Emergency Operation - Panasonic CU-B14DBE5 Service Manual

12.4. Emergency operation

When using the wireless remote control and losing the remote controller, emergency operation can be operated by pressing auto
button in the receiver.
• Press the auto button continuously within 5 seconds
Press the auto button continuously within 5 seconds
• Press the auto button continuously for more than 5 seconds to less than 8 seconds
• Press the auto button continuously for more than 8 seconds to less than 11 seconds
Press the auto button continuously for more than 11 seconds to less than 16 seconds
Press the auto button continuously for more than 16 seconds to less than 21 seconds
Press the auto button continuously for more than 21 seconds to less than 26 seconds
Press the auto button continuously for more than 26 seconds to less than 31 seconds
During the above each stage, finally press the SET button, then the operation mode can be decided.
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
→ emergency operation
→ cooling test operation
→ cooling test operation
→ set remote controller address
→ remote controller address confirmation mode
→ change address of branch unit
→ individual change mode
Indoor
Room 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 temperature Discharge temperature
thermistor
211.3
116.7
88.2
67.3
51.9
40.4
31.7
25.1
20
16.1
10.6
7.2
5
87
Outdoor
Pipe temperature
thermistor thermistor
528.3
291.8
220.5
168.3
129.8
100.9
79.2
62.7
50
40.2
26.5
17.9
12.4
47.9
27.1
20.7
15.9
12.4
9.8
7.7
6.2
5
4
2.7
1.9
1.3