NewAir
NewAir 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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C1
Unit displays C1 and may not respond to remote control.
Remote Control Receiver / Communication Error
C2
Display shows C2; unit may operate but with incorrect temperature readings.
Calibration / Sensor Offset Error
E1
Unit will not run; display shows E1 shortly after power-on.
Room Temperature Sensor (Thermistor) Fault
E2
Unit stops cooling and displays E2; fan may still run.
Evaporator Coil Temperature Sensor Fault
E3
Compressor does not start; display shows E3 after a short delay.
Compressor Discharge / High-Temperature Sensor Fault
E4
Unit shuts down and displays E4; may occur during defrost or in low ambient conditions.
Defrost / Frost Protection Sensor Fault or Abnormal Frost Condition
E5
Unit stops cooling and displays E5; may occur after running for some time.
Overcurrent / Overload Protection Trip
E6
Display shows E6 and unit may not respond to remote or control inputs properly.
Communication Error Between Display Board and Main Control PCB
E7
Unit displays E7 and may not switch modes correctly (cool, fan, dehumidify).
Mode Control or EEPROM Configuration Error
E8
Unit shuts down and displays E8; may be accompanied by very low airflow or icing.
Overload / Overheat Protection or Fan Motor Fault
E9
Display shows E9 and unit may stop cooling or shut down intermittently.
EEPROM / Memory Error on Main Control PCB
F1
Unit beeps and displays F1; may not start cooling.
Indoor Ambient Temperature Sensor Out of Range
F2
Display shows F2; unit may run fan but not cool properly.
Evaporator Coil Sensor Out of Range
F3
Unit displays F3 and may shut down compressor prematurely.
Condenser Coil Temperature Sensor Fault
F4
Display shows F4; unit may not respond to remote or keypad correctly.
Indoor Fan Motor Feedback / Hall Sensor Error
F5
Unit displays F5 and may shut down unexpectedly during operation.
High-Pressure Protection / Overheat Fault
H1
Display shows H1; unit may run fan but not cool or heat (on heat-capable models).
Indoor Coil High Temperature Protection
H3
Unit displays H3 and shuts down compressor; fan may continue.
Compressor Overload Protection
H5
Display shows H5; unit may not start compressor.
IPM / Inverter Module Protection (on inverter models)
H8
Unit displays H8 and stops cooling; may indicate full internal water tank on portable models.
Full Condensate Tank / Water Level Switch Activated
P1
Display shows P1 and unit stops cooling; often on portable models with self-evaporation.
High Water Level Protection / Internal Pump or Tank Fault
P2
Display shows P2; unit may continue to run fan but not cool.
Low Temperature / Anti-Freeze Protection
Symptom
Air conditioner will not power on at all; no lights or display.
No Power / Input Power Failure
Symptom
Burning or electrical smell when the unit is running.
Overheating Electrical Component
Symptom
Clicking noise but fan does not start or starts slowly.
Fan Motor Start Failure
Symptom
Control panel buttons do not respond or respond intermittently.
Keypad / User Interface Failure
Symptom
Excessive water collects in the internal tank very quickly; unit shuts off often to be drained.
High Condensate Production / Poor Evaporation
Symptom
High-pitched squealing or grinding noise from the fan area.
Fan Motor or Blower Bearing Wear
Symptom
Loud rattling or vibrating noise during operation.
Mechanical Vibration / Loose Components
Symptom
Musty or moldy odor from the air conditioner when it starts.
Biological Growth in Evaporator and Drain System
Symptom
Remote control does not operate the unit, but the unit works from the panel.
Remote Control / IR Receiver Issue
Symptom
Unit blows warm air instead of cold, even though compressor is running.
Loss of Cooling Capacity / Refrigerant Issue
Symptom
Unit displays temperature or settings erratically; numbers jump or flicker.
Display / Sensor Signal Interference
Symptom
Unit leaks water onto the floor from the base or front.
Condensate Drainage Failure
Symptom
Unit powers on but compressor never starts; only fan runs and no cooling occurs.
Compressor Start Failure
Symptom
Unit runs but airflow from vents is very weak.
Restricted Airflow
Symptom
Unit runs but does not cool the room effectively; air from vents is only slightly cool.
Poor Cooling Performance
Symptom
Unit runs in fan mode but will not switch into cooling mode when COOL is selected.
Mode Control / Compressor Enable Failure
Symptom
Unit trips the household circuit breaker when it starts or shortly after.
Overcurrent / Short Circuit
Symptom
Unit turns on and off frequently (short cycling) without reaching set temperature.
Short Cycling / Improper Thermostat Control
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| C1 |
Unit displays C1 and may not respond to remote control.
|
Remote Control Receiver / Communication Error | View Details |
| C2 |
Display shows C2; unit may operate but with incorrect temperature readings.
|
Calibration / Sensor Offset Error | View Details |
| E1 |
Unit will not run; display shows E1 shortly after power-on.
|
Room Temperature Sensor (Thermistor) Fault | View Details |
| E2 |
Unit stops cooling and displays E2; fan may still run.
|
Evaporator Coil Temperature Sensor Fault | View Details |
| E3 |
Compressor does not start; display shows E3 after a short delay.
|
Compressor Discharge / High-Temperature Sensor Fault | View Details |
| E4 |
Unit shuts down and displays E4; may occur during defrost or in low ambient conditions.
|
Defrost / Frost Protection Sensor Fault or Abnormal Frost Condition | View Details |
| E5 |
Unit stops cooling and displays E5; may occur after running for some time.
|
Overcurrent / Overload Protection Trip | View Details |
| E6 |
Display shows E6 and unit may not respond to remote or control inputs properly.
|
Communication Error Between Display Board and Main Control PCB | View Details |
| E7 |
Unit displays E7 and may not switch modes correctly (cool, fan, dehumidify).
|
Mode Control or EEPROM Configuration Error | View Details |
| E8 |
Unit shuts down and displays E8; may be accompanied by very low airflow or icing.
|
Overload / Overheat Protection or Fan Motor Fault | View Details |
| E9 |
Display shows E9 and unit may stop cooling or shut down intermittently.
|
EEPROM / Memory Error on Main Control PCB | View Details |
| F1 |
Unit beeps and displays F1; may not start cooling.
|
Indoor Ambient Temperature Sensor Out of Range | View Details |
| F2 |
Display shows F2; unit may run fan but not cool properly.
|
Evaporator Coil Sensor Out of Range | View Details |
| F3 |
Unit displays F3 and may shut down compressor prematurely.
|
Condenser Coil Temperature Sensor Fault | View Details |
| F4 |
Display shows F4; unit may not respond to remote or keypad correctly.
|
Indoor Fan Motor Feedback / Hall Sensor Error | View Details |
| F5 |
Unit displays F5 and may shut down unexpectedly during operation.
|
High-Pressure Protection / Overheat Fault | View Details |
| H1 |
Display shows H1; unit may run fan but not cool or heat (on heat-capable models).
|
Indoor Coil High Temperature Protection | View Details |
| H3 |
Unit displays H3 and shuts down compressor; fan may continue.
|
Compressor Overload Protection | View Details |
| H5 |
Display shows H5; unit may not start compressor.
|
IPM / Inverter Module Protection (on inverter models) | View Details |
| H8 |
Unit displays H8 and stops cooling; may indicate full internal water tank on portable models.
|
Full Condensate Tank / Water Level Switch Activated | View Details |
| P1 |
Display shows P1 and unit stops cooling; often on portable models with self-evaporation.
|
High Water Level Protection / Internal Pump or Tank Fault | View Details |
| P2 |
Display shows P2; unit may continue to run fan but not cool.
|
Low Temperature / Anti-Freeze Protection | View Details |
| – |
Air conditioner will not power on at all; no lights or display.
|
No Power / Input Power Failure | View Details |
| – |
Burning or electrical smell when the unit is running.
|
Overheating Electrical Component | View Details |
| – |
Clicking noise but fan does not start or starts slowly.
|
Fan Motor Start Failure | View Details |
| – |
Control panel buttons do not respond or respond intermittently.
|
Keypad / User Interface Failure | View Details |
| – |
Excessive water collects in the internal tank very quickly; unit shuts off often to be drained.
|
High Condensate Production / Poor Evaporation | View Details |
| – |
High-pitched squealing or grinding noise from the fan area.
|
Fan Motor or Blower Bearing Wear | View Details |
| – |
Loud rattling or vibrating noise during operation.
|
Mechanical Vibration / Loose Components | View Details |
| – |
Musty or moldy odor from the air conditioner when it starts.
|
Biological Growth in Evaporator and Drain System | View Details |
| – |
Remote control does not operate the unit, but the unit works from the panel.
|
Remote Control / IR Receiver Issue | View Details |
| – |
Unit blows warm air instead of cold, even though compressor is running.
|
Loss of Cooling Capacity / Refrigerant Issue | View Details |
| – |
Unit displays temperature or settings erratically; numbers jump or flicker.
|
Display / Sensor Signal Interference | View Details |
| – |
Unit leaks water onto the floor from the base or front.
|
Condensate Drainage Failure | View Details |
| – |
Unit powers on but compressor never starts; only fan runs and no cooling occurs.
|
Compressor Start Failure | View Details |
| – |
Unit runs but airflow from vents is very weak.
|
Restricted Airflow | View Details |
| – |
Unit runs but does not cool the room effectively; air from vents is only slightly cool.
|
Poor Cooling Performance | View Details |
| – |
Unit runs in fan mode but will not switch into cooling mode when COOL is selected.
|
Mode Control / Compressor Enable Failure | View Details |
| – |
Unit trips the household circuit breaker when it starts or shortly after.
|
Overcurrent / Short Circuit | View Details |
| – |
Unit turns on and off frequently (short cycling) without reaching set temperature.
|
Short Cycling / Improper Thermostat Control | View Details |
No matching codes found
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