York Air Conditioner Error Codes




Error Code: E0

Cause: Indoor EEPROM (Electrically Erasable Programmable Read-Only Memory) error

Error Code: E1

Cause: Indoor and outdoor unit communication malfunction




Error Code: E3

Cause: Indoor fan speed malfunction

Error Code: E4  

Cause: Indoor room temperature sensor error

Error Code: E5 

Cause: Evaporator coil temperature sensor error




Error Code: EC 

Cause: Refrigerant leak detection system malfunction

Error Code: EE

Cause: Water level alarm malfunction

Error Code: E8

Cause: Dual indoor unit (twin model only) communication malfunction

Error Code: E9 

Cause: Other twin model malfunction

Error Code: F0 

Cause: Overload protection



Error Code: F1 

Cause: Outdoor temperature sensor error

Error Code: F2

Cause: Outdoor condenser pipe sensor error

Error Code: F3 

Cause: Discharge air temperature sensor error

Error Code: F4

Cause: Outdoor EEPROM (Electrically Erasable Programmable Read-Only Memory) error

Error Code: F5 

Cause: Outdoor fan speed (DC fan motor only) malfunction

Error Code: F6

Cause: T2b sensor error

Error Code: F7  

Cause: Auto-lifting panel communication error

Error Code: F8 

Cause: Auto-lifting panel malfunction

Error Code: F9  

Cause: Auto-lifting panel is open

Error Code: P0  

Cause: Inverter module IPM protection

Error Code: P1 

Cause: High/Low voltage protection

Error Code: P2  

Cause: Compressor top overheating protection

Error Code: P3 



Cause: Outdoor low temperature protection

Error Code: P4 

Cause: Compressor drive error

Error Code: P5 

Cause: Mode conflict

Error Code: P6 

Cause: Compressor low-pressure protection

Error Code: P7

Cause: Outdoor IGBT sensor error

 

York Air Conditioner Error Codes
York Air Conditioner Error Codes

 

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

E4T4: Temp. Sensor malfunction

E3T3: 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

 

York Air Conditioner Remote Control
York Air Conditioner Remote Control

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 Code

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

York Wall Mounted Type Ac Error Codes
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 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

YORK AC 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
YORK AC Indoor Unit Display
YORK AC Indoor Unit Display

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

 










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