Rheem Error Code E2
Room temperature sensor failure
Error Code Summary
| Brand | Rheem |
| Error Code | E2 |
| Meaning | Room temperature sensor failure |
| Cause | Indoor room thermistor open or short circuit |
| Recommended Action | Check sensor wiring and resistance, replace thermistor if faulty |
How to Fix Rheem Error E2
- 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 E2 means: Room temperature sensor failure. The most common cause is: Indoor room thermistor open or short circuit.
- 3
Take Corrective Action
Check sensor wiring and resistance, replace thermistor if faulty
- 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 E2 mean?
Rheem error code E2 indicates: Room temperature sensor failure. This is typically caused by: Indoor room thermistor open or short circuit.
How do I fix Rheem error code E2?
To fix Rheem error code E2: Check sensor wiring and resistance, replace thermistor if faulty. If the error persists after these steps, contact a qualified HVAC technician.
Is Rheem error code E2 serious?
Error code E2 (Room temperature sensor failure) 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.