York YHKJXH012BAM--FX, Руководство по обслуживанию

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exchanger and make defrosting control.
3.5.1 Enter condition:
After the unit is in heating for 10 minutes and compressor run for 45 minutes in all , according
to check the defrosting temp. sensor Te and outdoor ambient temp. sensor Tao, if they can
meet the following condition, entering in defrosting operation.
1
、
5
℃ （
E
）
<Tao
，
Te<=-6
℃ （
E
）；
2
、
-6
℃ （
E
）
<=Tao<=5
℃ ，
Te≤C×Tao
－
α
；
Herein
：
α=8
（
E
）
;C
：
Tao
＜
0
℃ ，
C=0.8; Tao≥0
℃ ，
C=0.6
3.Tao<-6
℃ ，
Te≤-15
℃ （
E
）
and defrosting compressor run for 48 minutes in all
。
3.5.2 Cancel condition:
It will take max. 10minutew from beginning defrosting to quit it. Te sensor will measure the
condition of outdoor heat exchanger, if the temp. is over 10
℃
for 60s or is up to 14
℃
for 30s,
the defrosting will be over.
3.5.3 Defrosting operation flow chart:
Beginning End
60s 60s
30s
inverter compressor 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
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