Haier HSU-07HV03/R2 Service Manual page 49

2. Run mode:(Tr: inlet air temperature,Ts£ºthe set temperature)
2.1 automatic run mode
The background lighting of the LCD is white
1) cooling only type 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¡ÝTs+3¡æ Choose Cooling mode
Tr<Ts-3¡æ Choose Blowing Mode
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¡æ; if the system is currently under blowing mode, it will in
turn switch to cooling mode when Tr > Ts+3¡æ. The switching mode as below,
2) cold/warm type run mode:
When the system runs under "automatic" mode for the first time, it will determine the
operating mode according to the follows,
Tr¡ÝTs-3¡æ
Tr£¼Ts-3 ¡æ
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, the compressor
will stop functioning if the temperature lowers to such a degree that requires so; then it
will recheck the temperature 15 minutes later: it will switch to the heating mode if the
temperature is Tr£¼Ts-3 ¡æ,or it will still stay in cooling mode(including blowing mode).
if the system is currently under heating mode, the compressor will stop running if the
temperatur lowers to such a degree that requires so, then it will recheck teh temperatur
Air Conditioner
Choose Cooling Mode
Choose Heating Mode
Edition:2006/1/10