Fujitsu General Error Code E:12
Indoor coil temperature sensor error
Error Code Summary
| Brand | Fujitsu General |
| Error Code | E:12 |
| Meaning | Indoor coil temperature sensor error |
| Cause | Evaporator thermistor fault |
| Recommended Action | Check coil temperature sensor |
How to Fix Fujitsu General Error E:12
- 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 E:12 means: Indoor coil temperature sensor error. The most common cause is: Evaporator thermistor fault.
- 3
Take Corrective Action
Check coil temperature sensor
- 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 Fujitsu General error code E:12 mean?
Fujitsu General error code E:12 indicates: Indoor coil temperature sensor error. This is typically caused by: Evaporator thermistor fault.
How do I fix Fujitsu General error code E:12?
To fix Fujitsu General error code E:12: Check coil temperature sensor. If the error persists after these steps, contact a qualified HVAC technician.
Is Fujitsu General error code E:12 serious?
Error code E:12 (Indoor coil temperature sensor error) should be addressed promptly to prevent further damage to your Fujitsu General system. Always turn off the unit if you notice unusual sounds, smells, or continued malfunction.