Vivax ACP-09CH25GECI, Service Manual, Page: 25 / 69

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Ď 3-minute Delay for Protection of Compressors
When outdoor unit is de-energized, in cooling, drying or heating mode, before each startup, compressor must have been stopped for
3 minutes.
ď
Control of Outdoor Electric Heating Band (reserved for low temperature model)
If not in heating mode or temp sensor has malfunction, electric heating bands of compressor and of condenser will stop operation,
otherwise, the below control logic will be followed.
1. Control of Compressor Electric Heating Band
If compressor starts up, electric heating band of compressor will not operate;
When compressor stops operation, if Toudoor amb. ≤-5°C for continuous 5s, electric heating band of compressor will operate.
If detecting that Toutdoor amb. >-2°C, electric heating band will not operate.
If -5°C<Toutdoor amb. ≤-2°C, electric heating band of compressor will keep its previous status.
2. Control of condenser electric heating band:
ķ When Toutdoor ambient ” 1 ć , condenser electric heating band starts working;
ĸ
When enter defrosting and defrosting is finished, within 3min after the compressor starts up, the chassis electric heating band
operates; after the compressor runs for 3min and Toutdoor ambient
•
3
ć
, the electric heating band stops working;
Ĺ
When Toutdoor ambient
•
3
ć
, the condenser electric heating band doesn’t working;
ĺ
When 1
ć˘
Toutdoor ambient
˘
3
ć
, the condenser electric heating band keeps the previous status.