York Error Code P1
High/low voltage protection
Error Code Summary
| Brand | York |
| Error Code | P1 |
| Meaning | High/low voltage protection |
| Cause | Supply voltage abnormal |
| Recommended Action | Check voltage at outdoor unit |
How to Fix York Error P1
- 1
Power Cycle the Unit
Turn off the unit at the breaker, wait 5 minutes, then restore power. Some errors auto-clear after a restart.
- 2
Identify the Issue
Error P1 means: High/low voltage protection. The most common cause is: Supply voltage abnormal.
- 3
Take Corrective Action
Check voltage at outdoor unit
- 4
Test the System
After completing repairs, run the system and monitor for the error code. If it recurs, the issue may require professional diagnosis.
Safety Notice
Always disconnect power before performing any electrical work. If you're not a certified HVAC technician, contact a qualified professional for repairs involving refrigerant, electrical components, or compressor work.
Frequently Asked Questions
What does York error code P1 mean?
York error code P1 indicates: High/low voltage protection. This is typically caused by: Supply voltage abnormal.
How do I fix York error code P1?
To fix York error code P1: Check voltage at outdoor unit. If the error persists after these steps, contact a qualified HVAC technician.
Is York error code P1 serious?
Error code P1 (High/low voltage protection) should be addressed promptly to prevent further damage to your York system. Always turn off the unit if you notice unusual sounds, smells, or continued malfunction.