Mitsubishi Electric PUHY/PURY error codes
Codes
- 0403Error codeSerial communication error: Serial communication error between the control board and the INV board on the compressor, and between the control board and the Fan board Detail code 01: Between the control board and the INV board Detail code 05: Between the control board and the Fan board
- 1102Error codeDischarge temperature fault: 1) If the discharge temperature of 120 °C [248°F] or more is detected during the above operation (the first detection), the outdoor unit stops once, turns to anti-restart mode for 3 minutes, and restarts after 3 minutes automatically. 2) If the discharge temperature of 120° C [248°F] or more is detected again (the second detection) within 30 minutes after the second stop of the outdoor unit described above, the mode will be changed to 3 - minute restart mode, then the outdoor unit will restart i
- 1301Error codeLow pressure fault: When starting the compressor from Stop Mode for the first time if low pressure reads 0.098MPa [14psi] immediately before start-up, the operation immediately stops.
- 1302Error codeHigh pressure fault 1 (Outdoor unit): 1) If the pressure of 3.78MPa [548psi] or higher is detected by the pressure sensor during operation (the first detection), the outdoor stops once, turns to antirestart mode for 3 minutes, and restarts after 3 minutes automatically.
- 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 3-minute restart mode, and starts up in three minutes. 2) If the formula "TdSH 10°C [18°F]" is satisfied again within 30 minutes of the fifth stoppage of the outdoor unit (sixth detection), the unit comes to an abnormal stop, and the error code "1500" appears. 3) If the formula "TdSH 10°C [18°F]" is satisfied
- 2500Error codeDrain sensor submergence (Models with a drain sensor): 1) If an immersion of the drain sensor in the water is detected while the unit is in any mode other than the Cool/Dry mode and when the drain pump goes from OFF to ON, this condition is considered preliminary water leakage. While this error is being detected, humidifier output cannot be turned on. 2) If the immersion of the sensor in the water is detected four consecutive times at an hour interval, this is considered water leakage, and "2500" appears on the monitor. 3) Detection of water leakage | Drain sensor submergence (Models with a float switch): 1) If an immersion of the float switch in the water is detected while the unit is in any mode other than the Cool/Dry mode and when the drain pump goes from OFF to ON, this condition is considered preliminary water leakage. While this error is being detected, humidifier output cannot be turned on. 2) If the drain pump turns on within one hour after preliminary water leakage is detected and the above-mentioned condition is detected two consecutive times, water leakage error water leakage is detec
- 2502Error codeDrain pump fault (Models with a drain sensor): 1) Make the drain sensor thermistor self-heat. If the temperature rise is small, it is interpreted that the sensor is immersed in water. This condition is considered to be a preliminary error, and the unit goes into the 3-minute restart delay mode. 2) If another episode of the above condition is detected during the preliminary error, this is considered a drain pump error, and "2502" appears on the monitor. 3) This error is always detected while the drain pump is in operation. 4) The following cr | Drain pump fault (Models with a float switch): 1) The immersion of sensor tip in water is detected by the ON/OFF signal from the float switch. ∗Submergence of the sensor When it is detected that the float switch has been ON for 15 seconds, it is interpreted that the sensor tip is immersed in water. ∗Sensor in the air When it is detected that the float switch has been OFF for 15 seconds, it is interpreted that the sensor tip is not immersed in water. 2) If it is detected that the float switch has been ON for 3 minutes after the immersion of t
- 2503Error codeDrain sensor (Thd) fault: If the open or short circuit of the thermistor has been detected for 30 seconds, this condition is considered to be a preliminary error, and the unit goes into the 3-minute restart delay mode. If another episode of the above condition is detected during the preliminary error, this is considered a drain sensor error.(If the short or open circuit of the thermistor is no longer detected, normal operation will be restored in 3 minutes.) This error is detected when one of the following conditions
- 2600Error codeWater leakage from humidifier: 1) If the float switch for detecting water leakage is submerged in the water in the humidifier's drain pan and when the drain pump goes from OFF to ON, this condition is considered a preliminary water leakage. While the preliminary water leakage error is being detected, the humidifier cannot output the on signal. The discharge valve will be closed. 2) If the drain pump turns on within one hour after preliminary water leakage is detected and the above-mentioned condition is detected two consecuti
- 2601Error codeWater supply cutoff 2. Cause, check method and remedy
- 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.
- 4106Error code<Transmission power supply fault Error detail code FF (Outdoor unit)>: Transmission power output failure
- 4115Error codePower supply signal sync error: The frequency cannot be determined when the power is switched on.
- 4116Error codeRPM error/Motor error: LOSSNAY ∗The motor keep running even if the power is OFF. ∗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.
- 4220Error codeIf Vdc 289V or less is detected during Inverter operation. (S/W detection) | If Vdc 830V is detected during inverter operation. | Bus voltage abnormality If Vdc 400V or Vdc 160V is detected. (H/W detection) | 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. | VDC error (Detail code 110): Bus voltage abnormality If Vdc 400V or Vdc 160V is detected. (H/W detection) | 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 105°C [221°F] is detected.
- 4240Error codeOverload protection: If the output current of "(Iac) >Imax (Arms)" or "THHS > 100°C [212°F] " is continuously detected for 10 minutes or more during inverter operation. Model Imax(Arms) RP200 19 RP250 - RP300 27
- 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. | ACCT overcurrent relay trip (Detail code 102) DCCT overcurrent relay trip (Detail code 103) Overcurrent relay trip (Detail code 106 and 107): RP200 model Overcurrent 95 Apeak or 22 Arms and above is detected by the current sensor. RP250 - RP300 models Overcurrent 95 Apeak or 35 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.
- 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
- 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 codeIntake air temperature sensor (TH1) fault (OA processing unit) Intake air temperature sensor (TH24) fault (All-fresh (100% outdoor air) type 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 | Discharge temperature sensor (TH4) 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.
- 5105Error codeAccumulator inlet temperature sensor (TH5) 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
- 5106Error codeHeat exchanger inlet 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 temperature sensor (TH7) 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
- 5110Error codeHeatsink 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 temperature sensor (TH11) fault (BC controller): If a shorted (high temperature intake) or open (low temperature intake) thermistor (TH11, TH12, TH15, or TH16) is detected during operation, the unit makes an error stop, and an error code "5111," "5112," "5115," or "5116" appears on the display. Detection of a shortor open-circuit as described above is suspended during the defrost cycle and for 3 minutes after the operation mode is changed.
- 5112Error codeBypass outlet temperature sensor (TH12) fault (BC controller): If a shorted (high temperature intake) or open (low temperature intake) thermistor (TH11, TH12, TH15, or TH16) is detected during operation, the unit makes an error stop, and an error code "5111," "5112," "5115," or "5116" appears on the display. Detection of a shortor open-circuit as described above is suspended during the defrost cycle and for 3 minutes after the operation mode is changed.
- 5115Error codeLEV3 outlet temperature sensor (TH15) fault (BC controller): If a shorted (high temperature intake) or open (low temperature intake) thermistor (TH11, TH12, TH15, or TH16) is detected during operation, the unit makes an error stop, and an error code "5111," "5112," "5115," or "5116" appears on the display. Detection of a shortor open-circuit as described above is suspended during the defrost cycle and for 3 minutes after the operation mode is changed.
- 5116Error codeLEV3 inlet temperature sensor (TH16) fault (BC controller): If a shorted (high temperature intake) or open (low temperature intake) thermistor (TH11, TH12, TH15, or TH16) is detected during operation, the unit makes an error stop, and an error code "5111," "5112," "5115," or "5116" appears on the display. Detection of a shortor open-circuit as described above is suspended during the defrost cycle and for 3 minutes after the operation mode is changed.
- 5201Error codeHigh-pressure sensor fault (63HS1/63HS2): If the high pressure sensor or intermediate pressure sensor detects 0.098MPa [14psi] or less during the operation, the outdoor unit stops once, turns to anti-restart mode for 3 minutes, and restarts after 3 minutes when the detected high pressure sensor or intermediate pressure sensor is 0.098MPa [14psi] or more. If the high pressure sensor or intermediate pressure sensor detects 0.098MPa [14psi] or less just before the restart, the outdoor unit makes an error stop, and the error code "5201" w | High-pressure sensor fault (Outdoor unit HPS/BC controller PS1): When a pressure sensor reading of 4.06 MPa [589 psi] or above is detected, error codes "5201" and "5203" will appear. The unit will continue its operation by using other sensors as a backup.
- 5203Error codeIntermediate pressure sensor fault (BC controller PS3): When a pressure sensor reading of 4.06 MPa [589 psi] or above is detected, error codes "5201" and "5203" will appear. The unit will continue its operation by using other sensors as a backup.
- 5301Error codeACCT sensor fault (Detail code 115): When the formula "output current < 1.5 Arms" remains satisfied for 10 seconds while the inverter is in operation. | 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 | 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)
- 5401Error codeTemperature sensor fault: A short-circuit or an open-circuit of the humidity sensor is detected during operation.
- 5701Error codeLoose 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 codeAddress overlaps: An error in which signals from more than one indoor units with the same address are received The address and attribute that appear on the remote controller indicate the controller that detected the error.
- 6601Error codePolarity setting error: The error detected when transmission processor cannot distinguish the polarities of the M-NET transmission line.
- 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 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 The address/attribute appeared on the display on the remote controller indicates the controller where an error occurred.
- 6606Error codeCommunication error between device and transmission processors: Communication error between the main microcomputer on the indoor unit board and the microcomputer for transmission The address/attribute appeared on the display on the remote controller indicates the controller where an error occurred.
- 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.