Mitsubishi Electric PU error codes
Codes
- 0403Error codeSerial communication error The communication between outdoor controller board and M-NET p.c. board is not available. | <M-NET communication Error Code: Serial communication error Abnormal if communication between outdoor controller circuit board and M-NET board is not available.
- 1102Error codeAbnormal high discharging temperature Abnormal if discharging temperature thermistor (TH4) exceeds following temperature during compressor operation. Normal operation: 115:(P25-P100)/ 125:(P125,P140) or more for three minutes continuously or 135: During defrosting: 135:
- 1108Error codeInner thermostat (49C) working detector Abnormal if inner thermostat (49C) works during compressor operation. 49C: inner thermostat 135I5: [PU(H)-P5, 6YGA]
- 1300Error codeAbnormal low pressure (63H worked) Abnormal if connector (63L) is open (under0.03MPa) during compressor operation.
- 1302Error code63H: High-pressure switch Use current sensor to detect work or 8 return of 63H. • Abnormal if current detected phase (Vphase) is open phase after first compressor start-up after supplying the power by three phase power supply model. • When compressor is operating, compressor is suspended | Abnormal High pressure (63H worked) This error is detected (3.24MPa) from 63H action within 20 seconds of compressor starting in the first heating mode after power on. 63H: high-pressure switch
- 1501Error codeAbnormal shortage of refrigerant Abnormal if intake super heat exceeds following temperature during heating compressor operation. 70: or more, and indoor pipe <condenserevaporator> temperature (TH5) is 35: or less.
- 1504Error codeOver heat protection (over-load operation protection/abnormal fan) Abnormal if pipe thermistor detects the value that exceeds set value during compressor operation. P1.6-P6······70:
- 4100Error codeCompressor over current (start-up locked) breaking Abnormal if compressor current exceeds 1.2 times of overload set value.
- 4101Error codeCompressor over current (overload) breaking (only P35Y-P140Y) Abnormal if current value exceeds overload set value during compressor operation. P35 ·····4.5 P50 ·····5.8 P60 ·····6.4 P71 ·····8.0 P100 ·····9.0 P125 ·····15.0 P140 ·····17.0
- 4102Error codeL3-phased open phase detection Detect open phase two seconds after power on.
- 4103Error codedetected when the power is put on> Meaning of error code and detection method — Reverse phase detection, Power supply and indoor/outdoor unit connecting wire converse connection 1. Three seconds after power on, judge reverse phase by detecting voltage phase of each phase. 2. Abnormal four minutes after power on if power supply and indoor/outdoor unit connecting wire have converse connection.
- 4108Error code51CM connector open Abnormal if 51CM connector circuit is open for three minutes continuously after power on. 51CM: Thermal Relay
- 4118Error codeReverse phase detector circuit (controller board) fault Abnormal if some of each phase detection signal is not input three seconds after power supply.
- 4119Error code2 or more connectors open Abnormal if two more out of connector (63L, 49C, 51CM) circuits are open for three minutes continuously after power on.
- 4124Error codeThe connector of 49C is open Consider the unit abnormal when the circuit of connector (49C) remains open for three consecutive minutes with the power on. 49C: Inner thermostat (Compressor) (PUH-P5, 6YGA and PU-P5, 6YGA Only.)
- 5104Error code(Detection is inoperative for five minutes of compressor starting process and for 10 minutes after defrosting.)
- 5105Error code(Detection is inoperative for seven minutes after 10 seconds of compressor starting and for 10 minutes after defrosting.)
- 5107Error code(Detection is inoperative for seven minutes after 10 seconds of compressor starting and for 10 minutes after defrosting.)
- 5202Error code63L connector open Abnormal if 63L connector circuit is open for three minutes continuously after power supply. 63L: Low-pressure switch (PUH-P5, 6YGA and PU-P5, 6YGA Only.)
- 5300Error codeCurrent sensor error Abnormal if compressor current is not detected on first compressor start-up after power supply is put on.
- 6600Error codeerror> Meaning of error code 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 codeHard ware error of transmission Pline 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. Over error by collision damage Abnormal if transmitting 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 Pline Defective communication between unit processor and transmission processor Note) The address and attribute display at remote controller indicate the controller that detected abnormality.
- 6607Error code1. Transmitting side controller detects abnormal if a massage was transmitted but there is no reply (ACK) that a massage was received. Transmitting side detects abnormality every 30 seconds, six 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 outdoor unit, Indoor unit detects abnormality when indoor unit transmitted to outdoor unit and there was no reply (ACK). 3. If di | 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).
- 6608Error code7. If displayed address or attribute is nonexistent, M-NET•NO RESPONSE Abnormal if a massage was transmitted and there were reply (ACK) that massage was received, but response command does not return. Transmitting side detects abnormality every 30 seconds, six times continuously. Note) The address and attribute displayed at remote controller is indicate the controller that did not reply (ACK). TROUBLESHOOTING BY INFERIOR Phenomena controller display does not Reference current marker “ ” is not L
- 6840Error codeIndoor/outdoor unit communication error (Signal receiving error) (Outdoor unit) (1) Abnormal if outdoor controller could not receive anything normally for three minutes.
- 6841Error codeIndoor/outdoor unit communication error (Transmitting error) (Outdoor unit) (1) Abnormal if “0” receiving is detected 30 times continuously though indoor controller has transmitted “1”. (2) Abnormal if outdoor controller could not find blank of transmission path for three minutes.
- 6844Error codewiring, excessive number of units (5 units or more) 1. Abnormal if the number of connected indoor units can not be set within four minutes after power on because of mis-wiring of indoor/outdoor unit connecting wire and the like. 2. Abnormal if outdoor controller board recognizes the number of connected indoor units as “5 units or more”.
- 6845Error codeAbnormal if the indoor unit number can not be set within four minutes after power on because of mis-wiring (converse wiring or disconnection) of indoor/outdoor unit connecting wire.
- 6846Error codeStart-up time over The unit can not finish start-up process within four minutes after power on.
- A0Error codeerror> Meaning of error code 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 codeHard ware error of transmission Pline 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. Over error by collision damage Abnormal if transmitting 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 Pline Defective communication between unit processor and transmission processor Note) The address and attribute display at remote controller indicate the controller that detected abnormality.
- A7Error code1. Transmitting side controller detects abnormal if a massage was transmitted but there is no reply (ACK) that a massage was received. Transmitting side detects abnormality every 30 seconds, six 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 outdoor unit, Indoor unit detects abnormality when indoor unit transmitted to outdoor unit and there was no reply (ACK). 3. If di | 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).
- A8Error code7. If displayed address or attribute is nonexistent, M-NET•NO RESPONSE Abnormal if a massage was transmitted and there were reply (ACK) that massage was received, but response command does not return. Transmitting side detects abnormality every 30 seconds, six times continuously. Note) The address and attribute displayed at remote controller is indicate the controller that did not reply (ACK). TROUBLESHOOTING BY INFERIOR Phenomena controller display does not Reference current marker “ ” is not L
- E0Error code(No display): Remote controller communication error (Signal receiving error) (1) Abnormal if any signal from IC of refrigerant address “0” could not normally received for three minutes. (2) Abnormal if sub remote controller could not receive any signal for two minutes.
- E3Error code(No display): Remote controller communication error (Transmitting error) (1) Abnormal if sub remote controller could not find blank of transmission path for six seconds. (2) Abnormal if remote controller could not finish transmitting 30 times continuously.
- E4Error codeRemote controller signal receiving error Abnomal if indoor controller board can 1 not receive normally any data from remote controller or from other indoor controller board for three minutes. Indoor controller board can not receive 2 any signal from remote controller for two minutes.
- E5Error codeAbnormal if indoor controller board can 2 not finish transmitting 30 times consecutively.
- E6Error code(e6): Indoor/outdoor unit communication error (Signal receiving error) Abnormal if indoor controller board can 1 not receive any signal normally for six minutes after putting the power on. Abnormal if indoor controller board can 2 not receive any signal normally for three minutes. Consider the unit abnormal under the 3 following condition: When two or more indoor units are connected to one outdoor unit, outdoor unit cannot receive a signal for three minutes from indoor controller board, a signal which
- E7Error code<Abnormalities Error Code None: Indoor/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) (1) Abnormal if outdoor controller could not receive anything normally for three minutes.
- E9Error codeIndoor/outdoor unit communication error (Transmitting error) (Outdoor unit) (1) Abnormal if “0” receiving is detected 30 times continuously though indoor controller has transmitted “1”. (2) Abnormal if outdoor controller could not find blank of transmission path for three minutes.
- EAError codewiring, excessive number of units (5 units or more) 1. Abnormal if the number of connected indoor units can not be set within four minutes after power on because of mis-wiring of indoor/outdoor unit connecting wire and the like. 2. Abnormal if outdoor controller board recognizes the number of connected indoor units as “5 units or more”.
- EBError codeAbnormal if the indoor unit number can not be set within four minutes after power on because of mis-wiring (converse wiring or disconnection) of indoor/outdoor unit connecting wire.
- ECError codeStart-up time over The unit can not finish start-up process within four minutes after power on.
- EDError codeSerial communication error The communication between outdoor controller board and M-NET p.c. board is not available. | <M-NET communication Error Code: Serial communication error Abnormal if communication between outdoor controller circuit board and M-NET board is not available.
- EFError code(6607 6608) <M-NET communication Error Code: Not defined error code This code is displayed when not defined error code is received.