Electrical Control Functions - Haier AS072XVERA Service Manual

9. Electrical Control Functions

Outdoor electric control functions:
1. Switch setting and functions:
No
A8 Set in factory
Switch function: SW5-1---outdoor fan motor selection, ON: DC fan motor; OFF: AC fan
motor
Switch function: SW5-2---defrosting data setting, ON=6degree, OFF＝8degree (set
C1
when out of factory).
For the place where is easy to frost, it is 6 degree; for the place hard to frost, it is 8
degree.
Switch function: SW5-3，SW5-4---piping length selection, the set data is M when out of
C2
factory.
S（SW5-3=OFF SW4=ON） L（SW5-3=ON SW4=OFF）
- （SW5-3=ON SW4=ON） M（SW5-3=OFF SW4=OFF）
C3 Switch function: SW5-5，SW5-6---outdoor horse power selection (for different outdoor,
the current limitation is different too. The corresponding selection must be taken, or
the module protection will occur. )
2HP（SW5-5=OFF SW5-6=ON） 2.5HP（SW5-5=ON SW5-6=OFF）
3HP （SW5-5=ON SW5-6=ON） 3.5HP（SW5-5=OFF SW5-6=OFF）
C4 Switch function: SW5-7，SW5-8：
SW5-7－pre-set, set as OFF when out of factory.
SW5-8－silent operation function, ON---available, OFF---not available (set when
out of factory)
When it is ON, the max. fan speed is Class-6, and the max. running frequency is 10Hz.
C8 Set in factory
2. Defination of 4-bit dip switch SW5 on failure indicator board:
1 2 3 4
OFF OFF OFF OFF
OFF ON OFF OFF
ON OFF OFF OFF
OFF OFF ON OFF
3. Main control functions
3.1 Refrigerant diagram
3.1 Refrigerant diagram
Commercial Air Conditioner
State when out of factory (normal state)
Compulsory cooling: frequency 60HZ, outdoor fan motor Class-7, fixed open angle
300, the others are in normal state
Compulsory heating: frequency 50HZ, outdoor fan motor Class-5, fixed open angle
300, the others are in normal state
Rated operation: auto changeover for cool/heat, max. frequency 53HZ(E) in cooling,
and max. frequency 72HZ(E) in heating, the frequency is set automatically in other
states.
-47-
Model: AU18/222XFERA
AS072/092/122XVERA
Item
Defination