TCL
TCL 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
The indoor unit displays E0 and will not start cooling or heating.
Indoor Unit EEPROM / Main PCB Communication Fault
E1
The indoor unit shows E1 and stops operation shortly after starting.
Indoor / Outdoor Communication Failure
E2
The unit displays E2 and stops cooling; the indoor fan may continue running.
Indoor Evaporator Coil Freeze Protection / Anti-freeze Protection
E3
The indoor unit shows E3 and stops cooling; the outdoor unit may shut down.
Refrigerant System Overload / High Pressure Protection
E4
Unit displays E4 and stops heating or cooling; it may restart after some time.
Compressor Discharge Overheat Protection
E5
Indoor unit shows E5 and stops; this may relate to overcurrent or voltage issues.
Compressor Overcurrent / Overload Protection
E6
Indoor unit displays E6 and stops; operation is often intermittent.
Indoor Fan Motor Fault / Feedback Error
E7
Indoor unit shows E7 and does not respond to mode changes.
Mode Conflict / Indoor-Outdoor Mode Mismatch
E8
Unit displays E8 and stops; this may relate to overload or high temperature.
Indoor Unit Overload / Overheat Protection
E9
Indoor unit shows E9 and may shut down unexpectedly.
Water Level Protection / Full Drain Pan Alarm (for some TCL models)
F0
TCL portable or split AC shows F0 and stops cooling.
Low Refrigerant / Refrigerant Leakage Protection
F1
Indoor display shows F1 and the unit stops or runs erratically.
Indoor Ambient Temperature Sensor Fault
F2
Indoor unit shows F2 and may stop cooling or heating.
Evaporator Coil Temperature Sensor Fault
F3
Unit displays F3 and may stop heating or cooling.
Outdoor Ambient Temperature Sensor Fault
F4
Display shows F4, and the outdoor unit may not run correctly.
Outdoor Condenser Coil Temperature Sensor Fault
F5
The unit shows F5 and may limit operation in extreme temperatures.
Outdoor Unit Overload / High Ambient Protection
F6
The indoor unit displays F6, and cooling capacity is reduced.
Indoor Fan Speed Out of Control / Feedback Error
F7
The unit shows F7 and may not start the compressor.
Outdoor Fan Motor Fault / Feedback Error
F8
The display shows F8, and the unit may limit operation or shut down.
Indoor Unit Overheat / Overload Protection (Alternate Code)
F9
The unit shows F9 and may not control the temperature correctly.
Indoor Humidity / Additional Sensor Fault (model-dependent)
H0
The display shows H0, and the unit may not start the compressor.
EEPROM Parameter Error / PCB Configuration Fault
H1
The unit shows H1 and does not blow warm air immediately in heating mode.
Defrost / Preheating Indication (often normal operation)
H2
The display shows H2, and heating performance is poor.
Defrost Protection / Outdoor Coil Overheat (model-dependent)
H3
The unit shows H3 and stops; the compressor may be very hot.
Compressor Overload Protection / Overheat
H4
Display shows H4, and the unit will not run normally.
Inverter Module / Drive Error
H5
Unit shows H5, and the compressor does not start.
Current Protection / IPM Protection
P0
TCL portable AC shows P0 and stops cooling.
Low Voltage Protection / Power Supply Error
P1
TCL portable AC displays P1 and stops; the water full indicator may be on.
Full Condensate Tank / Water Level Protection
P2
Portable AC shows P2 and stops cooling intermittently.
High Temperature Protection / Compressor Overheat (portable models)
P4
Portable AC displays P4 and stops.
Drain Pump Fault (for pump-equipped models)
Symptom
Air conditioner does not turn on at all; no lights or display.
No Power / Power Supply Failure
Symptom
Air conditioner runs but does not cool the room effectively.
Insufficient Cooling Capacity / Performance Degradation
Symptom
Burning or electrical smell from indoor or outdoor unit
Overheating Electrical Component / Insulation Burn
Symptom
Frost or ice forming on the indoor evaporator coil
Evaporator Icing / Low Airflow or Refrigerant Issue
Symptom
Indoor unit vibrates excessively and transmits noise to the wall
Excessive Vibration / Mounting Issue
Symptom
Loud humming or grinding noise from outdoor unit
Outdoor Mechanical Noise / Fan or Compressor Issue
Symptom
Loud rattling or buzzing noise from indoor unit during operation
Indoor Mechanical Noise / Loose Components
Symptom
Outdoor unit coil covered in thick ice during heating mode
Outdoor Coil Icing / Defrost Failure
Symptom
Remote control does not operate the TCL air conditioner
Remote Control / IR Receiver Failure
Symptom
Unit blows air, but the temperature does not change between modes.
Reversing Valve Failure (Heat Pump Models)
Symptom
Unit frequently turns on and off (short cycling)
Short Cycling / Control or Sizing Issue
Symptom
Unit powers on, but the compressor and outdoor fan never start.
Compressor Not Starting / Control Signal Failure
Symptom
Unpleasant musty or moldy smell when the air conditioner starts
Biological Contamination / Mold in Evaporator and Drain
Symptom
Water dripping from the front of the indoor unit or from the air outlet.
Indoor Water Leakage / Drainage Failure
Symptom
Water leaking from the outdoor unit base or around connections
Outdoor Water Leakage / Defrost or Condensate Drain Issue
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| E0 |
The indoor unit displays E0 and will not start cooling or heating.
|
Indoor Unit EEPROM / Main PCB Communication Fault | View Details |
| E1 |
The indoor unit shows E1 and stops operation shortly after starting.
|
Indoor / Outdoor Communication Failure | View Details |
| E2 |
The unit displays E2 and stops cooling; the indoor fan may continue running.
|
Indoor Evaporator Coil Freeze Protection / Anti-freeze Protection | View Details |
| E3 |
The indoor unit shows E3 and stops cooling; the outdoor unit may shut down.
|
Refrigerant System Overload / High Pressure Protection | View Details |
| E4 |
Unit displays E4 and stops heating or cooling; it may restart after some time.
|
Compressor Discharge Overheat Protection | View Details |
| E5 |
Indoor unit shows E5 and stops; this may relate to overcurrent or voltage issues.
|
Compressor Overcurrent / Overload Protection | View Details |
| E6 |
Indoor unit displays E6 and stops; operation is often intermittent.
|
Indoor Fan Motor Fault / Feedback Error | View Details |
| E7 |
Indoor unit shows E7 and does not respond to mode changes.
|
Mode Conflict / Indoor-Outdoor Mode Mismatch | View Details |
| E8 |
Unit displays E8 and stops; this may relate to overload or high temperature.
|
Indoor Unit Overload / Overheat Protection | View Details |
| E9 |
Indoor unit shows E9 and may shut down unexpectedly.
|
Water Level Protection / Full Drain Pan Alarm (for some TCL models) | View Details |
| F0 |
TCL portable or split AC shows F0 and stops cooling.
|
Low Refrigerant / Refrigerant Leakage Protection | View Details |
| F1 |
Indoor display shows F1 and the unit stops or runs erratically.
|
Indoor Ambient Temperature Sensor Fault | View Details |
| F2 |
Indoor unit shows F2 and may stop cooling or heating.
|
Evaporator Coil Temperature Sensor Fault | View Details |
| F3 |
Unit displays F3 and may stop heating or cooling.
|
Outdoor Ambient Temperature Sensor Fault | View Details |
| F4 |
Display shows F4, and the outdoor unit may not run correctly.
|
Outdoor Condenser Coil Temperature Sensor Fault | View Details |
| F5 |
The unit shows F5 and may limit operation in extreme temperatures.
|
Outdoor Unit Overload / High Ambient Protection | View Details |
| F6 |
The indoor unit displays F6, and cooling capacity is reduced.
|
Indoor Fan Speed Out of Control / Feedback Error | View Details |
| F7 |
The unit shows F7 and may not start the compressor.
|
Outdoor Fan Motor Fault / Feedback Error | View Details |
| F8 |
The display shows F8, and the unit may limit operation or shut down.
|
Indoor Unit Overheat / Overload Protection (Alternate Code) | View Details |
| F9 |
The unit shows F9 and may not control the temperature correctly.
|
Indoor Humidity / Additional Sensor Fault (model-dependent) | View Details |
| H0 |
The display shows H0, and the unit may not start the compressor.
|
EEPROM Parameter Error / PCB Configuration Fault | View Details |
| H1 |
The unit shows H1 and does not blow warm air immediately in heating mode.
|
Defrost / Preheating Indication (often normal operation) | View Details |
| H2 |
The display shows H2, and heating performance is poor.
|
Defrost Protection / Outdoor Coil Overheat (model-dependent) | View Details |
| H3 |
The unit shows H3 and stops; the compressor may be very hot.
|
Compressor Overload Protection / Overheat | View Details |
| H4 |
Display shows H4, and the unit will not run normally.
|
Inverter Module / Drive Error | View Details |
| H5 |
Unit shows H5, and the compressor does not start.
|
Current Protection / IPM Protection | View Details |
| P0 |
TCL portable AC shows P0 and stops cooling.
|
Low Voltage Protection / Power Supply Error | View Details |
| P1 |
TCL portable AC displays P1 and stops; the water full indicator may be on.
|
Full Condensate Tank / Water Level Protection | View Details |
| P2 |
Portable AC shows P2 and stops cooling intermittently.
|
High Temperature Protection / Compressor Overheat (portable models) | View Details |
| P4 |
Portable AC displays P4 and stops.
|
Drain Pump Fault (for pump-equipped models) | View Details |
| – |
Air conditioner does not turn on at all; no lights or display.
|
No Power / Power Supply Failure | View Details |
| – |
Air conditioner runs but does not cool the room effectively.
|
Insufficient Cooling Capacity / Performance Degradation | View Details |
| – |
Burning or electrical smell from indoor or outdoor unit
|
Overheating Electrical Component / Insulation Burn | View Details |
| – |
Frost or ice forming on the indoor evaporator coil
|
Evaporator Icing / Low Airflow or Refrigerant Issue | View Details |
| – |
Indoor unit vibrates excessively and transmits noise to the wall
|
Excessive Vibration / Mounting Issue | View Details |
| – |
Loud humming or grinding noise from outdoor unit
|
Outdoor Mechanical Noise / Fan or Compressor Issue | View Details |
| – |
Loud rattling or buzzing noise from indoor unit during operation
|
Indoor Mechanical Noise / Loose Components | View Details |
| – |
Outdoor unit coil covered in thick ice during heating mode
|
Outdoor Coil Icing / Defrost Failure | View Details |
| – |
Remote control does not operate the TCL air conditioner
|
Remote Control / IR Receiver Failure | View Details |
| – |
Unit blows air, but the temperature does not change between modes.
|
Reversing Valve Failure (Heat Pump Models) | View Details |
| – |
Unit frequently turns on and off (short cycling)
|
Short Cycling / Control or Sizing Issue | View Details |
| – |
Unit powers on, but the compressor and outdoor fan never start.
|
Compressor Not Starting / Control Signal Failure | View Details |
| – |
Unpleasant musty or moldy smell when the air conditioner starts
|
Biological Contamination / Mold in Evaporator and Drain | View Details |
| – |
Water dripping from the front of the indoor unit or from the air outlet.
|
Indoor Water Leakage / Drainage Failure | View Details |
| – |
Water leaking from the outdoor unit base or around connections
|
Outdoor Water Leakage / Defrost or Condensate Drain Issue | View Details |
No matching codes found
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