18
TROUBLE SHOOTING
If you find the ice on the outdoor side, please check the P.C.B as following.
1) P.C. B test function.
1) Remove the sensor connector from the P.C.B.
2) Supply the power
3) Short the sensor connector (pin 1 and 3 of CN1) for 3 seconds over.
4) If the relay(RL1) is on and off just one time, the P.C.B. is regard of correct.
5) Connect the sensor to the P.C.B. again.
2) R-T TABLE OF SENSOR.
3) RELAY CHECK
If the resistance is “zero” between the two pin L1 and L3, the relay(RL1) is O.K.
(The check must be conducted after the power supply cord is removed.)
4) If the P.C.B, Sensor, Relay are correct all, please check the other parts.
TEMP(°C)
-5
-4
-3
-2
-1
0
1
2
3
4
5
R(KOhm)
43.67
41.35
39.18
37.13
35.21
33.4
31.69
30.08
28.57
27.14
25.79
Voltage(V)
1.117
1.165
1.213
1.264
1.315
1.368
1.421
1.474
1.529
1.584
1.641
TEMP(°C)
6
7
8
9
10
11
12
13
14
15
16
R(KOhm)
24.52
23.31
22.18
21.11
20.11
19.14
18.23
17.38
16.56
15.81
15.07
Voltage(V)
1.696
1.753
1.811
1.868
1.926
1.984
2.043
2.101
2.16
2.218
2.277
