13
Duct Type Split Air Conditioner
Service Manual
CONTROL
2 MAIN LOGIC
The followings are for FG
(
R
)
20/BNa-M, FG
(
R
)
30/BNa-M
2.1 Cooling
Cooling mode
Compressor
Outdoor fan
Indoor fan
4-way valve
OFF
ON
OFF
ON
OFF
1s
5s
15s
OFF
ON
Run at set speed
Time
OFF
OFF
Manually OFF
OFF
Htap
When Tambient
≥
Tset+1
℃
, the unit will run in cooling mode. In this case, compressor and outdoor fan
run; Indoor fan runs at setting speed.
When Tambient
≤
Tset-1
℃
, the unit will stop running in cooling mode. In this case, compressor and outdoor
fan stop running; Indoor fan runs at setting speed.
When Tset -1
℃<
Tambient
≤
Tset+1
℃
,the unit will keep its previous running state.
2.2 Dry Mode
OFF
ON
OFF
1s
5s
15s
OFF
OFF
OFF
OFF
Manually OFF
Compressor
Outdoor fan
Indoor fan
4-way valve
ON
OFF
ON
Htap
Run at low speed
Time
Dry mode
When Tambient
≥
Tset+2
℃
, the unit will run in cooling mode. In this case, compressor and outdoor fan run;
Indoor fan runs at low speed.
When Tambient
≤
Tset-2
℃
,the unit will stop running in cooling mode. In this case, compressor and outdoor
fan stop running.
When Tset -2
℃<
Tambient
≤
Tset+2
℃
,the unit will be in the state that the compressor runs for 6min and
stops for 4min in cycle. Indoor fan runs at low speed.