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valve
Outdoor unit
Intdoor unit
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min.
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amb .
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Set fan speedSet fan speed
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the heating icon is on for a while and then extinguish.
ƹ When Tamb.-TsupplementaryTse t-1 ć, the unit starts heating operation. In this case, the 4-way valve, compressor and ODU fan
motor run simultaneously; the IDU fan motor will run after a while to prevent blowing cold air.
ƹ When Tamb.-TsupplementaryTset+ 1ć, the compressor and ODU fan motor stop; the 4-way valve remains energized; the IDU fan
motor blows residual heat for a while in set speed.
ƹ When Tset-1ć˘Tamb.-Tsupplementary˘Ts et +1 ć, the unit will maintain its previous running status.
During operation, if the controller detects that Ttube
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