3.7.4 Defrosting operation flow chart
beginning end
fixed frequency indicated FQY 60s defrosting FQY 80 Hz（E） 60s soft startup
compressor
0HZ 0HZ
5s
outdoor motor ON send defrosting signal to indoor Auto
OFF
4-way valve ON
OFF 15s
ON
Spray valve SV2 OFF
450-pulse 450-pulse
350-pulse(E)
all EEVs auto open angle auto open angle
all indoor motors ON
OFF anti-cold air function
-51-
Commercial Air Conditioner Model: AU18/222XFERA
AS072/092/122XVERA
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