Mitsubishi Heavy Industries Error Code E42
Compressor overcurrent
Error Code Summary
| Brand | Mitsubishi Heavy Industries |
| Error Code | E42 |
| Meaning | Compressor overcurrent |
| Cause | Compressor drawing excess current |
| Recommended Action | Check compressor, power supply, refrigerant |
How to Fix Mitsubishi Heavy Industries Error E42
- 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 E42 means: Compressor overcurrent. The most common cause is: Compressor drawing excess current.
- 3
Take Corrective Action
Check compressor, power supply, refrigerant
- 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 E42 mean?
Mitsubishi Heavy Industries error code E42 indicates: Compressor overcurrent. This is typically caused by: Compressor drawing excess current.
How do I fix Mitsubishi Heavy Industries error code E42?
To fix Mitsubishi Heavy Industries error code E42: Check compressor, power supply, refrigerant. If the error persists after these steps, contact a qualified HVAC technician.
Is Mitsubishi Heavy Industries error code E42 serious?
Error code E42 (Compressor overcurrent) 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.