1B
Toshiba
Toshiba air conditioner error 1B
Meaning
Outdoor air temperature sensor (TO) error
Models
Heat pump RAS-3M18G3AVG-E, RAS-2M18G3AVG-E
Meaning
Outside temp. sensor (TO) error
Models
Heat pump RAS-3M18G3AVG-E, RAS-2M18G3AVG-E
How the unit shows it
- Outdoor LED display: *●○*○*●○
Causes and how to check
- 3 possible causes
- 2 checks in order
- the repair procedure printed in the service manual
- the cited manual page, and follow-up questions
No account needed to look up codes.
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.