Daikin FTXN-LV Troubleshooting Manual page 47

Description DC voltage out of range
Supposed Cause
Troubleshooting
Description Communication error (between indoor and outdoor)
Supposed Cause
Troubleshooting
TS13-01 Troubleshooting manual
- Supply voltage not as specified
- DC voltage detection circuit defective
- Faulty outdoor unit PCB
- Faulty indoor unit PCB
Indoor unit – outdoor unit signal transmission error due to wiring error.
-
Indoor unit – outdoor unit signal transmission error due to disturbed power supply
-
waveform.
- Indoor unit- Outdoor unit signal transmission error due to breaking of wire in the
connection wires between the indoor and outdoor units.
U2
Check the supply
voltage
Supply voltage as
specified?
Change outdoor
PCB
U4
Correct the
power supply
47