Daikin FTXN-LV - Page 36

TS13-01 Troubleshooting manual 36
Troubleshooting
Reconnect
Replace the 4 way
valve coil
No
Yes
Check the continuity of the 4 way
valve coil and harness
Disconnect the harness
from the connector.
Resistance between
harness about 3kΩ ?
Reconnect
Replace outdoor
unit PCB
Check the 4 way valve
switching output.
Functioning?
No
Yes
No
Yes
Any thermsistor
disconnected?
Thermistor
functioning?
Refrigerant line
blockage or
shortage?
Replace the defective
thermsistor
Correct the problem
Replace the 4 way valve
Yes
No
No
Yes
Yes
No
4 way valve coil or
harness disconnected /
loose ?