Bosch Error Code E5
Evaporator coil temperature sensor T2 fault
Error Code Summary
| Brand | Bosch |
| Error Code | E5 |
| Meaning | Evaporator coil temperature sensor T2 fault |
| Cause | Indoor coil thermistor open or short circuit |
| Recommended Action | Inspect sensor on evaporator coil, replace if resistance out of spec |
How to Fix Bosch Error E5
- 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 E5 means: Evaporator coil temperature sensor T2 fault. The most common cause is: Indoor coil thermistor open or short circuit.
- 3
Take Corrective Action
Inspect sensor on evaporator coil, replace if resistance out of spec
- 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 Bosch error code E5 mean?
Bosch error code E5 indicates: Evaporator coil temperature sensor T2 fault. This is typically caused by: Indoor coil thermistor open or short circuit.
How do I fix Bosch error code E5?
To fix Bosch error code E5: Inspect sensor on evaporator coil, replace if resistance out of spec. If the error persists after these steps, contact a qualified HVAC technician.
Is Bosch error code E5 serious?
Error code E5 (Evaporator coil temperature sensor T2 fault) should be addressed promptly to prevent further damage to your Bosch system. Always turn off the unit if you notice unusual sounds, smells, or continued malfunction.