Vivax ACP-09CH25AEI, Руководство по обслуживанию, Страница: 42 / 54

39
17
15
Low
High
8.4.3.4 Defrosting mode
：
Condition of defrosting:
Condition 1: If T4
＞
0 ,
℃
When the units are running, if the following two items are satisfied, the units start defrosting:
The units run with T3
＜
3 for 40 minutes and T3 keeps lower than
℃
TCDI for more than 3 minutes.
℃
The units run with T3
＜
3 for 80 minutes and T3 keeps lower than
℃
TCDI+2 f
℃
or more than 3
minutes.While TCDI
=
－
6
℃
.
Condition 2: If T4
＜
0 ,
℃
If the 1
st
condition and 2
nd
condition items are satisfied,then the program judges if T2 has decreased
more than 5 .
℃
If T2 has decreased more than 5 ,
℃
the AC will enter the defrosting mode.
Condition 3: No matter what value T4 is, if the machine runs with T3
＜
3 for more than 120 minutes
℃
and T3 keeps lower than TCDI+4 for more than 3 minutes, the machine will enter defrosting mode
℃
no matter if T2 drops more than 5 or not.
℃
Condition of ending defrosting:
If any one of the following items is satisfied, the defrosting will finish and the machine will turn to
normal heating mode.
l
T3 rises to be higher than TCDE1 .
℃
l
T3 keeps to be higher than TCDE2
℃
for 80 seconds.
l
The machine has run for 10 minutes in defrosting mode.
While TCDE1=12
℃
, TCDE2=8
℃
for 9k,12k models.
For 18k,24k models, TCDE1=15
℃
, TCDE2=8
℃
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