Westinghouse AC Error Codes (How to Fix Them)

Westinghouse Electrical Corporation, commonly known as Westinghouse started back in 1886. Originally the company was called Westinghouse Electric and Manufacturing Company but was eventually renamed to match its workings in 1945. The name change was not the only change the company saw, as through the years it has been through several deals and transactions that changed its course and brought it to where it is today.

While the company may have exchanged hands every few years to decades, its range stood strong offering the world reliable air conditioners, freestanding dishwashers, and other household and commercial appliances. From its inception, the company has been focused on offering smart and friendly choices that offer you quick and easy solutions to your everyday problems. Such a product is its air conditioner system that helps you set the desired atmosphere in residential and commercial spaces.

Error codes are a common issue you may face with various appliances in your house or workplace. Rather than panicking, we suggest you grab a pen and paper and note down the code rather than pressing various buttons. This can commonly result in prolonging the issue or even causing more issues in the long run. So why risk damaging your appliance any further, when you will be able to find out the exact issue using the common error code list for Westinghouse air conditioner error codes listed below. Once you know the exact issue you can easily call in a professional, or fix the issue yourself.

Error signals on the display

Please read all of the instructions before using the air conditioner and keep this manual for future reference. The air conditioner you purchased has R410a gas  refrigerant a environmental friendly gas which does  not damage the ozone layer. In case of error, the display on the indoor unit shown the following error codes.

Error CodesDescription of the trouble
E0Indoor unit EEPROM parameter error.
E1Indoor / outdoor units communication error.
E2Zero-crossing signal detection error.
E3Indoor fan speed has been out of control.
E4Open circuit or short circuit of indoor room temperature T1 sensor.
E5Open circuit or short circuit of evaporator coil temperature T2 sensor
ECRefrigerant Leakage Detection
F1Open circuit or short circuit of outdoor ambient T4 temperature sensor
F2Open circuit or short circuit of condenser coil temperature T3 sensor
F3Open circuit or short circuit of compressor discharge T5 temperature sensor
F4Outdoor unit EEPROM parameter error
P0IPM malfunction or IGBT over-strong current protection
P1Over voltage or over low voltage protection
P2High temperature protection of compressor top diagnosis and solution
P4Inverter compressor drive error

Remote Control

Westinghouse Air Conditioner Remote Control Display
Westinghouse Air Conditioner Remote Control Display
Westinghouse Air Conditioner Error Codes; E1-E2-E6
Westinghouse Air Conditioner Error Codes; E1-E2-E6


Malfunction: The appliance does not operate

Possible causes:

  • Power failure/plug pulled out
  • Damaged indoor/outdoor unit fan motor
  • Faulty compressor thermomagnetic circuit breaker
  • Faulty protective device or fuses.
  • Loose connections or plug pulled out
  • It sometimes stops operating to protect the appliance.
  • Voltage higher or lower than the voltage range
  • Active TIMER-ON function
  • Damaged electronic control board

Malfunction: Strange odour

Possible causes: Dirty air filter

Malfunction: Noise of running water

Possible causes: Back flow of liquid in the refrigerant circulation

Malfunction: A fine mist comes from the air outlet

Possible causes: This occurs when the air in the room becomes very cold, for example in the COOLING or DEHUMIDIFYING/DRY modes.

Malfunction: A strange noise can be heard

Possible causes: This noise is made by the expansion or contraction of the front panel due to variations in temperature and does not indicate a problem.

Malfunction: Insufficient airflow

Possible causes:

  • Unsuitable temperature setting.
  • Obstructed air conditioner intakes and outlets.
  • Dirty air filter.
  • Fan speed set at minimum.
  • Other sources of heat in the room.
  • No refrigerant.

Malfunction: The appliance does not respond to commands

Possible causes:

  • Remote control is not near enough to indoor unit.
  • The batteries of remote control nearly has no power.
  • Obstacles between remote control and signal receiver in indoor unit.

Malfunction: The display is off

Possible causes:

  • Active LIGHT function
  • Power failure

Malfunction: The display is off

Possible causes:

  • Active LIGHT function
  • Power failure

Malfunction: Switch off the air conditioner immediately and cut off the power supply in the event of:

Possible causes:

  • Strange noises during operation.
  • Faulty electronic control board
  • Faulty fuses or switches.
  • Spraying water or objects inside the appliance.
  • Overheated cables or plugs.
  • Very strong smells coming from the appliance.

Display and Parts

Westinghouse Air Conditioner Indoor unit display
Westinghouse Air Conditioner Indoor unit display
Westinghouse Air Conditioner Parts
Westinghouse Air Conditioner Parts


Split Type Room Air Conditioner Manual Pdf

*If you can't find the code you're looking for on our site, please let us know, and we'll update our database as soon as possible.

41 thoughts on “Westinghouse AC Error Codes (How to Fix Them)”

  1. sir am experiencing error code b9 (the MAC address of the indoor unit is abnormal) for a remote control installed for a vrf system with 4 units of 4.5kw ceiling concealed units connect to an outdoor of 22.4kw mini vrf units other units are working normal but only one with the error code above, how do I clear this error code
    thank you

  2. I had Lloyds inverter AC
    Suddenly slow and immediately fan with full speed coming like blower air

    And display coming
    PC. 01

    What’s the error


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