Mitsubishi Electric PSA error codes
Codes
- E0Error codeRemote controller transmission error(E0)/signal receiving error(E4) 1 Abnormal if main or sub remote controller cannot receive any transmission normally from indoor unit of refrigerant address “0” for 3 minutes. (Error code : E0) 2 Abnormal if sub remote controller could not receive any signal for 2 minutes. (Error code: E0) Abnormal if indoor controller board can 1 not receive any data normally from
- E1Error codeRemote controller control board Abnormal if data cannot be read nor1 mally 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) Remote controller receives transmitted 2 data at the same time and compares the received and transmitted data. Abnormal if these data are judged to be different 30 continuous times. (Error code: E3)
- E4Error coderemote controller board or from other indoor controller board for 3 minutes. (Error code: E4) Indoor controller board cannot receive 2 any signal from remote controller for 2 minutes. (Error code: E4)
- E5Error codeAbnormal if indoor controller board could 1 not find blank of transmission path. (Error code: E5) Indoor controller board receives trans2 mitted data at the same time and compares the received and transmitted data. Abnormal if these data are judged to be different 30 continuous times. (Error code: E5)
- E6Error codeIndoor/outdoor unit communication error (Signal receiving error) Abnormal if indoor controller board can 1 not receive any signal normally for 6 minutes after turning the power on. Abnormal if indoor controller board can 2 not receive any signal normally for 3 minutes. 3 Consider the unit abnormal under the following condition: When 2 or more indoor units are connected to an outdoor unit, indoor controller board cannot receive a signal for 3 minutes from outdoor controller circuit board, a signa
- E7Error codeIndoor/outdoor unit communication error (Transmitting error) Abnormal if “1” receiving is detected 30 times continuously though indoor controller board has transmitted “0”.
- FBError codeIndoor controller board Abnormal if data cannot be read normally from the nonvolatile memory of the indoor controller board.
- P1Error codeRoom temperature thermistor (TH1) The unit is in 3-minute resume 1 prevention mode if short/open of thermistor is detected. Abnormal if the unit does not reset normally after 3 minutes. (The unit returns to normal operation, if it has been reset normally.) Constantly detected during cooling, 2 drying, and heating operation. Short: -90: or more Open: -40: or less
- P2Error codePipe temperature thermistor/Liquid (TH2) The unit is in 3-minute resume 1 prevention mode if short/open of thermistor is detected. Abnormal if the unit does not reset normally after 3 minutes. (The unit returns to normal operation, if it has been reset normally.) Constantly detected during cooling, 2 drying, and heating (except defrosting) operation Short: 90: or more Open: -40: or less
- P4Error code(The unit returns to normal operation, if it has normally reset.) Detect the following condition. 3 • During cooling and drying operation. • In case that pipe <liquid> temperature - room temperature <-10deg (Except defrosting) • When pipe <liquid> temperature
- P5Error codeMalfunction of drain pump (DP) Suspensive abnormality, if thermistor 1 of drain sensor is let heat itself and temperature rises slightly. Compressor and indoor fan will be turned off. Constantly detected during drain pump 3 operation.
- P6Error codeFreezing/overheating protection is operating 1 Freezing protection (Cooling mode) The unit is in 6-minute resume prevention mode if pipe <liquid or condenser/evaporator> temperature -15: stays under for 3 minutes, 3 minutes after the compressor started. -15: Abnormal if it stays under for 3 minutes again within 16 minutes after 6-minute resume prevention mode. 2 Overheating protection (Heating mode) The units is in 6 minute resume prevention mode if pipe <condenser / evaporator> temperature is d
- P8Error codePipe 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 minutes to detect. Note 2) Abnormality P8 is not detected in drying mode.
- P9Error codePipe temperature thermistor / Condenser-Evaporator (TH5) The unit is in 3-minute resume protec1 tion mode if short/open of thermistor is detected. Abnormal if the unit does not get back to normal within 3 minutes. (The unit returns to normal operation, if it has been reset normally.) Constantly detected during cooling, 2 drying, and heating operation (except defrosting) Short: 90: or more Open: -40: or less
- PAError code(Drain pump will start operating when the drain sensor is detected to be soaked in the water.) The unit has a water leakage abnormality 2 when the following conditions, a and b, are satisfied while the above-mentioned detection is performed. a) The drain s
- PLError codeAbnormal refrigerant circuit During Cooling, Dry, or Auto Cooling operation, when the following are regarded as failures when detected for one second. a) The compressor continues to run for 30 or more seconds. b) The liquid pipe temperature or the condense/evaporator temperature is 75°C or more. * These detected errors will not be cancelled until the power source is reset. BY INFERIOR PHENOMENA Cause board • When LED1 on indoor controller Power supply of rated voltage 1 door unit. Defective outd