Heat Controller VMH C Series Service Manual page 27

Heat Controller
8.4.3.3 Indoor fan running rules:
If the compressor stops caused by room temperature rising, indoor fan will be forced to run 127
seconds with breeze. During this period, anti-cold-wind is disabled. After this, anti-cold –wind function
is available.
If the machine runs in rating capacity test mode, indoor fan runs with rating speed, and anti-cold-wind
is disabled.
Indoor fan speed can be set on high, medium, low or auto models, but the anti-cold-wind function has
the priority.
The auto fan action in heating mode:
8.4.3.4 Defrosting mode：
The condition of defrosting:
Condition 1: If T4>32°F(0°C),
When the units are running, if the following two items are satisfied the units start defrosting:
VMH 30, 36 SerieS
F° C°
44
111° (44)
100.5° (38)
38
98.6° (37)
37
93° (34)
34
33
91.5° (33)
24
75° (24)
17
62.5° (17)
ΔT=Room Temp – Set Temp
F° C°
36.5° (2.5)
35.5° (2.0)
34.5° (1.5)
34° (1.0)
Setting
Low
Breeze
Super Breeze
Off
medium
25
27
Service Manual