Mitsubishi Heavy Industries FDCR224KXE6 Technical Manual Download Page 105

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103

'11 • KX-T-166

Error code

Remote controller:
7-segment display:

LED

Green

Red

Indoor

Outdoor

Content

WAIT

(3)

Keeps flashing Stays Off

Keeps flashing Keeps flashing

1.Applicable model

5.Troubleshooting

All models

(No display on the remote

controller after power ON)

Diagnosis

Countermeasure

YES

No display on the remote

controller after power ON

Does

indoor green LED keep

flashing?

Does

outdoor red LED flash

2-times?

the connecting wires

between indoor and outdoor

units comnnected

properly?

AC380-415V detected

between L1-L2, L2-L3,

L3-L1 respectively at outdoor

terminal block?

AC220-240V detected

between L-N at indoor

teminal block?

The fuse on indoor control

PCB OK?

AC18V or higher is

detected between Red-

Red at secondary side of

indoor transformer? (1)

DC10-11V between

X-Y at indoor control PCB

side when removing

remote controller ?

Note (1) except FDT

and FDTC

Fuse blown



Replace fuse

Transformer anomaly

Remote controller wire

short-circuited

Remote controller anomaly

Indoor control PCB

anomaly

Remote controller anomaly

Brakage of connecting

wires of remote controller

Correct the connecting

wires properly

Outdoor control PCB

anomaly



Replace it

Breakage of connecting

wire Noise

Indoor control PCB

anomaly



Replace it

2.Error detection method

3. Condition of error displayed

4.Presumable cause

• Fuse blown

• Noise filter anomaly

• Anomalous connection of

wire between PCBs

• Indoor control PCB anomaly

• Remote controller anomaly

• Breakage of connecting wires

of remote controller

• Outdoor control PCB anomaly

Note:

Summary of Contents for FDCR224KXE6

Page 1: ...e manual No 10 KX DB 144 Regarding the Duct Connected High static Pressure type Outdoor Air Processing Unit Series FDU500 1800FKXE6 refer to the DATA BOOK No 08 KX DB 122 Note updated November 27 2014 Service code FDCR224KXE6 FDCR280KXE6 1 L Exterior dimensions are changed to comply with amended safety standard for LVD EN60335 1 2012 Changes History of service code Model L L 1 1 Page 1 Exterior di...

Page 2: ...of outdoor unit 22 6 3 Method for connecting the accessory pipe 38 6 4 Installation work check sheet For heat pump unit 39 6 5 Check operation procedure 41 6 6 Instructions for installing the branch pipe set option 49 6 7 Service valve kit installation manual 53 6 8 Pipe washing check sheet 55 6 9 Instruction manual piping re fresh kit 56 7 OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER 58 7 1 Oper...

Page 3: ...ooling capacity 22 4kW Model name Outdoor unit Note This unit complies with EN61000 3 3 For outdoor unit EN61000 3 2 is not applicable as consent by the utility company or notification to the utility company is given before usage 1 3 Branch pipe set and Header pipe set Total capacity downstream Less than 180 180 or more but less than 371 Branching pipe set DIS 22 1G DIS 180 1G Total capacity downs...

Page 4: ...table capacity 50 130 50 130 Static Pressure Pa 1675 1080 480 Direct line start 33 Straight ﬁn inner grooved tubing Electronic expansion valve R410A 11 5 1 7 M MA32R MC controlled De Icer Propeller fan 2 144 2 Direct line start 200 Rubber mount for compressor Liquid Flare Gas Brazing Hole for drain φ20 4 Necessary both Liquid Gas lines stucco white 4 2 Y 7 5 1 1 near equivalent Max 35 380 415V 3N ...

Page 5: ...irection that the blower outlet faces perpendicularly to the dominant wind direction 4 Leave 1m or more space above the unit 5 A wall in front of the blower outlet must not exceed the units height 6 The model name label is attached on the lower right corner of the front 7 Connect the Service valve with local pipe by using the pipe of the attachment Gas side only 8 Mark shows the connecting posotio...

Page 6: ...he outdoor units which can use this kit refer to the technical data 2 The Service valve kit cannot be installed upside down Install the kit at level 3 Use new pipes to connect between the Service valve kit and the outdoor unit It is prohibited to use existing pipes Restrict the actual pipe lenght no longer than 3m 4 Secure the service spaces shown in the ﬁgure below 1350 500 FDCR V KIT E Model Wei...

Page 7: ... 189 602 404 47 201 126 151 158 25 125 Check joint L Accumulator Strainer Check valve Check joint R Bypass gas pipe service valve Flange Oil drain hole Flange Oil drain hole Bypass gas pipe service valve Accessory Flexible tube x 2pcs Flange ﬁxing bolt x 8pcs Gasket x 4pcs ...

Page 8: ...elligent power module J11 12 Power supply voltage switching J13 External input switching level pulse J14 Spare J15 Defrosting start temperature selection normal cold region LED1 Inspection Red LED1 INV Normal Yellow Flashing LED2 Normal Green LED3 Service Green L1 L3 DC reactor PSH High pressure sensor PSL Low pressure sensor PWB1 3 PCB R1 Rush current suppression resistor SV1 Solenoid valve ﬂuid ...

Page 9: ...00 2000 4000 8000 30 40 50 60 70 80 30 40 50 60 70 80 N40 N50 N30 N60 N70 N80 63 125 250 500 1000 2000 4000 8000 30 40 50 60 70 80 30 40 50 60 70 80 Souud Pressure Level dB standard 2 10 5 Pa Mid Octave Band Frequency Hz Souud Pressure Level dB standard 2 10 5 Pa Mid Octave Band Frequency Hz Souud Pressure Level dB standard 2 10 5 Pa Mid Octave Band Frequency Hz Souud Pressure Level dB standard 2 ...

Page 10: ... Indoor intake air temperature Upper lower limits Outdoor air temperature Upper lower limits Single direction piping length Actual length 160m or less Eguivalent length 185m or less Total piping length Main pipe length 510m or less 130m or less 90m or less However difference between the longest and shortest piping 40m or less 6 min or more 3 minutes or more from start to stop or 3 minutes or more ...

Page 11: ... where can prevent strong wind from directly blowing into the outdoor unit prepare a windbreak fence or something like that locally in order to divert the strong wind from the outdoor unit Reason Under the low outdoor air temperature conditions of 5 or lower if strong wind directly blow into the outdoor unit the outdoor heat exchanger temperature will drop even though the outdoor fan is stopped by...

Page 12: ...oor unit Calculate the temperature compensation then calculate the indoor unit capacity See item 2 a for the calculation method Calculate temperature compensation and piping compensation etc then calculate the outdoor unit capacity See item 2 b for the calculation method Select the outdoor unit tentative Calculate the system capacity See item 2 c for the calculation method Calculate the indoor uni...

Page 13: ... higher c Calculating system capacity Compare the capacities determined in items a and b above and let the smaller value be the system capacity cooling heating In cases where indoor unit total capacity cooling heating outdoor unit capacity cooling heating System capacity cooling heating Outdoor unit capacity cooling heating In cases where indoor unit total capacity cooling heating outdoor unit cap...

Page 14: ... coefficient according to temperature conditions 0 95 Calculated according to Indoor 18 C WB Outdoor 35 C DB See page 13 Outdoor unit cooling capacity 22 4 kW 0 95 21 3 kW Capacity compensation coefficient according to piping length 0 92 calculated according to 60 m length See page 15 21 3 kW 0 92 19 6 kW Capacity compensation coefficient according to height difference 1 0 the outdoor unit is high...

Page 15: ...ity Indoor unit total heating capacity 33 0 kW Outdoor unit maximum heating capacity 24 5 kW e System heating capacity 24 5 kW Indoor unit heating capacity compensation Item 2 d calculation 24 5 kW 6 6 kW 4 9 kW 33 0 kW 3 Capacity compensation coefficient a Capacity compensation coefficient and power consumption compensation coefficient according to in door and outdoor temperature conditions 1 Cap...

Page 16: ... B temperature 15 CWB Indoor air W B temperature 16 CWB Indoor air W B temperature 17 CWB Indoor air W B temperature 18 CWB Indoor air W B temperature 19 CWB Indoor air W B temperature 20 CWB Indoor air W B temperature 21 CWB Indoor air W B temperature 22 CWB Indoor air W B temperature 24 CWB Indoor air W B temperature 26 CWB Power consumption compensation coefficient 0 2 4 6 8 10 12 14 16 18 20 2...

Page 17: ...one way length of refrigerant piping Note This table is for reference only If the refrigerant piping one way equivalent after the ﬁrst branch is extended longer than 40 m it could drop further by about 10 in the worst case 1 Cooling Liquid line φ9 52 Gas line φ19 05 Liquid line φ12 7 Gas line φ22 22 Liquid line φ12 7 Gas line φ25 4 0 0 80 0 85 0 90 0 95 1 00 20 40 60 80 90100 120 140 160 180 Model...

Page 18: ... unit Capacity compensation coefficient Total capacity of concurrently operating indoor unit Cooling Capacity compensation coefficient Heating f The capacity compensation coefficient and power consumption compensation coefficient vary according to the total capacity of concurrently operating indoor units as shown below Model FDCA140HKXEN4A 140HKXES4A 0 20 40 60 80 100 120 0 0 2 0 4 0 6 0 8 1 0 1 2...

Page 19: ...QPVTQN 5WRGT JGCV EQPVTQN 6JK 4 QT UWRGT JGCV EQPVTQN QH EQQNKPI QRGTCVKQP 6JQ QT EQPVTQN QH FKUEJCTIG RKRG VGORGTCVWTG 6JQ QT EQPVTQN QH VGORGTCVWTG WPFGT VJG FQOG 6JQ 5 QT EQPVTQN QH UWEVKQP RKRG VGORGTCVWTG 6JQ 4 4 QT EQPVTQN QH FGHTQUVKPI 6JQ QT EQPVTQN QH FGHTQUVKPI 6JQ 5 NGEVTQPKE GZRCPUKQP XCNXG 85 EQPVTQN QH EQQNKPI QRGTCVKQP 6JQ QT UWRGT JGCV EQPVTQN QH UWD EQQNKPI EQKN 㪪㫌㪹㪄㪺㫆㫆㫃㫀㫅㪾㩷㪺㫆㫀㫃㪜...

Page 20: ...㪸㫇㫀㫃㫃㪸㫉㫐㫋㫌㪹㪼㪤㫌㪽㪽㫃㪼㫉 6JK 4 4 GCVKPI QRGTCVKQP PFQQT HCP EQPVTQN QQNKPI QRGTCVKQP TQUV RTGXGPVKQP EQPVTQN 5WRGT JGCV EQPVTQN 6JK 4 QT UWRGT JGCV EQPVTQN QH EQQNKPI QRGTCVKQP 6JQ QT EQPVTQN QH FKUEJCTIG RKRG VGORGTCVWTG 6JQ QT EQPVTQN QH VGORGTCVWTG WPFGT VJG FQOG 6JQ 5 QT EQPVTQN QH UWEVKQP RKRG VGORGTCVWTG 6JQ 4 4 QT EQPVTQN QH FGHTQUVKPI 6JQ QT EQPVTQN QH FGHTQUVKPI 6JQ 5 NGEVTQPKE GZRCPUKQP XCN...

Page 21: ...d removal of existing outdoor unit indoor unit remote controller etc Installation of outdoor unit in door unit remote controller etc and electrical work Installation of service valve kit is necessary Airtight test of pipes Installation of outdoor unit indoor unit remote controller etc and elec trical work Installation of service valve kit is not necessary Recovery of old refrigerant and re moval o...

Page 22: ...sting pipes for reuse and difference of elevation between units within the ranges of our specifica tion Check pipe support hardware for loose ness Is there any branch pipe which is not connected to indoor unit Check the insulator on existing pipes to be reused for peeling or deterioration Both gas and liquid pipes need insula tion Consult us to confirm if they can be used or not Remove the branch ...

Page 23: ... existing wires and power supply equipment can be utilized basically Confirmation of conductivity of existing wires Check existing wires for conductivity and voltage and the circuit breaker for proper operation If any anomaly is detected replace wires or parts and put them in appropriate condition Confirmation of compatibility of power supply equipment Since the circuit breaker capacity or other m...

Page 24: ...l rooms take prevention measures not to exceed the density limit of refrigerant in the event of leakage accordance with ISO5149 Consult the expert about prevention measures If the density of refrigerant exceeds the limit in the event of leakage lack of oxygen can occur which can cause serious accidents Ventilate the working area well in the event of refrigerant leakage during installation If the r...

Page 25: ...ribution parts which are not contained in the package will be required for installation As for refrigerant pipe distribution parts we offer branching pipe sets Model type DIS and header sets Model type HEAD as parts used on the indoor side of piping Please select one suiting your application In selecting distribution parts please also refer to 4 REFRIGERANT PIPING If you are not sure which parts t...

Page 26: ...election This product uses R410A Since in case of pipes in the size of ø25 4 or more materials of O lacks sufficient capacity to withstand pressure make sure to use pipes of 1 2H material and thickness larger than the minimum thickness When a pipe is branched make sure to use our branching set or header set When setting branching pipes take care of the mounting direction and consult carefully with...

Page 27: ...t be used when the pipe length exceeds 90 m 2 It cannot be used when the main pipe length exceeds 80 m 3 It can be used when the capacity of indoor unit connected with φ φ 15 9 Gas pipe size is 44 or less and difference of height between the indoor units is within 10m It can be used when the capacity of indoor unit connected with φ12 7 Gas pipe size is 35 or less and difference of height between t...

Page 28: ... pipe bend it to the largest possible radius at least four times the pipe diameter Do not bend a pipe repeatedly to correct its form An outdoor unit s pipe and refrigerant piping are to be flare connected Flare a pipe after engaging a flare nut onto it A flare size for R410A is different from that for conventional R407C Although we recommend the use of flaring tools developed specifically for R410...

Page 29: ...nducting a test keep the service valve shut all the time Since refrigerant piping is pressurized to the design pressure of a unit with nitrogen gas for testing air tightness please connect instruments according the drawing below Under no circumstances should chlorine based refrigerant oxygen or any other combustible gas be used to pressurize a system Keep the service valve shut all the time Do not...

Page 30: ...igerant may change when introducing R410A into the cylinder Make sure to charge the refrigerant in the state of ﬂuid Completion of air tightness test Start of air purge Completion of air purge Degree of vacuum check Refrigerant charge Additional charge quantity kg 2 5 L3 0 17 L4 0 11 L5 0 054 L6 0 022 Request Record the refrigerant quantity calculated based on the piping length in the refrigerant ...

Page 31: ...h the local codes and regulations The isolator should be locked in OFF state in accordance with EN60204 1 n After maintenance all wiring wiring ties and the like should be returned to their original state and wiring route and the necessary clearance from all metal parts should be secured CAUTION If the earth leakage breaker is exclusively for ground fault protection then you will need to install a...

Page 32: ...ding wire Up to 1 500 m for 0 75 mm2 shielding wire MVVS Up to 1 000 m for 1 25 mm2 shielding wire MVVS Up to 1000m Units supporting new SL FD KXE6 series Conventional communication protocol previous SL Communication protocol New communication protocol new SL Note For FDT224 and 280 models calculate the number of units taking 1 indoor unit as 2 units for the sake of communication Network connector...

Page 33: ...r unit Indoor unit Indoor unit Indoor unit Indoor unit Indoor unit Outdoor unit Outdoor unit Outdoor unit Indoor unit Indoor unit Indoor unit Indoor unit Indoor unit Indoor unit A2 B2 A1 B1 A2 B2 A1 B1 A1 B1 A2 B2 CASE 2 Address setting methods The following address setting methods can be used The procedure for automatic address setting is different from the conventional one Please use the automat...

Page 34: ...d the 7 segment display panel indication will switch to AUX and start flickering STEP3 Automatic address setting completion check Indoor unit address determination When the indoor unit addresses are all set the 7 segment display panel indication will switch to AUE and start flickering If an error is detected in this process the display will show A Check the 7 segment display panel of each outdoor ...

Page 35: ...dress assigned with the Automatic Address Setting function from a remote control unit Accordingly the conditions that permit an address change from a remote control unit are as follows If CHANGE ADD is selected with some addresses falling outside these conditions the following indication will appear for 3 seconds on the remote controller INVALID OPER Automatic address setting for multiple refriger...

Page 36: ...ettings Before you complete the present address setting session press the ON OFF switch Then the display is change to exit from this mode and switch the display to the normal state All address settings changed in the session will be aborted and not reflected I U 002 2sec lighting SET O U ADD 1sec O U 01 Blink O U 00 O U 01 O U 02 O U 31 I U 002 O U 02 2sec lighting SELECT 1sec lighting I U SELECTI...

Page 37: ... of indoor outdoor units Incorrect adderess setting of indoor units Address setting for plural remote controllers Incorrect setting Duplicating outdoor unit address Incorrect manual address setting Indoor unit address is set from plural remote controllers Plural outdoor units are exist as same address in same network Automatic address setting and manual address setting are mixed Automatic address ...

Page 38: ...ctive even if no signals are input at external input terminals 1 Valid invalid is changed depending on outdoor temperature 2 It is always Valid regardless of outdoor temperature Controls of outdoor unit may be selected as follows using the dip switches on the PCB and P on the 7 segment To change P on the 7 segment hold down SW8 7 segement display increment up 1 digit SW9 7 segment increment up 10 ...

Page 39: ...o chosen with the indication selector switch For the details of indication please refer to the technical manual 6 Internal wiring After maintenance all wiring wiring ties and the like should be returned to their original state and wiring route and the necessary clearance from all metal parts should be secured 2 Method of starting a test run for a cooling operation from an outdoor unit please opera...

Page 40: ...ure to braze while supplying nitrogen gas About brazing Name Accessory pipe Heat insulating material Band Straight pipe 1 Straight pipe 2 Elbow A Downward B Forward C Rightward D Backward No 1 2 3 4 5 6 Quantity 1 1 2 1 1 or 0 1 or 0 Remark Accessory Accessory Accessory Procured at the ﬁeld Procuredattheﬁeld Notrequiredfordownwarddirection Procuredattheﬁeld Notrequiredfordownwarddirection Straight...

Page 41: ... 39 11 KX T 166 6 4 Installation work check sheet For heat pump unit ...

Page 42: ... 40 11 KX T 166 Pressure 4 15MPa in case of FDCR 3 24MPa No fluctuation of pressure for 24 hours Refer to the technical manual about the pressure fluctuation caused from temperature ...

Page 43: ...layed on the 7 segment display of master outdoor unit If the unit has been operating before check operation wait for 5 minutes after stopping the unit operation before starting check operation in order to avoid misjudgment In combination use judging operation valves opened or closed by check operation can be done as no good NG when all of operation valves in liquid line gas line and oil equalizing...

Page 44: ... method refer to 3 Confirmation before check operation 2 For details of check operation refer to 4 Check operation procedure 3 For measures to be taken in case of NG refer to 5 Measures to be taken after check operation Preliminary check Note 1 Judgment of checked result Note 3 End NG OK Auto checking Note 2 Start ...

Page 45: ...thod is of new SL Check the model name of outdoor unit indoor units central control device etc System is not in error stop condition Check to see if any error code E is displayed on indoor or outdoor unit 6 Outdoor unit operation valve Outdoor unit operation valve is opened 1 Check visually 7 Refrigerant amount Proper amount of refrigerant is charged Check the additional charged amount of refriger...

Page 46: ...s judged normal End the check operation CHL Operation valve may be closed Refer to 5 Measures to be taken after check operation CHU Anomalous indoor unit No Refrigerant piping or signal wiring between indoor and outdoor units may not be connected correctly CHJ Anomalous indoor unit No Indoor expansion valve may not be operating properly CHE Check operation has not ended properly All judgment resul...

Page 47: ...r may be anomalous or disconnected 2 See page 47 Operation valve on outdoor unit may be left closed Check it especially when many indoor units No are displayed in data display column of CHU it may be displayed by influence of liquid flooding due to the trouble on any other indoor unit If CHJ is displayed at the same time check preferentially the indoor unit displaying CHJ and after repairing perfo...

Page 48: ...n place Refer to the technical manual or the above It might have been started operation while bottom of compressor was still cold Perform check operation again after the bottom of compressor has been enough warm E 49 Low pressure anomaly Refrigerant circuit may be choked at a certain place Refer to the technical manual or the above E 36 3 Liquid flooding anomaly It may be in the same condition as ...

Page 49: ...unit 3 Indoor unit 4 2 If the connector comes off by a weak pull it s no good If not come off It s OK The connector of indoor heat exchanger temperature thermistor Normal Disconnected 3 If the connector comes off by a weak pull it s no good If not come off It s OK The connector of indoor expansion valve coil Normal Disconnected 4 The indoor expansion valve coil itself Normal Disconnected from main...

Page 50: ...57 FD 18 FD 58 FD 19 FD 59 FD 20 FD 60 FD 21 FD 61 FD 22 FD 62 FD 23 FD 63 FD 24 FD 64 FD 25 FD 65 FD 26 FD 66 FD 27 FD 67 FD 28 FD 68 FD 29 FD 69 FD 30 FD 70 FD 31 FD 71 FD 32 FD 72 FD 33 FD 73 FD 34 FD 74 FD 35 FD 75 FD 36 FD 76 FD 37 FD 77 FD 38 FD 78 FD 39 FD 79 FD 40 FD 80 FD Date of installation d m y Name of installer Superlink version Superlink II Superlink I In case of Superlink I the che...

Page 51: ... 49 11 KX T 166 PSB012D855B a 6 6 Instructions for installing the branch pipe set option G G G G ...

Page 52: ... 50 11 KX T 166 ...

Page 53: ... 51 11 KX T 166 G G G G ...

Page 54: ...6 G 22 22 22 22 36 36 36 36 36 22 22 22 22 88 36 36 36 36 144 HEAD4 22 1G HEAD4 22 1G DIS 180 1G DIS 180 1G DIS 180 1G DIS 22 1G 22 22 22 22 22 36 36 36 36 36 36 326 22 22 22 22 36 36 36 36 36 36 304 36 36 36 36 36 36 216 36 36 36 36 36 180 ...

Page 55: ...sonal injure from a fall of the article Do not step onto the kit You may incur injury from a drop or fall Installation must be carried out by the qualified installer If you install the system by yourself it may cause serious trouble such as water leaks electric shocks fire and personal injury as a result of a system malfunction Install the system in full accordance with the instruction manual Inco...

Page 56: ...as or lower than the outdoor unit ٤Connect the service valve kit and the outdoor unit with actual pipe length no longer than 3 m ٤Install it on the main pipe between the outdoor unit and the initial branch See following figure ٤Close the panel after connecting pipes During the washing operation open the cover to control the service valves ٤On the gas pipes of the service valve kit the marking To o...

Page 57: ...ture on the Outdoor air temperature in the following table It will not be washed properly if it is out of the range of use Indoor 10 35 C outdoor 5 35 C Size of oil drain hole is ø15 88 The plate must be attached to the flange of re fresh kit Raise the pressure gradually Confirm that oil has been drained before going to next step Bolt tightening torque is 25 30 N m Width across flat on the bolt is...

Page 58: ... any other conditions apply comply with the Confirmation and caution items for reuse of existing pipes given in the technical data or catalog When existing units are in trouble and do not operate Environment conditions for operation of the unit Reusable branch pipe Accessory CAUTION When pressurizing the inside of pipe re fresh kit take care to restrict the pressure no higher than 3 24 MPa CAUTION...

Page 59: ... WBMWF 2 MPTF UIF CZQBTT HBT QJQF TFSWJDF WBMWF BU PVUEPPS VOJU 3 MPTF UIF TFSWJDF WBMWF 4 0QFO UIF TFSWJDF WBMWF 65 0 t 6TF B HBTLFU XIFO JOTUBMMJOH UIF nBOHF QMBUF t PMU UJHIUFOJOH UPSRVF JT o N G UJHIUFOFE CFZPOE UIJT SBOHF JU DPVME DBVTF HBT MFBLBHF 5FTU SVO J BLF TVSF UP DIFDL PS JNQMFNFOU UIF GPMMPXJOHT CFGPSF TUBSUJOH UFTU SVO 1 T UIF QJQF XBTIJOH PQFSBUJPO TXJUDI 48 UVSOFE PGG 2 4FSWJDF WB...

Page 60: ...c expansion valve EEVSC OpeningAngle Control Fully closed Fully closed Fully closed Fully closed Fully closed Solenoid valve SV6 oil return 〇〇〇 Solenoid valve SV1 ﬂuid return 〇〇〇〇〇 Solenoid valve SV11 gas bypass 〇 Solenoid valve SV12 gas bypass Crankcase heater CH1 〇〇〇〇〇〇〇 Note 1 It means 〇 ON OFF 〇〇 ON or OFF 2 This shows the state of output when all indoor units are under the same m...

Page 61: ...ompressor iii End conditions When all of following conditions are satisf ied It has elapsed 15 seconds after the start of this control Meaning of marks 52X1 52X2 Solenoid for compressor CM Compressor EEVH Heating electronic expansion valve EEVSC Subcooling coil electronic expansion valve SV6 Solenoid valve Oil return ON 15 seconds 6 seconds Normal control Normal control Initial opening Initial ope...

Page 62: ...perates according to the sequence shown below iii End conditions End of sequence Meaning of marks CM Heating 15 seconds 3 minutes Initial speed Normal control Initial opening Cooling Any state FMo1 FMo2 20S EEVH EEVSC OFF Fully open Fully closed Fully closed Time Start conditions established OFF ON Any state Any state CM Compressor EEVH Heating electronic expansion valve FMo1 FMo2 Fan motor EEVSC ...

Page 63: ...low iii End conditions End of sequence Note 1 It is fully closed till the end of 3 minute delay after the automatic reset Meaning of marks CM FMo1 FMo2 20S EEVH EEVSC ON Heating Cooling 15 seconds 3 minutes Initial opening Fully closed Time Start conditions established Normal control Initial speed Fully closed OFF OFF Fully open Any state Any state Any state CM Compressor EEVH Heating electronic e...

Page 64: ...If the time from starting till reaching the lower limit frequency after 4 way valve switching safeguard operation has elapsed 1minute the target frequency is changed to that of 1minute later from the lower limit frequency During this control the target frequency is increased at a rate of 5Hz minute from the lower limit frequency Note The starting point of this control is the completion point of in...

Page 65: ...tes from the lower limit frequency For 18 minutes after starting the starting point of this control is the completion point of inverter start 10 Hz From 18 minutes to 24 minutes it is increased at a rate of 5 Hz minute End conditions When either one of the following conditions is established a This frequency up control will end when the cumulative operation time after starting becomes 24 minutes I...

Page 66: ...as detected HP 1 5 MPa for 1 minute continuously the fan speed is dropped by one tap Control range of fan speed is 1th 8th speeds iii When states under this control change from HP 3 3 MPa to HP 3 3 MPa the fan speed is changed preferentially to the followings After the change it returns to the normal control When the outdoor air temperature 30ºC it changes to 7th or higher speed When the outdoor a...

Page 67: ...d Outdoor fan heating control The fan speed control is performed based on the low pressure detected with PSL during heating operation i Initial fan speed is 6th speed ii Speed is changed depending on the low pressure value When it is detected LP 0 75 MPa for 30 seconds continuously the fan speed is raised by 1 tap When it is 0 75 MPa LP 0 85 MPa the present fan speed is maintained When it is detec...

Page 68: ...conditions have been met when any of the following conditions is satisﬁed When the outdoor heat exchanger temperature sensed by Tho R and the outdoor air temperature sensed by Tho A dropped below the defrosting start temperature in Fig 1 for 30 seconds continuously When the suction pressure saturated temperature calculated by the low pressure sensed by PSL and the outdoor air temperature sensed by...

Page 69: ...ed further 2 This control terminates when it is lower than the reset value for 3 minutes continuously or lower than the setting value for 6 minutes continuously c Power transistor temperature PT protective control If the power transistor temperature exceeds 75 C the compressor speed is controlled Speed is reduced once each minute Retention Release 72 75 Power transistor temp C b Time condition of ...

Page 70: ... to water spray unit etc 6 9 Spare 7 Test run a Start conditions i Turn ON the test run switch SW5 1 The switch is invalid if it is turned ON before the power ON ii Pump down switch SW5 3 must be turned OFF b Contents of control i Turning ON the dip switch SW5 2 conducts cooling operation and turning OFF SW5 2 conducts heating operation 1 Cooling operation Compressor operation frequency control is...

Page 71: ...ration condition is desplayed on the LCD of remote controller and is transferred to optional centralised controller 4 When the control comand from remote controller is not accepted Under the condition of the system all stop status by external input Center is dispalyed See Item 5 mentioned below 5 CnS1 performs the following operations depending on the short circuit or open of the jumper wire J13 I...

Page 72: ...nd ratio can be switched with the dip switches SW4 5 4 6 on the outdoor PCB SW4 5 SW4 6 demand switching 0 Open 1 Short circuit Factory default is open SW4 5 SW4 6 Compressor Out put 0 0 80 1 0 60 0 1 40 1 1 0 5 CnS2 performs the following operations depending on the short circuited or open of the jumper wire J13 In the case of pulse input the pulse width is 500ms or larger J13 Short circuit ON Sh...

Page 73: ...Demand control Compressor Hz is restricted with the external input ON Demand rate is set with the dipswitch SW4 5 and SW4 6 2 step demand control Compressor Hz is restricted with the external input ON Demand rate is set with P04 on the 7 segment OFF Demand 1 OFF OFF ON ON OFF ON Remote Normal Normal Invalid short circuited short circuited Invalid short circuited Valid opened Demand control Demand ...

Page 74: ...excluded when the following invalid conditions are established For prevention of anomalous pressure rise at start For 30 seconds after either compressor has been turned ON During a special operation During the 4 way valve switching safeguard During the defrost control During the oil return control During the moved pump down control During the pump down control for removal of the unit Note Any cont...

Page 75: ... changeable from 10 to 600 seconds by P03 During this snow protection control the compressor s magnetic contactor 52X1 52X2 is ON d End conditions of outdoor fan snow protection control When folowing conditions are established i Snow protection control setting is invalid P02 0 or outdoor air temperature 5 C and external input of outdoor fan snow protection control OFF P07 5 and CnS1is opend ii Com...

Page 76: ...CnG1 equipped with short circuit pin is shorted or opened so as to forcibly determined whether the indoor unit is operated for cooling or heating ii If any operation mode other than the forcible mode is commanded from indoor unit the mode unmatch message is displayed on the remote controller or others and operation enters in the FAN mode SW3 7 CnG1 Operation ON Open Cooling only Close Heating only...

Page 77: ...nd green LED on the outdoor PCB ﬂash continuously 7 segment display shows PdS Channel 0 at the code display area iii During the pump down operation control the protective controls excluing low pressure protective control anomalous low pressure control and pressure ratio protection control and the error detection control are effective iv The sub cooling coil expansion valve EEVSC closes fully durin...

Page 78: ... as well Unless the reset operation is performed data are retained Therefore if normal operation is resumed without the reset operation and an anomalous stop occurs again no new anomalous data cannot be retained but former anomalous data are still retained unchanged If you press SW8 order of 1 the number changes 0 1 2 9 0 If you press SW9 order of 10 the number jumps to the leading code of each or...

Page 79: ...no button input is done for 10 seconds after change to C00 it changes to the display of automatically according to the precedence Display switching Special display is the display other than CXX When special display occurs Special display reset or button operation Button operation Button operation No operation for 10 seconds If the special display is reset in the meanwhile it remains as CXX CXX C99...

Page 80: ...e CM1 L 5 90 1 C C11 Spare C12 Tho P1 Power transistor temperature CM1 L 5 136 1 C C13 Spare C14 Tho SC Sub cooling coil temperature 1 L 18 73 1 C C15 Tho H Sub cooling coil temperature 2 L 25 73 1 C C16 Tho S Suction pipe temperature L 25 73 1 C C17 Inverter secondary current 0 50 1A C18 CT1 CM1 current 0 50 1A C19 Spare C20 EEVH1 Heating expansion valve opening angle 0 500 1 pulse C21 Spare C22 ...

Page 81: ...onnected indoor units 0 200 1 C42 Number of indoor units with thermostat ON 0 50 1 C43 Required Hz total 0 999 1Hz C44 Cumulative compressor operation time CM1 0 655 100h C45 Spare C46 Discharge pressure saturated temperature 50 70 0 1 C Range unable to display 10 C or under is in the unit of 1 C C47 Suction pressure saturated temperature 50 30 0 1 C Range unable to display 10 C or under is in the...

Page 82: ...are 0 1 0 OFF 1 ON 3 digit Spare 2 digit Spare 1 digit Spare C65 Protection control status 0 1 0 OFF 1 ON 3 digit Under the HP speed reduction control 2 digit Under the LP speed reduction control 1 digit Under the Td speed reduction control C66 Protection control status 0 1 0 OFF 1 ON 3 digit Compression ratio speed reduction control 2 digit Under the CS speed reduction control 1 digit Under the P...

Page 83: ...Mo2 stop 0 5 1 C77 Counter Current cut CM1 0 4 1 C78 Counter Compressor 1 starting failure 0 20 1 C79 Counter Inverter 1 comunication error 0 4 1 C80 Counter Power transistor 1 overheat 0 4 1 C81 Spare C82 Counter Inverter 1 desynchronism error 0 127 1 C83 Counter Inverter 1 comunication error cumulative 0 127 1 C84 Counter Indoor outdoor comunication error 0 255 1 C85 Counter CPU reset 0 255 1 C8...

Page 84: ...or outlet air temperature at heating is invalid P20 Allowable total capacity of thermostat ON indoor units to ensure certain indoor outlet temperature at heating Changes to 110 100 090 080 110 P21 Allowable number of thermostat ON indoor units to ensure certain indoor outlet temperature at heating 1 Newsuper link setting P30 Superlink communication status 0 Previous superlink 1 New superlink P31 A...

Page 85: ...current cut 25 Inverter 1 startup failure 26 Inverter 1 communication error 27 Inverter 1 anomalous compressor induced voltage and torque 28 Inverter 1 power tansistor overheat 29 Inverter 1 rotor lock 30 Liquid flooding anomaly 31 Stop by restriction Outdoor operation mode heating cooling switching 40 Heating overload protection 41 Stopping time by compressor dilution ratio protection control Les...

Page 86: ... address Ascii 2 bytes 00 3F Indoor address 16 units Ascii 2 bytes 16 units 40 7F Indoor capacity 16 units Ascii 3 bytes 16 units 022 280 Outdoor unit composition Outdoor unit capacity data Remarks Single type Example 10HP S10 S Display with Horse Power of single type iv Error retention and monitoring data Code No Write contents Record data Data write range Unit of write Number of bytes Contents 0...

Page 87: ...1 16 Capacity of connected indoor units 0 65535 2 17 Number of indoor units with thermostat ON 0 255 1 unit 1 18 Total capacity of indoor units with cooling thermostat ON 0 65535 2 19 Total capacity of indoor units with heating thermostat ON 0 65535 2 20 Operation mode 0 2 1 0 Stop 1 Cooling 2 Heating 21 Inverter CM1 actual operation frequency 0 255 1Hz 1 22 FMo1 Actual fan speed 0 65535 10min 1 2...

Page 88: ...al range 0 600min 10 hour PCB hardware input 48 External input 1 Bit0 63H1 0 Open 1 Short circuit Bit1 Spare 0 Open 1 Short circuit Bit2 CNS1 0 Open 1 Short circuit Bit3 CNS2 0 Open 1 Short circuit Bit4 CNG1 0 Open 1 Short circuit Bit5 CNG2 0 Open 1 Short circuit Bit6 Spare 0 Open 1 Short circuit Bit7 Spare 0 Open 1 Short circuit 49 Dip SW SW3 1 Bit0 SW3 1 0 OFF 1 ON Bit1 SW3 2 0 OFF 1 ON Bit2 SW3...

Page 89: ...52X2 0 OFF 1 ON Bit1 20S 0 OFF 1 ON Bit2 CH1 0 OFF 1 ON Bit3 SV1 0 OFF 1 ON Bit4 SV6 0 OFF 1 ON Bit5 SV11 0 OFF 1 ON Bit6 Spare 0 OFF 1 ON Bit7 Spare FMC1 2 0 OFF 1 ON 55 Relay output 1 Bit0 Operation output CnH 0 OFF 1 ON Bit1 Error output CnY 0 OFF 1 ON Bit2 External output CnZ 0 OFF 1 ON Bit3 Spare 0 OFF 1 ON Bit4 Spare 0 OFF 1 ON Bit5 Spare 0 OFF 1 ON Bit6 Spare 0 OFF 1 ON Bit7 Spare 0 OFF 1 O...

Page 90: ...er 0 127 1 1 Setting value display 86 Operation priority switching outsoor fan snow protection control 0 1 1 0 First push priority 1 Last push priority 87 Outdoor fan snow protection control 0 1 1 0 Invalid 1 Valid 88 Outdoor fan snow protection control ON time setting 30 Factory default 10 30 600 sec 10 sec 1 89 Demand ratio change value OFF 000 040 060 080 Factory default 0 OFF 1 90 Silent mode ...

Page 91: ... wiring etc Is the failure related to any hardware parts SV main body coil capillary check valve sensor etc Is it a major component Compressor inverter PCB and outdoor DC fan motor Is it a failure of electrical component Error on indoor unit or outdoor unit Indoor unit Outdoor unit Is the remote controller connected Was the power supply reset after the error occurred Check and write down the momen...

Page 92: ...f DC 15V is detected Be sure to wait for 3 minutes after turning the power circuit breaker off Disconnect the fan motor wires Both the power cable and control wires Turn the power circuit breaker OFF Wait 3 minutes Check E41 42 45 48 Connect the wires of fan motor 1 or 2 If no problem on both fan motor 1 and 2 go to further diagnosis of E41 E42 E45 E48 sequentially If DC15V is not detected the con...

Page 93: ...uid flooding anomaly System error E37 E37 1 2 E37 5 6 Outdoor heat exchanger temperature thermistor Tho R and subcooling coil temperature thermistor Tho SC H anomaly Thermistor wire breakage E38 E38 Outdoor air temperature thermistor anomaly Tho A Thermistor wire breakage E39 E39 1 Discharge pipe temperature thermistor anomaly Tho D1 Thermistor wire breakage E40 E40 High pressure anomaly 63H1 1 ac...

Page 94: ...efumidifying or heating operation from remote controller Note 1 Outdoor 35ºC Indoor 27ºCDB 19ºCWB It is normal This unit is designed to start in the soft start mode by detecting the compressor under dome temperature when it restart after power reset It is necessary to replace to higher capacity unit or to install additional unit Compressor refrigerant oil protective control at starting is activate...

Page 95: ...r heating operation from remote controller Note 1 Outdoor 7ºC Indoor 20ºC It is normal This unit is designed to start in the soft start mode by detecting the compressor under dome temperature when it restart after power reset It is necessary to replace to higher capacity unit or to install additional unit Compressor refrigerant oil protective control at starting is activated For the contents of co...

Page 96: ...ulation resistance may drop to a few M because of refrigerant migrated in the compressor When the earth leakage breaker is activated at lower insulation resistance check the following points 6 hours after power ON check if the insulation resistance recovers to normal When power ON crankcase heater heat up compressor and evaporates the refrigerant migrated in the compressor Check if the earth leaka...

Page 97: ...inate looseness Prevent the vibration from transmitting to wall and etc by fixing pipes on the wall tightly or wrapping rubber cushion around the pipe which goes through the hole in the wall or applying other appropriate means Strength of ceiling wall floo etc may be insufficient Review the installation place or apply reinforcement to increase the strength Check for leaning of installed unit or in...

Page 98: ...or liquid flows through inside of piping of air conditioner It is likely to occur particularly during cooling or defrosting in the heating mode It is normal The noise vibration occurs when the refrigerant starts or stops flowing It is normal When the defrosting starts or stops during heating mode the refrigerant flow is reversed due to switching 4 way valve This causes a large change in pressure w...

Page 99: ...rant Intrusion of air nitrogen etc In such case it is necessary to recover refrigerant vacuum dry and recharge refrigerant Since there could be many causes of noise vibration the above may not cover all In such case check the conditions when where how the noise vibration occurs according to following check points and ask our consultation Indoor outdoor unit Cooling heating fan mode Startup stop du...

Page 100: ...setting YES NO Does the louver link press LS till crick sound can be heard NO NO YES NO NO YES In cases of FDTW FDTS and FDTQ Does the louver operate when power on Note 1 LM Louver motor 2 LS Limit switch YES NO NO NO NO YES YES Operate after waiting for more than 1 minute It is normal if LM can be stopped by pressing LS two times In cases of FDT FDTC FDE and FDK Check the remote controller whethe...

Page 101: ...s DC5V detected between of CNW2 Is power supply to FM LM and etc OK Note 1 FDT and FDTC series F200 F201 Other than FDT and FDTC Fuse between wires 1 2 3 4 Other than FDT and FDTC series FDT and FDTC series Is DC18V or higher detected between Red Red CNW2 at the transformer secondary side Outdoor Noise filter PCB anomaly Replace it Wrong wiring or broken wires between outdoor and indoor units Indo...

Page 102: ... secondary side Is DC18V detected between of CNW2 Disconnect the remote controller wires NO Is DC15V or higher detected between X Y of indoor unit terminal block Other than FDT and FDTC Series FDT and FDTC Series YES YES YES YES NO NO YES NO NO Correct it Replace wires Replace remote controller Indoor power PCB anomaly Replace it Indoor control PCB anomaly Replace it Replace transformer Indoor con...

Page 103: ...lace noise filter PCB Connect wires correctly Indoor control PCB anomaly Replace it Indoor outdoor control PCB anomaly Replace it Remote controller anomaly Replace it Breakage of wires for remote controller Replace it Correct the connecting wires between indoor and outdoor units Outdoor control PCB anomaly Replace it Breakage of connecting wire Noise Indoor control PCB anomaly Replace it 2 Error d...

Page 104: ...NO Isn t there any short circuit between phases of noise filter Isn t there any crack or damage on power transistor module or diode stack Isn t there any anomaly on reactor Replace noise filter Replace reactor Replace inverter PCB Replace fuse 2 Error detection method 3 Condition of error displayed 4 Presumable cause Fuse blown Noise filter anomaly Anomalous connection of wire between PCBs Indoor ...

Page 105: ...block Is The fuse on indoor control PCB OK Is AC18V or higher is detected between Red Red at secondary side of indoor transformer 1 Is DC10 11V between X Y at indoor control PCB side when removing remote controller Note 1 except FDT and FDTC Fuse blown Replace fuse Transformer anomaly Remote controller wire short circuited Remote controller anomaly Indoor control PCB anomaly Remote controller anom...

Page 106: ... AC380 415V detected between L1 L2 L2 L3 L3 L1 respectively at outdoor terminal block Is AC220 240V detected between L N at indoor teminal block NO NO NO NO NO YES YES YES YES YES YES A WAIT Indoor control PCB anomaly Replace it Indoor control PCB anomaly Replace it Remote controller anomaly Replace it Breakage of wires for remote controller Replace it Correct the connecting wires between indoor a...

Page 107: ...here any anomaly on outdoor fan motor Once turn OFF the breaker and turn ON it again at 3 minute after power OFF Does it become normal From previous page Check inverter before replacement of 52C NO NO NO NO NO NO YES YES YES YES YES YES A B Normal Malfunction by temporary noise To next page Replace noise filte Connect the connecting wire properly Correct connection In case of breakage of wire repl...

Page 108: ...place power fuse Replace electrolytic capacitor Replace reactor Isn t there any short circuit between phases at input terminal of inverter PCB Isn t there any crack or damage on power transistor module or diode stack Isn t there any anomaly on reactor Isn t there any anomaly on electrolytic capacitor YES YES YES YES YES NO NO NO NO NO B 2 Error detection method 3 Condition of error displayed 4 Pre...

Page 109: ...en X Y detected at remote controller terminal Is DC10V or higher between X Y wires detected when removing remote controller Are connecting wires between indoor and outdoor units connected properly Remote controller anomaly Remote controller anomaly Correct connecting wire Indoor control PCB anomaly 2 Error detection method 3 Condition of error displayed 4 Presumable cause Fuse blown Noise filter a...

Page 110: ...Internal check ON even after 3 minutes Reset power supply 2 1 NO Malfunction by temporary noise Check peripheral environment Indoor control PCB anomaly Replace it Remote controller anomaly Replace it 2 Error detection method When normal communication between remote controller and indoor unit is interrupted for more than 2 minutes Detectable only with the remote controller 3 Condition of error disp...

Page 111: ...er supply is reset addresses will not be confirmed YES NO YES NO YES NO Review number of connected units Correct indoor unit address setting Implement test run Replace indoor control PCB Before replacement confirm whether the rotary switch for address setting is not damaged It was experienced that No 5 on rotary switch was not recognized 2 Error detection method More than 129 indoor units are conn...

Page 112: ...5 In both cases check signal wires between indoor outdoor units locally YES Is the outdoor unit address set on the indoor unit OK YES Is the LED on indoor control PCB OK YES Is protective fuse for the super link circuit blown NO Does E3 E5 occurs YES NO NO NO YES YES NO NO Temporary malfunction by noise Identify the source of noise and correct it Change to spare circuit Indoor control PCB anomaly ...

Page 113: ...s brakage of signal wires between indoor and outdoor units YES NO YES NO YES NO In case that indoor red LED flashes 2 times Repair signal wires Repair signal wires Go to the diagnosis of WAIT 1 Unit is normal Malfunction by temporary noise etc Outdoor control PCB anomaly Network communicaion circuit anomaly Unit is normal Replace it Malfunction by temporary noise etc 2 Error detection method When ...

Page 114: ...racreristics of indoor heat exchanger temperature thermistor Thi R1 R2 R3 Temperature ºC Insert the connector securely Replace thermistor Thi R Replace indoor control PCB 2 Error detection method Detection of anomalously low temperature resistance of Thi R1 R2 R3 3 Condition of error displayed If 50ºC or lower is detected for 5 seconds continuously compressor stops After 3 minute delay the compres...

Page 115: ... several times to prove any poor connection 15 10 5 0 10 30 40 20 50 Temperature thermistor resistance k Ω Temperature C Insert the connector securely Replace thermistor Thi A Replace indoor control PCB 2 Error detection method Detection of anomalously low temperature resistance of Thi A 3 Condition of error displayed If 50 C or lower is detected for 5 seconds continuously compressor stops After 3...

Page 116: ...s the drain pipe slop OK NO YES NO YES NO NO Check float switch Check the connection of CNI If it is loose connect it securely Replace indoor control PCB Check optional equipment Correct setting to Humidifier drain motor interlock Indoor control PCB anomaly Replace it Check the wiring of drain motor Correct it Check drain motor 2 Error detection method Float switch is activated 3 Condition of erro...

Page 117: ...icable model 5 Troubleshooting All models Diagnosis Countermeasure Aren t more than 17 indoor units connected to one remote controller NO YES Remote controller anomaly Replace it Reduce to 16 or less units 2 Error detection method When it detects more than 17 of indoor units connected to one remote contorller 3 Condition of error displayed Same as above 4 Presumable cause Excessive number of indoo...

Page 118: ...rror displayed Same as above 4 Presumable cause Mistake in address setting for indoor unit Note Address setting method list Figures in are for Previous superlink models Models for new superlink protocol Models for Previous superlink protocol Indoor unit address setting Outdoor unit address setting Indoor unit address setting Outdoor unit address setting Indoor unit No SW Outdoor unit No SW Outdoor...

Page 119: ...ce the fan motor Check power supply voltage Replace fan motor and power PCB Replace fan motor If the anomaly persists after replacing the fan motor replace the indoor control PCB Malfunction by temporary noise 2 Error detection method Detected by revolution speed of indoor fan motor 3 Condition of error displayed When actual revolution speed of indoor fan motor drops to lower than 200min 1 for 30 ...

Page 120: ...ign matter Replace fan motor Replace fan motor and power PCB Replace fan motor If this anomaly persists after replacing the fan motor replace indoor control PCB Malfunction by temporary noise 2 Error detection method Detected by revolution speed of indoor fan motor 3 Condition of error displayed When actual revolution speed of indoor fan motor drops to lower than 200min 1 for 30 seconds continuous...

Page 121: ... Correct the address setting of the master indoor unit Supply the power to the master indoor unit Connect the superlink signal wires correctly㪅㩷 Indoor control PCB anomaly Replace it Firstly replace PCB on the slave indoor unit If it is not recovered replace PCB on the master indoor unit as well Are the superlink signal wires connected between master and slave indoor units 1 When the address setti...

Page 122: ...r displayed Same as above 4 Presumable cause Mistake in SW7 1 setting Due to forgetting to turn OFF SW7 1 after indoor operation check Note Indoor operation check drain pump check mode If the power is ON after SW7 1ON indoor operation check drain pump check mode can be established 1 When the communication between remote controller and indoor PCB is established 15 seconds after power ON it goes to ...

Page 123: ...power PCB Check power supply voltage Replace fan motor and power PCB Replace fan motor If the anomaly persists after replacing the fan motor replace the indoor control PCB Malfunction by temporary noise 2 Error detection method Detected by rotation speed of indoor fan motor 3 Condition of error displayed When the actual fan rotation speed does not reach to the speed of required speed 50min 1 after...

Page 124: ...Correct or replace wire Defective indoor control PCB Replace indoor control PCB 2 Error detection method Panel switch PS has detected Open for more than 1 second 3 Condition of Error displayed Same as above 4 Presumable cause Defective panel switch Disconnection of wiring Defective indoor control PCB Note Does matter improve if panel switch is turned ON forcibly after resetting error Is grill open...

Page 125: ...y occurs again within 60 minutes after the initial detection 4 Presumable cause Anomalous connection of remote controller temperature thermistor Remote controller temperature thermistor anomaly Remote controller PCB anomaly Note After 10 seconds has elapsed since remote controller temperature thermistor was switched from invalid to valid E28 will not be displayed even if the thermistor harness is ...

Page 126: ...en indoor and outdoor units correctly YES NO Is the voltage between L1 N at the terminal block on indoor unit AC220 240V NO Is the voltage between L1 L2 L2 L3 and L3 L1 at the terminal brock on outdoor unit AC380 415V respectively YES YES NO Correct the wiring Replace outdoor control PCB Disconnection or breakage of wire between indoor and outdoor unit Replace indoor unit PCB 2 Error detection met...

Page 127: ...r address setting is not damaged It was experienced that No 5 on rotary switch was not recognized 2 Error detection method When the microcomputer of outdoor control PCB recognizes the dupplicated address No by scanning all adresses of outdoor units in the same superlink system 3 Condition of error displayed When duplicated outdoor unit address No exists in the same superlink system 4 Presumable ca...

Page 128: ...hether it occurs immediately after the power on or during operation or stopping It will be useful to persuade the customer why an improvement of power supply is required by showing these data Propose an improvement to the customer Check it as much as possible under the operating conditions for 30 minutes before error occurred Replace outdoor control PCB Wait and see without taking any action 2 Err...

Page 129: ... insufficient or not Check the gas leakage Insert connector securely Check if the characteristics are correct by referring the characteristics chart of E39 And if necessary replace the discharge pipe temperature thermistor Check it as much as possible under the operating conditions for 30 minutes before error occurred Wait and see Continue to obtain data if possible Keep connecting the Mente PC Re...

Page 130: ...he outdoor fan rotates Save data for 30 minutes before stopping in Mente PC Is the characteristics of Tho C1 OK NO NO NO NO NO NO NO YES YES YES YES YES YES YES Check and save the data of operating condition Check the ROM version Comfirmation of SV1 operatio Correct the connection of refrigerant piping and or signal wiring properly Adjust refrigerant amount properly Replace SV1 Replace the coil of...

Page 131: ...Check the conditions whether it occurs immediately after the power on or during operation or stopping Check the sensed value Compare the temperature on Mente PC with actual measured value Insert the connector securely Replace Thermistor Tho SC Tho H Tho R Replace outdoor control PCB 2 Error detection method Detection of anomalously low temperature resistance of Tho R or Tho SC or Tho H 3 Condition...

Page 132: ...t occurs immediately after the power on or during operation or stopping Check the sensed value Compare the temperature on Mente PC with actual measured value Insert the connector securely Replace thermistor Tho A Replace outdoor control PCB 2 Error detection method Detection of anomalously low temperature resistance of Tho A 3 Condition of error displayed If 30 C or lower is detected for 5 seconds...

Page 133: ...of operating condition Check the conditions whether it occurs immediately after the power on or during operation or stopping Check the sensed value Compare the temperature on Mente PC with actual measured value Insert the connector securely Replace thermistor Tho D1 Replace outdoor control PCB 2 Error detection method Detection of anomalously low temperature resistance of Tho D1 3 Condition of err...

Page 134: ...k high pressure sensor itself according to the troubleshooting procedure of E54 after retarting operation If the high pressure sensor PSH fails replace it If the connector is disconnected or the harness is broken correct it Also check whether the high pressure switch is properly mounted or not Open operation valve Check it as much as possible under the operating conditions for 30 minutes before er...

Page 135: ...Continue to obain data if possible Keep connecting the Mente PC If the cooling fan does not run in spite of the operation ON range check the voltage at the connector of cooling fan If the 220 240V is detected repalce cooling fan motor If 0V is detected replace outdoor control PCB After checking the loose connection of connetor or breakage of harness replace inverter PCB Connect the connector of th...

Page 136: ... separator If necessary replace the capillary tube and strainer as well Repair it according to the troubleshooting of E48 Replace inverter PCB or outdoor fan motor Check it as much as possible under the operating conditions for 30 minutes before error occurred Wait and see Continue to obain data if possible Keep connecting the Mente PC Replace power transistor module Replace inverter PCB Replace p...

Page 137: ...at total capacity of connected indoor units exceeds the limitation if tentative operation is required turn ON the dip switch SW5 4 on the outdoor control PCB However since this tentative solution could cause trouble be sure to correct it as soon as possible Signal wire may be connected to other outoor unit system Correct addresses Either one of addresses is wrong If the address corrected by rotary...

Page 138: ... OFF ON OFF OFF OFF Check and save the data of operating conditions Replace inverter PCB or outdoor fan motor Check it as much as possible under the operating conditions for 30 minutes before error occurred Wait and see Continue to obain data if possible Keep connecting the Mente PC Check whether the harness is broken Check whether the connector is loose If there is problem correct it Disconnect t...

Page 139: ...taken because it is judged that the power rest is not done after changing address Correct signal line In case of automatic address setting signal line cannot be connected to other outdoor unit system Test run Replace outdoor control PCB Rotary switch anomaly Before replacement please confirm whether the rotary switch for address setting is not damaged It was experienced that No 5 on rotary switch ...

Page 140: ...PC Check and save the data of operating conditions Replace fan motor Replace inverter PCB or fan motor Check it as much as possible under the operating conditions for 30 minutes before error occurred Wait and see Continue to obain data if possible Keep connecting the Mente PC Replace fan motor Replace outdoor control PCB 2 Error detection method If 400min 1 or lower of the fan rotation command and...

Page 141: ...d at site according to the piping length instructed on the label pasted on the panel of the unit Check whether the service valves are open Correct the connection of low pressure sensor connector Replace low pressure sensor Replace outdoor control PCB Correct the connection of temperature thermistor connector of heat exchanger Replace temperature thermistor of heat exchanger at evaporator side Repl...

Page 142: ...hin 2 minutes to 2 minutes 20 seconds after compressor ON compressor stops When the compressor is restarted automatically after 3 minutes delay if this anomaly occurs 3 times within 40 minutes 4 Presumable cause Broken thermistor harness or the internal wire of sensing section Check the molded section as well Disconnection of thermistor harness connection connector Outdoor control PCB anomaly Note...

Page 143: ...sure measure by pressure gauge YES Output voltage V Check and save the data of operating conditions Check the conditions whether it occurs immediately after the power on or during operation or stopping Check the sensed value Insert the connector securely and restart operation Temporary malfunction by noise Correct if the source of noise is specified Replace sensor PSH PSL Replace outdoor control P...

Page 144: ...ndition Check the conditions whether it occurs immediately after the power on or during operation or stopping Check the sensed value Compare the temperature of Mente PC data with actual measured value Insert the connector securely Replace power transistor temperature thermistor Tho P1 Replace outdoor control PCB 2 Error detection method Detection of anomalously low temperature resistance of Tho P1...

Page 145: ... save the data of operating condition Refrigerant might be migrated in the refrigerant oil in the compressor Wait for about one hour under the condition of power ON and start again Turn the on crankcase heater ON and evaporate the liquid refrigerant migrated in the compressor The model setting could be wrong Check the dip switch for model setting on the outdoor control PCB 2 Error detection method...

Page 146: ...and correct it Check the version No of software Is it latest Check whether the solenoid valve SV6 at the exit of oil separator is open during compressor stopping Is the pressure equalized Replace the cable If there is a problem on the terminal of compressor replace the compressor Check the Model Wait and see Replace compressor Replace inverter PCB or power transistor module Check 15V on the outdoo...

Page 147: ...ossible under the operating conditions for 30 minutes before error occurred Correct it according to the troubleshooting procedure of E59 Correct it according to the troubleshooting procedure of E42 Replace compressor Check the insulation resistance and coil resistance of compressor If necessary replace compressor Replace compressor Temporary malfunction by noise 2 Error detection method Detection ...

Page 148: ...opping in Mente PC YES NO NO YES Check and save the data of operating conditions Check the conditions whether it occurs immediately after the power on or during operation Replace remote control PCB Replace indoor control PCB Check the cause of emergency stop It is better to have the data for 30 minutes before stopping when instructing the installer 2 Error detection method When ON signal is inputt...

Page 149: ...o not carry out wrong insertion The PCB will be destroyed if a mistake is made in putting CNA2 brown and CNQ3 yellow CNA2 CNQ3 CNI CNA2 2 CN 2 CNS1 CNS2 CNG1 CNG2 CNX1 CNU1 CNF2 CNF1 CNP1 Precautions for Safety Since the following precaution is the important contents for safety be sure to observe them WARNING and CAUTION are described as follows Indicates an imminently hazardous situation which wi...

Page 150: ... 147 11 KX T 166 Appearance of the controller PCB voltage measurement point between F1 DS1 Target PCB Fan motor voltage measurement point between L63 L64 Fig 1 Voltage measurement points ...

Page 151: ...11 Model All models all OF F OFF OFF ON OFF Precautions for Safety f Since the following precaution is the important contents for safety be sure to observe them WARNING and CAUTION are described as follows Indicates an imminently hazardous situation which will result in death or serious injury if proper safety procedures and instructions are not adhered to Indicates a potentially hazardous situati...

Page 152: ...d W beforehand Then tighten the harness snubber capacitor and the power transistor with the screw together Connect snubber capacitor with P and N Installation Meth od to Power transistor Terminal Inverter PCB Connection binder Snubber ca pacitor Harness Power transistor Metallic pillar PCB PCB voltage measurement point PCB voltage measurement point Fig 1 Voltage Measurement Points ...

Page 153: ... 8 Assemble the control box as before Precautions for Safety Since the following precaution is the important contents for safety be sure to observe them WARNING and CAUTION are described as follows Indicates an imminently hazardous situation which will result in death or serious injury if proper safety procedures and instructions are not adhered to Indicates a potentially hazardous situation which...

Page 154: ...l Previos SL OFF Super link protocol New SL SW7 8 9 Function setting Switch Function SW7 Data erase data write SW8 7 segment dispalay No UP order of 1 SW9 7 segment dispalay No UP order of 10 Function of Connector Connector Function Color Connector Function Color CNEEV1 Heating EEV Red CNF2 Sub cooling coil thermistor 1 Green CNEEV2 Sub cooling coil EEV White CNP1 Power transistor thermistor CM Ye...

Page 155: ...㫀㫆㫅㪜㫏㫋㪼㫉㫅㪸㫃㩷㫀㫅㫇㫌㫋㪣㪼㫍㪼㫃㪁㪆㪧㫌㫃㫊㪼㪪㪼㪼㩷㫋㪸㪹㫃㪼㩷㪈㪣㪼㫍㪼㫃㪥㫆㫉㫄㪸㫃㪘㪪㩷㫇㪼㫉㩷㫄㫆㪻㪼㫃㪪㪼㪼㩷㫋㪸㪹㫃㪼㩷㪊㪥㫆㫉㫄㪸㫃㪘㫊㩷㫇㪼㫉㩷㫍㫆㫃㫋㪸㪾㪼㪜㫉㪸㫊㪼㪜㫉㪸㫊㪼㪁㪆㪮㫉㫀㫋㪼㪪㫇㪸㫉㪼㪪㫇㪸㫉㪼㪪㫇㪸㫉㪼㪪㫇㪸㫉㪼㪪㫇㪸㫉㪼㪪㫇㪸㫉㪼㪩㪼㫊㪼㫉㫍㪼㪻㪩㪼㫊㪼㫉㫍㪼㪻㪩㪼㫊㪼㫉㫍㪼㪻㪩㪼㫊㪼㫉㫍㪼㪻㪩㪼㫊㪼㫉㫍㪼㪻㪢㪼㪼㫇㩷㪦㪝㪝㪢㪼㪼㫇㩷㪦㪝㪝㪟㪼㪸㫋㫀㫅㪾㪥㫆㫉㫄㪸㫃㪥㪼㫎㩷㪪㪣㩿㪘㫌㫋㫆㪀㪢㪼㪼㫇㩷㪦㪝㪝㪢㪼㪼㫇㩷㪦㪝㪝㪢㪼㪼㫇㩷㪦㪝㪝㪢㪼㪼㫇㩷㪦㪝㪝㪢㪼㪼㫇㩷㪦㪝㪝㪢㪼㪼㫇㩷㪦㪝㪝㪢㪼㪼㫇㩷㪦㪝㪝㪢㪼㪼㫇㩷㪦㪝㪝㪢㪼㪼㫇㩷㪦㪝㪝㪩㪼㫊㪼㫉㫍㪼㪻㪢㪼㪼㫇㩷㪦㪝㪝㪢㪼㪼㫇㩷㪦㪝㪝㪢㪼㪼㫇㩷㪦㪝㪝㪪㫇㪸㫉㪼㪥㪼㫎㩷㪪㪣㪁㪆㪧㫉㪼㫍㫀㫆㫌㫊㩷㪪㪣㪥㫆㫉㫄㪸㫃 ...

Page 156: ... 11 KX T 166 9 1 Exterior dimensions 9 OUTDOOR UNIT Service code L 1 Outdoor unit Models FDCR224KXE6 280KXE6 A PCB003Z362 153 ...

Page 157: ...igeration Systems Headquarters 16 5 Konan 2 chome Minato ku Tokyo 108 8215 Japan http www mhi co jp Because of our policy of continuous improvement we reserve the right to make changes in all specifications without notice Copyright MITSUBISHI HEAVY INDUSTRIES LTD C ...

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