Fisher FSKIF-121AE2-EU Service Manual page 136

Troubleshooting
2.4 Solving steps for typical malfunction
2.4.1 For the indoor unit
2.4.1.1 Open or short circuit of temperature sensor
Check the connections
between temperature
sensor and PCB. Are the
connections good?
Yes
Measure the resistance value
of the sensor via Appendix 1
Is it normal?
Yes
Replace the indoor PCB
2.4.1.2. Outdoor unit malfunction
132
No Correct the connections.
No Replace the sensor.
Electrical Control System