Release Protective Control By Temperature Of Indoor Heat Exchanger - Toshiba Carrier RAS-12EKCV-UL Service Manual

Item
6. Release protective
control by tempera-
ture of indoor heat
exchanger
45 F
(7 C)
43 F
(6 C)
41 F
(5 C)
Operation flow and applicable data, etc.
<In cooling/dry operation>
(Prevent-freezing control for indoor heat exchanger)
In cooling/dry operation, the sensor of indoor heat
exchanger detects evaporation temperature and
controls the compressor speed so that temperature of
the heat exchanger does not exceed the specified
value.
Usual cooling capacity control
Reduction of compressor speed
R
When the value is
in Q zone, the
Q
compressor speed
is kept.
P
– 33 –
FILE NO. SVM-13071
Description
1) When temperature of the indoor
heat exchanger drops below 41°F
(5°C), the compressor speed is
reduced. (P zone)
2) When temperature of the indoor
heat exchanger rises in the
range from 43°F (6°C) to under
45°F (7°C), the compressor
speed is kept. (Q zone)
3) When temperature of the indoor
heat exchanger rises to 45°F (7°C)
or higher, the capacity control
operation returns to the usual
control in cooling operation.
(R zone)