trouble to U1 U2 of the unit selected as the header unit 10 If a central control device is connected connect the communication line U3 U4 of the central control system to the communication line U3 U4 terminal of t...

Page 232: ... system the backup operation cannot be performed by this setup In this case execute the abovementioned Outdoor Unit Backup Setup Work procedure 1 Turn off the main power supplies of all the units connected to the system Setup for outdoor unit with trouble The following procedure is common even if the outdoor unit with trouble is the header or follower unit 2 Turn on both Bit 1 and 2 of the SW06 on...

Page 233: ... compressor 2 Display example 7 segment display oL A00 Oil level is appropriate in compressor 1 and 2 oL A01 Oil level is appropriate in compressor 1 and shortage in compressor 2 oL A20 Oil shortage in compressor 1 and appropriate in compressor 2 Judgment result in compressor 2 Judgment result in compressor 1 For the contents of judgment result refer to the following table Judgment result of oil l...

Page 234: ...system cannot operate until the defective outdoor unit has been repaired As the operation becomes refrigerant overcharge operation a continuous operation is unavailable Note 3 While both outdoor pulse motor valves are closed cannot open the valves the refrigerant in the heat exchanger cannot be recovered If executing welding after pump down operation recover the refrigerant in the heat ex changer ...

Page 235: ...nt of pressure Unit No While SW01 02 03 are set to 1 1 1 the number displayed on 7 segment display indicates the unit No U indicates the unit No Selection for outdoor units other than unit for adjustment of pressure and troubled unit 9 Keep only the service valve of balance pipe of the unit for pressure adjustment and the troubled unit fully opened and close fully the service valves of other outdo...

Page 236: ... be turned on the solenoid valve PMV of the unit cannot be turned on Therefore the refrigerant recovery amount decreases compared with the usual pump down operation Using a refrigerant recovery device recover the remaining gas in the unit and measure the recovered amount Work procedure Setup for the troubled outdoor unit 1 Using a gauge manifold connect the check joint of the liquid pipe and the l...

Page 237: ...re data is displayed on 7 segment display section close the service valves of the gas pipe gradually with confirming the pressure data and then adjust so that the pressure becomes around 0 12MPa or equivalent 10 When the manifold gauge pressure of the troubled outdoor unit has become almost same as with low pressure of the header unit close fully the service valve of the gas pipe of the unit for p...

Page 238: ...rant amount in system HP 20HP system after backup 28 0kg Refrigerant amount to be recovered 37 5 28 0 9 5kg 3 For the unit which refrigerant has been recovered execute Outdoor Unit Backup Setup in another section All the work has finished System HP 5 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Combination of outdoor units 5 6 8 10 12 8 6 8 8 10 8 10 10 8 8 6 12 10 8 8 8 12 12 1...

Page 239: ...L Sensor TE1 Right side Air heat exchanger at outdoor side Left side Air heat exchanger at outdoor side Solenoid valve SV2 Solenoid valve SV5 Solenoid valve SV41 Solenoid valve SV3A Solenoid valve SV3E Solenoid valve SV3B Solenoid valve SV3D Solenoid valve SV3C 4 Way valve Check joint Low pressure sensor Accumulator Check joint Check joint High pressure sensor High pressure SW Oil separator Check ...

Page 240: ... down error H07 Oil level down error H07 Oil level detective circuit error H16 03 Phenomena Corresponding unit High pressure up Low pressure down Discharge temp up Abnormal high pressure up Abnormal high pressure up Oil equalization circuit error or oil shortage judgment Excessive oil amount Shortage of oil amount Excessive oil amount Shortage of oil amount Oil equalization circuit error Judgment ...

Page 241: ...cumulator Check joint Check joint High pressure sensor High pressure SW Oil separator Check valve Check valve Check valve Check valve Check valve Compressor 1 Inverter Strainer Strainer Sensor TK1 Sensor TK4 Sensor TK3 Capillary Capillary Capillary Strainer Strainer Strainer Strainer Strainer Strainer Capillary Capillary Solenoid valve SV42 High pressure SW Check valve Check valve Compressor 2 Inv...

Page 242: ...more Judge the oil status based on the oil color and then decide to exchange the troubled compressor only or both compressors Turn off power of the troubled outdoor unit Take off the troubled compressor Exchange the troubled compressor only Measure oil amount of the troubled compressor Replace both troubled compressor and normal compressor Measure oil amount of the normal compressor Adjust oil amo...

Page 243: ...n remove the entire electric parts box completely Remove the lower duct M4 4 Take off the sound insulation mat Remove the crank case heater Take off the terminal cover of the compressor the wiring to the compressor and the case thermostat unit NOTE Be sure to apply insulate to the removed cable terminals with insulating tape etc To exchange the compressor remove cables of the compressor only Remov...

Page 244: ...ssor to 1000cc Lay down the service compressor and then extract oil by 900 cc from the oil equalization pipe NOTE Do not extract oil over 900 cc because a trouble may be caused on the compressor If oil amount of the troubled compressor is below 500cc a trouble on the oil equalization circuit etc is considered Check the compressor based upon 15 3 Check procedure search the cause of com pressor oil ...

Page 245: ...ssor B cc 1 In case of the total oil amount of the compressors A B cc is 0 A B 2000 1 Adjust oil amount in the two service compressors to 1000cc each Total 2000cc Lay down the two service compressors and then extract oil by 900 cc from each oil equalization pipe NOTE Do not extract oil over 900 cc because a trouble may be caused on the compressor If oil amount of the troubled compressor is below 5...

Page 246: ...pump to the valve charge ports of the liquid and gas pipes and the check joint at high pressure side and then drive the vacuum pump Vacuum until the vacuum low pressure gauge indicates 1 mmHg NOTE Before vacuuming open PMV fully Vacuuming may not be executed for the heat exchanger of the outdoor unit under condition of PMV closed In case of multiple outdoor units system In case of conducting the r...

Page 247: ...sed in from check joint of discharge pipe leakage from check valve of oil equalization circuit is considered Exchange the parts 5 Open SV3B valve manually under condition that nitrogen gas is pressed in from check joint of discharge pipe When gas leaks from welded part of suction pipe where compressor has been removed SV3A valve leakage is considered Exchange the parts Next open SV3A valve and SV3...

Page 248: ...t High pressure sensor High pressure SW Oil separator Check valve Check valve Check valve Check valve Check valve Compressor 1 Inverter Strainer Strainer Sensor TK1 Sensor TK4 Sensor TK3 Capillary Capillary Capillary Strainer Strainer Strainer Strainer Strainer Strainer Capillary Capillary Solenoid valve SV42 High pressure SW Check valve Check valve Compressor 2 Inverter Strainer Sensor TK2 Sensor...

Page 249: ...ont rear at lower side of the cabinet M5 10 7 pcs each 4 Take off screws of the service panel M5 10 3 pcs 5 Take off screws Front rear sides of the suction cabinet M5 10 4 pcs each M4 10 2 pcs each 6 Take off screws Right left sides of the side panel M5 10 4 pcs each Remarks 2 Propeller fan motor REQUIREMENT Put on gloves during working otherwise an injury may be caused by parts etc Disassembling ...

Page 250: ...t the propeller fan If tightening D cut surface as it is out of place the propeller fan melts due to friction heat resulted in falling off 2 Be sure to attach the square washer Abnormal sound or abnormal vibration may generate 3 Tighten the flange nut with 15N m 153kg cm 4 Insert hooking claws of the discharge cabinet securely into the claw holes of the cabinet Refer to photo in the previous page ...

Page 251: ...d M5 10 6 pcs 5 Take off screws of the support M5 10 3 pcs 2 6 Take off screws of waterproof board M4 10 3 pcs 7 Remove brazing section of the connected pipe 4 positions 8 Take off screws of the support at rear side and then pull out the heat exchanger M5 10 2 pcs 2 Motor base Heat exchanger Left Heat exchanger Right Heat exchanger Left Heat exchanger Right 5 Support 4 Heat exchanger fixing board ...

Page 252: ...ioner and then turn off switch of the breaker 2 Take off the inverter cover M4 10 2 pcs 3 Take off screws fixing the box 1 pc each at upper and lower sides 4 Push down lightly the fixing claw at lower side to take off the claw Lower part of the box is out forward 5 Take off hooking claw at upper side while holding the ceiling board with both hands Remarks Reassembly and cautions 1 Hook the upper c...

Page 253: ...e P C board it is necessary to set up jumper line etc for each model Refer to Exchange procedure of interface P C board Remarks 3 IPDU P C board 4 IPDU P C board for fan 1 Stop operation and then turn off switch of the breaker 2 Take off the heat sink Radiator plate fixing screws M4 16 2 pcs 3 Take off cables 4 Remove P C board from the card edge spacer at the corners Heat sink fixing screw compre...

Page 254: ...tic condenser may be unavailable and voltage may remain in some cases due to trouble conditions be sure to perform discharge of the condenser 2 Using resistance for discharge 100Ω 40W or equivalent or plug of the soldering iron make continuity and discharge between and poles This electrolytic condenser has a large capacity Therefore it is dangerous to make discharge by shortening between and poles...

Page 255: ...ter assembly Rear side Front side Oil tank Liquid tank SV3C SV3A SV3D SV3B SV3E SV2 PS sensor PD sensor SV5 SV41 SV42 Accumulator Oil separator Compressor 2 Inverter assembly TD1 sensor Yellow TD2 sensor Red TS1 sensor Gray Accumulator TL sensor White TL sensor White Compressor 1 Compressor 2 TD1 sensor Yellow TD2 sensor Red TS1 sensor Gray Accumulator TL sensor White Compressor 1 Compressor 2 7 T...

Page 256: ...H Ø8 0 Ø19 05 between SE3E valve and suction pipe Ø8 0 Ø19 05 between SV41 valve and suction pipe Ø8 0 Ø19 05 between SV42 valve and suction pipe Ø6 35 Ø15 88 between SV2 valve and discharge pipe Ø6 35 Ø15 88 between SV3C valve and discharge pipe MAP1201H 1001H 0801H Ø8 0 Ø25 4 MAP0601H 0501H Ø8 0 Ø19 05 between SE3E valve and suction pipe Ø8 0 Ø19 05 between SV41 valve and suction pipe Ø8 0 Ø19 0...

Page 257: ...th fingers the claw comes off from the square hole Remarks Assembly 1 The fixing rubber is a segmentation system due to freedom degree of combination Therefore for assembly it is recommended to fit both pipes including the fixing rubber after passing the rubber through the pipes separately In this time check both slit direct the same direction 2 Align the claw side of SUS band to slit side of the ...

Page 258: ...he outdoor unit 1 Remove the lower cabinet rear side 2 Take off fixing screws M6 3 pcs for accumulator leg base board 3 Remove the accumulator fixing board fixing screws of accumulator M6 2 pcs The accumulator fixing board is fixed to the middle partition board Take off the screws only which fix to the accumulator unit 4 Remove the pipe brazing part connected to SV2 valve 5 Remove the discharge ca...

Page 259: ... factory The important setup data such as line indoor group address which are set up Auto Manual or high ceiling exchange setup at installation time respectively Proceed with exchange of P C board assembly for indoor service in the following procedure After exchange work check again the setup for indoor unit No or group header follower units to confirm whether the setup contents are correct or not...

Page 260: ...group control are displayed successively 2 Specify the indoor unit No to be exchanged The fan of the selected indoor unit operates and also starts swinging in a model with flap 3 Using temperature setup buttons the item code DN can be moved up down one by one 3 4 First change the item code DN from 10 01 Setup of filter sign lighting time In this time make a note of contents of the displayed setup ...

Page 261: ...ndoor units and proceed to Procedure 3 When the above methods cannot be used follow to the two cases below C In case that power of the indoor units cannot be turned on individually Case 2 a Remove all CN41 connectors of the indoor units in the same group except those of the exchanged indoor unit b Turn on power of the indoor units and proceed to Procedure 3 After Procedure 3 operation has finished...

Page 262: ...setup buttons set 01 to the item code DN Lighting time setup for filter sign 6 Compare the contents of the setup data which is displayed in this time with contents noted in a memo in Procedure 1 and customer s information 1 If data is incorrect change it using the timer time buttons so that it matches with contents noted in a memo and then push SET button OK if display goes on 2 Do nothing if data...

Page 263: ...0003 3 deg Ts 1 5 0000 None 0000 Normal 0000 Body sensor 0000 Standard 0000 Possible Type Item code 10 The initial setup value of EEPROM installed on the service P C board Automatic selection by connected outdoor unit Indoor unit capacity Item code 11 Setup data 0000 0001 0002 0003 0004 0005 0006 0007 0008 0009 0010 0011 0012 0013 0014 0015 Model Invalid 0071 type 0091 type 0121 type 0151 type 018...

Page 264: ...ortion on the fasten terminals when reconnecting the compressor lead to the compressor terminals If any distortion is found caulk the fasten terminal with pliers etc and then connect it How to check resistance or compressor winding 1 Turn off the power supply 2 Remove the compressor lead from the compressor 3 Using a tester check the winding resistance between each phases of each compressor and re...

Page 265: ...0 and Between CN500 and Criteria DC260 to DC340V DC12V DC7V 2 How to check fan IPDU 1 Check that the lead wires are correctly inserted into 250 fasten terminal of DC280V input and into the communication connector CN01 2 After then replace the fan IPDU if an abnormality is recognized MCC 1439 Front View 1 5 AC RED CN510 R523 C522 C521 R511 R518 IC501 1 3 6 10 IN L500 L506 C513 3 CAPA BLK CN506 1 3 ...

Page 266: ...MMY MAP0601H8 INV MMY MAP0601H7 INV MMY MAP0801H8 INV MMY MAP0801H7 INV MMY MAP1001H8 INV MMY MAP1001H7 INV MMY MAP1201H8 INV MMY MAP1201H7 INV J09 J10 J11 Yes Yes Yes Disconnect Leave intact Disconnect Leave intact Leave intact Disconnect Disconnect Disconnect Leave intact Leave intact Disconnect Leave intact Disconnect Leave intact Leave intact Dip Switch SW07 SW10 SW11 SW13 SW14 SW30 Setting co...

Page 267: ...ur card edge spacers 6 Set the dip Switch SW801 of the Comp IPDU board as instructed in the table below If the model is not specified inspection L29 is displayed and the equipment will not operate 7 After setting the dip Switch of the service board apply silicone grease evenly onto the IGBT and install it in the outdoor control unit Confirm that it is securely fixed to the card edge spacers 8 Fix ...

Page 268: ...he capacitor Discharge to a safe level 10 volts D C or LESS Test with a D C Voltmeter as shown COMP IPDU No 1 and COMP IPDU No 2 have the same electric potential but both voltages shall be measured Never discharge the capacitor terminals with any metal implement Personal injury or equipment damage may result TO REACTOR 1 COMP IPDU No 1 CN20 REACTOR 1 CN21 REACTOR 1 TO REACTOR 2 COMP IPDU No 2 CN08...

Page 269: ...269 Inverter Assembly Configuration Fan IPDU Power supply P C board for fan Noise filter Power supply terminal block Over current relay BUS terminal block Magnet SW IPDU1 IPDU2 Interface P C board ...

Page 270: ......

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