18
Duct Type Split Air Conditioner
Service Manual
CONTROL
Sequence chart of unit stop during heating operation
Time
10s
60s
Control object
Compressor
Outdoor fan
Indoor fan
Auxiliary
electric heater
4-way valve
ON
ON
ON
ON
ON
OFF
OFF
OFF
(AEH woking condition)
Room temperature is set to be 16-30
℃
and 24
℃
is default.
When Tambient
≤
Tset-1
℃
, the unit will run in heating mode. In this case, compressor and outdoor fan run;
Indoor fan runs at setting speed and under the condition of anti-cold air.
When Tambient
≥
Tset+1
℃
,compressor and outdoor fan stop running, the 4-way valve is still energized
and indoor
fan runs under the condition of blowing residual heat.
When Tset -1
℃＜
Tambient
＜
Tset+1
℃
,the unit will keep its previous running state.
2.10 Defrosting mode
Sequence chart of unit start during defrosting operation
Control object
Compressor
Outdoor fan
Indoor fan
OFF
Time
ON
ON
ON
ON
ON
OFF
OFF
OFF
Run for 45min
45min50s 60s
Defrosting command
Outdoor
Auxiliary electric
heater
4-way valve
Sequence chart of unit stop during defrosting operation
To Next Page
Loading...
