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How to Troubleshoot York Furnace Error Codes

Wondering how to fix York furnace error codes? If you own a York furnace, you may encounter some error codes flashing on the control board. These codes indicate the status…

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Wondering how to fix York furnace error codes?

If you own a York furnace, you may encounter some error codes flashing on the control board. These codes indicate the status of your furnace and help you identify the source of the problem. 

In this blog post, we will explain what some of the most common York furnace error codes mean and how to fix them.

What are York Furnace Error Codes?

York furnace error codes are alphanumeric codes that show on the LED display of the control board. The control board is usually located inside the furnace cabinet or on the blower compartment door. 

The codes can be green, amber, or red, and they flash in a series of intervals to signal normal operation or system issues.

For example, a two-flash code will flash on and off twice, stay off for two seconds, then repeat. A rapid flash is only used during factory testing and indicates an error.

READ: How to Troubleshoot Goodman Furnace Codes

How to Read York Furnace Error Codes?

To read York furnace error codes, you need to check the color and the number of flashes of the LED display. Each color and number combination has a different meaning and indicates a different issue. Here is a summary of what each color and number means:

  • Green flashes: Normal operation
    • One green flash: No call for heat
    • Two green flashes: No error codes stored in memory
    • Three green flashes: No error codes stored in memory
    • Rapid green flash: Factory testing mode
  • Amber flashes: Normal operation with call for heat or cooling
    • One amber flash: Call for cooling
    • Two amber flashes: Call for heat
    • Three amber flashes: Temperature fulfilled, burner ending cycle
    • Four amber flashes: Restriction in circulating air system
    • Five amber flashes: Restriction in vent or combustion air system
    • Rapid amber flash: Possible low flame
  • Red flashes: Error or fault
    • One red flash: Flame present with no gas valve power
    • Two red flash: Pressure switch stuck closed
    • Three red flash: Pressure switch stuck open
    • Four red flash: 24-volt fuse or high-limit switch open

READ: How to Troubleshoot American Standard Furnace Codes

How to Fix York Furnace Error Codes?

Depending on the type and severity of the error code, you may be able to fix it yourself or need to contact a professional technician. Here are some possible solutions for each of the York furnace error codes :

One red flash: Flame present with no gas valve power

This code indicates that there is a gas leak or a slow gas valve closure. This can be dangerous and should be fixed as soon as possible.

  • Check the gas valve for any signs of leakage or damage. If you find any, replace the gas valve immediately.
  • Check the gas pressure and make sure it is within the recommended range. If it is too low or too high, adjust it accordingly.
  • Test the ignition control module and make sure it is sending power to the gas valve when needed. If it is faulty, replace it with a new one.

Two red flash: Pressure switch stuck closed

This code indicates that the pressure switch is not opening when it should. This can prevent the furnace from starting or running properly.

  • Check the wiring of the pressure switch and make sure it is connected correctly. If there are any loose or broken wires, fix them or replace them.
  • Replace the pressure switch with a new one and make sure it is compatible with your furnace model.
  • Test the inducer motor and make sure it is working properly. If it is not spinning or making noise, replace it with a new one.

Three red flash: Pressure switch stuck open

This code indicates that the pressure switch is not closing when it should. This can prevent the furnace from igniting or staying lit.

  • Clear any obstructions in the vent pipe or the air intake pipe that may be blocking the airflow. You can use a vacuum cleaner or a brush to remove any debris or dust.
  • Replace the pressure switch hose if it is cracked, kinked, or clogged. Make sure it is securely attached to the pressure switch and the inducer motor.
  • Test the combustion air blower and make sure it is working properly. If it is not blowing air or making noise, replace it with a new one.

Four red flash: 24-volt fuse or high-limit switch open

This code indicates that there is an electrical problem or an overheating issue. This can damage your furnace components or cause a fire hazard.

  • Check and correct the size of your ducting system and make sure it matches your furnace capacity. If your ducts are too small or too large, they can affect the airflow and cause overheating or underheating.
  • Replace your air filter if it is dirty or clogged. A dirty air filter can reduce the airflow and cause overheating or underheating.
  • Test your blower motor and make sure it is working properly. If it is not spinning or making noise, replace it with a new one.
  • Replace the fuse on the control board if it is blown or open. Make sure you use the correct fuse size and type for your furnace model.
  • Clear any obstructions in the circulating airflow that may be restricting the heat transfer. You can use a vacuum cleaner or a brush to remove any debris or dust.

Conclusion

York furnace error codes are useful tools to troubleshoot your furnace and keep it running smoothly. However, if you are not comfortable or confident in performing any of the repairs yourself, you should always contact a professional technician for assistance. Remember to follow all safety precautions and turn off the power supply before working on your furnace.

We hope this blog post has helped you understand how to troubleshoot York furnace error codes. If you would like more York furnace DIYs and tips subscribe to our newsletter. Thank you for reading!

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Hi there, I'm Robert Brooks

Hi there, I'm Robert Brooks

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