Mitsubishi Heavy Industries Error Code E56
Power transistor thermistor error
Error Code Summary
| Brand | Mitsubishi Heavy Industries |
| Error Code | E56 |
| Meaning | Power transistor thermistor error |
| Cause | IPM temperature sensor fault |
| Recommended Action | Check IPM thermistor, replace if needed |
How to Fix Mitsubishi Heavy Industries Error E56
- 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 E56 means: Power transistor thermistor error. The most common cause is: IPM temperature sensor fault.
- 3
Take Corrective Action
Check IPM thermistor, replace if needed
- 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 Mitsubishi Heavy Industries error code E56 mean?
Mitsubishi Heavy Industries error code E56 indicates: Power transistor thermistor error. This is typically caused by: IPM temperature sensor fault.
How do I fix Mitsubishi Heavy Industries error code E56?
To fix Mitsubishi Heavy Industries error code E56: Check IPM thermistor, replace if needed. If the error persists after these steps, contact a qualified HVAC technician.
Is Mitsubishi Heavy Industries error code E56 serious?
Error code E56 (Power transistor thermistor error) should be addressed promptly to prevent further damage to your Mitsubishi Heavy Industries system. Always turn off the unit if you notice unusual sounds, smells, or continued malfunction.