Mitsubishi Electric PUZ-ZM60VHA2 Page 55 Service Manual Download

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OCH771

198 to 264 V AC?

12 to 16 V DC?

YES

Check the voltage between S1

and S2 on the terminal block

(TB4) of the indoor unit which

is used to connect the indoor

unit and the outdoor unit.

Check the voltage among L(L

) and

N on the terminal block (TB1) of the

outdoor power circuit board.

Check the voltage of indoor

controller board (CN2D).

Check the voltage of the unit after

removing the indoor power board

(CN2S).

Check the voltage between S1

and S2 on the terminal block

(TB1) of the outdoor unit which

is used to connect the indoor

unit and the outdoor unit.

• Troubles concerning

power supply

• Check the power wiring

to the outdoor unit.

• Check the breaker.

• Bad wiring of the

outdoor controller

board

• The fuses on the

outdoor controller

circuit board are

blown.

• Check the wiring of the

outdoor unit.

• Check if the wiring is bad.

Check if the fuses are blown.

The fuses on the outdoor

controller circuit board will

be blown when the indoor

/outdoor connecting wire

short-circuits.

• Bad wiring of the

outdoor controller

board

• The fuses on the

outdoor controller

circuit board are

blown.

• Check if miswiring, breaking

or poor contact is causing this

problem. Indoor/outdoor

connecting wire is polarized

3-core type. Connect the

indoor unit and the outdoor

unit by wiring each pair of

S1, S2 and S3 on the both

side of indoor/outdoor

terminal blocks.

• Defective indoor

power board

• Replace the indoor

power board.

• Defective indoor

controller board

• Replace the indoor

controller board.

• Miswiring, breaking

or poor connection of

indoor/outdoor

connecting wire

• Check if there is miswiring

or breaking of wire.

Symptoms: Nothing is displayed on the remote controller.

Diagnosis flow

Cause

Inspection method and

troubleshooting

LED display of the indoor

controller board

LED1:

LED2:

LED3:

Summary of Contents for PUZ-ZM60VHA2

Page 1: ...UK PUZ ZM140VKA2 UK PUZ ZM140VKA2 ET UK PUZ ZM140VKA2 ER UK PUZ ZM100YKA2 UK PUZ ZM100YKA2 ET UK PUZ ZM100YKA2 ER UK PUZ ZM125YKA2 UK PUZ ZM125YKA2 ET UK PUZ ZM125YKA2 ER UK PUZ ZM140YKA2 UK PUZ ZM140YKA2 ET UK PUZ ZM140YKA2 ER UK PUZ ZM200YKA2 UK PUZ ZM250YKA2 UK PARTS CATALOG OCB771 Note This manual describes service data of the outdoor units only No OCH771 September 2021 CONTENTS 1 REFERENCE MA...

Page 2: ...M71 100 125 140KA PSA M71 100 125 140KA ET PSA M71 100 125 140KA ER PSA M71 100 125 140KA PSA M71 100 125 140KA ET PSA M71 100 125 140KA ER OCH724 OCB724 SLZ M35 50 60FA2 SLZ M35 50 60FA2 ET SLZ M35 50 60FA2 ER SLZ M35 50 60FA2 TH SLZ M35 50 60FA2 ET TH SLZ M35 50 60FA2 ER TH SEZ M35 50 60 71DA2 SEZ M35 50 60 71DA2 ET SEZ M35 50 60 71DA2 ER SEZ M35 50 60 71DAL2 SEZ M35 50 60 71DA2 TH SEZ M35 50 60...

Page 3: ...rt dust or moisture enters into refrigerant cycle that can cause deterioration of refrigerant oil or malfunction of com pressor Use the following tools specifically designed for use with R32 refrigerant The following tools are necessary to use R32 refrigerant Flare tool Electronic refrigerant charging scale Vacuum pump adaptor Size adjustment gauge Gauge manifold Torque wrench Gas leak detector Ch...

Page 4: ... refrigerant leaks and accumulates it may ignite or poisonous gases may be released 11 Do not install the unit in places where refrigerant may build up or places with poor ventilation such as a semi basement or a sunken place in outdoor Refrigerant is heavier than air and inclined to fall away from the leak source 12 Do not use means to accelerate the defrosting process or to clean other than thos...

Page 5: ...he Refrigeration Equipment Where electrical components are being changed they shall be fit for the purpose and to the correct specification At all times the manufacturer s maintenance and service guidelines shall be followed If in doubt consult the manufacturer s technical department for assistance The following checks shall be applied to installations using flammable refrigerants The charge size ...

Page 6: ... conventional procedures shall be used However for flammable refrigerants it is important that best practice is followed since flammability is a considera tion The following procedure shall be adhered to remove refrigerant purge the circuit with inert gas evacuate purge again with inert gas open the circuit by cutting or brazing The refrigerant charge shall be recovered into the correct recovery c...

Page 7: ...to cylinders ensure that only appropriate refrig erant recovery cylinders are employed Ensure that the correct number of cylinders for holding the total system charge are available All cylinders to be used are designated for the recovered refrigerant and labelled for that refrigerant i e special cylinders for the recovery of refrigerant Cylinders shall be complete with pressure relief valve and as...

Page 8: ...e After operating the cooling system for about 30 minutes do a pump down work Disconnect the existing air conditioner from the pipes Attach the new air conditioner Test run The existing pipes cannot be reused Use new pipes The existing pipe thickness does not meet specifications or the pipes are damaged 8 OCH771 2 3 PRECAUTIONS WHEN REUSING EXISTING R22 R410a REFRIGERANT PIPES 1 Flowchart 5 Servic...

Page 9: ... 17 0 22 0 24 0 27 0 36 0 Nominal dimensions in Flare nut dimensions Outside diameter Dimension B mm mm R32 R410a R22 36 00 mm for indoor unit of ZM100 125 and 140 Gauge manifold Charge hose Gas leak detector Refrigerant recovery equipment Refrigerant cylinder Safety charger Charge valve Vacuum pump Flare tool Bender Pipe cutter Welder and nitrogen gas cylinder Refrigerant charging scale Vacuum ga...

Page 10: ... there is insufficient ventilation refrain from using of flames until the work environment can be improved by ensuring appropriate ventilation Install outdoor units in a place where at least one of the four sides is open and in a sufficiently large space with out depressions 2 5 Minimum installation area If you unavoidably install a unit in a space where all four sides are blocked or there are dep...

Page 11: ...nt to be added locally refer to the installation manual Install the indoor unit so that the height from the floor to the bottom of the indoor unit is h0 For wall mounted 1 8 m or more For ceiling suspended cassette and ceiling concealed 2 2 m or more For floor standing PSA M 0 m There are restrictions in installation height for each model so read the installation manual for the particular unit 75 ...

Page 12: ...charging work during installation often causes problems It is completely eliminated by chargeless system This unique system improves the quality and reliability of the work done It also helps to speed up the installation time PUZ ZM100VKA2 ET ER PUZ ZM125VKA2 ET ER PUZ ZM140VKA2 ET ER PUZ ZM100YKA2 ET ER PUZ ZM125YKA2 ET ER PUZ ZM140YKA2 ET ER PUZ ZM200YKA2 PUZ ZM250YKA2 PUZ ZM60VHA2 ET ER PUZ ZM7...

Page 13: ...8 5 8 Connection method Indoor side Flared Outdoor side Flared Between the indoor outdoor unit Height difference Maximum 30 m Piping length Maximum 100 m Service Ref PUZ ZM60VHA2 ET ER UK PUZ ZM71VHA2 ET ER UK OUTDOOR UNIT Power supply phase frequency voltage Single 50Hz 230V Max current A 19 0 External finish Munsell 3Y 7 8 1 1 Refrigerant control Linear Expansion Valve Compressor Hermetic Model ...

Page 14: ...r side Flared Outdoor side Flared Between the indoor outdoor unit Height difference Maximum 30 m Piping length Maximum 100 m Service Ref PUZ ZM200YKA2 UK PUZ ZM250YKA2 UK OUTDOOR UNIT Power supply phase frequency voltage 3 phase 50Hz 400V Max current A 22 5 External finish Munsell 3Y 7 8 1 1 Refrigerant control Linear Expansion Valve Compressor Hermetic Model AVB52FBAMT Motor output kW 3 8 Starter...

Page 15: ...0 0 480 0 320 U W 1 160 0 480 0 320 W V 1 160 0 480 0 320 Service Ref PUZ ZM100YKA2 ET ER UK PUZ ZM125YKA2 ET ER UK PUZ ZM140YKA2 ET ER UK PUZ ZM200YKA2 UK PUZ ZM250YKA2 UK Compressor model DVB28FCJMT DVB36FCKMT AVB52FBAMT Winding Resistance Ω U V 1 240 0 750 0 305 U W 1 240 0 750 0 305 W V 1 240 0 750 0 305 Main piping Liquid line size ø9 52 overall length m o 0 04 Gas line ø25 4 Branch piping Li...

Page 16: ...00 8000 BAND CENTER FREQUENCIES Hz APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE NC 60 NC 50 NC 40 NC 30 NC 20 NC 70 COOLING MODE HEATING 49 SPL dB 51 LINE PUZ ZM60VHA2 ET ER UK PUZ ZM71VHA2 ET ER UK PUZ ZM125VKA2 ET ER UK PUZ ZM140VKA2 ET ER UK PUZ ZM125YKA2 ET ER UK PUZ ZM140YKA2 ET ER UK PUZ ZM100VKA2 ET ER UK PUZ ZM100YKA2 ET ER UK 90 80 70 60 50 40 30 20 10 OCTAVE BAND SOUND PRESSURE ...

Page 17: ...F HEARING FOR CONTINUOUS NOISE COOLING MODE HEATING 59 SPL dB 62 LINE NC 60 NC 50 NC 40 NC 30 NC 20 NC 70 90 80 70 60 50 40 30 20 10 OCTAVE BAND SOUND PRESSURE LEVEL dB 0 dB 0 0002 µbar 63 125 250 500 1000 2000 4000 8000 BAND CENTER FREQUENCIES Hz APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE COOLING MODE HEATING 59 SPL dB 62 LINE NC 60 NC 50 NC 40 NC 30 NC 20 NC 70 PUZ ZM200YKA2 UK PUZ ZM...

Page 18: ... 50 Voltage V 230 230 Current A 5 66 6 77 6 72 7 41 Refrigerant circuit Discharge pressure MPa 2 62 2 54 2 74 2 33 Suction pressure MPa 1 00 0 72 1 02 0 68 Discharge temperature C 79 85 77 80 Condensing temperature C 44 43 46 39 Suction temperature C 15 4 13 1 Ref pipe length m 7 5 7 5 7 5 7 5 Indoor side Intake air temperature D B C 27 20 27 20 W B C 19 15 19 15 Outdoor side Discharge air tempera...

Page 19: ...e Hz 1 3 50 1 3 50 1 3 50 Voltage V 230 400 230 400 230 400 Current A 8 99 3 08 10 60 3 74 13 75 4 91 14 64 5 36 15 24 5 34 17 72 6 27 Refrigerant circuit Discharge pressure MPa 2 52 2 54 2 69 2 74 2 72 2 85 Suction pressure MPa 1 09 0 74 0 84 0 67 0 83 0 64 Discharge temperature C 65 78 71 86 75 89 Condensing temperature C 42 41 45 45 46 47 Suction temperature C 10 2 8 1 8 1 Ref pipe length m 7 5...

Page 20: ...0 Current A 7 64 8 67 10 6 12 3 Refrigerant circuit Discharge pressure MPa 2 86 2 6 2 96 2 86 Suction pressure MPa 1 11 0 84 0 9 0 67 Discharge temperature C 82 74 85 88 Condensing temperature C 46 42 48 47 Suction temperature C 10 1 9 0 Ref pipe length m 7 5 7 5 7 5 7 5 Indoor side Intake air temperature D B C 27 20 27 20 W B C 19 15 19 15 Outdoor side Discharge air temperature D B C 13 40 12 45 ...

Page 21: ...21 OCH771 PUZ ZM60VHA2 ET ER UK PUZ ZM71VHA2 ET ER UK 6 OUTLINES AND DIMENSIONS 1 2 1 1 2 Unit mm ...

Page 22: ...2 OCH771 Unit mm PUZ ZM100VKA2 ET ER UK PUZ ZM125VKA2 ET ER UK PUZ ZM140VKA2 ET ER UK PUZ ZM100YKA2 ET ER UK PUZ ZM125YKA2 ET ER UK PUZ ZM140YKA2 ET ER UK PUZ ZM200YKA2 UK PUZ ZM250YKA2 UK 1 2 3 1 2 3 3 ...

Page 23: ...23 OCH771 PUZ ZM60VHA2 ET ER UK PUZ ZM71VHA2 ET ER UK 7 WIRING DIAGRAM ...

Page 24: ...24 OCH771 PUZ ZM100VKA2 ET ER UK ...

Page 25: ...25 OCH771 PUZ ZM125VKA2 ET ER UK PUZ ZM140VKA2 ET ER UK ...

Page 26: ...26 OCH771 PUZ ZM100YKA2 ET ER UK PUZ ZM125YKA2 ET ER UK PUZ ZM140YKA2 ET ER UK ...

Page 27: ...27 OCH771 PUZ ZM200YKA2 UK PUZ ZM250YKA2 UK ...

Page 28: ...ndoor unit 4 12 VDC 12 VDC 12 VDC Outdoor unit model ZM100 125 140Y ZM200 250Y Outdoor unit power supply 3N 3 ph 4 wires 50 Hz 400 V 3N 3 ph 4 wires 50 Hz 400 V Outdoor unit input capacity main switch Breaker 1 16 A 32 A Wiring Wire No size mm Outdoor unit power supply 5 5 Min 1 5 5 Min 4 Indoor unit Outdoor unit 2 3 1 5 Polar Cable length 50m 3 4 Polar Cable length 80m 3 6 Polar Indoor unit Outdo...

Page 29: ...it Remote controller L N 1 1 system Electrical wiring Synchronized twin triple and quadruple system Electrical wiring Synchronized twin Synchronized triple Never splice the power cable or the indoor outdoor connection cable otherwise it may result in a smoke a fire or communication failure 1 1 System Indoor PEA M200 250 Synchronized quadruple B B Earth leakage breaker C wiring circuit breaker or i...

Page 30: ...e table below If the optional indoor power supply terminal kit is used change the indoor unit electrical box wiring referring to the figure in the right and the DIP switch settings of the outdoor unit control board Indoor power supply terminal kit option Indoor unit electrical box connector con nection change Label affixed near each wiring diagram for the indoor and outdoor units Outdoor unit DIP ...

Page 31: ...oller Indoor unit 4 12 VDC 1 A breaker with at least 3 mm contact separation in each pole shall be provided Use earth leakage breaker NV The breaker shall be provided to ensure disconnection of all active phase conductor of the supply 2 Maximum 120 m 3 Maximum 500 m When using 2 remote controllers the maximum wiring length for the remote controller cables is 200 m 4 The figures are NOT always agai...

Page 32: ...are more than 2 earthing spots on the shield wire noise may enter into the shield wire because the earth wire and shield wire form 1 circuit and the electric potential difference occurs due to the impedance difference among earthing spots In the case of single spot earthing noise does not enter into the shield wire because the earth wire and shield wire do not form 1 circuit To avoid communication...

Page 33: ...ches are OFF All refrigerant addresses are 00 1 23 4 5 6 7 8 9 0 1 23 4 5 6 7 8 9 0 1 23 4 5 6 7 8 9 0 1 23 4 5 6 7 8 9 0 1 23 4 5 6 7 8 9 0 1 23 4 5 6 7 8 9 0 1 2 50 M NET Address No Setting example Switch setting SW11 10s digit SW12 1s digit OFF ON 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 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...

Page 34: ... TH3 Liquid Distributor 9 REFRIGERANT SYSTEM DIAGRAM PUZ ZM100VKA2 ET ER UK PUZ ZM125VKA2 ET ER UK PUZ ZM140VKA2 ET ER UK PUZ ZM100YKA2 ET ER UK PUZ ZM125YKA2 ET ER UK PUZ ZM140YKA2 ET ER UK PUZ ZM60VHA2 ET ER UK PUZ ZM71VHA2 ET ER UK High pressure switch 63H Thermistor TH8 Control Protection Charge plug High pressure Distributor Thermistor TH7 Ambient Heat exchanger Refrigerant LIQUID pipe connec...

Page 35: ...pressor Strainer 50 Strainer 100 Strainer 100 Strainer 100 4 way valve Muffler Charge plug Low pressure Charge plug High pressure Ball valve Refrigerant GAS pipe connection ø25 4 ø1 inch Refrigerant flow in cooling Refrigerant flow in heating Heat exchanger Thermistor TH6 2 phase pipe Thermistor TH7 Ambient Thermistor TH3 Liquid Distributor Thermal protector TRS ZM200 connection ø9 52 ø3 8 inch ZM...

Page 36: ...cting operation cooling test run Push the pump down SWP switch push button type on the control board of the outdoor unit The compressor and venti lators indoor and outdoor units start operating refrigerant collecting operation begins LED1 and LED2 on the control board of the outdoor unit are lit Only push the pump down SWP switch if the unit is stopped However even if the unit is stopped and the p...

Page 37: ...d operation manual before test run Especially items to secure safety 10 2 2 TEST RUN Refer to 15 4 TEST RUN for operation procedure 10 2 3 ERROR INFORMATION Refer to 15 2 ERROR INFORMATION when an error occurs 10 2 4 ERROR HISTORY Refer to 15 6 ERROR HISTORY to check the errors occurred in the past 10 2 5 SELF DIAGNOSIS Refer to 15 7 SELF DIAGNOSIS to search for the error history Unit conditions a...

Page 38: ...mber of times Wireless remote controller Wired remote controller Beeper sounds OPERATION INDICATOR lamp blinks Check code Number of times Wireless remote controller Wired remote controller 1 P1 Intake sensor error P9 Pipe TH5 sensor error 2 P2 Pipe TH2 sensor error 3 E6 E7 Indoor outdoor unit communication error 4 P4 Drain sensor error Float switch connector CN4F open 5 P5 Drain pump error PA Forc...

Page 39: ...it board 3 Check connection of the connector CNDC on the outdoor controller circuit board Check connection of the connector CNDC on the outdoor power circuit board ZM60 140V noise filter circuit board ZM100 250Y Refer to 10 8 TEST POINT DIAGRAM 4 Check connection of reactor DCL ACL4 or ACL Refer to 7 WIRING DIAGRAM 5 a Check connection of outdoor noise filter circuit board b Replace outdoor noise ...

Page 40: ...nnected to one outdoor unit If EA is detected 4 6 Turn the power off once and on again to check Replace outdoor controller circuit board indoor controller board or indoor power board if abnormality occurs again 7 Check if refrigerant addresses SW1 3 to SW1 6 on outdoor controller circuit board are overlapping in the case of group control system 8 Check transmission path and remove the cause Note T...

Page 41: ...inutes Abnormal if condenser evaporator temperature thermistor TH5 exceeds 40 C during defrosting and discharge temperature thermistor TH4 TH33 exceeds 110 C Abnormal if discharge superheat Cooling TH4 or TH33 TH5 Heating TH4 or TH33 TH6 increases All the conditions in A or B are detected simultaneously for 10 minutes continuously after 6 minutes past from compressor startup including the thermost...

Page 42: ...UNCTION OF SWITCHES CONNECTORS AND JUMPERS 6 Replace outdoor power circuit board 7 Replace outdoor controller circuit board U6 4250 Power module Check abnormality by driving power module in case overcurrent is detected UF or UP error condition 1 Outdoor stop valve is closed 2 Decrease of power supply voltage 3 Looseness disconnection or reverse of compressor wiring connection 4 Defective compresso...

Page 43: ...place outdoor converter circuit board ZM100 140Y 6 Check RS wiring ZM100 250Y 7 Replace RS ZM100 250Y 8 Check CN2 wiring ZM100 250Y 9 Replace outdoor controller circuit board ZM60 140V 04 Input current sensor error L1 phase open error Decrease in input current through outdoor unit to 0 1A only if operation frequency is more than or equal to 40Hz or compressor current is more than or equal to 6A 1 ...

Page 44: ...e outdoor fan fan motor or short cycle of outdoor unit during cooling operation 2 Defective outdoor pipe thermistor TH3 3 Defective outdoor controller board 1 Check outdoor unit air passage 23 Turn the power off and on again to check the check code If U4 is dis played follow the U4 processing direc tion The check code in the parenthesis indi cates PAR 4xMAA x represents 0 or later UF 4100 Compress...

Page 45: ...fect on board if voltage among phases U V V W and W U is same Make sure to perform the voltage check with same performing frequency 8Replace outdoor power circuit board 9Check the DIP switch setting of outdoor controller circuit board E0 or E4 Remote controller transmission error E0 signal receiving error E4 Abnormal if main or sub remote controller cannot receive normally any transmission from in...

Page 46: ...nal for 3 minutes from outdoor controller circuit board a signal which allows outdoor controller circuit board to transmit signals 1 Contact failure short circuit or miswiring reversed wiring of indoor outdoor unit connecting wire 2 Defective transmitting receiving circuit of outdoor controller circuit board 3 Defective transmitting receiving circuit of indoor controller board 4 Noise has entered ...

Page 47: ...f power inverter 12 Turn the power off and on again to check Replace indoor controller board or outdoor controller circuit board if abnormality is displayed again 3 Replace outdoor unit with power inverter type outdoor unit Ed 0403 Serial communication error Abnormal if serial communication between outdoor controller circuit board and outdoor power circuit board is defective 1 Breaking of wire or ...

Page 48: ...ith room temperature display on remote controller and outdoor controller circuit board Pipe liquid or condenser evaporator temperature display is indicated by set ting SW2 of outdoor controller circuit board as follows Conduct temperature check with outdoor controller circuit board after connecting A Control Service Tool PAC SK52ST 1 2 3 4 5 6 ON OFF 1 2 3 4 5 6 ON OFF 1 2 3 4 5 6 ON OFF 1 2 3 4 5...

Page 49: ...of collision of transmission Data could not reach transmission wire for 8 to10 minutes continuously because of noise etc Note The address and attribute displayed at remote controller indicate the controller that detected abnormality 1 Transmission processor could not transmit signal because short cycle voltage of noise and the like have entered into transmission wire continuously 2 Transmission qu...

Page 50: ...unit and FRESH MASTER or LOSSNAY at the same time for 2 minutes or more and turn the power on again If the cause of trouble is not in 1 5 above in single refrigerant system one outdoor unit controller of displayed address or attribute is defective If the cause of trouble is not in 1 5 above in different refrigerant system 2 or more outdoor units judge with 6 6 If address of abnormality source is t...

Page 51: ...ned off or within 2 minutes of restart abnormality is detected 2 Contact failure of transmission wire of indoor unit or FRESH MASTER 3 Disconnection of transmission connector CN2M of indoor unit or FRESH MASTER 4 Defective transmitting receiving circuit of indoor unit or FRESH MASTER 6 If displayed address or attribute is LOSSNAY indoor unit detects abnormal ity when indoor unit transmits signal t...

Page 52: ...to remote controller however no display is indicated Please Wait is not displayed Please Wait is displayed 1Check LED2 on indoor controller board 1 When LED2 is lit check the remote controller wiring for breaking or contact failure 2 When LED2 is blinking check short circuit of remote controller wiring 3 When LED2 is not lit refer to phenomena No 3 below 2Check the following Failure of remote cont...

Page 53: ...s Check if heat exchanger is clogged by inspecting discharging pressure Clean the heat exchanger 4 Remove the blockage 7 Remote controller display works normally and the unit performs heating operation however the capacity cannot be fully obtained 1 Linear expansion valve fault Opening cannot be adjusted well due to linear expansion valve fault 2 Refrigerant shortage 3 Lack of insulation for refri...

Page 54: ...nosis after turning on the main power Normal The startup diagnosis will be over in around 2 minutes Miswiring of indoor outdoor connecting wire Breaking of indoor outdoor connecting wire S3 Defective indoor controller board Defective outdoor controller circuit board Refer to Self diagnosis action table in order to solve the trouble In the case of communication errors the display of remote controll...

Page 55: ...board are blown Check the wiring of the outdoor unit Check if the wiring is bad Check if the fuses are blown The fuses on the outdoor controller circuit board will be blown when the indoor outdoor connecting wire short circuits Bad wiring of the outdoor controller board The fuses on the outdoor controller circuit board are blown Check if miswiring breaking or poor contact is causing this problem I...

Page 56: ...ntroller circuit board Replace the outdoor controller circuit board Normal Only the unit which has the refrigerant address 0 supplies power to the remote controller Set the refrigerant address to 0 In the case of the multiple grouping system recheck the refrigerant address again Defective indoor power board Replace the indoor power board Defective outdoor power circuit board Replace the outdoor po...

Page 57: ...al block TB5 of the indoor unit Defective remote controller Replace the remote controller Breaking or poor contact of the remote controller wire Check if there is breaking or poor contact of the remote controller wire Check the voltage of the terminal block TB5 connecting the remote controller wire If it is not between 10 and 16 V DC the indoor controller board must be defective The remote control...

Page 58: ...ion of the maintanace menu See the operation manual that came with the product for how to clean the filters Display time of depends on the model Long life filter 2500 h Standard filter 100 h 3 STANDBY is displayed on the screen 3 This is displayed when the unit starts HEAT operation when the thermostat puts the compressor in operation mode or when the outdoor unit ends DEFROST operation and return...

Page 59: ...to water flowing is heard from the unit 5 This is not a malfunction This is the sound when the refrigerant is flowing inside the indoor unit Something is wrong with the blower 1 The fan speed does not match the setting of the remote controller during DRY operation No air comes out sometimes during DRY operation 1 This is not a malfunction During the DRY operation the blower s ON OFF is controlled ...

Page 60: ...ng even though any buttons on the remote controller are not pressed 1 Check if you set ON OFF timer The air conditioner starts operating at the time designated if ON timer has been set before 2 Check if any operations are ordered by distant control system or the central remote controller While Centrally controlled is displayed on the remote controller the air conditioner is under the control of ex...

Page 61: ...t temperature 20 C Solenoid valve coil 4 way valve 21S4 Motor for compressor MC Linear expansion valve LEV A LEV B Normal Abnormal Open or short Abnormal Open or short Refer to 5 2 COMPRESSOR TECHNICAL DATA Disconnect the connector then measure the resistance with a tester Winding temperature 20 C Normal Red White Red Orange Red Yellow Red Blue Abnormal 46 4 Ω Open or short Normal Gray Black Gray ...

Page 62: ...connector VCC 15 VDC Did the fuse blow Is there contact failure Is the voltage normal Check the operation Complete Complete Check the operation of fan Disconnect the FAN motor connector and measure the resistance of connector pins Refer to 10 5 HOW TO CHECK THE PARTS Is the fan motor normal Yes No Replace the outdoor controller circuit board C B Replace the outdoor controller circuit board C B and...

Page 63: ... 2 B constant 4150 3 Rt 17exp 4150 273 t 323 1 1 Thermistor R120 7 465 kΩ 2 B constant 4057 2 Rt 7 465exp 4057 273 t 393 1 1 Medium temperature thermistor Thermistor Heat sink TH8 20 C 250 kΩ 30 C 160 kΩ 40 C 104 kΩ 50 C 70 kΩ 60 C 48 kΩ 70 C 34 kΩ 80 C 24 kΩ 90 C 17 5 kΩ 100 C 13 0 kΩ 110 C 9 8 kΩ High temperature thermistors Thermistor Discharge TH4 Thermistor Comp Surface TH33 0 10 20 30 40 50 ...

Page 64: ... is locked more sound can be heard No sound is heard when the pulse number moves from B to A in case coil is burnt out or motor is locked by open phase Sound can be detected by placing the ear against the screw driv er handle while putting the screw driver to the linear expansion valve LEV M 1 6 ø4 ø4 ø3 ø2 ø1 1 Gray Orange Red Yellow Black 2 3 4 5 Connector LEV A LEV B LEV C 12 V DC Outdoor contr...

Page 65: ...erwise pipes can bend due to stress How to attach the coil Hold the lower part of the main body shown as A firmly so that the main body does not move and attach the coil by inserting it downward into the main body Then securely attach the coil stop per to main body At this time be careful that stress is not added to lead wire and main body is not wound by lead wire If the stopper is not firmly att...

Page 66: ...ing emergency operation the air conditioner will continuously be operated by supplying power and stopping it It can not be turned on or off by remote control and temperature control is not possible 4 Do not perform emergency heating operation for an extended period of time If the outdoor unit starts defrosting during this period cold air will blow out from the indoor unit 5 Do not perform emergenc...

Page 67: ... 30 C 5 C HEAT 20 5 C 45 C 50 C 22 C 5 C 80 C 5 C 7 C 5 30 C 5 C 1 1 1 1 2 2 Remarks 1 If the thermistor temperature data is normal not open short that data is loaded into the control as valid data When the unit enters emergency operation and TH values are mismatched set the thermistors to open short And the unit runs emergency operation with the values listed above 2 If one thermistor is set to o...

Page 68: ...W5 Function switch TH4 Thermistor Discharge TH3 Thermistor Liquid TH7 6 Thermistor Ambient 2 phase pipe VFG Voltage between right pins of PC5C and PC5D pin 3 and pin 4 Same as CNF17 4 VSP Voltage between pins of C5A C5B 0 V DC when stopped 1 6 5 V DC when operated LEV A B Linear expansion valve SWP Pump down SW8 Pipe replace Wiring replace CNM Connect to A control service tool CNMNT Connect to M N...

Page 69: ... LO2 LO2 LO3 LO3 LO1 400 V AC OUTPUT Connect to the outdoor converter circuit board L1 IN ACL2 ACL3 CNCT Primary current Connect to the outdoor power circuit board CN5 CNL Connect to the ACL4 NO Connect to the outdoor converter circuit board N IN ZM200 250Y only E1 Connect to the earth E3 Connect to the earth ZM100 140Y only E2 Connect to the earth 69 OCH771 Outdoor noise filter circuit board PUZ ...

Page 70: ...rcuit board CN2 1 5 Transmitting signal to outdoor controller circuit board 0 5 V DC 2 5 Zero cross signal 0 5 V DC 3 4 18 V DC 6 5 16 V DC 7 5 16 V DC CN4 Connect to the outdoor controller circuit board CN4 Brief Check of POWER MODULE If they are short circuited it means that they are broken Measure the resistance in the following points connectors etc 1 Check of POWER MODULE 1 Check of DIODE cir...

Page 71: ... outdoor noise filter circuit board CNCT CN4 Connect to the outdoor controller circuit board CN4 CN2 Connect to the outdoor controller circuit board CN2 1 5 Power circuit board Transmitting signal to the controller board 0 5 V DC 2 5 Zero cross signal 0 5 V DC 3 4 Not used 6 5 16 V DC 7 5 16 V DC 5 1 2 6 7 CN7 Connect to the outdoor con verter circuit board CN7 TB U TB V TB W Connect to the compre...

Page 72: ... to the outdoor noise filter circuit board CNCT CN4 Connect to the outdoor controller circuit board CN4 CN2 Connect to the outdoor controller circuit board CN2 1 5 Power circuit board Transmitting signal to the controller board 0 5 VDC 2 5 Zero cross signal 0 5 VDC 3 4 Not used 6 5 16 VDC 7 5 16 VDC 5 1 2 6 7 TB U TB V TB W Connect to the compressor MC Voltage among phases 10 400 VAC Diode module ...

Page 73: ...2 ET ER UK L1 A2 L2 A2 L3 A2 Connect to the ACL1 ACL2 ACL3 CN7 Connect to the outdoor power circuit board CN7 CK OU Connect to the CK capacitor L1 IN N IN Connect to the noise filter circuit board LO1 NO L1 A1 Connect to the ACL1 L1 OU L2 OU L3 OU Connect to the outdoor power circuit board TB L1 L2 L3 ...

Page 74: ...om OFF to ON 2 Manual defrost will start by the above operation 1 if all these conditions written below are satisfied Heat mode setting 10 minutes have passed since compressor started operating or previous manual defrost is finished Pipe temperature is less than or equal to 8 C Manual defrost will finish if certain conditions have been satisfied Manual defrost can be done if above conditions have ...

Page 75: ...uto recovery No auto recovery When power supply ON 3 4 5 No function 6 No function SW7 4 1 Mode select 3 Demand function Low noise mode Always 2 No function 3 Max Hz setting cooling Max Hz cooling o 0 8 Normal Always 4 Max Hz setting heating Max Hz heating o 0 8 Normal Always 5 Breaker capacity setting 5 Decrease capacity Normal When power supply ON 6 Defrost setting For high humidity Normal Alway...

Page 76: ...noise mode B On site arrangement C External input adapter PAC SC36NA E X Relay D Outdoor unit control board E Maximum 10 m F Power supply for relay A SW1 Orange 1 3 Brown Red E B F CNDM X X C D A Circuit diagram example Demand function B On site arrangement X Y Relay C External input adapter PAC SC36NA E D Outdoor unit control board E Maximum 10 m F Power supply for relay By performing the followi...

Page 77: ...board 4Re check error by turning off power and on again P 46 Indoor outdoor unit communication error transmitting error is detected by indoor unit E7 P 46 Indoor outdoor unit communication error signal receiving error is detected by outdoor unit P 46 E8 Indoor outdoor unit communication error transmitting error is detected by outdoor unit P 47 E9 3 blinking Remote controller signal receiving error...

Page 78: ...r outdoor units have a short cycle on their air ducts 2Measure resistance value of outdoor thermistor TH8 P 42 7 blinking Abnormality of voltage U9 1Check looseness disconnection and reversed connection of compressor wiring 2Measure resistance value among terminals on compressor using a tester 3Check if power supply voltage decreases 4Check the wiring of CN52C P 43 P 44 4 blinking 1 blinking Abnor...

Page 79: ...played when compressor stops due to the work of protection devices Display Contents to be inspected When power is turned on F5 E8 E9 EA Eb EC E0 E7 63H connector yellow is open TRS connector is open Indoor outdoor communication error Signal receiving error Outdoor unit Indoor outdoor communication error Transmitting error Outdoor unit Miswiring of indoor outdoor unit connecting wire excessive numb...

Page 80: ...or more hundreds digit tens digit and ones digit are displayed by turns Example When 2450 hours 245 10 hours 0 5 s 0 5 s 2 s 1 ON 2 3 4 5 6 1 ON 2 3 4 5 6 1 ON 2 3 4 5 6 Compressor operating current 0 to 50 LEV A opening pulse 0 to 480 0 to 50 Omit the figures after the decimal fractions 0 to 480 When it is 100 pulse or more hundreds digit tens digit and ones digit are displayed by turns Example W...

Page 81: ...it number and code 52 to 221 When the temperature is 100 C or more the hundreds digit tens digit and ones digit are displayed by turns Example When 130 C 0 5 s 0 5 s 2 s C A Code display Code display 0 to 50 When no error history 0 and are displayed by turns When no error history 0 and are displayed by turns 1 ON 2 3 4 5 6 Thermostat ON time 0 to 999 Test run elapsed time 0 to 120 0 to 999 When it...

Page 82: ...Display details 0 H P 1 Cooling only 0 Single phase 2 3 phase Setting details Defrosting switch Display details 0 Normal 1 For high humidity Example When heat pump 3 phase and defrosting normal are set up 20 is displayed 1 ON 2 3 4 5 6 1 ON 2 3 4 5 6 Indoor pipe temperature Cond Eva TH5 1 Indoor 1 39 to 88 39 to 88 When the temperature is 0 C or less and temperature are displayed by turns C 39 to ...

Page 83: ...emperature are displayed by turns When the thermistor detects 100 or more hundreds digit tens digit and ones digit are displayed by turns Outdoor Ambient temperature TH7 60 to 91 60 to 91 When the temperature is 0 C or less and temperature are displayed by turns Normal Overvoltage error Undervoltage error Input current sensor error L1 phase open error Abnormal power synchronous signal PFC IGBT err...

Page 84: ...yed in the case of no postponement Code display Error history 3 Oldest Alternate display of abnormal unit num ber and code When no error history 0 and are displayed by turns 3 Outdoor pipe temperature Liquid TH3 6 Outdoor pipe temperature 2 phase TH6 7 Outdoor ambient temperature TH7 8 Outdoor heat sink TH8 1 ON 2 3 4 5 6 1 ON 2 3 4 5 6 1 ON 2 3 4 5 6 1 ON 2 3 4 5 6 Error thermistor display When t...

Page 85: ...0 to 91 When the temperature is 0 C or less and temperature are displayed by turns Example When 15 C 0 5 s 0 5 s 2 s Outdoor temperature Ambient TH7 on error occurring 60 to 91 60 to 91 When the temperature is 0 C or less and temperature are displayed by turns Example When 15 C 0 5 s 0 5 s 2 s Outdoor temperature Heat sink TH8 on error occurring 40 to 200 40 to 200 When the temperature is 0 C or l...

Page 86: ...itch position 1 ON 2 3 4 5 6 Outdoor temperature Comp Surface TH33 52 to 221 52 to 221 When the comp surface thermistor detects 100 C or more hundreds digit tens digit and ones digit are displayed by turns Example When 105 C 0 5 s 0 5 s 2 s 05 1 C Controlling status of compressor operating frequency 1 ON 2 3 4 5 6 Code display The following code will be a help to know the operating status of unit ...

Page 87: ...the indoor units Initial setting Initial setting Initial setting ta A B 2 ta A B 2 ta A ta A No 2 The data of the sensor on the indoor unit that connected with remote controller ta A ta B ta A ta A No 3 The data of the sensor on main remote controller ta C ta C ta C ta C OUTDOOR INDOOR REMOTE MAIN REMOTE SUB INDOOR OUTDOOR INDOOR REMOTE MAIN REMOTE SUB OUTDOOR INDOOR REMOTE MAIN OUTDOOR INDOOR REM...

Page 88: ...t Intake air temperature Measured by thermostat Indoor unit Intake air temperature Unit No 1 Heat mode 4 deg correction Indoor unit Intake air temperature Unit No 2 Heat mode 4 deg correction Indoor unit Intake air temperature Unit No 3 Heat mode 4 deg correction Indoor unit Intake air temperature Unit No 4 Heat mode 4 deg correction Indoor unit Liquid pipe temperature Unit No 1 Indoor unit Liquid...

Page 89: ...nement history 1 latest Outdoor unit Error postponement history 2 previous Outdoor unit Error postponement history 3 last but one 0 255 0000 Not connected Examples Ver 5 01 Auxiliary information displayed after version information Examples Ver 5 01 A000 Displays postponement code is displayed if no postponement code is present Displays postponement code is displayed if no postponement code is pres...

Page 90: ...last Error history 3 third to last Abnormal thermistor display TH3 TH6 TH7 TH8 Operation mode at time of error Compressor Operating current at time of error Compressor Accumulated operating time at time of error Compressor Number of operation times at time of error Discharge temperature TH4 or comp surface temperature TH33 at time of error Outdoorunit Liquidpipe1temperature TH3 attimeoferror Outdo...

Page 91: ...oninformation Examples Ver 5 01 A000 A000 1 hour 10 hours Ver For indoor fan phase control For indoor fan pulsation control For indoor DC brushless motor control Indoor Fan operating time After filter is reset Indoor Total operating time Fan motor ON time Indoor fan output value Sj value Indoor fan output value Pulsation ON OFF Indoor fan output value duty value Indoor unit Capacity setting inform...

Page 92: ...ode Display Operation mode 0 STOP FAN C COOL DRY H HEAT d DEFROST Relay output state Display Power currently Compressor 4 way valve Solenoid valve supplied to compressor Unit No 4 state Unit No 3 state Unit No 2 state Unit No 1 state Display State 0 Normal 1 Preparing for heat operation 2 3 4 Heater is ON 5 Anti freeze protection is ON 6 Overheat protection is ON 7 RequestingcompressortoturnOFF F ...

Page 93: ...isplay SV1 4 way valve Compressor 0 1 2 3 4 5 6 7 8 9 A b C d E F ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON Actuator output state 2 Display 52C SV2 SS 0 1 2 3 4 5 6 7 ON ON ON ON ON ON ON ON ON ON ON ON Error content U9 Request code 55 Data display Error content 1 Error content 2 0 0 Error content 1 Detected Display Overvoltage Undervoltage L1 ...

Page 94: ...pacity setting display Request code 70 Data display Capacity 10 50 9 35 11 60 14 71 20 100 25 125 28 140 40 200 50 250 Outdoor unit Setting information Request code 71 Data display Setting information 1 Setting information 2 0 0 Setting information 1 Display Defrost mode 0 Standard 1 For high humidity Setting information 2 Display Single Heat pump 3 phase cooling only 0 Single phase Heat pump 1 Co...

Page 95: ...16 11 125 02 22 12 140 03 25 13 160 04 28 14 200 05 32 15 224 06 35 36 16 250 07 40 17 280 08 45 18 09 50 19 0A 56 1A 0b 63 1b 0C 71 1C 0d 80 1d 0E 90 1E 0F 100 1F Display Pair No setting state 00 No 0 01 No 1 J41 disconnected 02 No 2 J42 disconnected 03 No 3 J41 J42disconnected Wireless pair No indoor control board side setting Request code 165 Data display 0 0 See the table on the right ...

Page 96: ...outdoor units by remote controller Furthermore use of maintenance stable operation control that fixes the operating frequency allows smooth inspection even for inverter models Remove the service panel Measure the intake air temperature Measure the discharge temperature Measure the outside air temperature Indoor unit Outdoor unit Smooth Mainte nance Function Conventional inspection work Easy mainte...

Page 97: ... heat exchanger temperature 7 Indoor intake air temperature Cool Classification Item Result Inspection Temperature difference Heat Inspection Temperature difference Stable Unstable Stable Unstable Notes Fixed Hz operation may not be possible under the following tempera ture ranges A In cool mode outdoor intake air temperature is 40 or higher or indoor intake air temperature is 23 or lower B In hea...

Page 98: ...2 Remove the top panel See Photo 1 3 Disconnect the indoor outdoor connecting wire from terminal block 4 Disconnect the connector CNF1 LEV A and LEV B on the controller circuit board Symbols on the board CNF1 Fan motor LEV A LEV B LEV 5 Disconnect the pipe side connections of the following parts Thermistor Liquid TH3 Thermistor Discharge TH4 Thermistor 2 phase pipe Ambient TH7 6 High pressure swit...

Page 99: ... box 4 Loosen the clamp for the lead wire in the rear of the electrical parts box See Photo 5 5 Pull out the thermistor Ambient TH7 from the sensor holder Note When replacing thermistor Ambient TH7 replace it together with thermistor 2 phase pipe TH6 since they are combined together Refer to procedure No 4 above to remove thermistor 2 phase pipe Photo 7 Clamp 6 Removing the thermistor Discharge TH...

Page 100: ... The welded part can be removed easily by remov ing the right side panel Note 3 When installing the 4 way valve cover it with a wet cloth to prevent it from heating 120 C or more then braze the pipes so that the inside of pipes are not oxidized 9 Removing the LEV 1 Remove the service panel See Photo 1 2 Remove the top panel See Photo 1 3 Remove the electrical parts box See Photo 4 4 Remove 3 valve...

Page 101: ...rews 5 12 in the rear of the unit and remove the right side panel 5 Pull out the lead wire of high pressure switch 6 Recover refrigerant 7 Remove the welded part of high pressure switch Note 1 Recover refrigerant without spreading it in the air Note 2 The welded part can be removed easily by removing the right side panel Note 3 When installing the high pressure switch cover it with a wet cloth to ...

Page 102: ...refrigerant without spreading it in the air 13 Removing the power receiver 1 Remove the service panel See Photo 1 2 Remove the top panel See Photo 1 3 Remove 2 front cover panel fixing screws 5 12 and remove the front cover panel See Photo 1 4 Remove 2 back cover panel fixing screws 5 12 and remove the back cover panel 5 Remove the electrical parts box See Photo 4 6 Remove 3 valve bed fixing screw...

Page 103: ...ect the connectors CNF1 WH and CNF2 WH on the controller circuit board in the electrical parts box See Photo 4 or 5 7 Loosen the clamp for the lead wire on motor support and separator 8 Release the lead wire from the hole on separator 9 Remove the fan motor fixing screws 4 for front 5 x 25 to remove the fan motor For the each fan motor on top and under Note1 Tighten the propeller fan with a torque...

Page 104: ...hoto 4 or 5 7 Loosen the lead wires fixed to the pipes with bands 8 Remove the terminal cover to disconnect the COMP lead wire 9 Remove the electrical parts box fixing screws then slide the electrical parts box upward to remove it Note that number of the electrical parts box fixing screw is different on each model V or Y V model 2 for front 4 x 10 Y model 3 for front 4 x 10 The electrical parts bo...

Page 105: ...lead wires from the clamp on the bottom of the electrical parts box See Photo 7 5 Remove the 3 screws screw 4 and 5 that fix the bot tom side of the electrical parts box and remove the bot tom side plate by sliding in the direction of the arrow B See Photo 8 and 9 6 Remove the 2 screws screw 6 and 7 that fix the plate equipped with the noise filter circuit board and converter circuit board See Pho...

Page 106: ...pro cedure No 6 to remove the thermistor Ambient TH7 Photo 12 6 Removing the thermistor Ambient TH7 1 Remove the service panel See Photo 1 2 Remove the top panel See Photo 1 3 Disconnect the connector TH7 6 RD on the controller circuit board in the electrical parts box See Photo 4 or 5 4 Loosen the fastener for the lead wire in the electrical parts box Removing the thermistor Ambient TH7 5 Loosen ...

Page 107: ...osen the fastener for the lead wire on the controller circuit board in the electrical parts box 5 Loosen the clamp for the lead wire on separator 6 Pull out the thermistor Liquid TH3 from thermistor clip 7 Pull out the thermistor Discharge TH4 from thermis tor holder 8 Remove the top damper then pull out the thermistor Comp surface TH33 from thermistor holder Photo 14 Photo 15 Separator Thermistor...

Page 108: ...te with hooks on the rear side See Photo 1 4 Remove the valve bed fixing screws 3 for front 5 x 12 and the ball valve and stop valve fixing screws 4 for front 5 x 16 to remove the valve bed 5 Remove the side panel R fixing screws 3 for rear 5 x 12 then slide the side panel R upward to remove it The side panel R is fixed to the side plate with hooks on the rear side 6 Recover refrigerant Removing t...

Page 109: ...e 2 The compressor can be easily removed by remov ing separator Note 3 When replacing the compressor ensure that the surrounding parts are completely cold after braz ing then fix the accessory damper with a locally procured band Ensure to maintain at least 10 mm distance from the surrounding piping Photo 17 11 Removing the power receiver 1 Remove the electrical parts box See photo 4 or 5 2 Remove ...

Page 110: ... reactor ACL Y model only 1 Remove the service panel See Photo 1 2 Loosen the clamp for the lead wire on separator 3 Disconnect the lead wires from the reactor ACL 4 Remove the reactor box fixing screws 4 for right side 4x10 to remove the reactor box 5 Remove 4 screws for reactor in the reactor box to remove the reactor Note 1 Pay extra attention when handling the reactor since it is very heavy 4 ...

Page 111: ...nd under 3 Remove the screw of nut 1 for front M6 then slide the propeller fan forward to remove it For the each fan motor on top and under 4 Disconnect the connectors CNF1 WH and CNF2 WH on the controller circuit board in the electrical parts box See Photo 4 5 Loosen the clamp for the lead wire on motor support and separator 6 Release the lead wire from the hole on separator 7 Remove the fan moto...

Page 112: ... LEV B 6 Loosen the clamps fasteners and cable strap for the lead wire in the electrical parts box and separator See photo 4 7 Loosen the lead wires fixed to the pipes with bands 8 To disconnect the COMP lead wire remove the terminal cover then remove the COMP lead wire fixing screws 3 for front 5 x 12 9 Remove the electrical parts box fixing screw 2 for front 4 x 10 then slide the electrical part...

Page 113: ...parts box must be separated from the outdoor unit Note When reassembling the electrical parts box make sure the wirings are correct Photo 5 Photo 6 Photo 7 Photo 8 Photo 9 5 Removing the thermistor 2 Phase Pipe TH6 1 Remove the service panel See Photo 1 2 Remove the top panel See Photo 1 3 Disconnect the connector TH7 6 RD on the controller circuit board in the electrical parts box See Photo 4 4 L...

Page 114: ... protector TRS 1 Remove the service panel See Photo 1 2 Disconnect the connector TH3 WH TH4 WH and TH33 YE on the controller circuit board in the electrical parts box See Photo 4 3 Loosen the fastener cable strap and band for the lead wire on the controller circuit board in the electrical parts box 4 Loosen the clamp for the lead wire on separator 5 Pull out the thermistor Liquid TH3 from thermist...

Page 115: ...e the valve bed See Photo 14 5 Remove the side panel R 6 Recover refrigerant Removing the 4 way valve 7 Remove the 4 way valve coil See photo 13 8 Remove the welded part of 4 way valve 4 positions to remove the 4 way valve Removing the LEV 7 Remove the LEV coil See photo 13 8 Remove the welded part of LEV 2 positions to remove the LEV Removing the high pressure switch 7 Disconnect the lead wire fr...

Page 116: ...essor Note 1 Recover refrigerant without spreading it in the air Note 2 The compressor can be easily removed by removing separator Photo 14 11 Removing the power receiver 1 Remove the electrical parts box See photo 4 2 Remove the cover panel front See Photo 1 3 Remove the cover panel rear See Photo 1 4 Remove the ball valve fixing screws 2 for front 5x16 See Photo14 5 Remove the stop valve fixing ...

Page 117: ...tion except for the ON OFF button 6 ON OFF lamp This lamp lights up in green while the unit is in operation It blinks while the remote controller is starting up or when there is an error 7 Function button F1 Main display Press to change the operation mode Menu screen The button function varies with the screen 8 Function button F2 Main display Press to decrease temperature Main menu Press to move t...

Page 118: ...ool Set temp Auto Basic mode Fri Cool Mode Temp Fan Set temp Auto 2 1 5 6 7 8 9 0 1 3 9 4 2 3 4 5 6 7 2 1 5 Display 4 3 8 4 Appears when the Weekly timer is enabled 5 Appears while the units are operated in the energy saving mode Will not appear on some models of indoor units 6 Appears while the outdoor units are operated in the silent mode 7 Appears when the built in thermistor on the remote cont...

Page 119: ... ON OFF timer Auto return Clock Main Sub Temp range Auto OFF timer Schedule Daylight saving time Clock Administrator password Operation locked 3D i See sensor High power Vane Louver Vent Lossnay Comfort Timer Energy saving Basic setting Display setting Operation setting Restriction Weekly timer OU silent mode Timer menu Main display Display details Contrast Brightness Language selection Auto mode ...

Page 120: ...unction setting Maintenance password Dealer information input Error information Test run menu Maintenance information Filter information Cleaning Settings menu Check menu Other menu Auto descending panel Descending operation Self check Descending adjustment Remote controller check Continue from the previous page Not all functions are available on all models of indoor units Error history menu Error...

Page 121: ...tdoor units over temperature control Set the Start Stop times for each day of the week Select the desired silent level from Normal Middle and Quiet Night setback 1 Use to make Night setback settings Select Yes to enable the setting and No to disable the setting The temperature range and the start stop times can be set Energy saving Restriction Temp range 2 Use to restrict the preset temperature ra...

Page 122: ...layed The model name manufacturing number and contact information need to be registered in advance to be displayed Filter information Use to check the filter status The filter sign can be reset Cleaning Auto descending panel Use to lift and lower the auto descending panel Optional parts Service Test run Select Test run from the Service menu to bring up the Test run menu Test run Drain pump test ru...

Page 123: ...signal transmitted from the remote controller has been received Signals can be received up to approximately 7 meters in a direct line from the indoor unit in an area 45 to the left and right of the unit However illumination such as fluorescent lights and strong light can affect the ability of the indoor unit to receive signals If the operation lamp near the receiver on the indoor unit is blinking ...

Page 124: ...ting Auto Set Temperature buttons Weekly timer ON OFF button Set Time button Sets the time Airflow button Changes up down airflow direction Mode button Changes operation mode Timer ON button Timer OFF button OFF ON button Fan Speed button Changes fan speed SET SEND button CANCEL button Up Down buttons Menu button i see button Reset button Remote controller display Transmission area 3D i See sensor...

Page 125: ...me of occur rence model name and serial number will appear The model name and serial number will appear only if the informa tion have been registered Press the F1 or F2 button to go to the next page When an error occurs the following screen will appear Check the error status stop the operation and consult your dealer Contact information dealer s phone number will appear if the information has been...

Page 126: ...formation Filter information Cleaning While no errors are occurring page 2 2 of the error information can be viewed by selecting Error information from the Maintenance menu Errors cannot be reset from this screen Checking the error information F1 F2 F3 F4 ...

Page 127: ...ntenance password is required 3 If the password matches the Service menu will appear The type of menu that appears depends on the connected indoor units type A screen will appear that indicates the setting has been saved Navigating through the screens To go back to the Service menu button To return to the previous screen button Note The initial maintenance password is 9999 Change the default pass ...

Page 128: ...utton to go through the operation modes in the order of Cool and Heat Check the auto vane with the F1 F2 buttons Press the button to return to Test run operation Press the button When the test run is completed the Test run menu screen will appear The test run will automatically stop after 2 hours The function is available only for the model with vanes Test run operation Auto vane check Press the b...

Page 129: ... from the unit 6 Press the VANE button and check whether the auto vane operates properly 7 Press the ON OFF button to stop the test run Note Point the remote controller towards the indoor unit receiver while following steps 2 to 7 It is not possible to run in FAN DRY or AUTO mode 1 A B 2 3 15 4 3 PAR SL100A E 1 Press the button 1 to stop the air conditioner If the weekly timer is enabled is on pre...

Page 130: ...it is common or when running all units all indoor units for the selected refrigerant address will start fan operation Function setting Ref address Sending data 5 When the settings are completed press the button to send the setting data from the remote controller to the indoor units When the transmission is successfully completed the screen will return to the Function setting screen Note Make the a...

Page 131: ...s remote controller toward the receiver of the indoor unit and press the h button 3 Set the unit number Press the TEMP button to set the unit number Press 01 to specify the indoor unit whose unit number is 01 Direct the wireless remote controller toward the receiver of the indoor unit and press the min button Notes 1 If a unit number that cannot be recognized by the unit is entered 3 beeps of 0 4 ...

Page 132: ...de number B Fig 3 Direct the wireless remote controller toward the receiver of the indoor unit and press the button Current setting number 1 1 beep 1 second 2 2 beep 1 second each 3 3 beep 1 second each 4 Selecting the setting number Use the button to change the Setting number C Fig 4 Direct the wireless remote controller toward the receiver of the indoor unit and press the button 5 To select mult...

Page 133: ... F1 or F2 button and press the button 3 16 error history records will appear 4 records are shown per page and the top record on the first page indicates the latest error record To delete the error history press the F4 button Delete on the screen that shows error history A confirmation screen will appear asking if you want to delete the error history Press the F4 button OK to delete the history Err...

Page 134: ...4 button Delete on the screen that shows preliminary error history A confirmation screen will appear asking if you want to delete the preliminary error history Press the F4 button OK to delete the preliminary error history Preliminary error history deleted will appear on the screen Press the button to go back to the Error history menu Preliminary error history Page Delete Error history menu Error ...

Page 135: ...ute will appear will appear if no error history is available 4 Resetting the error history Press the F4 button Reset on the screen that shows the error history A confirmation screen will appear asking if you want to delete the error history Press the F4 button OK to delete the error history If deletion fails Request rejected will appear Unit not exist will appear if no indoor units that are corres...

Page 136: ...ddress B indoor unit and the number of blinks of the OPERATION INDICATOR lamp check is completed f 15 7 3 PAR SL100A E Procedure 1 Press the CHECK button twice CHECK lights and refrigerant address 00 blinks Check that the remote controller s display has stopped before continuing 2 Press the TEMP buttons Select the refrigerant address of the indoor unit for the self diagnosis Note Set refrigerant a...

Page 137: ...32 There is noise on the transmission line or the indoor unit or another remote controller is faulty Check the transmission line and the other remote controllers NG ALL0 ALL1 Send receive circuit fault The remote controller needs replacing ERC The number of data errors is the discrepancy between the number of bits in the data transmitted from the remote controller and that of the data that was act...

Page 138: ... the button Fixed operation will start Note Stable mode will take approx 20 minutes F1 F2 F3 F4 Check menu Cursor Service menu Error history Diagnosis Smooth maintenance Request code Smooth maintenance Return Smooth maintenance Return Smooth maintenance Return Page Page Page COMP current COMP run time COMP On Off COMP frequency A Hz Hr times Hr Ref address Cool Ref address Cool Ref address Cool Su...

Page 139: ... 01 Outdoor unit Indoor unit 01 Outdoor unit Indoor unit 01 Remote controller Details on the operation data including each thermistor temperature and error history can be confirmed with the remote controller Select Request code with the F1 or F2 button and press the button Select Check with the F1 or F2 button and press the button 2 Set the Refrigerant address and Request code Select the item to b...

Page 140: ...ICE TOKYO BUILDING 2 7 3 MARUNOUCHI CHIYODA KU TOKYO 100 8310 JAPAN CCopyright 2021 MITSUBISHI ELECTRIC CORPORATION Published Sep 2021 No OCH771 Made in Japan Specifications are subject to change without notice ...

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Mitsubishi Electric PUZ-ZM60VHA2, Service Manual

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