Mitsubishi Electric PUY error codes
Codes
- 0403Error codeSerial communication error 1.Abnormal if serial communication between outdoor controller circuit board and outdoor power circuit board is defective. 2. Abnormal if communication between outdoor controller circuit board and M-NET board is not available.
- 1102Error codeDischarge temperature abnormality (Outdoor unit) ✻ For the check code on: 1. When 120˚C or more discharge temperature is detected during operations (the first time), outdoor unit stops once, mode is changed to restart mode after 3 minutes, then the outdoor unit restarts. 2. When 120 °C or higher discharge is detected again (the second time) within 30 minutes after the first stop of outdoor unit, mode is changed to restart mode after 3 minutes, then the outdoor unit restarts. 3. When 120˚C or more discharge is detected, again (the third time) within 30 minutes after pr
- 1300Error codeAbnormal low pressure (63L worked) Abnormal if 63L is worked (under0.03MPa) during compressor operation. 63L: Low-pressure switch (A42N only)
- 1301Error codeIf the sensor is 0.098MPa, stop the operation immediately after starting.
- 1302Error codeHigh pressure abnoramlity 1 (Outdoor unit): 1. When pressure sensor detects 3.87MPa or more during operations (the first time), outdoor unit stops once, mode is changed to restart mode after 3 minutes, then the outdoor unit restarts. 2. When a pressure of 3.87MPa or more is detected again (the second time) within 30 minutes after first stop of outdoor unit, mode is changed to restart mode after 3 minutes, then the outdoor unit restarts. 3. When 3.87MPa or more pressure is detected again (the third time) within 30 minutes after stop of out | High pressure abnoramlity 2 (Outdoor unit): When pressure sensor detects 0.098MPa or less just before starting of operation, error stop is observed with code No.“1302” displayed.
- 1500Error codeOvercharged refrigerant abnormality: 1. If the discharge SH 10K is detected during operation (at first detection), the outdoor unit stops at once. The 3 minutes restart prevention mode is entered. After three minutes, the outdoor unit starts up again. 2. If the discharge SH 10K is detected again within 30 minutes after the outdoor unit stops (second detection), an abnormal stop is applied, and “1500” is displayed. 3. If discharge SH 10K is detected more than 30 minutes after the outdoor unit stops, the state is the same as the firs
- 2500Error codeLeakage (water) abnormality: When drain sensor detects flooding during drain pump OFF.
- 2502Error code| Drain pump abnormality (This error occurs for all the indoor units in the same refrigerant system.): When drain sensor detects flooding during drain pump ON in the stopped indoor unit.
- 2503Error codeDrain sensor abnormality: When short circuit or open circuit is detected during operation (cannot be detected during OFF). Short circuit: detected 90˚C or more Open circuit: detected –20˚C or less
- 2600Error codeWater leakage: –
- 2601Error codeWater-supply cut: –
- 4100Error codeCompressor overcurrent interruption (When compressor locked) Abnormal if overcurrent of DC bus or compressor is detected within 30 seconds after compressor starts operating.
- 4103Error codeReverse phase abnormality: 1. The operation cannot be started because of the reserve phase of one of the power lines (L1, L2 or L3). 2. When turning on the power, the operation cannot be started because of the open phase of one of the power lines (L1 or L2).
- 4108Error codeOver-current protection: 1. First detection If 51C2 is started during the operation of No.2 compressor, the outdoor unit stops once, turns to anti-restart mode for 3 minutes, and restarts after 3 minutes. Second detection If 51C2 is started again within a minute after restarting in compliance with 1. above, the unit makes an error stop and the error code “4108” will appear. 3. There will be a minute grace period of an error stop when No.2 compressor restarts after the outdoo
- 4115Error codePower supply sync signal abnormality: The frequency cannot be determined when the power is switched on. (The power supply’s frequency cannot be detected. The outdoor fan cannot be controlled by phase control.)
- 4116Error codeFan speed abnormality (motor abnormality): [ LOSSNAY ] 1. The motor keep running even if the power is OFF. 2. The thermal overload relay is ON. (Only for the three-phase model) [ Indoor unit ] If detected less than 180rpm or more than 2000rpm, the indoor unit will restart and keep running for 3 minutes. If detected again, the display will appear.
- 4119Error code2 connector open Abnormal if both 63H and 63L connector circuits are open for 3 minutes continuously after power supply. 63H: High-pressure switch 63L: Low-pressure switch <A42N only>
- 4210Error codeCompressor overcurrent interruption Abnormal if overcurrent DC bus or compressor is detected after compressor starts operating for 30 seconds.
- 4220Error codeAbnormality such as overvoltage or voltage shortage and abnormal synchronous signal to main circuit Abnormal if any of followings are detected during compressor operation; • Abnor
- 4225Error codedrop abnormality (Error details No.108): operation. (Software detection) | drop abnormality (Error details No.108) Bus voltage rise abnormality (Error details No.109) Bus Voltage abnormality (Error details No.110) Logic error (Error details No.111): operation. (Software detection)
- 4230Error codeBus voltage abnormality If Vdc 772V or Vdc 308V is detected. (H/W detection) If only the H/W error logic circuit operates, and no identifiable error is detected. <In the case of 4230>
- 4235Error codeoverheat protection ✻ For the check code on: When the heat sink temperature (THHS1) 95˚C is detected. <In the case of 4235> When the heat sink temperature (THHS5) 85˚C is detected. “ the inverter, refer to 6. Inverter and
- 4240Error codeOverload: When the output current (lac)
- 4245Error codeabnormality IPM: > Imax (Arms) or THHS > 90˚C is detected for 10 minutes in a row during the inverter operation. Imax Type P200 27 Arms Type P250 27 Arms Type P300 27 Arms Type P350 27 Arms Type P400 27 Arms Type P450 27 Arms Type P500 27 Arms Type P550 27 Arms Type P600 27 Arms Type P650 27 Arms
- 4250Error codeAbnormality of power module Check abnormality by driving power module in case overcurrent is detected. (UF or UP error condition)
- 4255Error code(Error details No.101) ACCT overcurrent abnormality (Error details No.102) DCCT overcurrent abnormality (Error details No.103) ACCT overcurrent abnormality (Error details No.106, 107) IPM short/grounding fault (Error details No.104) ✻ For the check code on: Overcurrent break (94Apeak or 35Arms) detected by the current sensor. IPM short damage or grounding at the load side detected just before starting the inverter. “ the inverter, refer to 6. Inverter and | abnormality (Error details 105): (compressor) side detected just before starting the inverter.
- 4260Error codeCooling fan: <In the case of 4260>
- 4400Error codeAbnormality in the outdoor fan motor The outdoor fan motor is considered to be abnormal if the rotational frequency of fan motor is abnormal when detected during operation. Fan motor rotational frequency is abnormal if; • 100 rpm or below detected continuously for 15 seconds at 20: [68˚F] or more outside air temperature • 50 rpm or below or 1500 rpm or more detected continuously for 1 minute. <A12, 18, 42N only>
- 5101Error codeAir inlet unit): When shorting or open of the sensor is detected while the thermo is ON, the restart prevention mode will be operated for 3 minutes. If there | Discharge (TH11) (TH12): 1. Shorting (high temperature intake) or open (low temperature intake) of the
- 5102Error codeLiquid (Indoor pipe error sensor: is no recovery after 3 minutes, the unit will make an error stop. (If there is a recovery, the unit will run normally.) Shorting: detectable at 90˚C or higher
- 5103Error code
- 5104Error code(Detection is inoperative for 10 minutes of compressor starting process and for 10 minutes after and during defrosting.)
- 5105Error codePiping (TH5): thermistor is detected. (First detection) The outdoor unit will stop at once and the restart
- 5106Error codeOutdoor air temperature (TH6) unit): prevention mode will be operated for 3 minutes. When the detection temperature of
- 5107Error code(Outdoor Liquid temperature (TH7) abnormality: the thermistor is within the normal range just before the restart, the unit must be restarted. 2. When shorting or open is detected again (second
- 5108Error codeSC coil outlet sensor (TH8) Temperature: detection) during the operation after the restart, the outdoor unit will stop at once and the restart prevention mode will be operated for 3 minutes. When the detection temperature of the thermistor is within the normal range just before the restart, the unit must be restarted. 3. When shorting or open is detected again (third detection) during the operation after the restart, the outdoor unit will make an error stop. 4. When shorting or open of the thermistor is detected just before the restart
- 5110Error codeRadiator panel temperature sensor abnormality Error details 01: Compressor INV side Error details 05: Fan INV side ✻ For the check code on: THHS open or shorting is detected just before starting the inverter or during operation. “ the inverter, refer to 6. Inverter and
- 5201Error codeHigh pressure sensor abnormality (outdoor unit): 1. When pressure sensor detects 0.098MPa or less during operation, outdoor unit once stops with 3 minutes restarting mode, and restarts if the detected pressure of pressure sensor exceeds 0.098MPa immediately before restarting. 2. If the detected pressure of sensor is less than 0.098MPa immediately before restarting, error stop is commenced displaying 5201. 3. Under 3 minutes restarting mode, LED displays intermittent fault check. 4. During 3 minutes after compressor start, defrosting and 3 minu
- 5202Error code— 63L connector open Abnormal if 63L connector circuit is open for 3 minutes continuously after power supply. 63L: Low-pressure switch <A42N only>
- 5300Error codeCurrent sensor error • Abnormal if current sensor detects –1.5A to 1.5A during compressor operation. (This error is ignored in case of test run mode.) This error is ignored in case of test run w mode. • It’s abnormal for 38A the input current or 10 seconds continuous 34A or more.
- 5301Error codeACCT sensor: -1.5Arms output current's | IPM-: IPM open damage or CNCT2 (1) ACCT sensor
- 5305Error codeabnormality (Error details No.115) DCCT sensor abnormality (Error details No.118) ✻ Other than P200 model ACCT sensor/circuit abnormality (Error details No.117) DCCT sensor/circuit abnormality (Error details No.116) ✻ Other than P200 model ✻ For the check code on: effective value 1.5Arms was detected during inverter operation. An abnormal value is detected in the DCCT detection circuit just before the INV started. An abnormal value was detected with the ACCT detection circuit just before the INV started. An abnormal value was detected with the DCCT detection circuit just before the INV started. “ the inverter, refer to 6. Inverter and | open/ACCT connection abnormality (Error details No.119) ACCT miss-wiring abnormality (Error details No.120) ✻ For the check code on ACCT-U ←Compressor-input phase U 2. Communication/system Checking Meaning, code: dislocation was detected just before INV started. (Sufficient current was not detected during self-diagnosis just before (2) Wire connection starting.) (3) ACCT is faulty. (4) Compressor (5) Inverter circuit Improper installation of the (1) ACCT sensor ACCT sensor was detected. installed. “ ” the inverter, refer to 6. Inverter and compressor in the →IPM-output ←Compressor-input phase U phase U Red wire errors detecting method Cause
- 6600Error codeerror> Meaning of error code and detection method Address duplicate definition This error is displayed when transmission from the units of same address is detected. Note) The address and attribute displayed at remote controller indicate the controller that detected abnormality.
- 6601Error codeUnset polarity The error detected transmission distinguish M-NET transmission: (1) No voltage is applied M-NET transmission when G-50A is connected processor cannot the polarities of the (2) M-NET transmission line. which G-50A is connected short-circuited.
- 6602Error codeTransmission processor hardware abnormality Though transmission processor intends to transmit “0”, “1” is displayed on transmission line. Note: The address/attribute shown on remote controller indicates the controller which has detected error.
- 6603Error codeBUS BUSY 1. Over error by collision damage Abnormal if transmitting is not possible for 8-10 minutes continuously because of collision of transmission. 2. Data could not reach transmission wire for 8-10 minutes continuously because of noise or etc. Note) The address and attribute displayed at remote controller indicate the controller that detected abnormality.
- 6606Error codeCommunication error with communication processor Defective communication between unit processor and transmission processor Note) The address and attribute display at remote controller indicate the controller that detected abnormality.
- 6607Error codeSystem composition system refrigerant Single (1): No ACK abnormality Generating Detecting Display of unit method trouble address 1. Outdoor Remote No reply unit(OC) controller (ACK) at BC (RC) transmission to OC 2. Indoor Remote No reply unit (IC) controller (ACK) at RC (RC) transmission to IC 3. Remote Remote No reply controller controller (ACK) at IC (RC) transmission (RC) to RC Meaning, | (continued) System composition refrigerants plural using system operation Group (2): No ACK abnormality Generating Detecting Display of unit method trouble address 1. Outdoor Remote No reply unit(OC) controller (ACK) at BC (RC) transmission to OC 2. Indoor Remote No reply unit (IC) controller (ACK) at RC (RC) transmission to IC 3. Remote Remote No reply controller controller (ACK) at IC (RC) (RC) transmission to RC Meaning, | (continued) Generating System composition 1. 2. (MELANS) controller with system Connecting (3): No ACK abnormality When interval error. Display of Detecting unit trouble method address Outdoor Remote No reply unit(OC) controller (ACK) at BC (RC) transmission to OC Indoor Remote No reply unit (IC) controller (ACK) at (RC) transmission of SC to IC Meaning, | (continued) Generating System composition 3. (MELANS) controller with system Connecting (3): No ACK abnormality When interval error. Display of Detecting unit trouble method address Remote Remote No reply controller controller (ACK) at (RC) (RC) transmission of IC to RC No reply (ACK) at transmission of MELANS to R
- 6608Error code11-5. TROUBLESHOOTING Phenomena 1. Remote controller work. 2. “PLEASE WAIT” on the remote 3. When pressing operation switch display is appeared turned off soon.: M-NET NO RESPONSE 1 Abnormal if a message was transmitted and there were reply (ACK) that message was received, but response command 2 does not return. Transmitting side detects abnormality every 30 seconds, 6 times continuously. Note) The address and attribute displayed at remote controller indicate the controller that did not reply (ACK). 3 4 BY INFERIOR display does not 1DC12V is not supplied (Power supply display 2DC12~15V is supplied no display is indicated. • “PLEASE WAIT” is • “PLEASE WAI
- 6831Error codeMA Communication no error: code Meaning, detecting method 1. Communication between MA remote controller and