Indoor Unit Pcb Abnormality - Daikin FTXS20K2V1B Service Manual

Troubleshooting
4.2

Indoor Unit PCB Abnormality

A1
Remote
Controller
Display
Method of
The system checks if the circuit works properly within the microcomputer of the indoor unit.
Malfunction
Detection
Malfunction
The system cannot set the internal settings.
Decision
Conditions
Supposed
Causes
66
Wrong models interconnected
Defective indoor unit PCB
Disconnection of connector
Reduction of power supply voltage
SiBE041134
Service Diagnosis