Haier AC242ACEAA [310/408] Electric control functions

Haier AB242ACERA [310/408] Electric control functions

1. Communication control

1.1 Remote receive function, with remote controller YR-H71.

1.2 Long-distance communication, the long-distance control function is pre-setted.

1.3 Wired controller communication, the wired controller can be used for communication by

dip-switch selection. The display board is not available when use wired controller.

Select one control type between wired and remote control, long-distance control can be used with

wire/remote control.

2. Function description

2.1 The running mode includes AUTO, COOL, DRY, FAN and HEAT; can set the compulsory

cooling function; AUTO/HIGH/LOW 3-speed for indoor motor; can set the TIMER ON,TIMER OFF,

TIMER ON/OFF and SLEEP function; auto-check water level and control the water drainage of

water pump; the swing is controlled by stepping motor; 3-minute protection for compressor;

anti-overload protection, anti-freezed protection, temperature cutoff protection and bad-sensor

protection; communication failure detect function; check indoor ambient temperature and indoor coil

temperature; can be controlled by central controller.

2.2 LED indication: when the unit is switched on by the controller, the POWER LED will be ON,

when being switched off, the POWER LED will be OFF. When the compressor is running, the

compressor LED will be on; when it stops, this LED will be off. If the controller is in TIMER and

SLEEP mode, the TIMER LED will be on; if it is not in TIMER and SLEEP mode, the TIMER LED

will be off.

2.3 Temperature compensation 4ć control: select by the dip switch on indoor PCB.

2.4 There is set temperature in AUTO mode as default.

2.5 Tr stands for room temperature; Ts stands for set temperature; Tg stands for indoor coil

temperature; Tc stands for defrosting temperature; t stands for compensation temperature; T

stands for temperature difference.

2.6 T=Tr-Ts+t (t=0 in cooling mode).

2.7  T=Ts-Tr+t (t=compensation value, with compensation in heating mode; t=0, without

compensation in heating mode).

3. Mode control

3.1 Indoor AUTO FAN control

3.1.1 If the unit enters AUTO FAN for the first time, when T˚2, select high speed; whenTİ0,

select low speed; or it will select med speed; when thermostat is OFF, fan will be low speed. (the

conversion temperature difference is 1 degree).

3.1.2 If the present fan speed is AUTO HIGH, whenT˘2, fan speed will change to AUTO MED.

3.1.3 If the present fan speed is AUTO MED, whenT˘0, fan speed will change to AUTO LOW;

whenT˚3, fan speed will change to AUTO HIGH.

3.1.4 If the present fan speed is AUTO LOW, whenT˚1, fan speed will chenge to AUTO MED.

3.1.5 Fan speed conversion in AUTO FAN mode: the conversion will delay for 3 minutes from HIGH

to LOW, and no delay from LOW to HIGH.

3.1.6 When the fan speed is HIGH/LOW/MED, on the condition that the protection does not act, the

unit will run at the set fan speed; when the protection acts, for the sake of the normal operation, the

fan speed will be forced to conversion; in Dry mode, fan motor will be changed as request.

3.2 AUTO mode control

3.2.1 When entering AUTO for the first time, the unit will select the running mode due to the below

conditions, then perform the selected mode.

3.3 Electric control function For the unit with 0010400911E PCB(AP422ACEAA)

Electric control functions

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Haier AC242ACEAA [310/408] Electric control functions

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