Ballu BSGI 09, Service Manual

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6
6
.
.
C
C
O
O
N
N
T
T
R
R
O
O
L
L
M
M
O
O
D
D
E
E
L
L
a.
When T
room
– T
set
＞
3
℃
, it will be changed to the cooling mode;
b.
When T
room
– T
set
＜
-3
℃
, it will be changed to the heating mode;
c.
When these conditions are not met, it will remain in the previous run mode.
When the temperature setting is changed, re-judgment will be made for the run mode
according to the descriptions mentioned above; when the compressor is halted for 10 minutes,
the re-judgment will be made for the run mode.
6-3-6-1 Switch between the cooling and heating mode:
T
ambient
t
set
+3
t
set
t
set
-3
Cooling Heating mode Cooling
6-3-6-2 Cooling
→
heating turnover operation
Cooling
→
heating: the compressor stops; 50 s later the 4-way valve is activated and 3 minutes
more the compressor turns on.
Heating
→
cooling: the compressor stops, 50 s later the 4-way valve is interrupted and 3
minutes more the compressor turns on.
6-3-6-3 There is temperature compensation during the auto-run, which is same as cooling and
heating.
6-3-7 Cooling-run mode
6-3-7-1 Temperature compensation
Principle for compensation: The compensation is available only if the proper sensor is used
and it is not available when it is subject to the sensor on the remote controller.
6-3-7-2 Outdoor Fan
The outdoor fan’s speeds are divided into two levels which can be changed over according to
outdoor ambient temperatures.
When operating at a fixed frequency, the outdoor fan is forced to operate at the high speed.
6-3-7-3 Indoor fan
When the fan speed is set at the high, medium and low fan speeds, the fan runs at a preset
speed. When the fan speed setting is automatic, the fan speed is set based on the difference
in room temperatures.
21
BSGI 09(12)