Haier 1U50JECFRA-3 Service Manual page 23
Outdoor unit dc inverter
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Also See for 1U50JECFRA-3:
- Service manual (537 pages) ,
- Installation manual (320 pages) ,
- Installation manual (34 pages)
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control-driven chip will enter into weak magnetic control, this will help to relieve the problem of
modification rate. If during the course of weak magnetic control, the modification rate is still not high
enough, enter into the control of decreasing frequency until the alarm of modification rate is relieved.
7.1.5.7 Temperature protection of the outdoor refrigerating coil
When the frequency are higher than 40Hz,and the defrosting sensor's temperature are higher than
68
, the frequency of the compressor decreases 1hz/10seconds. Keep the frequency until it
decreases to the lowest frequency. When the temperatures are lower than 68
keep the frequency of the compressor. When the temperatures are lower than 62 , relieve the
defrosting temperature protection.
7.2 Value of Thermistor
R25 =10K
3% B25 /50 =3700K 3%
Temp.( )
-30
-29
-28
-27
-26
-25
-24
-23
-22
-21
-20
-19
-18
-17
-16
-15
-14
-13
-12
-11
-10
-9
-8
-7
-6
-5
-4
-3
Ambient Sensor, Defrosting Sensor, Pipe sensor
Max.(K )
Normal(K )
165.2170
147.9497
155.5754
139.5600
146.5609
131.7022
138.1285
124.3392
130.2371
117.4366
122.8484
110.9627
115.9272
104.8882
109.4410
99.1858
103.3598
93.8305
97.6556
88.7989
92.3028
84.0695
87.2775
79.6222
82.5577
75.4384
78.1230
71.5010
73.9543
67.7939
70.0342
64.3023
66.3463
61.0123
62.8755
57.9110
59.6076
54.9866
56.5296
52.2278
53.6294
49.6244
50.8956
47.1666
48.3178
44.8454
45.8860
42.6525
43.5912
40.5800
41.4249
38.6207
39.3792
36.7676
37.4465
35.0144
Min.(K )
132.3678
125.0806
118.2434
111.8256
105.7989
100.1367
94.8149
89.8106
85.1031
80.6728
76.5017
72.5729
68.8710
65.3815
62.0907
58.9863
56.0565
53.2905
50.6781
48.2099
45.8771
43.6714
41.5851
39.6112
37.7429
35.9739
34.2983
32.7108
21
Functions and control
and higher than 62 ,
Tolerance( )
-1.94
1.75
-1.93
1.74
-1.91
1.73
-1.89
1.71
-1.87
1.70
-1.85
1.69
-1.83
1.67
-1.81
1.66
-1.80
1.64
-1.78
1.63
-1.76
1.62
-1.74
1.60
-1.72
1.59
-1.70
1.57
-1.68
1.55
-1.66
1.54
-1.64
1.52
-1.62
1.51
-1.60
1.49
-1.58
1.47
-1.56
1.46
-1.54
1.44
-1.51
1.42
-1.49
1.40
-1.47
1.39
-1.45
1.37
-1.43
1.35
-1.41
1.33
Domestic air conditioner
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