Royal Clima
Royal Clima Air Conditioners Error Codes
Complete list of fault codes and troubleshooting guides. Use the search below to find your specific error.
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E0
Indoor unit does not respond to the remote, the display shows E0, and the unit will not start cooling or heating.
Indoor Unit EEPROM / Main PCB Communication Error
E1
The indoor unit stops shortly after starting, the display shows E1, and the outdoor unit does not run.
Indoor-Outdoor Communication Failure
E2
The indoor unit runs briefly then stops, the display shows E2, and airflow may be weak or irregular.
Indoor Evaporator Coil Freeze Protection / Anti-freeze Sensor Fault
E3
The outdoor unit stops, the indoor unit may show E3, and cooling/heating stops unexpectedly.
Outdoor Unit Overcurrent / Compressor Overload Protection
E4
The unit stops during operation, the indoor display shows E4, sometimes after long cooling cycles.
High Discharge Temperature / Compressor Overheating
E5
The indoor unit shows E5 and stops; sometimes the outdoor unit does not start at all.
Overvoltage / Undervoltage Protection or Power Supply Error
E6
The indoor unit shows E6, and the compressor may not start or stops shortly after starting.
Compressor Start Failure / Inverter Drive Fault
E7
The indoor unit shows E7, and the louver may not move correctly or the airflow direction cannot be adjusted.
Indoor Louver Motor / Stepper Motor Fault
E8
The indoor unit shows E8, and the unit may stop and restart frequently, sometimes with reduced airflow.
Indoor Fan Motor Fault / Overload
E9
Indoor unit displays E9, sometimes accompanied by water leakage or the unit stopping in cooling mode.
Full Drain Pan / Water Level Sensor Fault (if equipped)
F0
Indoor unit displays F0 and stops cooling; this may occur shortly after startup.
Refrigerant Undercharge / Low Pressure Protection
F1
Indoor unit displays F1; the unit may run but with poor temperature control.
Indoor Ambient Temperature Sensor (Room Sensor) Fault
F2
Indoor unit displays F2; the unit may stop in heating mode or exhibit unstable operation.
Indoor Evaporator Temperature Sensor Fault
F3
Indoor unit displays F3; heating performance is poor or the unit stops in HEAT mode.
Outdoor Coil Temperature Sensor Fault
F4
Indoor unit displays F4; the unit may stop in both cooling and heating modes.
Discharge Pipe Temperature Sensor Fault
F5
Indoor unit displays F5; the outdoor fan may not run or runs erratically.
Outdoor Fan Motor Fault
F6
Indoor unit displays F6; the unit may run at reduced capacity or stop intermittently.
Compressor Current Sensing / IPM Protection Fault
H0
Indoor unit displays H0; the unit may not start or may operate only in fan mode.
EEPROM Parameter Error / Configuration Fault
H1
Indoor unit displays H1, and no warm air is produced at the beginning of heating mode.
Defrost / Preheating Indication (Protection Mode)
H2
Indoor unit displays H2; heating stops and may resume after some time.
High Temperature Protection in Heating / Overheat Protection
H3
Indoor unit displays H3; the unit stops and may not restart until power is cycled.
Compressor Overload Protection / Overheat
H4
Indoor unit displays H4; the unit may not respond to mode changes or may shut down unexpectedly.
Indoor–Outdoor Mismatch / Mode Conflict or EEPROM Error
H5
Indoor unit displays H5; the unit may not start or may shut down shortly after starting.
IPM (Intelligent Power Module) Protection / Inverter Module Fault
P0
Indoor unit displays P0; the compressor may not start or runs at very low capacity.
Inverter Module Protection / DC Bus Voltage Error
P1
Indoor unit displays P1; the unit may stop during operation, especially under heavy load.
High or Low AC Voltage Protection
P2
Indoor unit displays P2; the unit may stop cooling or heating intermittently.
Compressor Temperature Protection / Overheat
P3
Indoor unit displays P3; the unit may limit capacity or shut down under extreme conditions.
Outdoor Low Temperature Protection / Anti-freeze in Heating
Symptom
Air conditioner does not turn on at all; no lights on the indoor unit, and the remote has no effect.
No Power to Indoor Unit
Symptom
Burning or electrical smell from the indoor or outdoor unit during operation.
Overheating Electrical Components
Symptom
Loud rattling, buzzing, or grinding noise from the indoor unit during operation.
Indoor Unit Mechanical Noise
Symptom
Loud vibration or humming from the outdoor unit, sometimes transmitted into the building.
Outdoor Unit Vibration / Mounting Issue
Symptom
Poor cooling performance: the room does not reach the set temperature, run times are long, and the air is weakly cold.
Insufficient Cooling Capacity / Performance Degradation
Symptom
The indoor unit blows air, but frost or ice is forming on the indoor coil or copper pipes.
Evaporator Icing
Symptom
The indoor unit fan does not run, but the display is on, and the compressor may start (outdoor unit runs).
Indoor Fan Not Running
Symptom
The indoor unit frequently turns on and off (short cycling) without reaching the set temperature.
Short Cycling / Incorrect Thermostat Sensing
Symptom
The outdoor fan runs, but the compressor does not start; there is no cooling or heating.
Compressor Not Starting
Symptom
The outdoor unit ices up completely in heating mode and does not defrost properly.
Defrost System Malfunction
Symptom
The remote control does not operate the unit, but the indoor display has power.
Remote Control / IR Receiver Failure
Symptom
The unit does not heat properly in HEAT mode, blowing lukewarm or cold air.
Insufficient Heating Performance
Symptom
The unit powers on, but the compressor and outdoor fan do not start; only the indoor fan runs, and no cooling or heating occurs.
Outdoor Unit Not Starting
Symptom
Unpleasant musty or moldy smell from the indoor unit when it starts.
Microbial Growth on Evaporator and Drain Pan
Symptom
Water dripping from the front of the indoor unit or down the wall during cooling.
Indoor Unit Water Leakage
Symptom
Water dripping from the outdoor unit during heating or cooling, appearing excessive to the user.
Outdoor Condensate / Defrost Water Discharge
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| E0 |
Indoor unit does not respond to the remote, the display shows E0, and the unit will not start cooling or heating.
|
Indoor Unit EEPROM / Main PCB Communication Error | View Details |
| E1 |
The indoor unit stops shortly after starting, the display shows E1, and the outdoor unit does not run.
|
Indoor-Outdoor Communication Failure | View Details |
| E2 |
The indoor unit runs briefly then stops, the display shows E2, and airflow may be weak or irregular.
|
Indoor Evaporator Coil Freeze Protection / Anti-freeze Sensor Fault | View Details |
| E3 |
The outdoor unit stops, the indoor unit may show E3, and cooling/heating stops unexpectedly.
|
Outdoor Unit Overcurrent / Compressor Overload Protection | View Details |
| E4 |
The unit stops during operation, the indoor display shows E4, sometimes after long cooling cycles.
|
High Discharge Temperature / Compressor Overheating | View Details |
| E5 |
The indoor unit shows E5 and stops; sometimes the outdoor unit does not start at all.
|
Overvoltage / Undervoltage Protection or Power Supply Error | View Details |
| E6 |
The indoor unit shows E6, and the compressor may not start or stops shortly after starting.
|
Compressor Start Failure / Inverter Drive Fault | View Details |
| E7 |
The indoor unit shows E7, and the louver may not move correctly or the airflow direction cannot be adjusted.
|
Indoor Louver Motor / Stepper Motor Fault | View Details |
| E8 |
The indoor unit shows E8, and the unit may stop and restart frequently, sometimes with reduced airflow.
|
Indoor Fan Motor Fault / Overload | View Details |
| E9 |
Indoor unit displays E9, sometimes accompanied by water leakage or the unit stopping in cooling mode.
|
Full Drain Pan / Water Level Sensor Fault (if equipped) | View Details |
| F0 |
Indoor unit displays F0 and stops cooling; this may occur shortly after startup.
|
Refrigerant Undercharge / Low Pressure Protection | View Details |
| F1 |
Indoor unit displays F1; the unit may run but with poor temperature control.
|
Indoor Ambient Temperature Sensor (Room Sensor) Fault | View Details |
| F2 |
Indoor unit displays F2; the unit may stop in heating mode or exhibit unstable operation.
|
Indoor Evaporator Temperature Sensor Fault | View Details |
| F3 |
Indoor unit displays F3; heating performance is poor or the unit stops in HEAT mode.
|
Outdoor Coil Temperature Sensor Fault | View Details |
| F4 |
Indoor unit displays F4; the unit may stop in both cooling and heating modes.
|
Discharge Pipe Temperature Sensor Fault | View Details |
| F5 |
Indoor unit displays F5; the outdoor fan may not run or runs erratically.
|
Outdoor Fan Motor Fault | View Details |
| F6 |
Indoor unit displays F6; the unit may run at reduced capacity or stop intermittently.
|
Compressor Current Sensing / IPM Protection Fault | View Details |
| H0 |
Indoor unit displays H0; the unit may not start or may operate only in fan mode.
|
EEPROM Parameter Error / Configuration Fault | View Details |
| H1 |
Indoor unit displays H1, and no warm air is produced at the beginning of heating mode.
|
Defrost / Preheating Indication (Protection Mode) | View Details |
| H2 |
Indoor unit displays H2; heating stops and may resume after some time.
|
High Temperature Protection in Heating / Overheat Protection | View Details |
| H3 |
Indoor unit displays H3; the unit stops and may not restart until power is cycled.
|
Compressor Overload Protection / Overheat | View Details |
| H4 |
Indoor unit displays H4; the unit may not respond to mode changes or may shut down unexpectedly.
|
Indoor–Outdoor Mismatch / Mode Conflict or EEPROM Error | View Details |
| H5 |
Indoor unit displays H5; the unit may not start or may shut down shortly after starting.
|
IPM (Intelligent Power Module) Protection / Inverter Module Fault | View Details |
| P0 |
Indoor unit displays P0; the compressor may not start or runs at very low capacity.
|
Inverter Module Protection / DC Bus Voltage Error | View Details |
| P1 |
Indoor unit displays P1; the unit may stop during operation, especially under heavy load.
|
High or Low AC Voltage Protection | View Details |
| P2 |
Indoor unit displays P2; the unit may stop cooling or heating intermittently.
|
Compressor Temperature Protection / Overheat | View Details |
| P3 |
Indoor unit displays P3; the unit may limit capacity or shut down under extreme conditions.
|
Outdoor Low Temperature Protection / Anti-freeze in Heating | View Details |
| – |
Air conditioner does not turn on at all; no lights on the indoor unit, and the remote has no effect.
|
No Power to Indoor Unit | View Details |
| – |
Burning or electrical smell from the indoor or outdoor unit during operation.
|
Overheating Electrical Components | View Details |
| – |
Loud rattling, buzzing, or grinding noise from the indoor unit during operation.
|
Indoor Unit Mechanical Noise | View Details |
| – |
Loud vibration or humming from the outdoor unit, sometimes transmitted into the building.
|
Outdoor Unit Vibration / Mounting Issue | View Details |
| – |
Poor cooling performance: the room does not reach the set temperature, run times are long, and the air is weakly cold.
|
Insufficient Cooling Capacity / Performance Degradation | View Details |
| – |
The indoor unit blows air, but frost or ice is forming on the indoor coil or copper pipes.
|
Evaporator Icing | View Details |
| – |
The indoor unit fan does not run, but the display is on, and the compressor may start (outdoor unit runs).
|
Indoor Fan Not Running | View Details |
| – |
The indoor unit frequently turns on and off (short cycling) without reaching the set temperature.
|
Short Cycling / Incorrect Thermostat Sensing | View Details |
| – |
The outdoor fan runs, but the compressor does not start; there is no cooling or heating.
|
Compressor Not Starting | View Details |
| – |
The outdoor unit ices up completely in heating mode and does not defrost properly.
|
Defrost System Malfunction | View Details |
| – |
The remote control does not operate the unit, but the indoor display has power.
|
Remote Control / IR Receiver Failure | View Details |
| – |
The unit does not heat properly in HEAT mode, blowing lukewarm or cold air.
|
Insufficient Heating Performance | View Details |
| – |
The unit powers on, but the compressor and outdoor fan do not start; only the indoor fan runs, and no cooling or heating occurs.
|
Outdoor Unit Not Starting | View Details |
| – |
Unpleasant musty or moldy smell from the indoor unit when it starts.
|
Microbial Growth on Evaporator and Drain Pan | View Details |
| – |
Water dripping from the front of the indoor unit or down the wall during cooling.
|
Indoor Unit Water Leakage | View Details |
| – |
Water dripping from the outdoor unit during heating or cooling, appearing excessive to the user.
|
Outdoor Condensate / Defrost Water Discharge | View Details |
No matching codes found
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