29
Heat Controller
VMH 30, 36 SerieS
Service Manual
27
8.4.3.5 High evaporator coil temp.T2 protection:
(1) T2>127.5°F(53°C), compressor running frequency decreases to the lower level and runs for 20
seconds.
When the frequency decreases to F2 and the T2 exceeds 127.5°F(53°C) for 3 minutes, the
compressor will stop.
(2) If T2<118.5°F(48°C) or T2 stays in 118.5°F(48°C)~127.5°F(53°C) for 6 minutes, the frequency will
not be limited by T2.
(3) If T2>1, the compressor will stop and restart when T2<118.5°F(48°C).
8.4.4 Drying mode
8.4.4.1 Indoor fan speed is fixed at breeze and can’t be changed. The louver angle is the same as
cooling mode.
8.4.4.2 Compressor running rules
2.0
1.5
1.0
F3
F2
F1
F1
2.5
0.5
0.0
8.4.4.3 Too low room temperature protection
In drying mode, if room temperature is lower than 50°F(10°C), the compressor will stop and not
resume until room temperature exceeds 53.5°F(12°C).
8.4.4.4 Evaporator anti-freezing protection, condenser high temperature protection and outdoor unit
frequency limit are active just as in cooling mode.
8.4.4.5 The outdoor fan operates the same as in cooling mode.
F°
36.5°
35.5°
34.5°
34°
33°
32°
C°
(2.5)
(2.0)
(1.5)
(1.0)
(0.5)
(0.0)
T1 - Ts
