Release Protective Control By Temperature Of Indoor Heat Exchanger - Toshiba RAS-B10N3KV2-E Service Manual

Item
6. Release protective <In cooling/dry operation>
control by tempera-
(Prevent-freezing control for indoor heat exchanger)
ture of indoor heat
In cooling/dry operation, the sensor of indoor heat
exchanger
exchanger detects evaporation temperature and
controls the compressor speed so that temperature of
the heat exchanger does not exceed the specified
value.
7˚C
6˚C
5˚C
Reduction of compressor speed
<In heating operation>
(Prevent-overpressure control for refrigerating cycle)
In heating operation, the sensor of indoor heat ex-
changer detects condensation temperature and controls
the compressor speed so that temperature of the heat
exchanger does not exceed the specified value.
Reduction of compressor speed
55˚C
52˚C
48˚C
Operation flow and applicable data, etc.
Usual cooling capacity control
Usual heating capacity control
R
When the value is
in Q zone, the
Q
compressor speed
is kept.
P
P
When the value is
Q
in Q zone, the
compressor speed
is kept.
R
– –
32
FILE NO. SVM-12050
Description
1) When temperature of the indoor
heat exchanger drops below 5°C,
the compressor speed is
reduced. (P zone)
2) When temperature of the indoor
heat exchanger rises in the
range from 6°C to under 7°C, the
compressor speed is kept.
(Q zone)
3) When temperature of the indoor
heat exchanger rises to 7°C or
higher, the capacity control
operation returns to the usual
control in cooling operation.
(R zone)
1) When temperature of the indoor
heat exchanger rises in the
range from 50°C to 55°C, the
compressor speed is kept.
(Q zone)
When temperature of the indoor
heat exchanger drops in the
range from 46°C to under 55°C,
the compressor speed is kept.
(Q zone)
2) When temperature of the indoor
heat exchanger rises to 55°C or
higher, the compressor speed is
reduced. (P zone)
3) When temperature of the indoor
heat exchanger does not rise to
50°C, or when it drops below to
46°C, the capacity control
operation returns to the usual
control in heating operation.
(R zone)