Mitsubishi Electric PLA error codes
Codes
- 2500Error 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
- 2502Error 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
- 5701Error codeContact failure of drain float switch (CN4F) Extract when the connector of drain float 1 switch is disconnected. (3 and of connector CN4F is not 4 short-circuited.) Constantly detected during operation. 2
- E0Error codeRemote controller transmission error(E0)/signal receiving error(E4) Abnormal if main or sub remote con1 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 board for 3 minutes.
- E1Error codeRemote controller control board 1 Abnormal if data cannot be read normally from the nonvolatile memory of the remote controller control board. (Error code: E1) Abnormal if the clock function of remote 2 controller cannot be operated normally.
- E2Error codecontroller cannot be operated normally. (Error code: E2) BY INFERIOR PHENOMENA Cause board • When LED1 on indoor controller Power supply of rated voltage door unit. Defective outdoor controller Power supply of 208/230V unit. Defective indoor controller (For the separate indoor/outdoor ply system) Power supply of 208/230V indoor unit. The connectors of the optional not used. Defective indoor controller • When LED1 on indoor controller Mis-setting of refrigerant address (There is no unit correspon
- 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, compares the data, and when detecting it, judges different data to be abnormal 30 continuous times. (Error code: E3)
- E4Error codeRemote controller signal receiving error Abnormal if indoor controller board can 1 not receive normally any data from remote controller or from other indoor controller board for three minutes. Indoor control board cannot receive any 2 signal from remote controller for two minutes.
- E5Error codeTCH070A: if these data are judged to be different 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 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. (Check code: E5)
- E6Error code(Signal receiving error) 1 Abnormal if indoor controller board cannot receive any signal normally for 6 minutes after turning the power on. 2 Abnormal if indoor controller board cannot 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 signal which allows outdoor controller circuit
- E7Error codeIndoor/outdoor unit communication error (Transmitting error) Abnormal if “1” receiving is detected 30 times continuously though indoor controller board has transmitted “0”. TROUBLESHOOTING BY INFERIOR Phenomena on indoor controller board • When LED1 Power supply off. 1 unit. Defective 2 Power supply 3 unit. Defective 4 Defective 5 • When LED1 Mis-setting 1 (There address on indoor controller board • When LED1 Connection blinking. wire • When LED1 Mis-wiring Under twin units are Refrigerant 1 set
- FBError code(Fb): Indoor controller board Abnormal if data cannot be read normally from the nonvolatile memory of the indoor controller board.
- P1Error codeRoom temperature thermistor (TH1) 1 The unit is in 3-minute resume prevention mode if short/open of thermistor is detected. Abnormal if the unit does not reset normally after 3 min utes. (The unit returns to normal opera tion, if it has been reset normally.) Constantly detected during cooling, 2 drying, and heating operation. Short: 194°F [90:] or more Open: −40°F [−40:] or less
- P2Error codePipe temperature thermistor/liquid (TH2) 1 The unit is in 3-minute resume 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.) 2 Constantly detected during cooling, drying, and heating (except defrosting) operation Short: 194°F [90:] or more Open: −40°F [−40:] or less Note: When all of the following conditions have been satisfied, the error is not detected: 1)
- P4Error codeAbnormality of drain sensor (DS) Suspensive abnormality, if short/open of 1 thermistor is detected for 30 seconds continuously. (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> temp
- P5Error codeCompressor and indoor fan will be turned off. 2 Drain pump is abnormal if the condition above is detected during suspensive abnormality. 3 Constantly detected during drain pump operation | Drain pump lock protection operation Error postponement, if drain pump stops 1 for 5 seconds continuously while drain pump is operating. Drain pump is abnormal if above condi2 tion is repeated 4 times after error postponement is detected.
- P6Error codeTCH070A: Drain pump lock protection operation Error postponement, if drain pump stops 1 for 5 seconds continuously while drain pump is operating. Drain pump is abnormal if above condi 2 tion is repeated 4 times after error post ponement is detected. Freezing/overheating protection is work ing Freezing protection (Cooling mode) 1 • In case when outside temperature > −4°F [−20:] The unit is in 6-minute resume preven tion mode if pipe <liquid or condenser/ evaporator> temperature stays under −5°F [−15:]
- P8Error codeAbnormality of pipe temperature <Cooling mode> Detected as abnormal when the pipe temperature is not in the cooling range 3 minutes later of compressor start and 6 minutes later of 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.
- P9Error codeTCH070A: Condenser/evaporator temperature ther mistor (TH5) The unit is in 3-minute resume protec 1 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: 194°F [90:] or more Open: −40°F [−40:] or less Note: When all of the following conditions have been satisfied, the error is
- 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
- PBError code(Pb): Fan motor trouble
- PLError codeAbnormal refrigerant circuit During Cooling, Dry, or Auto Cooling operation, when the following are regarded as failures when detected one second. a) The compressor continues to run for or more seconds. b) The liquid pipe temperature or the condense/evaporator temperature 75°C or more. * These detected errors will not be cancelled until the power source reset. OF PROBLEMS board • When LED1 on 1 Power supply of door unit. 2 Defective outdoor 3 Power supply of unit. 4 Defective indoor (For the sep