York AC Error Codes (2024 Latest Fixes and Updates)

York International was once the largest independent manufacturer of air conditioning, heating, and refrigeration machinery in the world. Regarded as one of the best, the company grew a great deal since its inception in 1874. Back then the company was regarded as the heart of York, Pennsylvania – and that is where it got its name. However, in early 2005 we started to see a few changes in the setting when Johnson Controls purchased York International for $3.2 billion. Taking under one the greatest companies to date.

Regardless of the merger, York International still kept producing products under its original name – as it has had a great hold on the market. its great name and preparation got them a long way and are currently regarded as among the best Fortune 500 companies around the world.

When facing an error code we suggest you grab a pen and paper to note down the code rather than pressing various buttons on your York AC. This way you will not risk damaging your appliance any further and will be able to find out the exact issue using the common error code list for York AC error codes listed below. Once you nail down the issue you can easily call in a professional, or fix the issue yourself.

Latest Fixes

Error CodesCause
E0Indoor EEPROM (Electrically Erasable Programmable Read-Only Memory) error
E1Indoor and outdoor unit communication malfunction
E3Indoor fan speed malfunction
E4Indoor room temperature sensor error
E5Evaporator coil temperature sensor error
ECRefrigerant leak detection system malfunction
EEWater level alarm malfunction
E8Dual indoor unit (twin model only) communication malfunction
E9Other twin model malfunction
F0Overload protection
F1Outdoor temperature sensor error
F2Outdoor condenser pipe sensor error
F3Discharge air temperature sensor error
F4Outdoor EEPROM (Electrically Erasable Programmable Read-Only Memory) error
F5Outdoor fan speed (DC fan motor only) malfunction
F6T2b sensor error
F7Auto-lifting panel communication error
F8Auto-lifting panel malfunction
F9Auto-lifting panel is open
P0Inverter module IPM protection
P1High/Low voltage protection
P2Compressor top overheating protection
P3
Outdoor low temperature protection
P4Compressor drive error
P5Mode conflict
P6Compressor low-pressure protection
P7Outdoor IGBT sensor error

Central Controller Fault Codes

York Central Controller Fault Codes
York Central Controller Fault Codes
Fault CodesCauses
H3Outdoor adding malfunction (valid for host unit)
H2Outdoor decreasing malfunction (valid for host unit)
H1Net communication malfunction
EFOther malfunction
E4-T4Temp. Sensor malfunction
E3-T3Temp. Sensor malfunction
E2Sensor malfunction
E1-E0Communication malfunction Phase sequence or lack of phase
PFOther Protection
PEOil Balance
PDOil Return
PADefrost Protection
P8Compressor Current 3rd Protection
P7Compressor Current 2nd Protection
P5Condenser High Temp. Protection
P4Discharge Pipe Temp. Protection
P3Compressor Current 1st Protection
P2Discharge Low- pressure Protection
P1-P0Discharge High- pressure Protection Compressor High Temp. Protection

Remote Control

York Air Conditioner Remote Control
York Air Conditioner Remote Control

Malfunction Code of Outdoor Unit

Error CodesSolutions
E1Phase sequence error
E2Communication malfunction between indoor/outdoor units
E3T3 temperature sensor malfunction
E4T4 temperature sensor malfunction
E5T5 temperature sensor malfunction
E6Water-level alarm malfunction

Central Air Conditioning Codes

York Central Air Conditioning Error Codes
York Central Air Conditioning Error Codes
Error CodesMeaning
EFOther malfunction PF Other Protection
EEWater level checking malfunction PE Reserve
EDOutdoor protection PD Reserve
ECClear malfunction PC Reserve
EBInverter Module Protection PB Reserve
EACompressor Over-current (4 times) PA Reserve
E9Communication malfunction between PCB and Display board P9 Reserve
E8Fan motor checking out of control P8 Compressor Over-current
E7EEPROM malfunction P7 Power Lack/Over Volt Protection
E6Over-zero checking malfunction P6 Discharge Low-pressure Protection
E5T3 sensor malfunction P5 Discharge High-pressure Protection
E4T2B sensor malfunction P4 Discharge Pipe Temp. Protection
E3T2A sensor malfunction P3 Compressor Temp. Protection
E2T1 sensor malfunction P2 Condenser High Temp. Protection
E1Communication malfunction P1 Anti-cooling or Defrost Protection
E0Phase sequence or lack of phase P0 Evaporator Temp. Protection
03CCM/PC(gateway) Communication Malfunction
02CCM/Function Module Communication Malfunction
01CCM/NIM Communication Malfunction
00CCM/PCB Communication Malfunction
64Indoor-Outdoor Communication

Wall Mounted Type AC Codes

York Wall Mounted Type Ac Error Codes
York Wall Mounted Type Ac Error Codes
Fault CodesCauses
E1Room temperature sensor failure
E4Indoor EEPROM error
E7Communication fault between indoor and outdoor units
F1The protection of IPM
F2Overcurrent of the compressor
F3Communication fault between the IPM and outdoor PCB
F4Overheat protection for Discharge temperature
F6Ambient temperature sensor failure
F7Suction temperature sensor failure
F8Outdoor DC fan motor fault
F11Deviate from the normal for the compressor
F12Outdoor EEPROM error
E14Indoor fan motor malfunction
F19Power voltage is too high or low
F21Defrost temperature sensor failure
F22Overcurrent protection of AC electricity for the outdoor model
F23Over current protection for single-phase of the compressor
F25Discharge temperature sensor failure
F28Loop of the station detect error

Commercial Air Conditioning Flash Times of Led

York Product Diagnosis Procedure-Diagnostic code for outdoor unit;
York Product Diagnosis Procedure-Diagnostic code for outdoor unit;

 

YORK Diagnostic Code For Indoor Unit
YORK Diagnostic Code For Indoor Unit

 

YORK Diagnostic Code For Indoor Unit
YORK Diagnostic Code For Indoor Unit

Troubleshooting

When troubles occur, please check the following points before contacting a repair company

Problem: The unit is not working

Possible Causes:

  1. Power failure
  2. The power switch is off
  3. The fuse is burned out
  4. Remote control batteries are dead
  5. The unit’s 3-minute protection has been activated

Solution:

  1. Wait for the power to be restored
  2. Turn on the power
  3. Replace the fuse
  4. Replace the remote control batteries
  5. Wait three minutes after restarting the unit

Problem: Poor cooling performance

Possible Causes:

  1. Temperature setting may be higher than the ambient room temperature
  2. The heat exchanger on the indoor or outdoor unit is dirty
  3. The air filter is dirty
  4. The air inlet or outlet of either unit is blocked
  5. Doors and windows are open
  6. Excessive heat is generated by sunlight
  7. Low refrigerant due to leak or long-term use

Solution:

  1. Lower the temperature setting
  2. Clean the affected heat exchanger
  3. Remove the filter and clean it according to instructions
  4. Turn the unit off, remove the obstruction and turn it back on
  5. Make sure that all doors and windows are closed while operating the unit
  6. Close windows and curtains during periods of high heat or bright sunshine
  7. Check for leaks, re-seal if necessary and top off refrigerant

Problem: The unit starts and stops frequently 

Possible Causes:

  1. There’s too much or too little refrigerant in the system
  2. There is air, incompressible gas or foreign material in the refrigeration system
  3. System circuit is blocked
  4. The compressor is broken
  5. The voltage is too high or too low

Solution:

  1. Check for leaks and recharge the system with refrigerant
  2. Evacuate and recharge the system with refrigerant
  3. Determine which circuit is blocked and replace the malfunctioning piece of equipment
  4. Replace the compressor
  5. Install a manostat to regulate the voltage

Problem: Poor heating performance

Possible Causes:

  1. The outdoor temperature is lower than 7°C (44.5°F)
  2. Cold air is entering through doors and windows
  3. Low refrigerant due to leak or long-term use

Solution:

  1. Check for leaks and recharge the system with refrigerant
  2. Make sure that all doors and windows are closed during use
  3. Check for leaks, re-seal if necessary and top off refrigerant

Indoor Unit Display

York Air Conditioner Indoor Display
York AC Indoor Display
YORK AC Indoor Unit Display
YORK AC Indoor Unit Display

Manual Pdf

Danny Reese


*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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