LED:RUN=1-TIME FLASH,TIMER=ON
Mitsubishi Heavy
Mitsubishi Heavy air conditioner error LED:RUN=1-TIME FLASH,TIMER=ON
Meaning
Heat exchanger temperature sensor 1 error
Models
SRK15ZTL-W
How the unit shows it
- Indoor RUN light: 1-time flash
- Indoor TIMER light: ON
- Display (flashing) condition: When a heat exchanger temperature sensor 1 wire disconnection is detected while operation is stopped. (If a temperature of -28ºC or lower is detected for 15 seconds, it is judged that the wire is disconnected.) (Not displayed during operation.)
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
- Checking an air conditioner temperature sensor (thermistor)
How to check the room, coil or discharge sensor when the unit reports a sensor error: measure its resistance and compare with the exact model's table.