Daikin REYQ8-48PY1B - C1 Indoor Unit: Failure of Transmission (between Indoor Unit PCB and Fan PCB)

SiBE37-701_B Troubleshooting by Indication on the Remote Controller
Troubleshooting 278
3.10
“
C1
”
Indoor Unit: Failure of Transmission (Between
Indoor unit PCB and Fan PCB)
Remote
Controller
Display
C1
Applicable
Models
FXMQ20~140P
Method of
Malfunction
Detection
Check the condition of transmission between indoor PCB (A1P) and PCB for fan (A2P) using
computer.
Malfunction
Decision
Conditions
When normal transmission is not conducted for certain duration.
Supposed
Causes

Connection defect of the connecter between indoor PCB (A1P) and PCB for fan (A2P).

Malfunction of indoor PCB (A1P).

Malfunction of PCB for fan (A2P).

External factor, such as instantaneous blackout.