Daikin Error Code H8
CT sensor fault
Error Code Summary
| Brand | Daikin |
| Error Code | H8 |
| Meaning | CT sensor fault |
| Cause | Current transformer failure |
| Recommended Action | Check CT sensor and wiring |
How to Fix Daikin Error H8
- 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 H8 means: CT sensor fault. The most common cause is: Current transformer failure.
- 3
Take Corrective Action
Check CT sensor and wiring
- 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 Daikin error code H8 mean?
Daikin error code H8 indicates: CT sensor fault. This is typically caused by: Current transformer failure.
How do I fix Daikin error code H8?
To fix Daikin error code H8: Check CT sensor and wiring. If the error persists after these steps, contact a qualified HVAC technician.
Is Daikin error code H8 serious?
Error code H8 (CT sensor fault) should be addressed promptly to prevent further damage to your Daikin system. Always turn off the unit if you notice unusual sounds, smells, or continued malfunction.