Energolux SAD48HD1-A, Руководство по обслуживанию

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Light commercial(High ESP Duct 196Pa) Service Manual
51
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Intelligent defrosting function(only in the case of outdoor coil is damaged this function is
carried out)
Entering conditions
On the condition of running intelligent defrosting operation, one of following 7 conditions is satisfied
(As for secondary condition in upper condition, it is only valid that all secondary condition be
satisfied at the same time)
a) Condition No.1
①
The outdoor fan enters into over-load protection and stops running.
②
Outdoor fan stops running then restarts and keeps running over 10 min
③
The compressor accumulating running time ≥45min
④
The compressor continuous running time ≥20min
⑤ TE ≤ 48 ℃。
b) Condition No.2
①
Enter into heating mode 5 min later or finish defrosting 5 min later, catch the max
difference
value between TE and TA
If TE≥38
℃，
when the difference between TE and TA decrease by 5
℃
or more and lasting
time ≥3min
If the difference between TE and TA decrease by 3
℃
or more and lasting time ≥3min
②
The compressor continuous running time ≥5min
③
Th e compressor accumulating running time ≥45min
④
TE ≤ 48
℃；
Note: If there is wind modification, and when indoor fan wind speed descends 1 grade, temperature
modification -1
℃
.when indoor fan wind speed climbs 1 grade, temperature modifi1
℃
c) Condition No.3
①
The compressor accumulating running time ≥3h
②
The continuous compressor running time ≥5min
③ The min. difference between TE and TA ＜ 16 ℃
d) Condition No.4
① The min. difference between TE and TA ＜ 16 ℃ continuously last for 5 min
②
The comp ressor accumulating running time ≥45 min
③
The compressor continuous running time ≥20min
If the condition is satisfied unit will enter into defrosting, current TE will be recorded before
defrosting. When the defrosting is over, and the compressor continuously runs for 10 min,
then compare current TE with TE before defrosting, if the latter doesn’t high than former by
3
℃
or more, next time unit will not enter into defrosting at this condition, until mode switch,
turn off then restart to heating or go through a defrosting yet.
e) Condition No.5
Begin to calculate time once air conditioner enters into over-heating protection, enters into
compulsory defrosting after 2 h later.
f) Condition No.6
①
5 min later after enters into heating mode for the first time, catching max value of TE, if TE
＜
38 ℃
②
The compressor continuous running time ≥5min