Mitsubishi Electric PFD/PQHY 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 codeAbnormal discharge air temperature: 1.If the discharge temperature of 120°C or more is detected during the above operation (the first detection), the outdoor unit stops once, turns to anti-restart mode for 20 seconds, and restarts after 20 seconds automatically. 2.If the discharge temperature of 120°C 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 20-second restart mode, then the outdoor unit will restart in 20 seconds. 3.If
- 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 codeAbnormal high pressure 1 (outdoor unit) Abnormal high pressure 2 (outdoor unit): 1. If the pressure of 3.87MPa or higher is detected by the pressure sensor during operation (the first detection), the outdoor stops once, turns to anti-restart mode for 20 seconds, and restarts after 20 seconds automatically. 2. If the pressure of 3.87MPa or higher is detected by the pressure sensor again (the second detection) within 30 minutes after the first stop of the outdoor unit, the outdoor unit stops once, turns to anti-restart mode for 20 seconds, and restarts after 20 seconds automat
- 1500Error codeRefrigerant overcharge: An error can be detected by the discharge temperature superheat. 1.If the discharge SH 10K or less is detected during operation (the first detection), the outdoor unit stops at once, turns to anti-restart mode for 20 seconds, and restarts after 20 seconds automatically. 2.If the discharge SH 10K or less is detected again within 30 minutes after first stop of the outdoor unit (the second detection), the outdoor unit will make an error stop, and the error code "1500" is displayed. 3.If discharge S
- 2503Error codeFloat switch trip: When the float switch trips during operation, and when an open is detected (cannot be detected during OFF). Open : detectable at -40°C or lower
- 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).
- 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 sync signal abnormality: The frequency cannot be determined when the power is switched on.
- 4220Error codeBus voltage: If Vdc 289V or less is de- (1) | Logic error: If only the H/W error logic
- 4225Error codedrop (Detail code 108) Bus voltage rise (Detail code 109) Abnormal VDC (Detail code 110): tected during Inverter operation. (S/W detection) (2) (3) (4) (5) If Vdc 817V or more is (1) detected during inverter operation. (2) Bus voltage abnormality If Vdc Same 772V or more or Vdc 308V or and less is detected. (H/W detection) | (Detail code No.111): circuit operates, and no identifiable error is detected.
- 4230Error codeHeatsink over-: In the case of 4230
- 4235Error codeIn the case of 4235 When the heat sink temperature (THHS5) 85°C or higher is detected.
- 4240Error codeOverload pro-: When the greater output
- 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 codeIPM error: When an error signal of
- 4255Error code(Detail code 101) ACCT overcurrent breaker trip (Detail code 102) DCCT overcurrent breaker trip (Detail code 103) Overcurrent breaker trip (Detail code 106,107) IPM short/ grounding fault (Detail code 104) Overcurrent error due to short-circuited motor (Detail code105): IPM is detected
- 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 codeAir inlet: If a short or an open is | Discharge (TH11,TH12): 1.When a short (high temperature intake) or
- 5102Error codeLiquid pipe: detected during thermostat ON, the outdoor unit
- 5103Error codeGas pipe: turns to anti-restart mode for 3 minutes. When the
- 5104Error codeAir outlet: 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 turns on.
- 5105Error codePiping (TH5): an open (low temperature intake) of the thermistor is detected (the
- 5106Error codeOutdoor air temperature (TH6): first detection), the outdoor unit stops
- 5107Error codeSC coil outlet (TH7): turns to anti-restart mode for 3 minutes, and restarts when the detected temperature of the thermistor.
- 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 (outdoor unit): 1.If the high pressure sensor detects 0.098MPa or less during the operation, the outdoor unit stops once, turns to anti-restart mode for 20 seconds, and restarts after 20 seconds when the detected high pressure sensor is 0.098MPa or more. 2.If the high pressure sensor detects 0.098MPa or less just before the restart, the outdoor unit makes an error stop, and the error code "5201" will appear. 3.During 3-minute antirestart mode, preliminary errors will be displayed on the LED display. 4.A error i
- 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 ware error Although mitted by cessor, transmission Note: The appeared on troller troller occurs.: processor hard- (1) When mission data "0" was surely transed. the transmission pro- (2) Grounding "1" is displayed on the (3) The line. tor (CN40) (4) Controller address/attribute (5) When on the display line the main remote con- (6) Voltage indicates the conCheck method where an error Single-outdoor-unit Investigation transmission
- 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 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. Note: The address/attribute appeared on the display on the main remote controller indicates the controller where an error occurs.
- 6831Error codeMA communication error or no reception error
- 6832Error codeMA communication error or synchronization recovery error Communication between the MA remote controller and the
- 6833Error codeindoor 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 MA communication error or transmission/reception H/W 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 codeCommunication between the MA remote controller and the indoor unit is not done properly. No proper data has been received for 3 minutes. MA communication error or 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
- 7116Error codeOutdoor unit Replace Multi setting error The refrigerant pipe has not been washed.
- 7117Error codeOutdoor unit Model setting error