E3
Casper
Casper air conditioner error E3
Meaning
Outdoor coil temperature sensor (OPT)
Models
TAC-09CHSA, TAC-12CHSA, TAC-18CHSA, TAC-24CHSA
How the unit shows it
- LED Code: RUN-3 times /8s
Causes and how to check
- the repair procedure printed in the service manual
- the cited manual page, and follow-up questions
No account needed to look up codes.
Model series: TAC
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.