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
/22
2XFERA
AS072/092/122XVERA