25 Whirlpool AC error codes + troubleshooting

Facing some error codes on your Whirlpool air conditioner? Well, you should not worry a lot because error codes simply indicate specific issues in your system. This feature makes it easy for you to resolve the issues instead of wasting a lot of time just on troubleshooting.

This article includes all the error codes along with their causes and solutions that can occur on the Whirlpool aircon system. Always seek professional help whenever you think it is necessary.

Whirlpool AC error code E2

Causes:

This error is displayed on the AC unit when/if:

1. The anti-freezing protection mode has been initiated.

Solutions:

1. Clean up all the debris or dirt from the indoor unit air filters. Get rid of any material stuck in them.
2. Check for any short circuits in the air filters and their parts. Repair the components or replace them as needed.
3. Check for any malfunction in the indoor unit’s heat exchanger thermistor. Repair or replace the thermistor as needed.
4. Check the main PCB for any issues. Replace the PCB if it’s faulty.

Whirlpool AC error code E4

Causes:

This error is displayed on the AC unit when/if:

1. The discharge protection mode is activated in the compressor.

Solutions:

1. Turn OFF the air conditioner for a few seconds then turn it ON again.

If it doesn’t resolve the error, call the HVAC engineer or technician to do the following:

• Check the pressure level of the compressor with the help of a meter. If the pressure is not in the normal range, bring it back to the required level.
• Check and clean the stop valve from dust or debris building up in it. Repair or replace the valve as needed.
• Check all the wiring and connections. Repair or replace them if it’s broken or has loose connectors.

Whirlpool AC error code E5

Causes:

This error is displayed on the AC unit when/if:

1. The overcurrent protection mode has been initiated in the air conditioner.
2. Too high a line voltage is being supplied to the system.
3. There is no constant supply of voltage to the unit.

Solutions:

1. Check the voltage with a meter or seek professional help. Make sure enough and constant voltage is being supplied to the unit.
2. Check the electrical lines and connections for any damage or breakage. Repair or replace the defective areas.
3. Check the main PCB of either unit and replace them if they are malfunctioning.

Whirlpool AC error code E6

Causes:

This error is displayed on the AC unit when/if:

1. The communication between the indoor unit and outdoor unit is not working well or is unstable.
2. The wiring and connections between the indoor unit and the outdoor unit are defective.

Solutions:

1. Check the particular communication wire for any breakage, burnt, or loose connections. Make sure that all the wires are perfectly connected and fine.
2. Inspect the main PCB of the indoor and outdoor units for malfunctioning. Replace them if defective.

Whirlpool AC error code EE

Causes:

This error is displayed on the AC unit when/if:

1. The storage slug of the unit is broken, clogged, or malfunctioning.
2. The main PCB of the indoor unit is defective.

Solutions:

1. Check the storage slug and ensure it is in good shape. Seek professional help if needed.
2. Check the wire harness and connection of the indoor main PCB. Repair damaged wires and broken connectors as needed.
3. Inspect the main PCB of the indoor unit and replace it if it is malfunctioning.

Whirlpool AC error code F0

Causes:

This error is displayed on the AC unit when/if:

1. The refrigerant level of the air conditioner is low.
2. The fan of the unit is not operating well.

Solutions:

1. Check the condenser, cooling coils, and blowers. Get rid of any debris or dust clogged up in them.
2. Check the refrigerant level of the air conditioner. Contact the technician to refill it if the refrigerant level is below the normal range.
3. Check the air conditioner fan for any issues and faults. Repair or replace the fan if it is faulty or not running at high speed.

Whirlpool AC error code F1

Causes:

This error is displayed on the AC unit when/if:

1. There are some issues with the ambient temperature sensor of the air conditioner.
2. The ambient temperature sensor is subjected to an open or short circuit.

Solutions:

1. Check the resistance of the sensor with the help of the meter. Repair or replace it if it is weak or not efficient for the air conditioner.
2. Check the sensor and make sure that it is perfectly placed in its particular position.
3. Check for any issues or broken wires between the sensor and the main PCB. Repair or replace the damaged wires as required.
4. If the sensor is malfunctioning. Replace it with the new one.
5. If the error persists, check for any issues in the main PCB. Replace it if it is defective.

Whirlpool AC error code F2

Causes:

This error is displayed on the AC unit when/if:

1. The indoor unit pipe temperature sensor is not functioning properly.
2. There is an open or short circuit in the Indoor pipe temperature sensor.

Solutions:

1. Try the same solutions as suggested for the Whirlpool air conditioner “Error Code F1”.

Whirlpool AC error code F3

Causes:

This error is displayed on the AC unit when/if:

1. There are some malfunctioning in the ambient temperature sensor of the outdoor unit.
2. The outdoor ambient temperature sensor is subjected to the open or short circuit.

Solutions:

1. Try the same solutions as suggested for the Whirlpool air conditioner “Error Code F1”.

Whirlpool AC error code F4

Causes:

This error is displayed on the AC unit when/if:

1. The condenser temperature sensor of the outdoor unit is not functioning properly.
2. There is a broken circuit or short circuit in the outdoor condenser temperature sensor of the air conditioner.

Solutions:

1. Try the same solutions as suggested for the Whirlpool air conditioner “Error Code F1”.

Whirlpool AC error code F5

Causes:

This error is displayed on the AC unit when/if:

1. There are some issues with the discharge temperature sensor of the outdoor unit.
2. The outdoor discharge temperature sensor is subjected to a broken or short circuit.

Solutions:

1. Try the same solutions as suggested for the Whirlpool air conditioner “Error Code F1”.

Whirlpool AC error code H3

Causes:

This error is displayed on the AC unit when/if:

1. The overload protection mode has been started in the air conditioner.
2. The compressor of the air conditioner is under too much load.

Solutions:

1. Re-energize the air conditioner multiple times.
2. Turn OFF the air conditioner for some time and then turn it ON again.
3. Clean the condenser coils and other compensation where dirt is covering the parts.
4. Ensure a consistent supply of voltages.
5. Inspect the compressor for any malfunctioning. Repair or replace the component, as preferable.

Whirlpool AC error code H4

Causes:

This error is displayed on the AC unit when/if:

1. The system is overloading mostly because of increasing temperature.
2. The compressor is malfunctioning.
3. Wrong supply of voltages. 

Solutions:

1. Do a thorough cleaning of the AC system. Remove dirt and dust covering from condenser coils, evaporator, blower, and related components.
2. Measure voltages and ensure they are at a consistent and required level.
3. Check the wire harness of the system and repair it if there was a short circuit, burn, or damaged wire.
4. Turn OFF the system and give it a rest if it was operating in extreme outdoor temperatures for a long time. 

Whirlpool AC error code H6

Causes:

This error is displayed on the AC unit when/if:

1. The system or main PCB is not receiving any feedback from the indoor motor for a long time.
2. The wire harness is defective.
3. The indoor unit’s main PCB is malfunctioning.

Solutions:

1. Restart the AC unit after turning it OFF for a few minutes.
2. Look through the wire harness and do repairs if there is a broken wire or lose communication connectors.
3. Check the indoor unit main PCB for any malfunctioning. Replace the PCB if it’s faulty.
4. Check the indoor unit motor for defects. Repair or replace the motor as needed.

Whirlpool AC error code H7

Causes:

This error is displayed on the AC unit when/if:

1. The indoor and outdoor units of the system are not synchronizing.
2. The model, version, or type of indoor and outdoor units is different.

Solutions:

1. Check the label on both indoor and outdoor units to see if they are of the same model and version. If the units mismatch, contact the company’s sales department for replacement or delivery of compatible units.
2. Contact the company customer support for a technician to inspect the sync problem and integrate both units.

Whirlpool AC error code Lc

Causes:

This error is displayed on the AC unit when/if:

1. The compressor of the air conditioner is subjected to some extreme malfunctioning.
2. There is a startup failure in the compressor of the air conditioner.

Solutions:

1. Turn OFF the system. Restart it again as it can be a one-time issue and the error may go away.
2. Check the mainboard for any issues. Repair or replace the PCB if it is defective.
3. Check the compressor as it is the one that is faulty. Repair or replace it according to the guidance of the engineer or technician.

Whirlpool AC error code P7

Causes:

This error is displayed on the AC unit when/if:

1. The temperature sensor of the carbon fin is malfunctioning.
2. The carbon fin temperature sensor has an open or short circuit.

Solutions:

1. Try the same solutions as suggested for the Whirlpool air conditioner “Error Code F1”.

Whirlpool AC error code P8

Causes:

This error is displayed on the AC unit when/if:

1. The carbon fin of the system is overheating and the temperature is exceeding the normal limit.

Solutions:

1. Turn OFF the system to give it rest until it cools down completely.
2. Check the system for any burning wires or short circuits. Do repairs as needed.
3. Check the carbon fin for any malfunction. Replace the sensor or repair the component as needed.
4. Check the thermostat settings and reset them. Repair or replace the thermostat if it is malfunctioning.
5. Check the main PCBs for any defects. Replace the PCB if it is at fault.

Whirlpool AC error code PL

Causes:

This error is displayed on the AC unit when/if:

1. The DC bus under voltage protection mode is activated.
2. The DC input voltages to the system are low.

Solutions:

1. Check the voltage with the help of the voltmeter. If the power is unstable the company switches OFF the power supply and informs the power company about the abnormal voltages. Do not turn the air conditioner ON until the voltage returns to normal.
2. If the error remains even when the voltage is under normal range, check the mainboard and replace it if it is defective.
3. Check the compressor with the help of the technician. Repair or replace it if faulty.

Whirlpool AC error code PH

Causes:

This error is displayed on the AC unit when/if:

1. The over-input voltage protection mode has been initiated in the air conditioner.
2. The DC input voltage is too high than its maximum required limit.

Solutions:

1. Try the same solutions as suggested for the Whirlpool air conditioner “Error Code FL”.

Whirlpool AC error code U1, U5

Causes:

This error is displayed on the AC unit when/if:

1. The phase current detection (U1 is for the compressor, U5 is for the complete system) is malfunctioning.
2. The compressor phases are malfunctioning.

Solutions:

1. Check the voltages to the compressor and ensure they are stable and consistent.
2. Ensure that compressor phases are in the correct sequence.
3. Check the wire harness for any issues. Do repairs of wires as needed.
4. Check the phase current detection device and replace it if it is defective.

Whirlpool AC error code U7

Causes:

This error is displayed on the AC unit when/if:

1. There is a direction-changing issue in the 4-way valve of the unit.
2. The unit detects that the difference between the evaporator temperature and the ambient temperature of the indoor unit is less than that of the protective value.

Solutions:

1. The system will automatically remove this error if it occurs 1 or 2 times and all the functions will operate normally just like they were before.

If this error occurs more than 2 times, the system will not be able to bring the operations back to normal. In this case, you have to take down the error by yourself.

• Turn OFF the air conditioner for some time and turn it ON again.
• Energize the air conditioner by turning it ON and OFF again and again multiple times, until the error goes away.

It is better to seek professional help if this error is on the screen.

Whirlpool AC error code UA

Causes:

This error is displayed on the AC unit when/if:

1. The setting of the indoor or outdoor unit is wrong.
2. Indoor or outdoor units of the system are not functioning properly.

Solutions:

1. Using the remote controller, set all the settings of the units. Reset the settings to default if nothing seems to work.
2. Inspect the main PCB of both units. Replace either of the PCB if it is malfunctioning.
3. Seek professional help to inspect both units for any malfunctioning. Do the repairing as needed.

Whirlpool AC error code UH

Causes:

This error is displayed on the AC unit when/if:

1. The system or main PCB is not receiving any feedback from the outdoor motor for a long time.
2. The wire harness is defective.
3. The outdoor unit’s main PCB is malfunctioning.

Solutions:

1. Try the same solutions as suggested for the Whirlpool air conditioner “Error Code H6”.

Whirlpool AC error code UU

Causes:

This error is displayed on the AC unit when/if:

1. The system has entered the over-current protection mode.
2. There is an increase in the DC input voltage.

Solutions:

1. Try the same solutions as suggested for the Whirlpool air conditioner “Error Code PL”.

Whirlpool AC Miscellaneous Problems, Issues, or Errors

Whirlpool AC is not starting

Causes:

1. The air conditioner is not plugged in.
2. The circuit breaker or the fuse of the air conditioner is blown or tripped.
3. The power is not being supplied properly.
4. The reset button of the power cord has been tripped.

Solutions:

1. Check the power cord and ensure that it is plugged into the grounded 3-prong outlet.
2. Check the fuse or circuit breaker of the house for any issues. Replace or reset it as required.
3. When the power is restored, the unit will automatically restart. However, to protect against the tripping of compressor overload, there will be a delay of approximately 3 minutes.
4. Reset the unit.

Whirlpool AC is not cooling enough or efficiently

Causes:

1. There is a restriction of airflow or the air filter is clogged up with dirt.
2. The temperature of the room is too high.
3. The cooling coils have been frozen.
4. The temperature control is not set properly.

Solutions:

1. Remove anything like curtains, furniture, or blinds that may be blocking the front of the air conditioner.
2. Set the thermostat temperature to a lower level.
3. Check and clean the air filter. Make sure there are no blockages or clogging.
4. Make sure no warm air is entering the room by keeping all the doors and windows closed properly.

Whirlpool AC has icing or is freezing up

Causes:

1. The airflow is blocked by the ice.

Solutions:

1. Turn OFF the air conditioner. Wait until the ice is melted.
2. Turn it ON again and run at high speed to see if the problem goes away.
3. If you are still getting the problem, seek help through customer service for further guidance.

The remote controller of the Whirlpool AC is not working

Causes:

1. Batteries are not inserted correctly.
2. The batteries of the remote control are dead.

Solutions:

1. Check and make sure that the batteries are placed correctly.
2. If the batteries are dead, replace them with new ones.

Water is dripping from the Whirlpool AC Outdoor unit

Causes:

1. The weather is warm and humid.

Solutions:

1. This condition is normal when there is high humidity in the weather.

Water is leaking from Whirlpool AC indoor unit

Causes:

1. There is a problem with the leveling of the air conditioner.

Solutions:

1. The slope of the air conditioner should be toward the outdoor unit.
2. Level the air conditioner properly so that it can have a slight downward slope toward the outside, this will ensure proper drainage.