Panasonic S-36PU1E5 Technical Data & Service Manual page 346

R410a inverter, indoor/outdoor units, 4-way cassette, ceiling, wall mounted, low shilhouette ducted, ducted
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F04 Compressor discharge temperature sensor (TD) trouble
1.
Error Detection Method
It is judged an error based on the criteria listed below.
Open circuit or Short circuit
When compressor stopped temporally, even after 20 minutes passed, over 103°C of discharge temperature is detected.
Compressor stopped and remained over 60 minutes but over 93°C of discharge temperature is detected.
2.
Error Diagnosis
1 Sensor
1-1
1-2
1-3
2 PC board
2-1
2-2
3 Operating
5
3-1
status
3-2
3-3
Sensor connector is connected to PC board properly.
Sensor is correctly installed at holder side.
Abnormal temperature exists even after replacing sensor.
Resistance between connector pins on PC board is less than
1 k ohm
Abnormal temperature exists even after replacing PC board.
Peripheral temperature of outdoor unit is over 46°C.
Tends to have insufficient refrigerant charge in the system.
Check noise.
5-26
Yes
1-2
No
Reconnect and check
Yes
Replace sensor
No
Correct and see what
happens.
1-3
Yes
2-1
No
See what happens.
Yes
Replace PC board
No
2-2
Yes
3-1
No
See what happens.
Yes
Correct
No
3-2
Adjust the amount
Yes
of refrigerant
No
3-3

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