Toyotomi CCT140A-M, Руководство по обслуживанию

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Electrical Control Function
Electrical Control
Auto fan action:
For cassette:
1.3.3.3 Defrosting mode
：
For 1-phase outdoor units:
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Condition of defrosting:
AC will enter defrosting mode if any of the following items is satisfied.
A: For DL, high static pressure duct & cassette :The compressor keeps running over 40 minutes and T3
＜
-2
℃
For A5 duct: T3<0
℃
and the compressor keeps running over 45 minutes. Meanwhile T3
＜
-3
℃
for
3minutes.
B: After the last defrosting, the time that the outdoor fan is off but the compressor is on in high T2 protection
cumulates up to 90 minutes.
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Condition of ending defrosting:
If any one of the following items is satisfied, the defrosting will terminate and the machine will turn to normal
heating mode.
A: T3 rises to be higher than 20
℃
.
B: The machine has run for 10 minutes in defrosting.
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Defrosting action
：
For A5 duct:
T1-TS
3 ° C Low
1 ° C High
T2
TE14+2
℃
TE14
Setting
Low for15s, then
off