York AC Error Codes List and Fixes

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

Central Controller Fault Codes

Remote Control

Malfunction Code of Outdoor Unit

Central Air Conditioning Codes

Error Codes	Meaning
EF	Other malfunction PF Other Protection
EE	Water level checking malfunction PE Reserve
ED	Outdoor protection PD Reserve
EC	Clear malfunction PC Reserve
EB	Inverter Module Protection PB Reserve
EA	Compressor Over-current (4 times) PA Reserve
E9	Communication malfunction between PCB and Display board P9 Reserve
E8	Fan motor checking out of control P8 Compressor Over-current
E7	EEPROM malfunction P7 Power Lack/Over Volt Protection
E6	Over-zero checking malfunction P6 Discharge Low-pressure Protection
E5	T3 sensor malfunction P5 Discharge High-pressure Protection
E4	T2B sensor malfunction P4 Discharge Pipe Temp. Protection
E3	T2A sensor malfunction P3 Compressor Temp. Protection
E2	T1 sensor malfunction P2 Condenser High Temp. Protection
E1	Communication malfunction P1 Anti-cooling or Defrost Protection
E0	Phase sequence or lack of phase P0 Evaporator Temp. Protection
03	CCM/PC(gateway) Communication Malfunction
02	CCM/Function Module Communication Malfunction
01	CCM/NIM Communication Malfunction
00	CCM/PCB Communication Malfunction
64	Indoor-Outdoor Communication

Wall Mounted Type AC Codes

Commercial Air Conditioning Flash Times of Led

 

 

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

Manual Pdf

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Danny Reese

HVAC Expert at acerrorcode.com

Regarding error and fault codes, we believe sharing knowledge is the best way to help everyone. That is why we established ACErrorCode.com, to give you every bit of info you need as a customer. HVAC Expert Contact: dannyreese@acerrorcode.com Call: 916-954-2677

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