Mitsubishi Electric PUHY error codes
Codes
- 0403Error codeSerial communication error: Serial communication error between the control board and the INV board on the compressor, and between the control board and the Fan board Detail code 1: Between the control board and the INV board Detail code 5, 6: Between the control board and the Fan board
- 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.
- 0910Error codeCircuit check (detected unit): This error code is displayed by the circuit check target indoor unit to inform that the circuit check is under way.
- 0911Error codeCodes Circuit check (other units) Error: 1) This error code is displayed by indoor units that belong to the same shut off space as the circuit check target indoor unit to Using inform that the circuit check is under way. 2) This is a maintenance error code displayed by the indoor units connected to the same outdoor unit that does not belong to the same shut off space as the circuit check target indoor unit to inform that the circuit check is under way. Troubleshooting
- 0912Error codeCircuit check (sensor kit): This error code is displayed on the indoor units under circuit check for the sensor kit to indicate that a circuit check for the sensor kit is in progress.
- 1102Error codeDischarge temperature abnormality (Outdoor unit): 1. When 110˚C for 8HP and 120˚C for 10HP or more discharge temperature is detected during operations (the first time), outdoor unit stops once, mode is changed to restart mode after 3 minutes, then the outdoor unit restarts. 2. When 110°C for 8HP and 120 °C for 10HP or higher discharge is detected again (the second time) within 30 minutes after the first stop of outdoor unit, mode is changed to restart mode after 3 minutes, then the outdoor unit restarts. 3. When 110˚C for 8Hp and 120˚C for 10HP
- 1111Error codeLow pressure saturation temperature sensor abnormality (TH2) trouble temperature saturation pressure Low: 1. When saturation temperature sensor (TH2) 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. When a temperature of -40°C 2. or less is detected again (the second time) with in 30 minutes after the first stop of outdoor unit, mode is changed to restart mode after 3 minutes, then the outdoor unit restarts. 3. When -40˚C or less temp. is detected again (the third time) within 30 minute
- 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 level detecting Low temperature sensor abnormality (TH3): Note: 1. Low press. saturation temperature trouble is not detected for 3 minutes after compressor start, and finish of defrosting operations, and during defrosting operations. 2. In the case of short/open of TH2~TH4 sensors before starting of compressor or within 10 minutes after starting of compressor, “1111,” “1112,” or “1113” is displayed too.
- 1143Error codeShell temperature sensor of compressor (TH10): 1.If the shell temperature sensor of compressor (TH10) detects 85°C [185°F] and more for 60-minutes stretch (the first detection), the outdoor unit stops at once turns to anti-restartmode for 3 minutes, and restarts after 3 minutes automatically. 2.If the shell temperature sensor of compressor detects 85°C [185°F] and more for 60-minutes stretch (the second detection), the outdoor unit will make an error stop and the error code "1143" will be displayed. 3.If the shell temperature sensor of compr
- 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 1.0 kg/cm2G (0.098MPa), operation stops immediately.
- 1302Error codeHigh pressure fault 1 (Outdoor unit): 1) If the pressure of 3.78MPa [548psi] or higher is detected by the pressure sensor during operation (the first detection), the outdoor stops once, turns to antirestart mode for 3 minutes, and restarts after 3 minutes automatically. | crease due to clogging of the heat exchanger The fan is not properly controlled as the outdoor temperature cannot be precisely detected by the
- 1368Error codeLiquid side controller) (BC abnoramlity pressure: When liquid side press, sensor, gas side pressure sensor, or intermediate pressure sensor detects 30kg/cm2G (2.94MPa) or more, error stop is observed with code No. “1368”, or “1370” displayed.
- 1370Error codeIntermediHigh ate side
- 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
- 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
- 1521Error codeError codes related to refrigerant leak are displayed with higher priority than other error codes. Take actions according to [117-3 Flowchart for Refrigerant Leak]. Refrigerant leak error (self detection of the unit): If the indoor unit with the built-in refrigerant sensor detects a refrigerant leak.
- 1524Error codeError codes related to refrigerant leak are displayed with higher priority than other error codes. Take actions according to [117-3 Flowchart for Refrigerant Leak]. Refrigerant leak error (self detection of the sensor kit): If the shut off valve kit with sensor kit detects a refrigerant leak.
- 1550Error codeLiquid back error (detected by current sensor) Instantaneous overcurrent (detail code 001) Overcurrent (effective value) shut off error (detail code 002) ACCT overcurrent error (detail code 003): If the current sensor detects an overcurrent that is equal to or greater than the specified value after the start of operation. | fault and tion faults and winding resistance winding error faults. 2) A compressor winding resistance fault occurs.
- 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.
- 1625Error code
- 1626Error codeSensor kit maintenance: Time to replace the sensor kit
- 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 2006) 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: 1) Make the drain sensor thermistor self-heat by passing current through it. 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 | Drain pump fault: 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 t
- 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
- 2600Error codeWater leakage from humidifier: 1) If the float switch for detecting water leakage is submerged in the water in the humidifier's drain pan and when the drain pump goes from OFF to ON, this condition is considered a preliminary water leakage. While the preliminary water leakage error is being detected, the humidifier cannot output the on signal. The discharge valve will be closed. 2) If the drain pump turns on within one hour after preliminary water leakage is detected and the above-mentioned condition is detected two consecuti
- 2601Error codeWater supply cutoff 2. Cause, check method and remedy
- 3121Error codeOut-of-range outside air temperature: When the thermistor temperature of -28°C[-18°F] or below has continuously been detected for 3 minutes during heating operation (during compressor operation), the unit makes an error stop and "3121" appears on the display. (Use the OC thermistor temperature to determine when two outdoor units are in operation.) The compressor restarts when the thermistor temperature is -26°C[-15°F] or above (both OC and OS) during error stop.
- 3511Error codeRefrigerant overcooling: A*1 1) If the condition "THHS ≤ °C remains true for continuous 6 minutes and 30 seconds" is met (for the first time) during operation, the outdoor unit will stop, go into the three-minute restart delay mode, and then automatically resume operation after three minutes have passed. A*1 2) If the condition "THHS ≤ °C remains true for continuous 6 minutes and 30 seconds" is met again (for the second time) within 30 minutes of the first stoppage of the outdoor unit explained above, the outdoor unit w
- 3512Error codeCooling fan locking: The motor on the cooling fan locks during operation.
- 4102Error codeThe open phase of the power supply may not always be detected if a power voltage from another circuit is applied. The L3 phase current is outside of the specified range. The open phase of the power supply may not always be detected if a power voltage from another circuit is applied.
- 4103Error code
- 4106Error codeTransmission power supply fault Error detail FF (Outdoor unit): Transmission power output failure | Transmission power supply fault Other than Error Detail Code FF (Outdoor unit): Transmission power reception failure
- 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 codeIndoor unit fan operation error: 1) During operation, it has been continuously detected for 100 seconds that the auxiliary relay (X13) for fan fault detection is not excited.
- 4114Error codeIndoor unit fan motor error: When the fan motor output from the indoor unit circuit board is ON and when the rotation speed input from the fan motor cannot be detected for 30 seconds or more
- 4115Error codePower supply signal sync error: The frequency cannot be determined when the power is switched on.
- 4116Error codeFan rotation speed abnormality Motor abnormality: 1.If the fan rotation speed is detected to 180rpm or lower, or 2000rpm or more during the fan operation in the indoor unit, the unit stops once, turns to anti-restart mode for 3 minutes, and makes fan to stop for 30 seconds. 2.If the fan rotation speed is detected to 180rpm or lower, or 2000rpm or more again when the restart operation after 30 seconds since the fan stops, the unit makes an error stop (fan also stops), and the error code "4116" will appear. [LOSSNAY only] 1.The motor keep running
- 4121Error codeFunction setting error 2.
- 4124Error codeElectric system not operate due to damper abnormality: When the damper is not located at the designated position.
- 4136Error codeSafety shut off valve circuit error: If the shut off valve kit detects an abnormal control signal from safety shut off valve
- 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 codeBreaking of overcurrent (Variable capacity unit): 1 If IDC 103 A peak is detected during inverter operation. 2 If the voltage of the INV board’s sensor circuit input is what it should not normally be.
- 4220Error code(TJMU-A): If Vdc 160V or less is detected during Inverter operation. (S/W detection) | (YJMU-A): If Vdc 289V or less is detected during Inverter operation. (S/W detection) | (TJMU-A): If Vdc 400V is detected during inverter operation. | (YJMU-A): If Vdc 830V is detected during inverter operation. | (TJMU-A): H/W error If only the H/W error logic circuit operates, and no identifiable error is detected. | (YJMU-A): H/W error If only the H/W error logic circuit operates, and no identifiable error is detected. | When Vdc 160 V is detected just before the inverter operation.
- 4225Error codeAbnormal bus voltage drop (Detail code 108): If Vdc 160V or less is detected during Inverter operation. (S/W detection) | Abnormal bus voltage drop (Detail code 108): If Vdc 289V or less is detected during Inverter operation. (S/W detection) | Abnormal bus voltage rise (Detail code 109): If Vdc 400V is detected during inverter operation. | Abnormal bus voltage rise (Detail code 109): If Vdc 830V is detected during inverter operation. | Logic error (Detail code 111): H/W error If only the H/W error logic circuit operates, and no identifiable error is detected. | Low bus voltage at startup (Detail code 131): When Vdc 160 V is detected just before the inverter operation.
- 4226Error codeAbnormal bus voltage drop (Detail code 108): If Vdc 160V or less is detected during Inverter operation. (S/W detection) | Abnormal bus voltage drop (Detail code 108): If Vdc 289V or less is detected during Inverter operation. (S/W detection) | Abnormal bus voltage rise (Detail code 109): If Vdc 400V is detected during inverter operation. | Abnormal bus voltage rise (Detail code 109): If Vdc 830V is detected during inverter operation. | VDC error (Detail code 110): Bus voltage abnormality If Vdc 400V or Vdc 160V is detected. (H/W detection) | Logic error (Detail code 111): H/W error If only the H/W error logic circuit operates, and no identifiable error is detected. | Low bus voltage at startup (Detail code 131): When Vdc 160 V is detected just before the inverter operation.
- 4230Error codeHeatsink overheat protection (Detail code 125): When the heat sink temperature (THHS) remains at or above TOH is detected. models TOH INV20Y 105°C Using INV30YC 94°C | DCL temperature fault (Detail code 126)(outdoor unit): When DCL temperature that equals or exceeds 170˚C is detected (applicable to INV30YC only)
- 4235Error codeHeatsink overheat protection (Detail code 125): When the heat sink temperature (THHS) remains at or above TOH is detected. models TOH INV board 100°C [212°F] Fan board 100°C [212°F]
- 4236Error codeHeatsink overheat protection (Detail code 125): When the heat sink temperature (THHS) remains at or above TOH is detected. models TOH INV board 100°C [212°F] Fan board 100°C [212°F]