Mitsubishi Electric PQRY 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 abnormality (Heat source unit) ✻ For the check code on: 1. 2. When 120 °C or higher discharge is detected again (the second time) within 30 minutes after the first stop of heat source unit, mode is changed to restart mode after 3 minutes, then the heat source unit restarts. 3. When 120˚C or more discharge is detected, again (the third time) within 30 | Discharge temperature abnormality (Heat source unit)
- 1111Error codeLow pressure saturation temperature sensor abnormality (TH2) trouble temperature saturation pressure Low: 1. 2. When -40¡C or less temp. is detected again (the second time) within 30 minutes after stop of heat source unit, error stop is observed with code Nos. 1111 displayed. 3. When -40¡C or less temperature is detected 30 or more minutes after stop of heat source unit, the stop is regarde
- 1112Error codeLiquid level detecting temperature sensor trouble abnormality (TH4) temperature saturation pressure: sensor (TH2) or liquid level detecting temperature sensors (TH3, TH4) detects -40˚C or less (the first time) during operations, heat source unit stops once, mode is changed to restart mode after 3 minutes, then the heat source unit restarts. 2. When -40˚C or less temp. is detected again (the second time) within 30 minutes after stop of heat source unit, error stop is observed with code Nos. “1111,” “1112,” or “1113” displayed. 3. When -40˚C or less temperature is detected 30 or more minutes afte
- 1113Error codeLiquid Low level detecting 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.
- 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 (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 codeRefrigerant overcharge: An error can be detected by the discharge temperature superheat and by the liquid level of an accumulator shown below. 1.If the liquid level of an accumulator AL=2 (overflow level) is detected during operation (the first detection), the heat source unit stops at once, turns to anti-restart mode for 3 minutes, and restarts after 3 minutes automatically. 2.If the liquid level of an accumulator AL=2 (overflow level) is detected again within 30 minutes after first stop of the heat source unit (the s
- 1501Error codeLacked refrigerant abnormality 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. F<60Hz and TH10>85°C 1 continuously for 60 minutes. F<60Hz and TH10>95°C 2 continuously for 15 minutes. F 60Hz and TH10>100°C 3 continuously for 60 minutes. F 60Hz and TH10>110°C 4 continuously for 15 minutes. 2. If the temperature rises again as above within 2 hours after the heat source unit is stopped (2nd detection), an error stop is performed, a
- 1505Error codeSuction pressure abnormality: Judging that the state when the suction pressure reaches 0kg/ cm2G (0MPa) during compressor operation indicates high pressure by the discharge temperature and low pressure saturation temperature, the back-up control by gas bypassing will be conducted.
- 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 water inlet temperature of 5˚C or below or 50˚C or above is detected (first detection) during operation, the heat source unit comes to a stop, goes into the 3minute restart prevention mode, and restarts in 3 minutes. 2. If water inlet temperature of 5˚C or below or 50˚C or above is detected again (second detection) within 30 minutes of the first occurrence (as described under item 1 above), the unit comes to an abnormal stop and code “2134” is displayed.
- 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-all 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
- 2600Error codeWater leakage: [194°F] or higher Open : detectable at -40°C [-40°F] or lower - Water such
- 2601Error codeWater supply cutoff 2. Cause, check method and remedy
- 2602Error codeFunction setting error 2. Cause, check method and remedy
- 3152Error codeAbnormal temperature inside the Inverter control box: 1. If the temperature inside the control box is detected to be 70°C or more during operation (the first time it is detected), the heat source unit is stopped temporarily, the system enters the 3-minute restart prevention mode, then restarts the heat source unit after 3 minutes. 2. If the temperature inside the control box is detected to be 70°C or more during operation (the second time it is detected) again within 30 minutes after the heat source unit stops according to 1. above, an abnormal sto
- 4102Error codeThe L3 phase current is outside of the specified range. When an open phase is detected (L2-phase or N-phase in the power supply) is detected at the start of operation. The open phase of the power supply may not always be detected if a power voltage from another circuit is applied.
- 4103Error codeReverse phase 1.The: operation cannot be started because of the reserve phase of one of the power lines (R, S, T).
- 4106Error code<Transmission power supply fault error detail FF (Heat source unit)>: Transmission power output failure
- 4109Error codeIndoor unit fan operation error: During operation, it has been continuously detected for 100 seconds that the auxiliary relay (X13) for fan fault detection is not excited.
- 4115Error codePower supply sync signal abnoramlity: 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 codeRPM error Motor abnormality: [PKFY-AM only] 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.
- 4124Error codeElectric system not operate due to damper abnormality: When the damper is not located at the designated position.
- 4200Error codeVDC sensor/circuit abnormality: 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: 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 codeAbnormal 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 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 289 V is detected just before the inverter operation.
- 4230Error code(H/W detection) If only the H/W error logic circuit operates, and no identifiable error is detected. <In the case of 4230> When the heat sink temperature (THHS1) 95˚C is detected. “ the inverter, refer to 7. Inverter and
- 4240Error codeOvercurrent protection: 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 error (Detail code 101): Overcurrent is detected by the overcurrent detection resistor (RSH) on the INV board. | Instantaneous overcurrent (Detail code 106) Overcurrent (effective value) (Detail code 107): When a DCL overcurrent is detected by the current sensor. Refer to the relevant pages for the details of model names and the specified values. | Overcurrent error due to short-circuited motor (Detail code 105): When a short is detected on the load side just before starting the inverter operation.
- 4260Error codeCooling fan abnormality: When the DC bus current (DCCT) 200A or more is detected When the DC bus current abnormality VDC 350V or more or VDC 190V or less is detected When the heat sink temperature (THHS1) 60°C [140°F] or more is detected for 10 or more minutes at inverter startup
- 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 codeCooling heat exchanger of INV (THINV): of the thermistor. 2.When a short or an open of the thermistor is detected just before the restart of the heat source unit, the heat source unit makes an error stop, and the error code "5101", "5103", "5104", "5105", "5106" or "5107" will appear. 3.During 3-minute antirestart mode, preliminary errors will be displayed on the LED display. 4.A short or an open described above is not detected for 10 minutes after the compressor start, during defrost mode, or for 3 minutes after defrost mode.
- 5108Error codeWater outlet temperature sensor (TH8) 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
- 5109Error codeCS circuit Thermal (TH9): after the compressor starts, or for 3 minutes during defrosting or after recovery following defrosting.
- 5110Error codeRadiator panel temperature sensor abnormality Error details 01: Compressor INV side: THHS open or shorting is detected just before starting the inverter or during operation.
- 5111Error codeLiquid inlet (TH11) controller) Bypass outlet (BC (TH12) abnormality Bypass inlet (TH15) sensor Thermal Intermediate section (TH16): 1. When short (high temp. inlet) or open (low temperature inlet) of thermistor is detected during operation, error stop will be commenced displaying “5111” or “5112”, “5113” or “5114”, or “5115” or “5116. 2. The above detectection is not made during defrostig and 3minute after changing operation mode.
- 5112Error codeComponent cooler heat exchanger outlet temperature sensor (THINV) 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 | Bypass outlet temperature sensor (TH12) fault (BC controller): If a shorted (high temperature intake) or open (low temperature intake) thermistor (TH11, TH12, TH15, or TH16) is detected during operation, the unit makes an error stop, and an error code "5111," "5112," "5115," or "5116" appears on the display. Detection of a shortor open-circuit as described above is suspended for 3 minutes after the operation mode is changed.
- 5115Error codeLEV3 outlet temperature sensor (TH15) fault (BC controller): If a shorted (high temperature intake) or open (low temperature intake) thermistor (TH11, TH12, TH15, or TH16) is detected during operation, the unit makes an error stop, and an error code "5111," "5112," "5115," or "5116" appears on the display. Detection of a shortor open-circuit as described above is suspended for 3 minutes after the operation mode is changed.
- 5116Error codeLEV3 inlet temperature sensor (TH16) fault (BC controller): If a shorted (high temperature intake) or open (low temperature intake) thermistor (TH11, TH12, TH15, or TH16) is detected during operation, the unit makes an error stop, and an error code "5111," "5112," "5115," or "5116" appears on the display. Detection of a shortor open-circuit as described above is suspended for 3 minutes after the operation mode is changed.
- 5201Error codeHigh-pressure sensor fault (63HS1): If the high pressure sensor detects 0.098MPa [14psi] or less during the operation, the heat source unit stops once, turns to anti-restart mode for 3 minutes, and restarts after 3 minutes when the detected high pressure sensor is 0.098MPa [14psi] or more. If the high pressure sensor detects 0.098MPa [14psi] or less just before the restart, the heat source unit makes an error stop, and the error code "5201" will appear. During 3-minute antirestart mode, preliminary errors will be displayed on t | High-pressure sensor fault (BC controller PS1): When a pressure sensor reading of 4.06 MPa [589 psi] or above OR 0.98Mpa[142psi] or below is detected, error codes "5201" OR "5203" will appear. The unit will continue its operation by using other sensors as a backup.