Ballu KFR-28GW/BP Series, Service Manual

Page: 32 / 70

7.CONTROL MODE
31
Section 2 Run Mode of Air Conditioner
Use the remote controller, and set the air conditioner in the following run modes: automatic, heating, cooling,
dehumidifying and air freshening.
1. Automatic
(1) When Troom temperature Ttemperature setting, the air conditioner is running in the cooling mode;
(2) When Troom temperature Ttemperature setting, the air conditioner is running in the heating mode.
Once a run mode is determined, it must not be changed within 30 minutes except that following conditions
are met: When in the automatic cooling mode,
Troom temperature Ttemperature setting -3, the air conditioner immediately enters the heating mode, or
when in the automatic heating mode, Troom temperature Ttemperature s3, the air conditioner
immediately enters the cooling mode.
2. Cooling mode
(1) The airflow rate of the indoor fan can be set by the remote controller:
a. Model KFR-28GW/BPx2/2801 GW/BPx2
Low: 900 rpm Medium: 1,100 rpm High: 1,200 rpm High efficiency: 1,300 rpm
b. KFR-2601 GW/BPx2
Low: 1,350 rpm Medium: 1,500 rpm High: 1,600 rpm High efficiency: 1,700 rpm
Automatic
T
temperature set ting
-
T
room temperature
Airflow rate T
temperature set ting
-
T
room temperature
Airflow
rate
1 Low 1 Low
2 Low 2 Medium
3 Medium 3 Medium
4 Medium 4 High
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ir
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em
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er
at
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if
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ce
5 High
D
ir
ec
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f
T
em
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er
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if
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if
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5 High
°Ñ
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(2) The control of the indoor air throttle motor is carried out according to the setting on the remote
controller. Refer to the Use and Installation Manual.
(3) Control of compressor
The target frequency at which the compressor runs is determined by the difference between the
temperature setting and actual room temperature. Larger the difference, higher the frequency. The
voltage is available by referring to the V/F curve of the compressor.
a. Model KFR-28GW/BPx2/2801 GW/BPx2
Single Double
Minimum Maximum Rated
Frequency
Minimum Maximum Rated
Frequency
15 70 40 15 90 74