Mitsubishi Electric PUHY error codes
Codes
- 4240Error codeOverload protection: If the output current of "(Iac) >Imax (Arms)" or "THHS > TOL" is continuously detected for 10 minutes during inverter operation. Refer to the relevant pages for the details of model names and the specified values. [7-1-1 Inverter Protection Level Table](page 155) | Overload protection: If the output current of "(Iac) >Imax (Arms)" or "THHS > TOL" is continuously detected for 10 minutes or more during inverter operation. Refer to the relevant pages for the details of model names and the specified values. [7-1-1 Inverter Protection Level Table](page 155)
- 4245Error codeOverload protection (YXU): In the case of 4240 If the output current of "(Iac) >Imax (Arms)" or "THHS > TOL" is continuously detected for 10 minutes during inverter operation. In the case of 4245 and 4246 If the output current of "(Iac) >Imax (Arms)" is continuously detected for 10 minutes during inverter operation. For details of the model names and specified values, refer to the following page(s). The note of [7-1 Error Code and Preliminary Error Code Lists]. | Overload protection (TXU): In the case of 4240 If the output current of "(Iac) >Imax (Arms)" or "THHS > TOL" is continuously detected for 10 minutes during inverter operation. In the case of 4245 and 4246 If the output current of "(Iac) >Imax (Arms)" is continuously detected for 10 minutes during inverter operation. For details of the model names and specified values, refer to the following page(s). The note of [7-1 Error Code and Preliminary Error Code Lists].
- 4246Error codeOverload protection (YXU): In the case of 4240 If the output current of "(Iac) >Imax (Arms)" or "THHS > TOL" is continuously detected for 10 minutes during inverter operation. In the case of 4245 and 4246 If the output current of "(Iac) >Imax (Arms)" is continuously detected for 10 minutes during inverter operation. For details of the model names and specified values, refer to the following page(s). The note of [7-1 Error Code and Preliminary Error Code Lists]. | Overload protection (TXU): In the case of 4240 If the output current of "(Iac) >Imax (Arms)" or "THHS > TOL" is continuously detected for 10 minutes during inverter operation. In the case of 4245 and 4246 If the output current of "(Iac) >Imax (Arms)" is continuously detected for 10 minutes during inverter operation. For details of the model names and specified values, refer to the following page(s). The note of [7-1 Error Code and Preliminary Error Code Lists].
- 4250Error codeDCCT overcurrent (H/W detection) (Detail code 103) Instantaneous overcurrent (Detail code 106) Overcurrent (effective value) (Detail code 107): When a current above the specified value is detected by the electric current sensor. Refer to the relevant pages for the details of model names and the specified values. [7-1-1 Inverter Protection Level Table](page 155) | Instantaneous overcurrent (Detail code 106) Overcurrent (effective value) (Detail code 107): When a current above the specified value is detected by the electric current sensor. Refer to the relevant pages for the details of model names and the specified values. [7-1-1 Inverter Protection Level Table](page 155)
- 4255Error codeIPM error (Detail code 101): In the case of 4250 If an overcurrent is detected by the overcurrent detection circuit on the INV board. In the case of 4255 and 4256 If an error signal is detected from IPM on the fan board. | Overcurrent error due to short-circuited motor (Detail code 105): If a short is detected in the compressor or fan motor just before starting the inverter operation. | Codes Instantaneous overcurrent (Detail code 106): If the current sensor detects an overcurrent other than the specified value. * For details of the model names and specified values, refer to the following page(s). The note of [7-1 Error Code and Preliminary Error Code Lists] Using | Motor synchronization loss (Detail code 137): If fan motor locking is detected during operation.
- 4256Error codeIPM error (Detail code 101): In the case of 4250 If an overcurrent is detected by the overcurrent detection circuit on the INV board. In the case of 4255 and 4256 If an error signal is detected from IPM on the fan board. | Overcurrent error due to short-circuited motor (Detail code 105): If a short is detected in the compressor or fan motor just before starting the inverter operation. | Codes Instantaneous overcurrent (Detail code 106): If the current sensor detects an overcurrent other than the specified value. * For details of the model names and specified values, refer to the following page(s). The note of [7-1 Error Code and Preliminary Error Code Lists] Using | Motor synchronization loss (Detail code 137): If fan motor locking is detected during operation.
- 4260Error codeHeatsink overheat protection at startup: When heatsink temperature (THHS) remains at or above TOH for 10 minutes or longer after inverter startup models TOH INV35Y, 36Y 100˚C INV37YC 94˚C
- 5101Error codeReturn air temperature sensor (TH21) fault (Indoor unit) Return air temperature sensor (TH4) fault (OA processing unit): If a short or an open is detected during thermostat ON, the outdoor unit turns to anti-restart mode for 3 minutes. When the error is not restored after 3 minutes (if restored, the outdoor unit runs normally), the outdoor unit makes an error stop. ∗During heating operation ∗During cooling operation for 3 minutes after the compressor t
- 5102Error codePipe temperature sensor (TH22) fault (Indoor unit) Pipe temperature sensor (TH2) fault (OA processing unit): If a short or an open is detected during thermostat ON, the outdoor unit turns to anti-restart mode for 3 minutes. When the error is not restored after 3 minutes (if restored, the outdoor unit runs normally), the outdoor unit makes an error stop. ∗During heating operation ∗During cooling operation for 3 minutes after the compressor t | HIC bypass circuit outlet temperature sensor (TH2) fault (Outdoor unit): When a short (high temperature intake) or an open (low temperature intake) of the thermistor is detected (the first detection), the outdoor unit stops, turns to anti-restart mode for 3 minutes, and restarts when the detected temperature of the thermistor.
- 5103Error codeGas-side pipe temperature sensor (TH23) fault (Indoor unit) Gas-side pipe temperature sensor (TH3) fault (OA processing unit): If a short or an open is detected during thermostat ON, the outdoor unit turns to anti-restart mode for 3 minutes. When the error is not restored after 3 minutes (if restored, the outdoor unit runs normally), the outdoor unit makes an error stop. ∗During heating operation ∗During cooling operation for 3 minutes after the compressor t | Heat exchanger outlet temperature sensor (TH3) fault (Outdoor unit): When a short (high temperature intake) or an open (low temperature intake) of the thermistor is detected (the first detection), the outdoor unit stops, turns to anti-restart mode for 3 minutes, and restarts when the detected temperature of the thermistor.
- 5104Error codeOutdoor air temperature sensor failure (indoor unit): If a short or an open is detected during thermostat ON, the outdoor unit turns to anti-restart mode for 3 minutes. When the error is not restored after 3 minutes (if restored, the outdoor unit runs normally), the outdoor unit makes an error stop. ∗During heating operation ∗During cooling operation for 3 minutes after the compressor t | Outdoor air temperature sensor failure (OA processing unit) 2.
- 5105Error codeAccumulator inlet (TH5) temperature sensor failure (outdoor unit): When a short (high temperature intake) or an open (low temperature intake) of the thermistor is detected (the first detection), the outdoor unit stops, turns to anti-restart mode for 3 minutes, and restarts when the detected temperature of the thermistor. When a short or an open is detected again (the second detection) after the first restart of the outdoor unit, the outdoor unit stops, turns to anti-restart mode for 3 minutes, and restarts in 3 minutes when the detected temperature is within
- 5106Error codeHIC circuit outlet temperature sensor (TH6) fault (Outdoor unit): When a short (high temperature intake) or an open (low temperature intake) of the thermistor is detected (the first detection), the outdoor unit stops, turns to anti-restart mode for 3 minutes, and restarts when the detected temperature of the thermistor. When a short or an open is detected again (the second detection) after the first restart of the outdoor unit, the outdoor unit stops, turns to anti-restart mode for 3 minutes, and restarts in 3 minutes when the detected temperature is within
- 5107Error codeOutside air (TH7) temperature sensor failure (outdoor unit): When a short (high temperature intake) or an open (low temperature intake) of the thermistor is detected (the first detection), the outdoor unit stops, turns to anti-restart mode for 3 minutes, and restarts when the detected temperature of the thermistor. When a short or an open is detected again (the second detection) after the first restart of the outdoor unit, the outdoor unit stops, turns to anti-restart mode for 3 minutes, and restarts in 3 minutes when the detected temperature is within
- 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
- 5109Error codeCS circuit liquid temp. (TH9) (TH9b) SC coil inlet (TH9a): ter the previous restart of the outdoor unit, the outdoor unit makes an error stop. 4.When a short or an open of the thermistor is detected just before the restart of the out
- 5110Error code(P96, P120, P144 models only) Heatsink temperature sensor (THHS) fault (Detail code 01): When a short or an open of THHS is detected just before or during the inverter operation. | Heatsink temperature sensor (THHS) fault (Detail code 01): When a short or an open of THHS is detected just before or during the inverter operation.
- 5111Error codeLiquid inlet (TH11) Bypass outlet controlled) (TH12) HEX inlet liquid level detecting (BC (TH13) abnormality HEX outlet liquid level detecting (TH14) sensor Bypass inlet Thermal (TH15) Intermediate section (TH16): 1. When short (high temp. inlet) or open (low temperature inlet) of thermistor is detected during operation, error stop will be commenced displaying “5111” or “5112”, “5113” or “5114”, or “5115” or “5116. 2. The above detectection is not made during defrostig and 3minute after changing operation mode.
- 5112Error codeCompressor shell temp. (TH10): door unit, the outdoor unit makes an error stop, and the error code "5101", "5102", "5103", "5104", "5105", "5106", "5107" , "5108", "5109" or "5112" will appear. 5.During 3-minute antirestart mode, preliminary errors will be displayed on the LED display. 6.A short or an open described above is not detected for 10 minutes after the compressor start, during defrost mode, or for 3 minutes after defrost mode.
- 5113Error codeHeat Exchanger Gas (TH10b: Variable capacity unit) Distribution pipe temperature (TH10b: Constant capacity unit)
- 5115Error codeShell bottom temperature sensor (TH15) error (outdoor unit): When a short (high temperature intake) or an open (low temperature intake) of the thermistor is detected (the first detection), the outdoor unit stops, turns to anti-restart mode for 3 minutes, and restarts when the detected temperature of the thermistor. When a short or an open is detected again (the second detection) after the first restart of the outdoor unit, the outdoor unit stops, turns to anti-restart mode for 3 minutes, and restarts in 3 minutes when the detected temperature is within
- 5120Error codeDCL temperature sensor circuit fault (Detail code 01)(outdoor unit): When an open phase or a short circuit of the temperature sensor is detected immediately before inverter startup or during operation (applicable to INV37YC and INV39C)
- 5201Error codeHigh-pressure sensor fault (63HS1): If the high pressure sensor detects 0.098MPa [14psi] or less during the operation, the outdoor unit stops once, turns to antirestart mode for 3 minutes, and restarts after 3 minutes when the detected high pressure sensor is 0.098MPa [14psi] or more. If the high pressure sensor detects 0.098MPa [14psi] or less just before the restart, the outdoor unit makes an error stop, and the error code "5201" will appear. During 3-minute antirestart mode, preliminary errors will be displayed on the LED di
- 5203Error codeIntermediabnormality ate sensor Pressure: (0.098MPa) or less immediately before starting, error stop is commenced displaying “5201”, or “5203”.
- 5301Error codeACCT sensor fault (Detail code 115): When the formula "output current < 2 Arms" remains satisfied for 10 seconds while the inverter is in operation. | ACCT sensor fault (Detail code 115): When the formula "output current < 1.5 Arms" remains satisfied for 10 seconds while the inverter is in operation. | (P168 model only) DCCT sensor fault (Detail code116): When the bus current less than 18 Apeak is detected at startup (6Hz) | ACCT sensor circuit fault (Detail code 117): When an error value is detected with the ACCT detection circuit just before the inverter starts | (P168 model only) DCCT sensor circuit fault (Detail code118): When an error value is detected with the DCCT detection circuit just before the inverter starts | Open-circuited IPM/Loose ACCT connector (Detail code 119): Presence of enough current cannot be detected during the self-diagnostic operation immediately before inverter startup. | Faulty ACCT wiring (Detail code 120): Presence of target current cannot be detected during the self-diagnostic operation immediately before startup. (Detection of improperly mounted ACCT sensor) | Faulty ACCT wiring (Detail code 120): Presence of target current cannot be detected during the self-diagnostic operation immediately before startup.
- 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
- 5306Error codePosition detection error at startup (Detail code 132): When a motor sensor has detected an error within 10 seconds after the fan motor has gone into operation. | Position detection error during operation (Detail code 133): An error from a motor sensor is detected during fan moter operation. | RPM error before start up (Detail code 134): The fan RPM will not drop to the set RPM.
- 5401Error codeHumidity sensor fault: A short-circuit or an open-circuit of the humidity sensor is detected during operation.
- 5558Error codeRefrigerant sensor error/sensor kit error: If the indoor unit refrigerant sensor or sensor kit has an error.
- 5701Error code7 1. Error code definition Loose float switch connector: Detection of the disconnected float switch (open-phase condition) during operation
- 6201Error codeRemote controller board fault (nonvolatile memory error): This error is detected when the data cannot be read out from the built-in nonvolatile memory on the remote controller.
- 6202Error codeRemote controller board fault (clock IC error): This error is detected when the built-in clock on the remote controller is not properly functioning.
- 6500Error codeIndoor unit cleaning operation error: This error is detected when the indoor units are operated in the mode different from the one determined by the outdoor unit during refrigerant oil recovery operation.
- 6600Error codeMultiple address error Transmission from units with the same address is detected. Note) The address/attribute shown on remote controller indicates the controller which has detected error.
- 6601Error codePolarity setting error: The error detected when transmission processor cannot distinguish the polarities of the M-NET transmission line. Detail code 001: Detection of polarity setting error in centralized control system Detail code 002: Detection of polarity setting error in indoor unit system
- 6602Error codeTransmission processor hardware error: Although "0" was surely transmitted by the transmission processor, "1" is displayed on the transmission line. Detail code 001: Transmission processor hardware error in centralized control system Detail code 002: Transmission processor hardware error in indoor unit system The address/attribute appeared on the display on the remote controller indicates the controller where an error occurred.
- 6603Error codeTransmission line bus busy error: Generated error when the command cannot be transmitted for 4-10 minutes in a row due to bus-busy Generated error when the command cannot be transmitted to the transmission line for 4-10 minutes in a row due to noise Detail code 001: Transmission Bus-Busy error in centralized control system Detail code 002: Transmission Bus-Busy error in indoor unit system The address/attribute appeared on the display on the remote controller indicates the controller where an error occurred.
- 6606Error codeCommunication error between device processor and transmission processor or M-NET processor: Communication error between device processor on circuit board and transmission processor or M-NET processor Detail code 003: Communication error between device processor on circuit board and M-NET processor The address/attribute appeared on the display on the remote controller indicates the controller where an error occurred.
- 6607Error codeNo System Generating compounit sition Outdoor 1 unit system BC 2 controller (BC) refrigerant Single Indoor 3 unit (1) Remote 4 controller (RC): ACK error When transmission Note: Display of Detecting address trouble method Remote No reply 1) (OC) controller (ACK) at 2) (RC) BC transmission to OC 3) 4) Remote No reply 1) controller (ACK) at IC (RC) transmis2) sion to BC 3) 4) Remote No reply 1) (IC) controller (ACK) at (RC) RC 2) transmission to IC 3) 4) 5) Remote No reply 1) controller (ACK) at IC 2) (RC) transmis3) sion to RC 4) | No (continued) System Generating compounit sition 1 2 3 refrigerants plural using system operation Group 4 (2): ACK error When interval Display of Detecting address trouble method Outdoor Remote No reply As unit (OC) control- (ACK) at ler (RC) BC transmission to OC BC Remote No replay As controller control- (ACK) at IC (BC) ler (RC) transmission to BC Indoor Remote No reply 1) unit (IC) control- (ACK) at ler (RC) RC 2) transmission to IC 3) 4) 5) For ed ed. Remote Remote No reply 1) controller control- (ACK) at IC (RC) ler (RC) transmis2) sion to RC 3) 4) 5) At once, | No (continued) System Generating compounit sition Outdoor 1 unit BC 2 controller (BC) Indoor 3 unit (MELANS) controller system with system Remote 4 controller Connecting (RC) (3): ACK error When interval Note: Display of Detecting address trouble method Remote No reply As (OC) controller (ACK) at (RC) BC transmission to OC Remote No reply Same controller (ACK) at frigerants. (RC) RC t
- 6608Error codeNo response error: When no response command is returned although acknowledgement (ACK) is received after transmission, an error is detected. When the data is transmitted 10 times in a row with 3 seconds interval, an error is detected on the transmission side. The address/attribute appeared on the display on the remote controller indicates the controller where an error occurred.
- 6810Error codeUR communication error (UR: unit remote controller) The communication between the unit remote controller and the indoor unit does not work properly. (1) The address and the attribute for the remote controller are not displayed. [Detect by the unit remote controller] 1) An error is detected when the remote controller send "H", the unit remote controller detects "L" reception for the third time in the low. 2) An error is detected when the indoor unit sends no response for the demand of the "Monito
- 6815Error codeSupervisor remote controller communication error: If an error is detected in communication with the MA remote controller set as the supervisor remote controller.
- 6831Error codeMA controller signal reception error (No signal reception): Communication between the MA remote controller and the indoor unit is not done properly. No proper data has been received for 3 minutes.
- 6832Error codeMA remote controller signal transmission error (Synchronization error): MA remote controller and the indoor unit is not done properly. Failure to detect opening in the transmission path and unable to send signals ∗Indoor unit: 3 minutes ∗Remote controller: 6 seconds
- 6833Error codeMA remote controller signal transmission error (Hardware error): Communication between the MA remote controller and the indoor unit is not done properly. An error occurs when the transmitted data and the received data differ for 30 times in a row.
- 6834Error codeMA remote controller signal reception error (Start bit detection error): Communication between the MA remote controller and the indoor unit is not done properly. No proper data has been received for 2 minutes.
- 6840Error codeA control communication reception error: Indoor/outdoor unit communication error (Signal receiving error) Abnormal if indoor controller board could not receive any signal normally for 6 minutes after turning the power on Abnormal if indoor controller board could not receive any signal normally for 3 minutes. Consider the unit as abnormal under the following condition. When 2 or more indoor units are connected to an outdoor unit, indoor controller board could not receive a signal for 3 minutes from outdoor controller circuit board, a
- 6841Error codeUsing 1. Error code definition A control communication synchronism not recover Troubleshooting: Indoor/outdoor unit communication error (Outdoor unit) Abnormal if "0" receiving is detected 30 times continuously though outdoor controller circuit board has transmitted "1". Abnormal if outdoor controller circuit board could not find blank of transmission path for 3 minutes.
- 6842Error codeA control communication transmission/reception hardware trouble: Indoor/outdoor unit communication error (Transmitting error) Abnormal if "1" receiving is detected 30 times continuously though indoor controller board has transmitted "0".
- 6843Error codeA control communication start bit detection error: Indoor/outdoor unit communication error (Signal receiving error) Abnormal if indoor controller board could not receive any signal normally for 6 minutes after turning the power on. Abnormal if indoor controller board could not receive any signal normally for 3 minutes. Consider the unit as abnormal under the following condition. When 2 or more indoor units are connected to an outdoor unit, indoor controller board could not receive a signal for 3 minutes from outdoor controller circuit board