Emergency Operation - Panasonic CS-F24DD2E5 Service Manual

12.5. Emergency operation

If there is an abnormality in the temperature thermistor (disconnect or shorted), indoor unit cannot be operated.
If abnormality detected in the indoor or outdoor unit, turn off the main power supply and find the cause.
Check the resistance of each thermistor of both indoor and outdoor units by referring the resistance table as follows.
Thermistor resistance table
Temperature
(°C)
-20
-10
-5
0
5
10
15
20
25
30
40
50
60
70
80
90
100
During outdoor unit emergency operation or test operation, the LED on the P.C.B. will flash.
Indoor
Room
temperature thermistor temperature thermistor
158.5
87.5
66.1
50.5
38.9
30.3
23.8
18.8
15
12.1
8
5.4
3.7
-
-
-
-
Resistance value (kΩ)±5%
Pipe Discharge
temperature thermistor
211.3 528.3
116.7 291.8
88.2 220.5
67.3 168.3
51.9 129.8
40.4 100.9
31.7 79.2
25.1 62.7
20 50
16.1 40.2
10.6 26.5
7.2 17.9
5 12.4
3.5 8.8
2.5 6.3
1.9 4.7
1.4 3.5
93
Outdoor
Pipe
temperature thermistor
47.9
27.1
20.7
15.9
12.4
9.8
7.7
6.2
5
4
2.7
1.9
1.3
0.9
-
-
-