AUX air conditioner service manual
49
⑾Anti-high temperature protection：
①when run on Heating mode，if TE≥57℃ and continuously last 10 seconds, the outdoor fan stops; if
TE≥64℃ and last for 10s，the compressor stops again；When TE< 52℃ and satisfying 3minutes
protection delay condition, the compressor resume normal work.。
②Such temperature protection is valid only if the TE sensor works normally.
⑿The defrosting function under heating mode
①When the outdoor sensor in good condition, the defrosting process starts, and the sleeping light is
twinkling：
a)TW≤-6℃ and continuously last for 2minutes；
b)The accumulated operation time of the compressor is over than 50 minutes, the interval time
between defrosting process is 50 minutes(the accumulated time shall be recalculated if power off or
remote control off ), the continuous working time of the compressor is over 5 minutes.
Once the defrosting process starts, the compressor, the indoor fan and outdoor fan turn off, and the
four-way valve turns off after 30 seconds, and after another 15 seconds the compressor turns on and
starts the defrosting process.
②The defrosting process ending condition：（The defrosting process will quit if one of the below
conditions to be satisfied）
a) Outdoor coil≥12℃；
b) Defrosting process last for 12minutes；
c) The defrosting process quits once change modes or air-conditioner turns off by remote control.
After the defrosting process, the compressor turns off and the outdoor fan turns on; After 55 seconds,
the four-way valve turns on; after another 5 seconds, the compressor turns on; the air-conditioner
resume the normal heating process, the indoor fan runs in the mode of anti-cold wind.
⑻ Auxiliary electric heating function
a)When heating mode working normally, e.g. the compressor starts and the outdoor fan runs and the
four-way valve is electrified and the indoor fan starts, the electric heating starts if satisfying the below
conditions:
A、TE < 48℃；
B、TA < 22℃；
C、TS – TA ≥ 3℃；
D、The compressor runs continuously for 4 minutes with the heating mode;
②The auxiliary electric heating quit operation if satisfying one of the below conditions：
A、TA > 22℃；
B、TS – TA < 2℃；
C、TE > 52℃；
③If anyone of the compressor, four-way valve and indoor fan doesn’t work or fault feedback from the
indoor fan, the auxiliary electric heating quit operation；
④The auxiliary electric heating may be allowed to restart after 1 minutes rest if the auxiliary electric
To Next Page
Loading...
Need help?
General
