Panasonic S-45PU1E5 Technical Data & Service Manual page 302

F12 Compressor inlet suction temperature sensor (TS) trouble
1. Error Detection Method
It is judged an error when open circuit or short circuit.
2. Error Diagnosis
1 Sensor
1-1
1-2
2 Outdoor
control
2-1
PC board
5
Sensor connector is connected to PC board properly.
Resistance between sockets is infinity or 0 ohm.
Replace PC board because of outdoor control PC board failure.
5-30
Yes 1-2
No Reconnect and check
Yes Replace sensor
No 2-1