B3
Daikin
Daikin air conditioner error B3
Meaning
Blower motor operating in power, temp., or speed limit
Models
DX16TC, DX18TC, DX7TC, DZ16TC, DZ18T, DZ7TC
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.
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. - Indoor or outdoor fan motor error: causes and checks
When the unit reports a fan error: check the mechanics, connectors, supply and speed feedback before replacing the motor or the board.