40
Mitsubishi Heavy
Mitsubishi Heavy air conditioner error 40
Meaning
Service valve (gas side) closed operation
Models
SRK15ZTL-W
How the unit shows it
- RUN light (10's digit): 4-time flash
- TIMER light (1's digit): OFF
- Error display: (2 times)
Causes and how to check
- 2 possible causes
- the cited manual page, and follow-up questions
No account needed to look up codes.
Model series: SRK
Guides
- Pressure, low refrigerant and high discharge temperature errors: where to start
Pressure and discharge-temperature protection codes: tell a low charge from a blockage or poor heat rejection before charging.