Klimaire
Klimaire 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 displays E0 and will not respond to remote commands or front panel buttons.
Indoor Unit EEPROM / Main PCB Communication Fault
E1
Indoor unit shows E1 and the system will not start cooling or heating.
Indoor / Outdoor Communication Failure
E2
Indoor unit displays E2 and the unit stops cooling; indoor fan may continue to run.
Indoor Evaporator Coil Freeze Protection / Anti-freeze Sensor Fault
E3
Indoor unit shows E3 and cooling or heating stops; outdoor unit may shut down.
Outdoor Compressor Overload / High-Pressure Protection
E4
Indoor unit displays E4 and stops heating; often occurs in heat pump mode during cold weather.
Defrost Protection / Outdoor Coil Temperature Fault
E5
Indoor unit shows E5 and the system shuts down shortly after starting.
Overcurrent Protection / Compressor Overload
E6
Indoor unit displays E6 and the system may run intermittently or not at all.
Indoor Fan Motor Fault / Feedback Error
E7
Indoor unit shows E7 and the system may not switch between cooling and heating properly.
Reversing Valve / Mode Conflict Fault
E8
Indoor unit displays E8 and may shut down or limit operation.
Indoor Overheat / High Temperature Protection
E9
Indoor unit shows E9 and may stop operating; sometimes associated with condensate issues.
Water Overflow / Drain Pan Full Protection (for models with float switch)
F0
Indoor unit displays F0 and cooling capacity is reduced or unit stops.
Refrigerant Undercharge / Low Refrigerant Protection
F1
Indoor unit shows F1 and may continue to run with poor temperature control.
Indoor Ambient Temperature Sensor (T1) Fault
F2
Indoor unit displays F2 and may shut down or operate erratically.
Indoor Evaporator Coil Temperature Sensor (T2) Fault
F3
Indoor unit shows F3 and may stop heating or cooling.
Outdoor Ambient Temperature Sensor (T3) Fault
F4
Indoor unit displays F4 and the system may shut down, especially in heating mode.
Outdoor Condenser Coil Temperature Sensor (T4) Fault
F5
Indoor unit shows F5 and the unit may not respond correctly to remote control commands.
Indoor Display Board / Communication Fault
H1
Indoor unit shows H1 and heating is temporarily unavailable; fan may stop.
Preheating / Defrost Mode Indication (Protection, not a fault)
H3
Indoor unit displays H3 and the system shuts down, often after running for some time.
Compressor Overload Protection (Inverter Module Overheat)
H5
Indoor unit shows H5 and the system will not operate.
IPM (Intelligent Power Module) Protection / Inverter Module Fault
P0
Indoor unit displays P0 and the compressor may not start or may run at limited capacity.
Inverter Module / DC Bus Voltage Protection
P1
Indoor unit shows P1 and operation is limited or stopped.
High/Low Voltage Protection
P2
Indoor unit displays P2 and cooling may be reduced or stopped.
High Discharge Temperature Protection
P4
Indoor unit shows P4 and the system may not operate.
Inverter Module Overheat / IPM Temperature Protection
Symptom
Breaker trips when the Klimaire air conditioner starts or shortly after.
Overcurrent / Short Circuit
Symptom
Foul or burning electrical smell from indoor or outdoor unit during operation.
Overheating Electrical Component
Symptom
Indoor fan runs but outdoor unit does not start; no cooling or heating.
Outdoor Unit Non-Start / Contactor or Control Failure
Symptom
Indoor unit blows warm air in COOL mode or cool air in HEAT mode.
Mode Reversal / Reversing Valve or Control Fault
Symptom
Indoor unit displays lights but does not respond to any buttons on the remote or front panel.
Control Lock / Child Lock or Keypad Failure
Symptom
Indoor unit fan does not run, but the unit powers on and may show normal display.
Indoor Fan Non-Operation
Symptom
Indoor unit makes loud rattling, buzzing, or squealing noises during operation.
Indoor Mechanical Noise / Blower or Panel Vibration
Symptom
Indoor unit runs but no cooling; air from vents is room temperature or only slightly cooler.
Loss of Cooling Capacity / Refrigerant Undercharge
Symptom
Outdoor fan does not run while compressor is operating; outdoor unit becomes very hot.
Outdoor Fan Failure
Symptom
Outdoor unit is very loud during operation; rattling, buzzing, or grinding noises are heard.
Outdoor Mechanical Noise / Fan or Compressor Issue
Symptom
Remote control does not operate the indoor unit; unit only responds to manual buttons if available.
Remote Control / IR Receiver Failure
Symptom
Strong musty or moldy odor when the Klimaire air conditioner starts or runs.
Biological Growth on Evaporator Coil and Drain Pan
Symptom
Unit does not power on at all; no lights on indoor display and no response to remote.
No Power / Control Circuit Dead
Symptom
Unit runs but room humidity remains high; air feels clammy even when temperature is low.
Poor Dehumidification Performance
Symptom
Unit short cycles: turns on and off frequently, running only a few minutes at a time.
Short Cycling / Control or Capacity Mismatch
Symptom
Water dripping from the front or bottom of the indoor unit onto the wall or floor.
Indoor Unit Water Leak / Condensate Drain Blockage
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| E0 |
Indoor unit displays E0 and will not respond to remote commands or front panel buttons.
|
Indoor Unit EEPROM / Main PCB Communication Fault | View Details |
| E1 |
Indoor unit shows E1 and the system will not start cooling or heating.
|
Indoor / Outdoor Communication Failure | View Details |
| E2 |
Indoor unit displays E2 and the unit stops cooling; indoor fan may continue to run.
|
Indoor Evaporator Coil Freeze Protection / Anti-freeze Sensor Fault | View Details |
| E3 |
Indoor unit shows E3 and cooling or heating stops; outdoor unit may shut down.
|
Outdoor Compressor Overload / High-Pressure Protection | View Details |
| E4 |
Indoor unit displays E4 and stops heating; often occurs in heat pump mode during cold weather.
|
Defrost Protection / Outdoor Coil Temperature Fault | View Details |
| E5 |
Indoor unit shows E5 and the system shuts down shortly after starting.
|
Overcurrent Protection / Compressor Overload | View Details |
| E6 |
Indoor unit displays E6 and the system may run intermittently or not at all.
|
Indoor Fan Motor Fault / Feedback Error | View Details |
| E7 |
Indoor unit shows E7 and the system may not switch between cooling and heating properly.
|
Reversing Valve / Mode Conflict Fault | View Details |
| E8 |
Indoor unit displays E8 and may shut down or limit operation.
|
Indoor Overheat / High Temperature Protection | View Details |
| E9 |
Indoor unit shows E9 and may stop operating; sometimes associated with condensate issues.
|
Water Overflow / Drain Pan Full Protection (for models with float switch) | View Details |
| F0 |
Indoor unit displays F0 and cooling capacity is reduced or unit stops.
|
Refrigerant Undercharge / Low Refrigerant Protection | View Details |
| F1 |
Indoor unit shows F1 and may continue to run with poor temperature control.
|
Indoor Ambient Temperature Sensor (T1) Fault | View Details |
| F2 |
Indoor unit displays F2 and may shut down or operate erratically.
|
Indoor Evaporator Coil Temperature Sensor (T2) Fault | View Details |
| F3 |
Indoor unit shows F3 and may stop heating or cooling.
|
Outdoor Ambient Temperature Sensor (T3) Fault | View Details |
| F4 |
Indoor unit displays F4 and the system may shut down, especially in heating mode.
|
Outdoor Condenser Coil Temperature Sensor (T4) Fault | View Details |
| F5 |
Indoor unit shows F5 and the unit may not respond correctly to remote control commands.
|
Indoor Display Board / Communication Fault | View Details |
| H1 |
Indoor unit shows H1 and heating is temporarily unavailable; fan may stop.
|
Preheating / Defrost Mode Indication (Protection, not a fault) | View Details |
| H3 |
Indoor unit displays H3 and the system shuts down, often after running for some time.
|
Compressor Overload Protection (Inverter Module Overheat) | View Details |
| H5 |
Indoor unit shows H5 and the system will not operate.
|
IPM (Intelligent Power Module) Protection / Inverter Module Fault | View Details |
| P0 |
Indoor unit displays P0 and the compressor may not start or may run at limited capacity.
|
Inverter Module / DC Bus Voltage Protection | View Details |
| P1 |
Indoor unit shows P1 and operation is limited or stopped.
|
High/Low Voltage Protection | View Details |
| P2 |
Indoor unit displays P2 and cooling may be reduced or stopped.
|
High Discharge Temperature Protection | View Details |
| P4 |
Indoor unit shows P4 and the system may not operate.
|
Inverter Module Overheat / IPM Temperature Protection | View Details |
| – |
Breaker trips when the Klimaire air conditioner starts or shortly after.
|
Overcurrent / Short Circuit | View Details |
| – |
Foul or burning electrical smell from indoor or outdoor unit during operation.
|
Overheating Electrical Component | View Details |
| – |
Indoor fan runs but outdoor unit does not start; no cooling or heating.
|
Outdoor Unit Non-Start / Contactor or Control Failure | View Details |
| – |
Indoor unit blows warm air in COOL mode or cool air in HEAT mode.
|
Mode Reversal / Reversing Valve or Control Fault | View Details |
| – |
Indoor unit displays lights but does not respond to any buttons on the remote or front panel.
|
Control Lock / Child Lock or Keypad Failure | View Details |
| – |
Indoor unit fan does not run, but the unit powers on and may show normal display.
|
Indoor Fan Non-Operation | View Details |
| – |
Indoor unit makes loud rattling, buzzing, or squealing noises during operation.
|
Indoor Mechanical Noise / Blower or Panel Vibration | View Details |
| – |
Indoor unit runs but no cooling; air from vents is room temperature or only slightly cooler.
|
Loss of Cooling Capacity / Refrigerant Undercharge | View Details |
| – |
Outdoor fan does not run while compressor is operating; outdoor unit becomes very hot.
|
Outdoor Fan Failure | View Details |
| – |
Outdoor unit is very loud during operation; rattling, buzzing, or grinding noises are heard.
|
Outdoor Mechanical Noise / Fan or Compressor Issue | View Details |
| – |
Remote control does not operate the indoor unit; unit only responds to manual buttons if available.
|
Remote Control / IR Receiver Failure | View Details |
| – |
Strong musty or moldy odor when the Klimaire air conditioner starts or runs.
|
Biological Growth on Evaporator Coil and Drain Pan | View Details |
| – |
Unit does not power on at all; no lights on indoor display and no response to remote.
|
No Power / Control Circuit Dead | View Details |
| – |
Unit runs but room humidity remains high; air feels clammy even when temperature is low.
|
Poor Dehumidification Performance | View Details |
| – |
Unit short cycles: turns on and off frequently, running only a few minutes at a time.
|
Short Cycling / Control or Capacity Mismatch | View Details |
| – |
Water dripping from the front or bottom of the indoor unit onto the wall or floor.
|
Indoor Unit Water Leak / Condensate Drain Blockage | View Details |
No matching codes found
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