York YHKMXH024BARX-FX - Page 234

3.2.6 Defrosting operation ow chart:
Beginning End
60s 60s
inverter compressor
30s
indicated FQY defrosting FQY 85 Hz（E） soft startup
50HZ
32HZ
10s
outdoor fan motor ON send signal to indoor unit auto
OFF
4-way valve ON
OFF
ON
Unload valve SV1 OFF auto
250pulse（E）
PMV auto open angle auto open angle
Indoor fan motor ON
OFF anti-cold air function
Unitary
232