Haier HSU-07LE03 [14/78] 1 1 automatic running

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Including brief introduction to air conditioners of series models and electric control function.

5-1 Brief introduction to electric control function

5-1-1 Automatic running

When the running mode is turned to automation after starting the system, the system will

first determine the running mode according to the current room temperature and then will run

according to the determined mode. Tr in the following selection conditions means room

temperature, Ts means setting temperature, Tp means temperature of indoor coil pipe

Trı26ć running refrigerating mode Ts=26ć

Tr<26ć running fan mode

After turning to the automation mode, the running mode can be switched between

refrigerating mode, fan mode and heating mode according to the change of the indoor ambient

temperature.

5-1-2 cool running

when Tr t Ts, outlet air from compressor is on and indoor fan motor run at fixed wind speed.

When Tr  Ts, outlet air from compressor is off ,

and when Tr > Ts, outdoor fan motor and compressor are on.

5-1-3 Dehumidification running

The compressor, outdoor fan and indoor fan will run as per the following working pattern so as to

realize the refrigerating running of dehumidification:

ķ Tr> Ts+2ć, compressor, outdoor fan run continuously, indoor fan runs as per setting wind speed

(State 1);

ĸ Ts+2 ćıTrıTs, compressor, outdoor fan run intermittently with 10 minutes ON, 6 minutes

OFF. (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)

Ĺ Tr <Ts, compressor, outdoor fan ceases, indoor fan runs in lower wind speed. (State 3)

State1

State2

State3

Ts-1 Ts Ts+2 Ts+3