Airwell AWAU-YCZ218-H11, Service Manual

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Electrical Control Function
142 Electrical Control System
-1.0
-2.0
-3.0
-4.0
0.0
T1-Ts+ΔT
L
(H+-L)*0.4+L
(H+-L)*0.6+L
-5.0
-6.0
-6.5
H+
(H+-L)*0.8+L
(H+-L)*0.6+L
(H+-L)*0.2+L
For Cassette & Duct:
When the compressor is on, the indoor fan can be set to high, medium, low and auto. And the anti-cold wind
function has the priority.
Auto fan action:
-3.5
T1-Ts-
Δ
T
-4
High
Low
-5
Medium
-4.5
1.3.3.4 Prevent Over-Heating
In heating mode, when the indoor unit has no capacity requirement due to indoor room temperature
increased, the Indoor fan will run in super breeze. (Anti-cold wind function has the priority)
1.3.3.5 Defrosting mode
：
Condition of defrosting:
If any one of the following items is satisfied, AC will enter the defrosting mode.
After the compressor starts up and keeps running, mark the minimum value of T3 from the 10th minutes to
15th minutes as T30.
1)If the compressor cumulate running time is up to 29 minutes and T3< TCDI1, T3
＋
T30SUBT3ONE
≦
T30.
2)If the compressor cumulate running time is up to 35 minutes and T3< TCDI2, T3
＋
T30SUBT3TWO
≦
T30.
3)If the compressor cumulate running time is up to 29 minutes and T3< TCDI3 for 3 minutes.
4)If the compressor cumulate running time is up to 120 minutes and T3<-15
℃
.
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.