Haier HSU-12HA03/Z1 [8/32] 2 indoor temperature control

2. Introduction to electrical control function

Including brief introduction to air conditioners of series models and electric

control function.

Brief introduction to electric control function

(1) Automatic running (applicable to fan-coil model)

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

a. Tr>23

C running refrigerating mode Ts=26

b. Tr<23

C running heating mode Ts=23

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. But the automatic conversion between

refrigerating mode and heating mode must be conducted after 15 minutes.

The compressor, outdoor fan and indoor fan will run as per the following

working pattern so as to realize the refrigerating running of

dehumidification:

a.Tr> Ts+2

C, compressor, outdoor fan run continuously, indoor fan runs as

per setting wind speed (State 1);

b.Ts+2

C>Tr>Ts, 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)

c.Tr <Ts, compressor, outdoor fan ceases, indoor fan runs in lower wind

speed after 3 minutes ceases. (State 3)

(3) Dehumidification running

(2) Indoor temperature control

Compressor OFF

Compressor ON

Compressor OFF

Setting temperature

Refrigerating

Heating

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Haier air conditioner Edition: 1.0-061128

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