Mitsubishi Electric klima error codes
Codes
- 0403Error codeSerial communication error: Serial communication error between the control board and the INV board on the compressor. Detail code 01: Between the control board and the INV board | Panel communication error (Indoor unit): This error is detected when indoor units cannot successfully receive the signals from the Auto filter cleaning unit for one minute.
- 0404Error codeA control communication reception error: Indoor controller board Abnormal if data cannot be read normally from the nonvolatile memory of the indoor controller board.
- 1102Error codeDischarge temperature fault: 1) If the discharge temperature of 120 °C [248°F] or more is detected during the above operation (the first detection), the heat source unit stops once, turns to anti-restart mode for 3 minutes, and restarts after 3 minutes automatically. 2) If the discharge temperature of 120° C [248°F] or more is detected again (the second detection) within 30 minutes after the second stop of the heat source unit described above, the mode will be changed to 3 - minute restart mode, then the heat source unit wi
- 1110Error code9-3. TROUBLESHOOTING Phenomena 1. Remote controller work.: Pipe temperature <Heating mode> When 10 seconds have passed after the compressor starts operation and the hot adjustment mode has finished, the unit is detected as abnormal when condenser/ evaporator pipe temperature is not in heating range within 20 minutes. Note 3: It takes at least 27 minutes to detect abnormality. Note 4: It excludes the period of defrosting (Detection restarts when defrosting mode is over) Heating range : 37.4°F (3°C) ≤ (Condenser/ Evaporator temperature (T63HS)− room tempe
- 1111Error codeLow pressure saturation temperature sensor abnormality (TH2): 1. When saturation temperature sensor (TH2) or liquid level detecting temperature sensors (TH3, TH4) detects -40˚C or less (the first time) during operations, outdoor unit stops once, mode is changed to restart mode after 3 minutes, then the outdoor unit restarts. 2. When -40˚C or less temp. is detected again (the second time) within 30 minutes after stop of outdoor unit, error stop is observed with code Nos. “1111,” “1112,” or “1113” displayed.
- 1112Error codeLiquid level sensing temperature sensor abnormality (TH4) (Outdoor fault unit) temperature saturation: tection), the outdoor unit is temporarily stopped and it enters the re-start prohibit mode for 3 minutes after which it is started. 2 40°C If – or more is detected again within 30 minutes of the stopping of the outdoor unit, (2nd detection), the outdoor unit is temporarily stopped again and it enters the re-start prohibit mode for 3 minutes after which it is started. 3 40°C If – or more is detected again within 30 minutes of the outdoor unit being stopped (3rd detection), an error stop is perfor
- 1113Error codeLiquid pressure level detection temperature Low sensor abnormality (TH3) (Outdoor unit): since the outdoor unit was stopped, it is treated as the first 1 detection and above is repeated. 5 The unit is in an error stop delay period for 30 minutes after the outdoor unit has been stopped, during which time the error stop delay LED is displayed. Note) 1: Low Pressure Saturation Temperature error is not detected for 3 minutes after the start of compressor operation, during defrosting and for 3 minutes after recovering from defrosting. 2: “1111”, “1112”, or “1113” are also displayed if TH
- 1300Error codeLow pressure Abnormal if the following conditions are detected for continuously 3 minutes after compressor starts heating operating for 10 minutes. Heating mode (1) 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 ] Cooling mode (2) TH6−TH7 2°C and [ TH3−TH7 2°C and [ Indoor room temper
- 1301Error codeLow pressure abnoramlity: When starting from the stop mode for the first time, (if at the start of bind power transmission, the end of bind power transmission, and in the mode when the thermostat goes OFF immediately after the remote control goes ON, the following compressor start time is included), if the low pressure pressure sensor before starting is at 0.098MPa, operation stops immediately.
- 1302Error codeHigh pressure fault 1 (Heat source unit): 1) If the pressure of 3.78MPa [548psi] or higher is detected by the pressure sensor during operation (the first detection), the heat source stops once, turns to antirestart mode for 3 minutes, and restarts after 3 minutes automatically.
- 1500Error codeOvercharged refrigerant abnomality (Outdoor unit): A error is detected in the outlet temperature super heat (TH11, 12-Tc) and in the liquid level in the accumulator as indicated below. 1 If the liquid level in the accumulator AL = 2 (over level) develops during operation, (1st detection), the outdoor unit is temporarily stopped and it enters the re-start prohibit mode for 3 minutes after which it is started. 2 If liquid level in the accumulator AL = 2 (over level) is detected again within 30 minutes of the stopping of the outdoor unit, (2nd dete
- 1501Error codeLacked refrigerant abnormality (Variable capacity unit) abnormality refrigerant Insufficient: 1. When the unit condition is as follows, the compressor is stopped (1st detection) and after 3 minutes, the compressor is restarted automatically. • R22 refrigerant models: 1) Cooling mode 1F 120°C, < 60 Hz, TH1 > TH1-Tc > 60deg 2) Heating mode 1F 100°C, < 60 Hz, TH1 > 15°C TH1-Tc > 55deg. TH5 > 2F 120°C, < 60 Hz, TH1 > TH1-Tc > 70deg. 15°C. TH5 • R407C refrigerant models: 85°C F1 < 60 Hz, TH10c > F1 60 Hz, TH10c > 100°C 2. If the temperature rises again as above within 2 hours after the outdoo
- 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 codeOverheat protection Abnormal if outdoor pipe thermistor (TH3), condensing temperature T63HS detects 70: or more during compressor operation.
- 1505Error codeSuction pressure abnormality (Variable capacity unit): • R22 refrigerant models: 1 If it has been determined by the high pressure pressure, outlet temperature and low pressure saturation temperature that the suction pressure kg/cm2 has approached 0 G (0 MPa) during compressor operation, back-up control is performed by the gas bypass. 2 1 If the condition as in continues for 3 minutes, the outdoor unit is stopped and it enters the re-start prohibit mode for 3 minutes after which it is started. 3 If the same condition as in 1 continues within 30 minut
- 1509Error codeduring compressor operation. TH3: Thermistor <Liquid> Abnormal pressure of 63HS Abnormal if 63HS detects 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
- 1520Error codeToo low superheat due to low discharge temperature Abnormal if discharge superheat is continuously detected less than or equal -15: to for 3 minutes even though linear expansion valve has minimum open pulse after compressor starts operating for 10 minutes.
- 1559Error codeOil balance Circuit abnormality (Constant capacity unit): 1 There will be an error stop during operation when there is an inadequacy in the oil balance circuit connecting the two units due to the constant capacity unit TH10b.
- 2000Error codePump interlock error: 1) This error is detected by the pump interlock circuit (TB8 3-4). 2) If it is detected that the pump interlock circuit (TB8 3-4) is open (first detection) during operation or immediately before startup, the heat source unit stops and goes into the 10-minute restart delay mode. 3) If the pump interlock circuit (TB8 3-4) has remained open for continuous 10 minutes (second detection) since the first stoppage of the heat source unit, the unit will make an abnormal stop, and the error code "2000" ap
- 2134Error codeAbnormal water temperature: 1) If a water inlet pipe temperature (TH7) of 5°C[41ºF] or below OR 50°C[122ºF] or above is detected (first detection) during operation, the heat source unit stops, goes into the 3-minute restart delay mode, and automatically restarts after three minutes. 2) If a water inlet pipe temperature (TH7) of 5°C[41ºF] or below OR 50°C[122ºF] or above is detected again (second detection) within 30 minutes of the first stoppage of the heat source unit, the unit will make an abnormal stop, and the error co
- 2135Error codeWater heat exchanger freeze up: 1) If either of the following conditions is detected (first detection) during operation, the heat source unit stops, goes into the 3minute restart delay mode, and automatically restarts after three minutes. Water outlet pipe temperature (TH8) of 4°C[39ºF] or below is detected. All of the following conditions are continuously met for one minute during Heating-only or Heating-main operation: Compressor frequency < Minimum frequency + 20 AND Evaporation temperature (Te) < -2ºC[28°F] AND Accumulator
- 2500Error codeDrain sensor submergence (Models with a drain sensor): 1) If an immersion of the drain sensor in the water is detected while the unit is in any mode other than the Cool/Dry mode and when the drain pump goes from OFF to ON, this condition is considered preliminary water leakage. While this error is being detected, humidifier output cannot be turned on.(Applicable to the units manufactured in or after October 1996) 2) If the immersion of the sensor in the water is detected four consecutive times at an hour interval, this is considered water leakage, a | Drain sensor submergence (Models with a float switch): 1) If an immersion of the float switch in the water is detected while the unit is in any mode other than the Cool/Dry mode and when the drain pump goes from OFF to ON, this condition is considered preliminary water leakage. While this error is being detected, humidifier output cannot be turned on. 2) If the drain pump turns on within one hour after preliminary water leakage is detected and the above-mentioned condition is detected two consecutive times, water leakage error water leakage is detec
- 2502Error codeDrain pump fault (Models with a drain sensor): 1) Make the drain sensor thermistor self-heat. If the temperature rise is small, it is interpreted that the sensor is immersed in water. This condition is considered to be a preliminary error, and the unit goes into the 3-minute restart delay mode. 2) If another episode of the above condition is detected during the preliminary error, this is considered a drain pump error, and "2502" appears on the monitor. 3) This error is always detected while the drain pump is in operation. 4) The following cr | Drain pump fault (Models with a float switch): 1) The immersion of sensor tip in water is detected by the ON/OFF signal from the float switch. Submergence of the sensor When it is detected that the float switch has been ON for 15 seconds, it is interpreted that the sensor tip is immersed in water. Sensor in the air When it is detected that the float switch has been OFF for 15 seconds, it is interpreted that the sensor tip is not immersed in water. 2) If it is detected that the float switch has been ON for 3 minutes after the immersion of the
- 2503Error codeDrain sensor (Thd) fault: If the open or short circuit of the thermistor has been detected for 30 seconds, this condition is considered to be a preliminary error, and the unit goes into the 3-minute restart delay mode. If another episode of the above condition is detected during the preliminary error, this is considered a drain sensor error.(If the short or open circuit of the thermistor is no longer detected, normal operation will be restored in 3 minutes.) This error is detected when one of the following conditions
- 2601Error codeWater supply cutoff 2. Cause, check method and remedy
- 2602Error codeFunction setting error 2. Cause, check method and remedy
- 4100Error codeCompressor overcurrent interruption (When compressor locked) Abnormal if overcurrent of DC bus or compressor is detected within 30 seconds after compressor starts operating.
- 4103Error code
- 4106Error codePower off abnormality (Variable capacity unit): 1 Cannot operate because the constant capacity unit is disconnected from the power source.
- 4108Error codeOver-current Protection (Outdoor unit): 1 First detection If the 51C2 is operated during operation of the No. 2 or No. 3 compressor the outdoor unit will temporarily stop. After 3 minutes, it will restart. 2 Second detection After 1 minute since the above restart, if the 51C2 operates again there will be an error stop, and “4108” will be displayed. 3 After the outdoor unit stops and the No. 2 compressor restarts there will be 1 minute during which the unit is in preliminary error stop mode.
- 4109Error codeFor motor abnormality: If the supplemental relay Z3 has not been energized for a certain length of time, the unit will make an error stop, and the fan output will be off.
- 4115Error codePower supply sync signal abnormality (Variable capacity unit): The frequency cannot be determined when the power is switched on. (The power supply’s frequency cannot be detected. The outdoor fan cannot be controlled by phase control.)
- 4116Error codeFan speed abnormality (motor abnormality) (Indoor unit): Detects only for PKFY-VAM) 1. Detecting fan speed below 180rpm or over 2000rpm during fan operation at indoor unit (first detection) enters into the 3-minute restart prevention mode to stop fan for 30 seconds. 2. When detecting fan speed below 180rpm or over 2000rpm again at fan returning after 30 seconds from fan stopping, error stop (fan also stops) will be commenced displaying 4116.
- 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 <A42N only>
- 4124Error codeElectric system not operate due to damper abnormality: When the damper is not located at the designated position.
- 4200Error codeVDC sensor/ circuit abnormality (Variable capacity unit): 1 If VDC 304 V is detected just before the inverter starts. 2 If VDC 750 V is detected just before starting of and during operation of the inverter.
- 4210Error codeNote that it applies when the compressor accumulated operating time is under 30 minutes, and 7 minutes has passed after the compressor operation. TH32 - TH4 20°C and TH32 > 80°C ] Thermistors: TH3: Liquid pipe temperature TH33: Comp. Surface temperature TH4: Discharge temperature TH5: Indoor 2-phase pipe temperature TH7: Ambient temperature Thermistor TH3: Outdoor liquid pipe temperature TH4: Discharge temperature TH5: Indoor cond./eva. temperature TH6: Outdoor 2-phase pipe temperature TH7: Outd
- 4220Error code01 02 04 08 | PFC error (Overvoltage/ Detailed codes Undervoltage/Overcurrent) • PFC detected any of the followings a) Increase of DC bus voltage to 420V.
- 4230Error codeRadiator panel overheat protection: If the cooling fan stays ON for 5 minutes or longer during inverter operation, and 100°C if THHS is detected.
- 4240Error codeOvercurrent protection (Variable capacity unit): If IDC 66.5 A peak is detected continuously for 10 minutes during operation of the inverter after 5 or more seconds have passed since the inverter started.
- 4250Error codeIPM alarm output / Bus voltage abnormality: 1 If over current, overheat or undervoltage of drive cirduit is detected by IPM during inverter operation. [Inverter error detail : 1] 2 If VDC 300 or VDC 760V is detected during inverter operation. [Inverter error detail : 1] 3 If IAC 39Amps is detected during inverter operation. [Inverter error detail : 11]
- 4260Error codeCooling fan abnormality (Variable capacity unit): If the heat sink temperature (THHS) 60°C for 18 minutes or longer just before the inverter starts.
- 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; • 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. To find out the detail history (latest) Detailed Refer to "10-10. FUNCTION OF SWITCHES, codes Overvoltage error • Increase in DC bus voltage to: A12, 18N: 400 V
- 5101Error codeReturn air temperature sensor (TH21) fault (Indoor unit) Return air temperature sensor (TH4) fault (OA processing unit): If a short or an open is detected during thermostat ON, the heat source unit turns to anti-restart mode for 3 minutes. When the error is not restored after 3 minutes (if restored, the heat source unit runs normally), the heat source unit makes an error stop. During heating operation During cooling operation for 3 minutes after the co
- 5102Error codePipe temperature sensor (TH22) fault (Indoor unit) Pipe temperature sensor (TH2) fault (OA processing unit): If a short or an open is detected during thermostat ON, the heat source unit turns to anti-restart mode for 3 minutes. When the error is not restored after 3 minutes (if restored, the heat source unit runs normally), the heat source unit makes an error stop. During heating operation During cooling operation for 3 minutes after the co | HIC bypass circuit outlet temperature sensor (TH2) fault (Heat source unit): When a short (high temperature intake) or an open (low temperature intake) of the thermistor is detected (the first detection), the heat source unit stops, turns to anti-restart mode for 3 minutes, and restarts when the detected temperature of the thermistor. When a short or an open is detected again (the second detection) after the first restart of the heat source unit, the heat source unit stops, turns to anti-restart mode for 3 minutes, and restarts in 3 minutes when the detected temperatur
- 5103Error codeGas-side pipe temperature sensor (TH23) fault (Indoor unit) Gas-side pipe temperature sensor (TH3) fault (OA processing unit): If a short or an open is detected during thermostat ON, the heat source unit turns to anti-restart mode for 3 minutes. When the error is not restored after 3 minutes (if restored, the heat source unit runs normally), the heat source unit makes an error stop. During heating operation During cooling operation for 3 minutes after the co | Heat exchanger outlet temperature sensor (TH3) fault (Heat source unit): When a short (high temperature intake) or an open (low temperature intake) of the thermistor is detected (the first detection), the heat source unit stops, turns to anti-restart mode for 3 minutes, and restarts when the detected temperature of the thermistor. When a short or an open is detected again (the second detection) after the first restart of the heat source unit, the heat source unit stops, turns to anti-restart mode for 3 minutes, and restarts in 3 minutes when the detected temperatur
- 5104Error codeIntake air temperature sensor (TH1) fault (OA processing unit) Intake air temperature sensor (TH24) fault (All-fresh (100% outdoor air) type indoor unit): If a short or an open is detected during thermostat ON, the heat source unit turns to anti-restart mode for 3 minutes. When the error is not restored after 3 minutes (if restored, the heat source unit runs normally), the heat source unit makes an error stop. During heating operation During cooling operation for 3 minutes after the co | Discharge temperature sensor (TH4) fault (Heat source unit): When a short (high temperature intake) or an open (low temperature intake) of the thermistor is detected (the first detection), the heat source unit stops, turns to anti-restart mode for 3 minutes, and restarts when the detected temperature of the thermistor. When a short or an open is detected again (the second detection) after the first restart of the heat source unit, the heat source unit stops, turns to anti-restart mode for 3 minutes, and restarts in 3 minutes when the detected temperatur
- 5105Error codeAccumulator inlet temperature sensor (TH5) fault (Heat source unit): When a short (high temperature intake) or an open (low temperature intake) of the thermistor is detected (the first detection), the heat source unit stops, turns to anti-restart mode for 3 minutes, and restarts when the detected temperature of the thermistor. When a short or an open is detected again (the second detection) after the first restart of the heat source unit, the heat source unit stops, turns to anti-restart mode for 3 minutes, and restarts in 3 minutes when the detected temperatur
- 5106Error codeHIC circuit outlet temperature sensor (TH6) fault (Heat source unit): When a short (high temperature intake) or an open (low temperature intake) of the thermistor is detected (the first detection), the heat source unit stops, turns to anti-restart mode for 3 minutes, and restarts when the detected temperature of the thermistor. When a short or an open is detected again (the second detection) after the first restart of the heat source unit, the heat source unit stops, turns to anti-restart mode for 3 minutes, and restarts in 3 minutes when the detected temperatur
- 5107Error codeOutside temperature sensor (TH7) fault (Heat source unit): When a short (high temperature intake) or an open (low temperature intake) of the thermistor is detected (the first detection), the heat source unit stops, turns to anti-restart mode for 3 minutes, and restarts when the detected temperature of the thermistor. When a short or an open is detected again (the second detection) after the first restart of the heat source unit, the heat source unit stops, turns to anti-restart mode for 3 minutes, and restarts in 3 minutes when the detected temperatur