Sharp AC Error Codes – How to Fix Them

Hayakawa Metal Works, now commonly known as Sharp Corporation, was founded back in 1912. This Japanese multinational corporation design manufactures and sells electronics worldwide. With headquarters in Sakai-Ku, the Japanese multinational company is majorly owned by the Foxconn Group. Sharp is one of the few companies that were late to develop its basic range of appliances but nonetheless were able to cover the gap in a few years.

That was because at that point in time Sharp Corporation brought a different solution to the table, offering appliances that were cost-effective and energy-saving. Offering customers a great deal more than they were getting from standard appliances.

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 Sharp air conditioner error codes listed below. Once you know the exact issue you can easily call in a professional, or fix the issue yourself.

Codes List

Error CodesProblem
EEButtons are locked
E0Water pump malffunction
E1High pressure protection of compressor
E2Indoor anti-frozen of compressor
E3Low pressure protection of compressor
E4Air discharge high-temperature protection of compressor
E5Overload protection of compressor
E6Transmit malfunction
E8Indoor fan protection
E9Water flow protection
FFConnected control communications Failure
F0Malfunction of indoor environment sensor at air return vent
F1Evaporator sensor malfunction
F2Condenser sensor malfunction
F3Outdoor environment sensor malfunction
F4Malfunction of air discharge sensor
F5Malfunction of environment sensor on displayer
eeMalfunction of outdoor drive memory chip. Outdoor drive board.
Compressor over load protection. Compressor overload switch.
H4Overload protection. Evaporator temperature, condenser temperature.
Malfunction of outdoor fan motor. Outdoor fan motor.
U7Direction changing malfunction of 4-way valve.
P6Communicatio n malfunction between main control and drive.
EEMalfunction of outdoor main control memory chip. Outdoor main control board.

ES: If this display reads ”ES” or ”AS”, a sensor has failed. Contact your Authorized Sharp Service Center.

Sharp Air Conditioner Remote Control
”ES” or ”AS”, a sensor has failed

Outdoor Unit Codes

Error CodesMeaning
PHDC busbar over-voltage protection
P8IPM or PFC over-temperature protection
PcCurrent sense circuit error
P7IPM or PFC temperature sensor error
P5Compressor current protection
PLDC busbar under-voltage protection
LcCompressor startup failure
P0Drive module reset
H7Compressor motor desynchronizing
LdPhase loss
P6Drive-to-main-control communication error
H5IPM protection
H3Compressor overload protection
PAAC current protection (input side)
PUCharging circuit error
HCPFC protection
H6DC fan error
PPInput AC voltage abnormality
EEDriving board memory chip error


Air conditioner does not run if attem pt to immediately restart after a stop.To protect the air conditioner upon immediate restart after a stop, the microcomputer controller will delay the unit for 3 minutes before the air conditioner will run.
Air conditioner blows out bad smell when it is initially started.The air conditioner itself has no bad smell. If a bad smell has been accumulated from the environment, clean the airfilter.
You may hear ''Water Flowing'' noiseWhen the air conditioner is started, or the compressor is started or stopped during running or the air conditioner is stopped, sometimes you may hear fluid gurgling noises. This is not a fault - it is the sound offlowing refrigerant.
Sometimes a thin mist will flow out of the outlet when air conditioner is running under cooling mode.This might occur when indoor temperature and humidity are high. This is because the indoor air is quickly cooled down. After a period of time, the mist will disappear with the decrease of indoor temperature and humidity.
You may hear a slight cracking sound when the air conditioner is started or stopped.This is the sound of friction caused by expansion and/or contraction of panel or other parts due to the change of temperature.
The unit will not runHas the power been shut down? Has the circuit breaker device tripped off? Is the Timer correctly used? Have the wiring or connections been a damaged?P
Cooling (Heating) efficiency is not good.Is Temp. setting suitable? Are inlet and outlet vents obstructed? Are the windows and doors closed? Is the fa n speed_set at low speed? Is there too much dust accumulated and obstructing the filter?
Wireless remote control is not workingCheck that there is no magnetic or electrical interference near the main unit that may be affecting the operation of the controller.
Water is dripping or leaking from the indoor unitThe air humidity is on the high side. Condensing water has overflowed. The connection of indoor unit drainage pipe has been loosened.
Noise from indoor unitFan or compressor relay is switching on or off. When defrosting is started or stopped, there is a sound of refrigerant flowing in the reverse direction.
Moisture on air outlet ventIf unit is running under high humidity for a long time, moisture will be condensed on the air outlet grill and may drip off.

Cleaning The Filters

Sharp Air Conditioner Cleaning Filter
Sharp Air Conditioner Cleaning Filter

Be sure to disconnect the power cord from the wall outlet or turn off the circuit breaker before performing any maintenance.

  1. Turn off the unit.
  2. Remove the ilters. Lift the open panel. Pull the air ilters down to remove them.
  3. Clean the ilters. Use a vacuum cleaner to remove dust. If the ilters are dirty, wash them with warm water and a mild detergent. Dry ilters in the shade before reinstalling.
  4. Reinstall the ilters and close the open panel.

Remote Control

Sharp Air Conditioner Remote Control
Sharp Air Conditioner Remote Control

Wiring Diagram

Sharp Air Conditioner Wiring Diagram for AY-AP18DR
Sharp Air Conditioner Wiring Diagram for AY-AP18DR
Sharp Air Conditioner Wiring Diagram for AE-A18DR
Sharp Air Conditioner Wiring Diagram for AE-A18DR
Sharp Window AC Control Panel and Parts
Sharp Window AC Control Panel and Parts

Manuals Pdf

Sharp AC Manual PDF

Service Manual PDF

Window AC Installation And Operation Manual AF-S50EX

*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.

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