Indoor Unit Pcb Abnormality - Daikin FTXS30LVJU 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
 Wrong models interconnected
Supposed
 Defective indoor unit PCB
Causes
 Disconnection of connector
 Reduction of power supply voltage
95
SiUS091133
Service Diagnosis