York Air Conditioner Error Codes This page provides a simple explanation concerning content relating to error codes and their possible causes. Please note that the content may slightly differ depending on models. Error Codes. By checking the error code, you are able to identify the status and the issue of the air conditioner/air conditioning system.
York Air Conditioner Error Code Solutions
| Error Codes | Cause |
|---|---|
| E0 | Indoor EEPROM (Electrically Erasable Programmable Read-Only Memory) error |
| E1 | Indoor and outdoor unit communication malfunction |
| E3 | Indoor fan speed malfunction |
| E4 | Indoor room temperature sensor error |
| E5 | Evaporator coil temperature sensor error |
| EC | Refrigerant leak detection system malfunction |
| EE | Water level alarm malfunction |
| E8 | Dual indoor unit (twin model only) communication malfunction |
| E9 | Other twin model malfunction |
| F0 | Overload protection |
| F1 | Outdoor temperature sensor error |
| F2 | Outdoor condenser pipe sensor error |
| F3 | Discharge air temperature sensor error |
| F4 | Outdoor EEPROM (Electrically Erasable Programmable Read-Only Memory) error |
| F5 | Outdoor fan speed (DC fan motor only) malfunction |
| F6 | T2b sensor error |
| F7 | Auto-lifting panel communication error |
| F8 | Auto-lifting panel malfunction |
| F9 | Auto-lifting panel is open |
| P0 | Inverter module IPM protection |
| P1 | High/Low voltage protection |
| P2 | Compressor top overheating protection |
| P3 | Outdoor low temperature protection |
| P4 | Compressor drive error |
| P5 | Mode conflict |
| P6 | Compressor low-pressure protection |
| P7 | Outdoor IGBT sensor error |
York Central Controller Fault Codes:
H3: Outdoor adding malfunction (valid for host unit)
H2: Outdoor decreasing malfunction (valid for host unit)
H1: Net communication malfunction
EF: Other malfunction
E4-T4: Temp. Sensor malfunction
E3-T3: Temp. Sensor malfunction
E2: Sensor malfunction
E1-E0: Communication malfunction Phase sequence or lack of phase
PF: Other Protection
PE: Oil Balance
PD: Oil Return
PA: Defrost Protection
P8: Compressor Current 3rd Protection
P7: Compressor Current 2nd Protection
P5: Condenser High Temp. Protection
P4: Discharge Pipe Temp. Protection
P3: Compressor Current 1st Protection
P2: Discharge Low- pressure Protection
P1-P0: Discharge High- pressure Protection Compressor High Temp. Protection
Malfunction Code of Outdoor unit:
E1: Phase sequence error
E2: Communication malfunction between indoor/outdoor units
E3: T3 temperature sensor malfunction
E4: T4 temperature sensor malfunction
E5: T5 temperature sensor malfunction
E6: Water-level alarm malfunction
York Central Air Conditioning Error Codes:
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
York Wall Mounted Type Ac Error Codes:
E7: Communication fault between indoor and outdoor units
E1: Room temperature sensor failure
E4: Indoor EEPROM error
E14: Indoor fan motor malfunction
F12: Outdoor EEPROM error
F1: The protection of IPM
F22: Overcurrent protection of AC electricity for the outdoor model
F3: Communication fault between the IPM and outdoor PCB
F19: Power voltage is too high or low
F4: Overheat protection for Discharge temperature
F8: Outdoor DC fan motor fault
F21: Defrost temperature sensor failure
F7: Suction temperature sensor failure
F6: Ambient temperature sensor failure
F25: Discharge temperature sensor failure
F11: deviate from the normal for the compressor
F28: Loop of the station detect error
F2: Overcurrent of the compressor
F23: Overcurrent protection for single-phase of the compressor
Commercial Air Conditioning:
YORK AC Troubleshooting
When troubles occur, please check the following points before contacting a repair company
Problem: The unit is not working
Possible Causes:
- Power failure
- The power switch is off
- The fuse is burned out
- Remote control batteries are dead
- The unit’s 3-minute protection has been activated
Solution:
- Wait for the power to be restored
- Turn on the power
- Replace the fuse
- Replace the remote control batteries
- Wait three minutes after restarting the unit
Problem: Poor cooling performance
Possible Causes:
- Temperature setting may be higher than the ambient room temperature
- The heat exchanger on the indoor or outdoor unit is dirty
- The air filter is dirty
- The air inlet or outlet of either unit is blocked
- Doors and windows are open
- Excessive heat is generated by sunlight
- Low refrigerant due to leak or long-term use
Solution:
- Lower the temperature setting
- Clean the affected heat exchanger
- Remove the filter and clean it according to instructions
- Turn the unit off, remove the obstruction and turn it back on
- Make sure that all doors and windows are closed while operating the unit
- Close windows and curtains during periods of high heat or bright sunshine
- Check for leaks, re-seal if necessary and top off refrigerant
Problem: The unit starts and stops frequently
Possible Causes:
- There’s too much or too little refrigerant in the system
- There is air, incompressible gas or foreign material in the refrigeration system
- System circuit is blocked
- The compressor is broken
- The voltage is too high or too low
Solution:
- Check for leaks and recharge the system with refrigerant
- Evacuate and recharge the system with refrigerant
- Determine which circuit is blocked and replace the malfunctioning piece of equipment
- Replace the compressor
- Install a manostat to regulate the voltage
Problem: Poor heating performance
Possible Causes:
- The outdoor temperature is lower than 7°C (44.5°F)
- Cold air is entering through doors and windows
- Low refrigerant due to leak or long-term use
Solution:
- Check for leaks and recharge the system with refrigerant
- Make sure that all doors and windows are closed during use
- Check for leaks, re-seal if necessary and top off refrigerant