Mitsubishi Electric PUY/PUZ 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.
- 1300Error codeLow pressure (63L operated) Abnormal if 63L is operated (under0.03MPa) during compressor operation. 63L: Low-pressure switch (A42N only)
- 1302Error codeHigh pressure (High-pressure switch 63H operated) Abnormal if high-pressure switch 63H operated ( ) during compressor operation. w 4.15 MPa [602PSIG] w 63H: High-pressure switch
- 4100Error codeCompressor overcurrent interruption (When compressor locked) Abnormal if overcurrent of DC bus or compressor is detected within 30 seconds after compressor starts operating.
- 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 codeOvervoltage or voltage shortage and synchronous signal to main circuit Abnormal if any of followings are detected during compressor operation; • Abnormal power synchronous (zero c
- 4230Error codeThermistors Symbol Name TH3 Thermistor <Outdoor Thermistor <Outdoor TH6 TH7 Thermistor <Outdoor> Thermistor <Heatsink> TH8 Temperature of heatsink Abnormal if heatsink thermistor (TH8) detects temperature indicated below. ·············84:, A12, 18, 42N 183˚F ·············81:, A24, 30, 36N 177˚F
- 4250Error codePower module Check abnormality by driving power module in case overcurrent is detected. (UF or UP error condition)
- 4400Error codeOutdoor fan motor Abnormal if the rotational frequency of fan motor is not detected during DC fan motor operation. Fan motor rotational frequency is abnormal if; • 100 rpm or below detected continuously 20:[68˚F] for 15 seconds at or more outside air temperature • 50 rpm or below or 1500 rpm or more detected continuously for 1 minute. | Outdoor fan motor Abnormal if the rotational frequency of fan motor is not detected during DC fan motor 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.
- 5201Error code63H connector open Abnormal if 63H connector circuit is open for 3 minutes continuously after power supply. 63H: High-pressure switch
- 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.) w This error is ignored in case of test run mode. • It’s abnormal for 38A the input current or 10 seconds continuous 34A or more.
- 6600Error codeerror> Abnormal point 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.
- 6602Error codeHardware error of transmission processor Transmission processor intended to transmit “0”, but “1” appeared on transmission wire. Note) The address and attribute display at remote controller indicate the controller that detected abnormality.
- 6603Error codeBUS BUSY 1. Overtime error by collision damage Abnormal if transmitting signal 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 codeNO ACK signal 1. Transmitting side controller detects abnormal if a massage was transmitted but there is no reply (ACK) that a message was received. Transmitting side detects abnormality every 30 seconds, 6 times continuously. Note) The address and attribute displayed at remote controller is indicate the controller that did not reply (ACK). 2. If displayed address or attribute is remote controller, Indoor unit detects abnormality when indoor unit transmitted to remote controller and there was no reply (ACK). 5. If displayed address or attribute is FRESH MASTER, Indoor unit detects abnormality when indoor unit transmitted to FRESH MASTER and there was no reply (ACK). 6. If displayed address or attribute is LOSSNAY, Indoor unit detects abnormality when indoor unit transmitted to LOSSNAY and there was no reply (ACK). 7. If displayed a
- 6608Error code11-5. TROUBLESHOOTING Phenomena 1. Remote controller display work. 2. “PLEASE WAIT” display on the remote controller. 3. Transmitting side detects every 30 seconds, 6 times address and attribute displayed remote controller indicate the conthat did not reply (ACK). 3 4 OF PROBLEMS does not DC12V is not supplied 1 (Power supply display DC12~15V is supplied 2 no display is indicated. • “PLEASE WAIT” is • “PLEASE WAIT” is is remained At longest 2 minutes 1 WAIT” is displayed 2 Communication error and indoor unit 3 C
- 6840Error codeIndoor/outdoor unit communication error (Signal receiving error) Abnormal if indoor controller board could 1 not receive any signal normally for 6 minutes after turning the power on. 2 Abnormal if indoor controller board could not receive any signal normally for 3 minutes. Consider the unit as abnormal under 3 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 boar | Indoor/outdoor unit communication error (Signal receiving error) (Outdoor unit) (1) Abnormal if outdoor controller circuit board could not receive anything normally for 3 minutes.
- 6841Error codeIndoor/outdoor unit communication error (Transmitting error) (Outdoor unit) (1) Abnormal if “0” receiving is detected 30 times continuously though outdoor controller circuit board has transmitted “1”. (2) Abnormal if outdoor controller circuit board could not find blank of transmission path for 3 minutes.
- 6844Error codeIndoor/outdoor unit connector miswiring, excessive number of units 1. Abnormal if the number cannot be checked automatically due to miswiring of indoor/outdoor unit connecting wire and etc. after power is turned on for 4 minutes. 2. Abnormal if outdoor controller circuit board recognizes excessive number of indoor units.
- 6845Error codeAbnormal if the indoor unit number cannot be set within 4 minutes after power on because of miswiring (converse wiring or disconnection) of indoor/outdoor unit connecting wire.
- 6846Error codeStart-up time over The unit cannot finish start-up process within 4 minutes after power on.
- A0Error codeerror> Abnormal point 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.
- A2Error codeHardware error of transmission processor Transmission processor intended to transmit “0”, but “1” appeared on transmission wire. Note) The address and attribute display at remote controller indicate the controller that detected abnormality.
- A3Error codeBUS BUSY 1. Overtime error by collision damage Abnormal if transmitting signal 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.
- A6Error 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.
- A7Error codeNO ACK signal 1. Transmitting side controller detects abnormal if a massage was transmitted but there is no reply (ACK) that a message was received. Transmitting side detects abnormality every 30 seconds, 6 times continuously. Note) The address and attribute displayed at remote controller is indicate the controller that did not reply (ACK). 2. If displayed address or attribute is remote controller, Indoor unit detects abnormality when indoor unit transmitted to remote controller and there was no reply (ACK). 5. If displayed address or attribute is FRESH MASTER, Indoor unit detects abnormality when indoor unit transmitted to FRESH MASTER and there was no reply (ACK). 6. If displayed address or attribute is LOSSNAY, Indoor unit detects abnormality when indoor unit transmitted to LOSSNAY and there was no reply (ACK). 7. If displayed a
- A8Error code11-5. TROUBLESHOOTING Phenomena 1. Remote controller display work. 2. “PLEASE WAIT” display on the remote controller. 3. Transmitting side detects every 30 seconds, 6 times address and attribute displayed remote controller indicate the conthat did not reply (ACK). 3 4 OF PROBLEMS does not DC12V is not supplied 1 (Power supply display DC12~15V is supplied 2 no display is indicated. • “PLEASE WAIT” is • “PLEASE WAIT” is is remained At longest 2 minutes 1 WAIT” is displayed 2 Communication error and indoor unit 3 C
- E0Error codeRemote controller transmission error (E0)/signal receiving error (E4) Abnormal if main or sub remote control1 ler cannot receive normally any transmission from indoor unit of refrigerant address “0” for 3 minutes. (Error code : E0) Abnormal if sub-remote controller could 2 not receive for any signal for 2 minutes. (Error code: E0) 1 Abnormal if indoor controller board can not receive any data normally from remote controller board or from other
- E1Error codeRemote controller control board Abnormal if data cannot be normally 1 read from the nonvolatile memory of the remote controller control board. (Error code: E1)
- E3Error codeRemote controller transmission error (E3)/ signal receiving error (E5) Abnormal if remote controller could not 1 find blank of transmission path for 6 seconds and could not transmit. (Error code: E3) 2 Remote controller receives transmitted data at the same time, compares the data, and when detecting it, judges different data to be abnormal 30 continuous times. (Error code: E3)
- E4Error codenot receive any data normally from remote controller board or from other indoor controller board for 3 minutes. (Error code: E4) 2 Indoor controller board cannot receive any signal from remote controller for 2 minutes. (Error code: E4)
- E5Error codecontinuous times. (Error code: E3) 1 Abnormal if indoor controller board could not find blank of transmission path. (Error code: E5) Indoor controller board receives trans2 mitted data at the same time, compares the data, and when detecting it, judges different data to be abnormal 30 continuous times. (Error code: E5)
- E6Error codeIndoor/outdoor unit communication error (Signal receiving error) Abnormal if indoor controller board could 1 not receive any signal normally for 6 minutes after turning the power on. 2 Abnormal if indoor controller board could not receive any signal normally for 3 minutes. Consider the unit as abnormal under 3 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 boar
- E8Error codeIndoor/outdoor unit communication error (Signal receiving error) (Outdoor unit) (1) Abnormal if outdoor controller circuit board could not receive anything normally for 3 minutes.
- E9Error codeIndoor/outdoor unit communication error (Transmitting error) (Outdoor unit) (1) Abnormal if “0” receiving is detected 30 times continuously though outdoor controller circuit board has transmitted “1”. (2) Abnormal if outdoor controller circuit board could not find blank of transmission path for 3 minutes.
- EAError codeIndoor/outdoor unit connector miswiring, excessive number of units 1. Abnormal if the number cannot be checked automatically due to miswiring of indoor/outdoor unit connecting wire and etc. after power is turned on for 4 minutes. 2. Abnormal if outdoor controller circuit board recognizes excessive number of indoor units.
- EBError codeAbnormal if the indoor unit number cannot be set within 4 minutes after power on because of miswiring (converse wiring or disconnection) of indoor/outdoor unit connecting wire.
- ECError codeStart-up time over The unit cannot finish start-up process within 4 minutes after power on.
- EDError 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.
- EFError code(6607 6608): Non defined error code This code is displayed when non defined error code is received.
- F3Error code— 63L connector open Abnormal if 63L connector circuit is open for 3 minutes continuously after power supply. 63L: Low-pressure switch <A42N only>
- F5Error code63H connector open Abnormal if 63H connector circuit is open for 3 minutes continuously after power supply. 63H: High-pressure switch
- F9Error 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>
- P8Error code<M-NET communication Error Code: Pipe temperature <Cooling mode> Detected as abnormal when the pipe temperature is not in the cooling range 3 minutes after compressor start and 6 minutes after the liquid or condenser/evaporator pipe is out of cooling range. Note 1) It takes at least 9 min. to detect. Note 2) Abnormality P8 is not detected in drying mode.
- U1Error codeHigh pressure (High-pressure switch 63H operated) Abnormal if high-pressure switch 63H operated ( ) during compressor operation. w 4.15 MPa [602PSIG] w 63H: High-pressure switch
- U2Error code(TH4: 1102) (TH32: 1132): High discharging temperature High comp.shell temperature (1) Abnormal if discharge temperature 125:[257˚F] thermistor (TH4) exceeds 110: or [230˚F] continuously for 5 minutes. Abnormal if condenser/evaporator tem40: perature thermistor (TH5) exceeds [104˚F] during defrosting and discharge temperature thermistor (TH4) exceeds 110: [230˚F]. (2) Abnormal if discharge superheat (Cooling: TH4 – TH5 / Heating: TH4 – TH6) increases. All the conditions in A or B are detected simultaneously for 10 minute
- U3Error code(Detection is inoperative for 10 minutes of compressor starting process and for 10 minutes after and during defrosting.)