Mitsubishi Electric PFD/PUHY error codes
Codes
- 0403Error codeSerial communication error: Serial communication error between the main board and the INV board on the compressor, and between the main board and the inverter board on the fan Detail code 01: Between the main board and the compressor INV board Detail code 05: Between the main board and the FAN INV board
- 1102Error codeDischarge temperature fault: 1) If the discharge temperature sensor detects a temperature of 120° C [248°F] or higher during operation (first detection), the outdoor unit stops, goes into the 20-second restart delay mode, and automatically restarts after twenty seconds. 2) If the discharge temperature sensor detects a temperature of 120°C [248°F] or higher again (second detection) within 30 minutes of the first stoppage of the outdoor unit as described above, the outdoor unit stops again, goes into the 20-second restart mod
- 1301Error codeAbnormal low pressure: When starting the compressor from Stop Mode for the first time if lowpressure reads 0.098MPa immediately before start-up, the operation immediately stops.
- 1302Error codeHigh pressure fault 1 (Outdoor unit): 1) If the pressure sensor detects a pressure of 3.78 MPa [548 psi] or higher during operation, the outdoor unit stops, goes into the 20-second restart delay mode, and automatically restarts after 20 seconds. 2) If the pressure sensor detects a pressure of 3.78 MPa [548 psi] or higher again (second detection) within 30 minutes of the first stoppage of the outdoor unit, the outdoor unit stops, goes into the 20-second restart delay mode, and automatically restarts after 20 seconds.
- 1500Error codeRefrigerant overcharge: An error can be detected by the discharge temperature superheat. 1) If the formula "TdSH 10°C [18°F]" is satisfied during operation (first detection), the outdoor unit stops, goes into the 20second restart delay mode, and automatically restarts after 20 seconds. 2) If the formula "TdSH 10°C [18°F]" is satisfied again within 20 seconds of the first stoppage of the outdoor unit (second detection), the unit comes to an abnormal stop, and the error code "1500" appears. 3) If the formula "TdSH 10°C [
- 2503Error codeFloat switch trip: This error is detected if the float switch trips during operation and open-circuit (-40°C [-40°F] below) is detected continuously for 30 seconds. (Normal operation will be resumed in 20 seconds if open-circuit is no longer detected before the 20 seconds have elapsed.)
- 4102Error codeThe L3 phase current is outside of the specified range. The open phase of the power supply may not always be detected if a power voltage from another circuit is applied.
- 4103Error codeReverse phase/open phase: 1.The operation cannot be started because of the reserve phase of one of the power lines (L1 or L2). 2.When turning on the power, the operation cannot be started because of the open phase of one of the power lines (L1, L2 or L3).
- 4106Error code<Transmission power supply fault error detail FF (Outdoor unit)>: Transmission power output failure
- 4108Error codeOvercurrent protection: 1.First detection If 51C2 is started during the operation of No.2 compressor, the outdoor unit goes into 20-second restart mode, then the outdoor unit will start in 20 seconds. 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 outdoor u
- 4109Error codeAbnormal fan (IC): If the auxiliary relay X4 (for detecting fan abnormality) is not excited for a certain period of time, the fan makes an error stop, and the fan output turns to OFF. Set value of overcurrent circuit breaker Model, motor output Set value P250 model3.7kW 7.5A PFD P500 model5.5kW 12A
- 4115Error codePower supply signal sync error: The frequency cannot be determined when the power is switched on.
- 4220Error codeIf Vdc 289V or less is detected during Inverter operation. (S/W detection) | If Vdc 830V is detected during inverter operation. | H/W error If only the H/W error logic circuit operates, and no identifiable error is detected. | When Vdc 160 V is detected just before the inverter operation.
- 4225Error codeAbnormal bus voltage drop (Detail code 108): If Vdc 289V or less is detected during Inverter operation. (S/W detection) | Abnormal bus voltage rise (Detail code 109): If Vdc 830V is detected during inverter operation. | Logic error (Detail code 111): H/W error If only the H/W error logic circuit operates, and no identifiable error is detected. | Low bus voltage at startup (Detail code 131): When Vdc 160 V is detected just before the inverter operation.
- 4230Error codeHeatsink overheat protection: When the heat sink temperature (THHS) remains at or above 100°C [212°F] is detected.
- 4235Error codeIn the case of 4235 When the heat sink temperature (THHS5) 85°C or higher is detected.
- 4240Error codeOverload protection: If the output current of "(Iac) >Imax (Arms)" or "THHS > 95°C [203°F] " is continuously detected for 10 minutes or more during inverter operation. Model Imax(Arms) P250 model 19
- 4245Error codetection: current (Iac) than the Imax (Arms), or THHS of more than 90 °C is detected for 10 minutes in a row. Imax P250 model 27 Arms P500 model 27 Arms
- 4250Error codeIn the case of 4250 Overcurrent is detected by the overcurrent detection resistor (RSH) on the INV board. In the case of 4255 IPM error signal is detected. | Instantaneous overcurrent (Detail code 106) Overcurrent (Detail code 107): P250 model Overcurrent 94 Apeak or 22 Arms and above is detected by the current sensor. | When IPM/IGBT short damage or grounding on the load side is detected just before starting the inverter. | When a short is detected on the load side just before starting the inverter operation.
- 4255Error codeIPM error (Detail code 101): In the case of 4250 Overcurrent is detected by the overcurrent detection resistor (RSH) on the INV board. In the case of 4255 IPM error signal is detected. | Overcurrent error due to short-circuited motor (Detail code 105): When a short is detected on the load side just before starting the inverter operation.
- 4260Error codeCooling fan: When overcurrent break (94 Apeak or 35 Arms) is detected by the current sensor. When IPM short damage or grounding on the load side is detected just before starting the inverter. When a short is detected on the compressor or the fan motor just before the inverter operation. In the case of 4260
- 5101Error codeReturn air temperature sensor (TH21) fault (Indoor unit): If a shortor open-circuit of the sensor is detected during Thermo-ON, the unit goes into the 20-second restart delay mode. If normal operation is not resumed in 20 seconds, the unit will come to an abnormal stop. During heating operation During cooling operation for 3 minutes after the compressor turns on.
- 5102Error codePipe temperature sensor (TH22) fault (Indoor unit): If a shortor open-circuit of the sensor is detected during Thermo-ON, the unit goes into the 20-second restart delay mode. If normal operation is not resumed in 20 seconds, the unit will come to an abnormal stop. During heating operation During cooling operation for 3 minutes after the compressor turns on. | HIC bypass circuit outlet temperature sensor (TH2) fault (Outdoor unit): If a shorted-circuited (high temperature intake) or an open-circuited thermistor (low temperature intake) is detected (first detection), the outdoor unit stops, goes into the 20-second restart delay mode, and automatically restarts if the thermistor temperature reading is within the normal range at the end of the restart delay mode. If a shortor open-circuited thermistor is detected again (second detection) after restart, the outdoor unit stops again, goes into the 20-second restart delay mode
- 5103Error codeGas-side pipe temperature sensor (TH23) fault (Indoor unit): If a shortor open-circuit of the sensor is detected during Thermo-ON, the unit goes into the 20-second restart delay mode. If normal operation is not resumed in 20 seconds, the unit will come to an abnormal stop. During heating operation During cooling operation for 3 minutes after the compressor turns on. | Heat exchanger outlet temperature sensor (TH3) fault (Outdoor unit): If a shorted-circuited (high temperature intake) or an open-circuited thermistor (low temperature intake) is detected (first detection), the outdoor unit stops, goes into the 20-second restart delay mode, and automatically restarts if the thermistor temperature reading is within the normal range at the end of the restart delay mode. If a shortor open-circuited thermistor is detected again (second detection) after restart, the outdoor unit stops again, goes into the 20-second restart delay mode
- 5104Error codeSupply air temperature sensor fault (TH24) (Indoor unit): If a shortor open-circuit of the sensor is detected during Thermo-ON, the unit goes into the 20-second restart delay mode. If normal operation is not resumed in 20 seconds, the unit will come to an abnormal stop. During heating operation During cooling operation for 3 minutes after the compressor turns on. | Discharge temperature sensor (TH4) fault (Outdoor unit): If a shorted-circuited (high temperature intake) or an open-circuited thermistor (low temperature intake) is detected (first detection), the outdoor unit stops, goes into the 20-second restart delay mode, and automatically restarts if the thermistor temperature reading is within the normal range at the end of the restart delay mode. If a shortor open-circuited thermistor is detected again (second detection) after restart, the outdoor unit stops again, goes into the 20-second restart delay mode
- 5105Error codeAccumulator inlet temperature sensor (TH5) fault (Outdoor unit): If a shorted-circuited (high temperature intake) or an open-circuited thermistor (low temperature intake) is detected (first detection), the outdoor unit stops, goes into the 20-second restart delay mode, and automatically restarts if the thermistor temperature reading is within the normal range at the end of the restart delay mode. If a shortor open-circuited thermistor is detected again (second detection) after restart, the outdoor unit stops again, goes into the 20-second restart delay mode
- 5106Error codeHIC circuit outlet temperature sensor (TH6) fault (Outdoor unit): If a shorted-circuited (high temperature intake) or an open-circuited thermistor (low temperature intake) is detected (first detection), the outdoor unit stops, goes into the 20-second restart delay mode, and automatically restarts if the thermistor temperature reading is within the normal range at the end of the restart delay mode. If a shortor open-circuited thermistor is detected again (second detection) after restart, the outdoor unit stops again, goes into the 20-second restart delay mode
- 5107Error codeOutside temperature sensor (TH7) fault (Outdoor unit): If a shorted-circuited (high temperature intake) or an open-circuited thermistor (low temperature intake) is detected (first detection), the outdoor unit stops, goes into the 20-second restart delay mode, and automatically restarts if the thermistor temperature reading is within the normal range at the end of the restart delay mode. If a shortor open-circuited thermistor is detected again (second detection) after restart, the outdoor unit stops again, goes into the 20-second restart delay mode
- 5108Error codeSC coil bypass outlet (TH8): 2.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 the normal range. 3.When a short or an open is detected again (the third detection) after 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
- 5110Error code01: Compressor INV side Detail code No. 05: Fan INV side Error Code: When a short or an open of THHS is detected just before or during the inverter operation. Error definition and error detection method
- 5201Error codeHigh-pressure sensor fault (63HS1): If the high-pressure sensor detects a pressure of 0.098MPa [14psi] or below during operation, the outdoor unit stops, goes into the 20-second restart delay mode, and restarts if the pressure reaches above 0.098MPa [14psi] at the end of the restart delay mode. 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. When the unit is in the 20-second restart delay mode, a preliminary error
- 5301Error codeACCT sensor circuit failure (Detail code 117) DCCT sensor circuit failure (Detail code 118) ACCT sensor failure (Detail code 115) DCCT sensor failure (Detail code 116) IPM open/Disconnected ACCT connector (Detail code 119) ACCT faulty wiring detection (Detail code 120): When an error value is detected with the ACCT detection circuit just before the inverter starts When an error value is detected with the DCCT detection circuit just before the inverter starts When the effective output current between -1.5 Arms and 1.5 Arms is detected during inverter operation When the bus current less than 6.5 Apeak is detected at startup (6Hz) When IPM open damage or disconnected CNCT2 is not detected just before INV starts (Sufficient current is not detected just before start
- 6600Error codeAddress overlaps The error is detected when the same address is transmitted from different units. Note: The address/attribute appeared on the display on the main remote controller indicates the controller where an error occurs.
- 6601Error codeUnset polarity The error detected when transmission processor cannot distinguish the polarities of the M-NET transmission line. and error detection method
- 6602Error codeTransmission processor hardware error: Although "0" was surely transmitted by the transmission processor, "1" is displayed on the transmission line. The address/attribute appeared on the display on the remote controller indicates the controller where an error occurred.
- 6603Error codeTransmission circuit bus-busy 1.Error occurred when the transmission is disabled for 4-10 minutes in a row due to collision of the transmitted data. 2.Generated error when the command cannot be transmitted to the transmission line for 4-10 minutes in a row due to noise Note: The address/attribute appeared on the display on the main remote controller indicates the controller where an error occurs.
- 6606Error codeCommunication error with the transmission processor Communication error between the main microcomputer on the indoor unit board and the microcomputer for transmission Note: The address/attribute appeared on the display on the main remote controller indicates the controller where an error occurs. the main remote controller Error
- 6607Error codeNo Error Error source address Outdoor Main unit (OC) remote controller (SC) MA controller (MA) Indoor Main unit remote (IC) controller (SC) MA controller (MA): ACK abnormality The error transmission. interval, Note: Error disDetection play method - - Although mote after on door the Error definition and error detection method
- 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.
- 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 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.
- 7100Error codeOutdoor unit Total capacity error The model total of indoor units in the system with one outdoor unit exceeds limitations.
- 7101Error codeOutdoor unit Capacity code error Indoor unit The model name (capacity code) of the connected indoor unit connected is inappropriate.
- 7102Error codeOutdoor unit Error in the number of connected units The number of connected indoor units exceeds the allowable range.
- 7105Error codeOutdoor unit Address setting error Erroneous setting of OC unit address
- 7110Error codeThe indoor unit cannot be operated as the connection between indoor units in the system is not normal.
- 7111Error codeIndoor unit Remote controller senOA processing sor failure unit This error occurs when the temperature data is not sent although the remote controller sensor is specified.
- 7113Error codeOutdoor unit Model setting error Function setting error due to resistance