Rheem Error Code P4
Compressor drive error
Error Code Summary
| Brand | Rheem |
| Error Code | P4 |
| Meaning | Compressor drive error |
| Cause | Inverter compressor drive circuit malfunction |
| Recommended Action | Check inverter board, compressor winding insulation, and wiring |
How to Fix Rheem Error P4
- 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 P4 means: Compressor drive error. The most common cause is: Inverter compressor drive circuit malfunction.
- 3
Take Corrective Action
Check inverter board, compressor winding insulation, and wiring
- 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 Rheem error code P4 mean?
Rheem error code P4 indicates: Compressor drive error. This is typically caused by: Inverter compressor drive circuit malfunction.
How do I fix Rheem error code P4?
To fix Rheem error code P4: Check inverter board, compressor winding insulation, and wiring. If the error persists after these steps, contact a qualified HVAC technician.
Is Rheem error code P4 serious?
Error code P4 (Compressor drive error) should be addressed promptly to prevent further damage to your Rheem system. Always turn off the unit if you notice unusual sounds, smells, or continued malfunction.