Ballu KFR-28GW/BP Series, Service Manual

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7.CONTROL MODE
32
Single Double
Minimum Maximum Rated Frequency Minimum Maximum Rated
Frequency
35 70 43 35 90 80
(4) Control of four-way valve
The four-way valve is always in the cut-off position.
(5) Outdoor fan motor
T outdoor temperature 28 , High airflow rate
T outdoor temperature 28 , the airflow rate depends on the outdoor coil pipe temperature Toutdoor coil
pipe:
T outdoor coil pipe 40 , high airflow rate
35 T outdoor coil pipe 40 , medium airflow rate
T outdoor coil pipe 30 , low airflow rate
(6) Control of electronic expansion valve:
A. Control of the primary valve's openness
B. Control of exhaust
C. Control of capacity
(7) Anti-freezing for evaporator
2 Tindoor coil pipe 5 , the compressor frequency is prohibited from ascending.
-1 Tindoor coil pipe 2 , the compressor frequency goes down.
Tindoor coil pipe -1 , the compressor is interrupted, and the trouble alarm is given.
3. Dehumidifying mode
(1) When Ttemperature setting- Troom temperature 2 , the system enters the dehumidifying run.
The indoor fan is forced to run at the “ultra low” airflow rate. When turn off the machine and restart it, the
fan starts after a 3 minutes delay.
Under the dehumidifying mode, press the “High Efficiency ” button, and the control mode is same as that
in the cooling cycle.
The outdoor unit control is same as that in the cooling cycle.
(2) Ttemperature setting- Troom temperature 2 , the air conditioner runs in the cooling mode.
b. Model KFR-2601 GW/BPõ2Å
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