Mitsubishi Electric 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. Freezing/overheating protection is working Overheating protection <Heating mode> Abnormal if condensing temperature of 63HS detects Tcond. ˚F [:] or more and compressor operation frequency is less than or equal to 25 Hz. Detection is inoperative
- 1102Error codeHigh discharging temperature (1) Abnormal if TH4 exceeds 257˚F [125:] or 230˚F [110:] continuously for 5 minutes. Abnormal if TH4 exceeds 230˚F [110:] or more continuously for 30 seconds after 90 seconds have passed since the defrosting operation started. (2) Abnormal if discharge superheat (Cooling: TH4−T63HS / Heating: TH4−T63HS) exceeds 126˚F [70:] continuously for 10 minutes. TH4: Thermistor <Discharge> High comp. surface temperature Abnormal if TH34 exceeds 257˚F [125:]. In the case of high
- 1300Error codeLow pressure Abnormal if the following conditions are detected for continuously 3 minutes after compressor starts heating operating for 10 minutes. 1. Heating mode Detection mode 1 TH7−TH3 4°C and [ TH5−Indoor room temperature 2°C [ Detection mode 2 TH7−TH3 2°C and [ TH5−Indoor room temperature [ 4°C and TH2−Indoor room temperature 4°C [ Detection mode 3 TH7−TH3 [ 4°C and TH5−Indoor room temperature 2°C [ and TH4−TH5 ] 20°C 2. Cooling mode TH6−TH7 2°C and [ TH3−TH7 [ 2°C and Indoor room temperat
- 1302Error code63H worked) Abnormal if high-pressure switch 63H worked (*) during compressor operation. *4.15 MPa [602PSIG] 63H: High-pressure switch | Abnormal pressure of 63HS Abnormal if 63HS detects 14.5 PSIG [0.1 MPa] or less. Detection is inoperative for 3 minutes after compressor starting and 3 minutes after and during defrosting. 63HS: High pressure sensor
- 1502Error codetemperature Abnormal if discharge superheat is continuously detected less than or equal to 5˚F [−15˚C] for 3 minutes even though linear expansion valve has minimum open pulse after compressor starts operating for 10 minutes.
- 1504Error code(UD)*: Over heat protection Abnormal if outdoor pipe thermistor (TH3) detects 70: or more during compressor operation.
- 1520Error codeToo low superheat due to low discharge temperature Abnormal if discharge superheat is continuously detected less than or equal to 5˚F[−15˚C] for 3 minutes even though linear expansion valve has minimum open pulse after compressor starts operating for 10 minutes.
- 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
- 4210Error codeCompressor overcurrent interruption Abnormal if overcurrent DC bus or compressor is detected after compressor starts operating for 30 seconds.
- 4220Error code01 02 04 08 | Detailed Undervoltage/Overcurrent) codes PFC detected any of the following: a) Increase of DC bus voltage to 430 V. c) Increase in input current 10 to 50 A peak.
- 4230Parameter(PAC-SK52ST) (Refer to "10-10. FUNCTION OF SWITCHES, CONNECTORS AND JUMPERS".) Thermistors Symbol Name T
- 4250Error codePower module Check abnormality by driving power module in case overcurrent is detected. (UF or UP error condition)
- 4400Error codeDetailed: The outdoor fan motor is considered to be abnormal if the rotational frequency of fan motor is abnormal when detected during operation. Fan motor rotational frequency is abnormal if; • 100 rpm or below detected continuously for 15 seconds at 68˚F [20:] or more outside air temperature • 50 rpm or below or 1500 rpm or more detected continuously for 1 minute. To find out the detail history (latest) codes Refer to "10-10. FUNCTION OF SWITCHES, Overvoltage error • Increase in DC bus voltage to 400 V
- 5104Error code
- 5201Error code63H connector Abnormal 3 minutes 63H: High
- 5202Error code— 63L connector open Abnormal if 63L connector circuit is open for 3 minutes continuously after power supply. 63L: Low pressure switch
- 5300Error codeCurrent sensor error • It is abnormal for 38A the input current or 10 seconds continuous 34A or more.
- 6600Error codeerror> Abnormal points 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 to 10 minutes continuously because of collision of transmission. 2. Data could not reach transmission wire for 8 to 10 minutes continuously because of noise, 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 Transmitting side controller detects abnormal if a message 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 indicate the controller that did not reply (ACK). If displayed address or attribute is outdoor unit, indoor unit detects abnormality when indoor unit transmits signal to outdoor unit and there was no reply (ACK). | 4. If displayed address or attribute is remote controller, indoor unit detects abnormality when indoor unit transmits signal 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 transmits signal to FRESH MASTER and there was no reply (ACK). 6. If displayed address or attribute is LOSSNAY, indoor unit detects abnormality when indoor unit transmits signal to LOSSNAY and there was no reply (ACK). 7.
- 6608Error code10-5. TROUBLESHOOTING 1. Remote controller work. 2. “PLEASE on the remote 3. When pressing operation display is turned off: M-NET NO RESPONSE Abnormal if a message was there were reply (ACK) that received, but response command return. Transmitting side detects every 30 seconds, 6 times Note: The address and attribute remote controller indicate ler that did not reply Phenomena display does not WAIT” display is remained controller. the remote controller switch, the OPERATION appeared but it will be soon. the wireless 1 The no beep is heard controller not start operating. is indicated on the wireless 1 No operation beep
- 6840Error codeIndoor/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 s | Indoor/outdoor unit communication error (Signal receiving error) (Outdoor unit) 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
- 6844Error codeIndoor/outdoor unit connector miswiring, excessive number of units (4 units or more) 1. Abnormal if the number cannot be checked automatically due to miswiring of indoor/outdoor unit connecting wire, etc. after power is turned on for 4 minutes. 2. Abnormal if outdoor controller circuit board recognizes the number of connected indoor units as “4 units or more”.
- 6845Error codeAbnormal if the indoor unit number can not be set within 4 minutes after power on because of miswiring (reversed wiring or disconnection) of indoor/outdoor unit connecting wire.
- 6846Error codeStartup time over The unit cannot finish Startup process within 4 minutes after power on.
- A0Error codeerror> Abnormal points 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 to 10 minutes continuously because of collision of transmission. 2. Data could not reach transmission wire for 8 to 10 minutes continuously because of noise, 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 Transmitting side controller detects abnormal if a message 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 indicate the controller that did not reply (ACK). If displayed address or attribute is outdoor unit, indoor unit detects abnormality when indoor unit transmits signal to outdoor unit and there was no reply (ACK). | 4. If displayed address or attribute is remote controller, indoor unit detects abnormality when indoor unit transmits signal 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 transmits signal to FRESH MASTER and there was no reply (ACK). 6. If displayed address or attribute is LOSSNAY, indoor unit detects abnormality when indoor unit transmits signal to LOSSNAY and there was no reply (ACK). 7.
- A8Error code10-5. TROUBLESHOOTING 1. Remote controller work. 2. “PLEASE on the remote 3. When pressing operation display is turned off: M-NET NO RESPONSE Abnormal if a message was there were reply (ACK) that received, but response command return. Transmitting side detects every 30 seconds, 6 times Note: The address and attribute remote controller indicate ler that did not reply Phenomena display does not WAIT” display is remained controller. the remote controller switch, the OPERATION appeared but it will be soon. the wireless 1 The no beep is heard controller not start operating. is indicated on the wireless 1 No operation beep
- E0Error codeRemote controller transmission error (E0)/signal receiving error (E4) 1 Abnormal if main or sub remote controller cannot receive normally any transmission from indoor unit of refrigerant address “0” for 3 minutes.
- E1Error codeIndoor controller board cannot receive 2 any signal from remote controller for 2 minutes. (Check code: E4) Remote controller control board Abnormal if data cannot be normally 1 read from the nonvolatile memory of the
- 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.
- E4Error codeIndoor controller board cannot receive any signal from remote controller for 2 minutes.
- E5Error code(6201, 6203): different data to be abnormal 30 continuous times. (Check code: E3) 1 Abnormal if indoor controller board could not find blank of transmission path. (Check code: E5) Indoor controller board receives 2 transmitted data at the same time, compares the data, and when detecting it, judges different data to be abnormal 30 continuous times. (Check code: E5)
- E6Error codeIndoor/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 s
- E7Error codeIndoor/outdoor unit communication error (Transmitting error) Abnormal if “1” receiving is detected 30 times continuously though indoor controller board has transmitted “0”.
- E8Error codeIndoor/outdoor unit communication error (Signal receiving error) (Outdoor unit) 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
- EAError codeIndoor/outdoor unit connector miswiring, excessive number of units (4 units or more) 1. Abnormal if the number cannot be checked automatically due to miswiring of indoor/outdoor unit connecting wire, etc. after power is turned on for 4 minutes. 2. Abnormal if outdoor controller circuit board recognizes the number of connected indoor units as “4 units or more”.
- EBError codeAbnormal if the indoor unit number can not be set within 4 minutes after power on because of miswiring (reversed wiring or disconnection) of indoor/outdoor unit connecting wire.
- ECError codeStartup time over The unit cannot finish Startup 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. Freezing/overheating protection is working Overheating protection <Heating mode> Abnormal if condensing temperature of 63HS detects Tcond. ˚F [:] or more and compressor operation frequency is less than or equal to 25 Hz. Detection is inoperative
- EEError codeAbnormal if a connection of indoor unit and outdoor unit which uses different refrigerant is detected.
- EFError code(6607 6608): Non defined error code This code is displayed when non defined error code is received.