Midea UL-BD386WE-SQ - Fan Motor Control Circuit; Sensor Resistance Data

Service Manual, 2016-12
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10.4Fan motor circuit of the freezing chamber
12 V voltage is reduced to 7~12V through the control chip BD9227F ,output it to F-FAN pin and
connect it to positive pole of fan, to control the operating of fan in different revolution. Check the
voltage between F-FAN pin and GDN pin, to estimate the fan trouble.
10.5Refrigerator fan motor circuit (None)
10.6Condensing fan motor circuit (None)
10.7Damper motor circuit (None)
10.8Resistance value of the sensor (R/T)
Tx(℃)
R（KΩ）
Tx(℃)
R（KΩ）
Tx(℃)
R（KΩ）
Tx(℃)
R（KΩ）
Tx(℃)
R（KΩ）
-30
33.81
-15
14.31
0
6.495
15
3.141
30
1.617
-29
31.85
-14
13.55
1
6.175
16
2.999
31
1.55
-28
30.01
-13
12.83
2
5.873
17
2.865
32
1.486
-27
28.29
-12
12.16
3
5.587
18
2.737
33
1.426
-26
26.68
-11
11.52
4
5.315
19
2.616
34
1.368
-25
25.17
-10
10.92
5
5.06
20
2.501
35
1.312
-24
23.76
-9
10.35
6
4.818
21
2.391
36
1.259
-23
22.43
-8
9.82
7
4.589
22
2.287
37
1.209
-22
21.18
-7
9.316
8
4.372
23
2.188
38
1.161
-21
20.01
-6
8.841
9
4.167
24
2.094
39
1.115