Gree FG20/BNa-M, Руководство по обслуживанию

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17
Duct Type Split Air Conditioner
Service Manual
CONTROL
Room temperature is set to be 16-30
℃
and 24
℃
is default.
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.
2.8 Fan mode
Sequence chart during fan operation
Compressor
Outdoor fan
Indoor fan
OFF
Time
Control object
ON
ON
ON
ON
ON
OFF
OFF
OFF
Run for 45min
45min50s
60s
Defrosting command
Outdoor
Auxiliary electric
heater
4-way valve
When fan mode is set, the unit will run in fan mode.
Other parts
Indoor fan
Time
Control object
ON
ON
OFF
V(set)
2.9 Heating mode
Sequence chart of unit start during heating operation
Indoor fan
Compressor
Outdoor fan
Time
Auxiliary electric
heater (AEH)
>180s
5s
ON
ON
ON
OFF
OFF
OFF
OFF
(Vset)
ON
ON
(AEH working condition )
(A nti cold air condition)
>180s
5s
Control object
4-way valve