Hitachi Error Code 35
Indoor unit number duplicated
Error Code Summary
| Brand | Hitachi |
| Error Code | 35 |
| Meaning | Indoor unit number duplicated |
| Cause | Multiple units with same address |
| Recommended Action | Assign unique addresses to each unit |
How to Fix Hitachi Error 35
- 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 35 means: Indoor unit number duplicated. The most common cause is: Multiple units with same address.
- 3
Take Corrective Action
Assign unique addresses to each unit
- 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 Hitachi error code 35 mean?
Hitachi error code 35 indicates: Indoor unit number duplicated. This is typically caused by: Multiple units with same address.
How do I fix Hitachi error code 35?
To fix Hitachi error code 35: Assign unique addresses to each unit. If the error persists after these steps, contact a qualified HVAC technician.
Is Hitachi error code 35 serious?
Error code 35 (Indoor unit number duplicated) should be addressed promptly to prevent further damage to your Hitachi system. Always turn off the unit if you notice unusual sounds, smells, or continued malfunction.