Mitsubishi Electric SUZ 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 Abnormal if the following conditions are detected continuously for 3 minutes after compressor starts heating operating for 10 minutes. (1) Heating mode Detection mode 1 TH7 − TH3 ≤ 7°F [4°C] and TH5 − Indoor room temperature ≤ 4°F [2°C] Detection mode 2 TH7 − TH3 ≤ 4°F [2°C] and TH5 − Indoor room temperature ≤ 7°F [4°C] and TH2 − Indoor room temperature ≤ 7°F [4°C] Detection mode 3 TH7 − TH3 ≤ 7°F [4°C] and TH5 − Indoor room temperature ≤ 4°F [2°C] and TH4 − TH5 ≥ 36°F [20°C] (2) Co
- 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 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.
- 1504Error codeIt is abnormal for 44 A the input current or 10 seconds continuous 40 A or more. Overheat protection Abnormal if outdoor liquid pipe thermistor (TH3) detects 158˚F [70°C] or more during compressor operation.
- 4100Error codeCompressor overcurrent interruption (When compressor locked) Abnormal if overcurrent of DC bus or compressor is detected within 30 seconds after compressor starts operating.
- 4210Error codeCompressor overcurrent interruption Abnormal if overcurrent DC bus or compressor is detected after compressor starts operating for 30 seconds.
- 4220Error codeDetailed To find out the detail history (latest) codes Refer to "10-9. FUNCTION OF SWITCHES, Overvoltage error • Increase to DC bus voltage to 430V 01 Undervoltage error • Instantaneous decrease in DC bus voltage to 200 V 02 Input current sensor error • Decrease in input current through outdoor unit to 0.5 A 04 only if operation frequency is more than or equal to 40 Hz or compressor current is more than or equal to 6 A. Abnormal power synchronous signal • No input of power synchronous signal to | Detailed To find out the detail history (latest) codes Refer to "10-9.
- 4230Error codeTemperature of heatsink Abnormal if heat sink thermistor(TH8) detects temperature indicated below. KA24································ 170°F [77°C] KA30/36···························· 177°F [81°C]
- 4250Error codePower module Check abnormality by driving power module if 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 the following conditions are observed: • 100 rpm or below detected continuously for 15 seconds at 68˚F [20°C] or more outside air temperature. • 50 rpm or below or 1500 rpm or more detected continuously for 1 minute.
- 5201Error code— 63H or TRS connector open Abnormal if 63H or TRS connector circuit is open for 3 minutes continuously after power supply. • 63H: High pressure switch • TRS: Thermal protector
- 5300Error codeCurrent sensor error • Type 36/42 : It is abnormal for 38A the input current or 10 seconds continuous 34 A or more. • Type 48/60 : It is abnormal for 44A the input current or 10 seconds continuous 40 A or more.
- 6600Error codeAddress 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 Overtime error by collision damage (1) Abnormal if transmitting signal is not possible for 8–10 minutes continuously because of collision of transmission. Data could not reach transmission wire (2) for 8–10 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 Common Transmitting side controller detects relation (1) 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 is indicate the controller that did not reply (ACK). If displayed address or attribute is (2) outdoor unit, Indoor unit detects abnormality when indoor unit transmitted to outdoor unit and ther | If displayed address or attribute is (4) remote controller, indoor unit detects abnormality when indoor unit transmitted to remote controller and there was no reply (ACK). If displayed address or attribute is (5) FRESH MASTER, indoor unit detects abnormality when indoor unit transmitted to FRESH MASTER and there was no reply (ACK). If displayed address or attribute is (6) LOSSNAY. Indoor unit detects abnormality when indoor unit transmitted to LOSSNAY and there was no reply (ACK). If displayed a
- 6608Error code10-4. TROUBLESHOOTING Remote controller (1) work. [Please Wait] (2) on the remote When pressing (3) operation display is turned off: M-NET NO RESPONSE Abnormal if a message was transmitted and there were reply (ACK) that message was received, but response command does not return. 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). BY INFERIOR Phenomena display does not 12 VDC is not supplied 12–15 VDC is supplied no display is indicated. • [Please Wait] is not • [Please Wait] is displayed.
- 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. Abnormal if indoor controller board could (2) not receive any signal normally for 3 minutes. Consider the unit as abnormal under the (3) following conditions: When 2 or more indoor units are connected to an outdoor unit; when the indoor controller board could not receive a signal for 3 minutes from the outdoor con | times continuously though indoor controller board has transmitted “0”. Indoor/outdoor unit communication error (Signal receiving error) (Outdoor unit) Abnormal if outdoor controller circuit (1) board could not receive anything normally for 3 minutes.
- 6841Error codeIndoor/outdoor unit communication error (Transmitting error) (Outdoor unit) Abnormal if “0” receiving is detected (1) 30 times continuously though outdoor controller circuit board has transmitted “1”. Abnormal if outdoor controller circuit (2) board could not find blank of transmission path for 3 minutes.
- 6842Error codeIndoor/outdoor unit communication error (Transmitting error) Abnormal if “1” receiving is detected 30 times continuously though indoor controller board has transmitted “0”.
- 6844Error codeAbnormal if the number cannot be checked automatically due to miswiring of the indoor/outdoor unit connecting wire, etc. after power is turned on for 4 minutes. (2) Abnormal if the outdoor controller circuit board detects excessive number of indoor units.
- 6845Error codeAbnormal if the indoor unit number (2) cannot be set within 4 minutes after power on because of miswiring (converse 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. High pressure (High pressure switch 63H operated) /High compressor temperature (Thermal protector TRS operated) Abnormal if high pressure switch 63H (4.15 MPa, 602 psig) or thermal protector TRS (248˚F [120˚C]) operated during compressor operation
- 7130Error codeAbnormal if a connection of indoor unit and outdoor unit which uses different refrigerant is detected.
- A0Error codeAddress 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 Overtime error by collision damage (1) Abnormal if transmitting signal is not possible for 8–10 minutes continuously because of collision of transmission. Data could not reach transmission wire (2) for 8–10 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 Common Transmitting side controller detects relation (1) 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 is indicate the controller that did not reply (ACK). If displayed address or attribute is (2) outdoor unit, Indoor unit detects abnormality when indoor unit transmitted to outdoor unit and ther | If displayed address or attribute is (4) remote controller, indoor unit detects abnormality when indoor unit transmitted to remote controller and there was no reply (ACK). If displayed address or attribute is (5) FRESH MASTER, indoor unit detects abnormality when indoor unit transmitted to FRESH MASTER and there was no reply (ACK). If displayed address or attribute is (6) LOSSNAY. Indoor unit detects abnormality when indoor unit transmitted to LOSSNAY and there was no reply (ACK). If displayed a
- A8Error code10-4. TROUBLESHOOTING Remote controller (1) work. [Please Wait] (2) on the remote When pressing (3) operation display is turned off: M-NET NO RESPONSE Abnormal if a message was transmitted and there were reply (ACK) that message was received, but response command does not return. 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). BY INFERIOR Phenomena display does not 12 VDC is not supplied 12–15 VDC is supplied no display is indicated. • [Please Wait] is not • [Please Wait] is displayed.
- E0Error code(6831, 6834): Remote controller transmission error (E0)/signal receiving error (E4) Abnormal if main or sub remote con- (1) troller cannot receive any transmission normally 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) Abnormal if indoor controller board (1) cannot receive any data normally from remote controller board or from other indoor controller boards for 3 minutes. (Error
- E1Error code(6201, 6202): ler for 2 minutes. (Error code: E4) Remote controller control board (1) Abnormal if data cannot be normally read from the nonvolatile memory of the remote controller control board. (Error code: E1) (2) Abnormal if the clock function of remote controller cannot be normally operated. (Error code: E2)
- E2Error code(6201, 6202): ler for 2 minutes. (Error code: E4) Remote controller control board (1) Abnormal if data cannot be normally read from the nonvolatile memory of the remote controller control board. (Error code: E1) (2) Abnormal if the clock function of remote controller cannot be normally operated. (Error code: E2)
- E3Error code(6832, 6833): Remote controller transmission error (E3)/ signal receiving error (E5) (1) Abnormal if remote controller could not find blank of transmission path for 6 seconds and could not transmit. (Error code: E3) (2) Remote controller receives and transmits data simultaneously for comparison. If different data is detected 30 times in a row, it is judged to be an error. (Error code: E3) (1) Abnormal if indoor controller board could not find blank of transmission path. (Error code: E5) (2) Indoor controller
- E4Error code(6831, 6834): Remote controller transmission error (E0)/signal receiving error (E4) Abnormal if main or sub remote con- (1) troller cannot receive any transmission normally 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) Abnormal if indoor controller board (1) cannot receive any data normally from remote controller board or from other indoor controller boards for 3 minutes. (Error
- E5Error code(6832, 6833): Remote controller transmission error (E3)/ signal receiving error (E5) (1) Abnormal if remote controller could not find blank of transmission path for 6 seconds and could not transmit. (Error code: E3) (2) Remote controller receives and transmits data simultaneously for comparison. If different data is detected 30 times in a row, it is judged to be an error. (Error code: E3) (1) Abnormal if indoor controller board could not find blank of transmission path. (Error code: E5) (2) Indoor controller
- 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. Abnormal if indoor controller board could (2) not receive any signal normally for 3 minutes. Consider the unit as abnormal under the (3) following conditions: When 2 or more indoor units are connected to an outdoor unit; when the indoor controller board could not receive a signal for 3 minutes from the outdoor con
- 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 codetimes continuously though indoor controller board has transmitted “0”. Indoor/outdoor unit communication error (Signal receiving error) (Outdoor unit) Abnormal if outdoor controller circuit (1) board could not receive anything normally for 3 minutes.
- E9Error codeIndoor/outdoor unit communication error (Transmitting error) (Outdoor unit) Abnormal if “0” receiving is detected (1) 30 times continuously though outdoor controller circuit board has transmitted “1”. Abnormal if outdoor controller circuit (2) board could not find blank of transmission path for 3 minutes.
- EAError codeAbnormal if the number cannot be checked automatically due to miswiring of the indoor/outdoor unit connecting wire, etc. after power is turned on for 4 minutes. (2) Abnormal if the outdoor controller circuit board detects excessive number of indoor units.
- EBError codeAbnormal if the indoor unit number (2) cannot be set within 4 minutes after power on because of miswiring (converse 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. High pressure (High pressure switch 63H operated) /High compressor temperature (Thermal protector TRS operated) Abnormal if high pressure switch 63H (4.15 MPa, 602 psig) or thermal protector TRS (248˚F [120˚C]) operated during compressor operation
- 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.
- EEError codeAbnormal if a connection of indoor unit and outdoor unit which uses different refrigerant is detected.
- EFError code(6607 or 6608): Non defined error code This code is displayed when non defined error code is received.
- F5Error code— 63H or TRS connector open Abnormal if 63H or TRS connector circuit is open for 3 minutes continuously after power supply. • 63H: High pressure switch • TRS: Thermal protector
- FHError code167˚F [75°C] or more. These detected errors will not be cancelled until the power source is reset. Refrigerant sensor error Abnormal if refrigerant sensor cannot detect errors normally.