Airwell 7SP091170, Service Manual

Page: 114 / 151

Electrical Control Function
112 Electrical Control System
----T3 rises to be higher than TCDE1
℃
.
----T3 keeps to be higher than TCDE2
℃
for 80 seconds.
----The machine has run for 10 minutes in defrosting mode.
Defrosting action
：
4-Way valve
Indoor fan
Outdoor fan
480P
PMV
PMV running
4 mins with 480P
Compressor
10S 30S
TimeA 10S
no longer than 10min
Cool-F9
Anti cold wind
1.3.3.5 High evaporator coil temp.T2 protection:
If T2>63
℃
, the indoor unit has no capacity demand and resume till 48
℃
.
.
1.3.4 Auto-mode
This mode can be chosen with remote controller and the setting temperature can be changed between
17~30
℃
.
In auto mode, the machine will choose cooling, heating or fan-
only mode according to ΔT (ΔT =T1-Ts).
ΔT=T1-Ts
Running mode
ΔT ＞
1
℃
Cooling
-
1<ΔT≤1
℃ Fan-only
ΔT≤-1
℃ Heating
Indoor fan will run at auto fan of the relevant mode.
The louver operates same as in relevant mode.
If the machine switches mode between heating and cooling, the compressor will keep stopping for 15
minutes and then choose mode according to T1-Ts.
If the setting temperature is modified, the machine will choose running function again.
1.3.5 Drying mode
HKD,HND(9K,12K)
Indoor fan speed is
fixed at breeze and can’t be changed. The louver angle is the same as in cooling mode.