Daikin VRVII - C1 Transmission Error (between Indoor Unit PCB and Fan PCB)

Troubleshooting by Indication on the Remote Controller
75
3.12
C1
Transmission Error
(between Indoor unit PCB and
Fan PCB)
Remote Controller Display
C1
Applicable Models
FXMQ20~140P
Method of Error Detection
Check the condition of transmission between indoor unit
PCB and fan PCB using micro-computer.
Error Decision Conditions
When normal transmission is not carried out for certain
duration.
Supposed Causes
 Defective connection of the connector between indoor
unit PCB and fan PCB
 Defective indoor unit PCB
 Defective fan PCB
 External factor, such as instantaneous blackout