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Service Manual
8.4.2 Cooling Mode
8.4.2.1 Compressor running rules:
The operating frequency of compressor after starting submits to following rule.
T4
°F
113
109
104
100
86
82
72
68
If users switch on A/C by remote controller, the compressor will run at the Fmax frequency for 7 minutes
according to outdoor ambient temp. During the 7 minutes, frequency limitation is active.
7 minutes later, the compressor running frequency will be controlled as below:
While
Temp. zone
Frequency
°C
(45)
(43)
(40)
(38)
(30)
(28)
(22)
(20)
T1-Ts
°F
°C
38
(3.5)
37
(3.0)
37
(2.5)
36
(2.0)
40
(1.5)
34
(1.0)
33
(0.5)
29
(-0.5)
30
(-1.0)
A
F8
VMH SerieS
B
C
D
F8
F7
F6
21
22
Heat Controller, Inc.
E
F
G
F5
F3
F1
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