Haier AD35S2SM3FA - Page 218

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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
450-pulse 450-pulse
350-pulse(E)
All EEVs Auto open angle Auto open angle
All indoor motors ON
OFF Anti- cold air fun ction
Multi:
Frequency Control When Td is too High
Purpose: make compressor frequency control if the discharging temp. is too high, to lower the discharging temp.
efciently and ensure the system can run normally.
Discharging t
emp.
Td
Reduce FQY rapidly 2HZ/S
Reduce FQY rapidly 1HZ/S
Reduce FQY slowly 1HZ/10S
Remain FQY
Increase FQY slowly 1HZ/10S
118℃
115℃
112℃
109℃
105℃
95℃
Unitary:
Multi:
Discharging temp. TD
Reduce FQY rapidly 2HZ/S
Reduce FQY rapidly 1HZ/S
Reduce FQY slowly 1HZ/10S
Remain FQY
Increase FQY slowly 1HZ/10S
120℃
115℃
110℃
105℃
100℃
95℃
If keeping for 10s, the unit stops, 3 minutes later, the unit can
re-startup. If in 60 minutesthe unit occurs alarm for 3 times, the
failure can be eliminated.
If keeping for 10s, the unit stops, 3 minutes later, the unit can
re-startup. If in 60 minutesthe unit occurs alarm for 3 times, the
failure can be eliminated.