Daikin D-Series User Manual

Troubleshooting for SkyAir Indoor Unit Si18-525B
358 Troubleshooting
Check No. 02 Check for Thermistors
Disconnect the thermistor connector from PCB, then measure the resistance by using a tester.
Thermistor temperature and resistance characteristics
Unit : kΩ
Temperature
°C
AB
-6.0 90.8 88.0
-4.0 81.7 79.1
-2.0 73.5 71.1
0.0 66.3 64.1
2.0 59.8 57.8
4.0 54.1 52.3
6.0 48.9 47.3
8.0 44.3 42.9
10.0 40.2 38.9
12.0 36.5 35.3
14.0 33.2 32.1
16.0 30.2 29.2
18.0 27.5 26.6
20.0 25.1 24.3
22.0 23.0 22.2
24.0 21.0 20.3
26.0 19.2 18.5
28.0 17.6 17.0
30.0 16.2 15.6
32.0 14.8 4.2
34.0 13.6 13.1
36.0 12.5 12.0
38.0 11.5 11.1
40.0 10.6 10.3
42.0 9.8 9.5
44.0 9.1 8.8
46.0 8.4 8.2
48.0 7.8 7.6
50.0 7.2 7.0
52.0 6.9 6.7
54.0 6.2 6.0
56.0 5.7 5.5
58.0 5.3 5.2
Application

Heat exchanger
(Indoor/Outdoor units)

Suction air

Remote controller

Air

Outdoor air

Suction pipe

Radiator fin

Daikin D-Series Specifications

General

HSPF Rating	Up to 10.0
Cooling Capacity	9, 000 - 36, 000 BTU/h
Heating Capacity	9, 000 - 36, 000 BTU/h
Energy Efficiency Ratio (EER)	Up to 12.5
Sound Level	19 - 50 dB (Indoor), 49 - 60 dB (Outdoor)
Noise Level	19 - 50 dB (Indoor), 49 - 60 dB (Outdoor)
Power Supply	208/230V, 1-phase, 60Hz