Haier V Series Service Manual page 14

Run mode:(Tr: inlet air temperature,Ts the set temperature)
5-1-1 automatic run mode
When the system runs under "automatic" mode for the first time, it will determine the operating
mode according to the follows,
Tr Ts+3
Tr<Ts-3
The system will shift its operating mode between the above mentioned two to changes of the
indoor temperature. If the system is currently under cooling mode, it will switch to blowing
mode when Tr<Ts-3 ; if the system is currently under blowing mode, it will in turn switch to
cooling mode when Tr > Ts+3 . The switching mode as below,
5-1-2Cooling run mode:
Temperature control range : 16
Temperature control precision: 1 .
Compressor can't be controlled by temperature sensor within 2 minutes after it starts
When Tr> Ts, outdoor fan motor and compressor on, and indoor fan motor run at fixed wind
speed. When Tr
and compressor are working again .If Tr=Ts, the indoor fan motor , outdoor fan motor and the
compressor's state will not change.
5-1-3 Dehumidifying mode:
The compressor, outdoor fan and indoor fan will run as per the following
working pattern so as to realize the refrigerating running of dehumidification:
Tr> Ts+2 , compressor, outdoor fan run continuously, indoor fan runs as per setting wind
speed (State 1);
Ts+2
(Compressor and outdoor fan are synchronous) indoor fan runs in fixed lower wind speed, and will
cease at the stand-by time of 3 minutes (State 2)
Tr <Ts, compressor, outdoor fan ceases, indoor fan runs in lower windspeed. (State 3)
Choose Cooling mode
Choolse Blowing Mode
Ts, outdoor fan motor and compressor off, and when Tr > Ts, outdoor fan motor
Tr Ts, compressor, outdoor fan run intermittently with 10minutes ON, 6 minutes OFF.
State2
State3
Ts-1 Ts
30
State1
Ts+2 Ts+2
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