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℃
PDF 文件使用 "pdfFactory Pro" 试用版本创建 www.fineprint.cn
To Next Page
Loading...
Need help?
General
