Haier AC242ACERA [312/408] Electric control functions

Haier AD482ANEAA [312/408] Electric control functions

area is defined as Area C.

3.4.2 After the unit is running in DRY mode, the system will change over among Area A, Area B, and

Area C (the conversion temperature difference f1ć)

If the system is in Area A, when T˘1, change to Area B;

If the system is in Area C, when T>1, change to Area B;

If the system is in Area B, when T>3, change to Area A;

WhenT˘ˉ1, change to Area C.

3.5 FAN mode control

The compressor and the outdoor motor will stop running, indoor motor can be set at high/med/low

speed, the fan blade can swing or stay at one position. In this mode, you can set the TIMER and

SLEEP function.

3.6 HEAT mode control

3.6.1 4-way valve control

a. 4-way valve being electrified after compressor has started for 3 seconds when heating for the

first time, then the 4-way valve will be electrified before compressor start;

b. Only in cooling(not heating) mode, 4-way valve and compressor will power off at the same time,

the 4-way valve keeps being powered when shutoff, thermostat OFF and compressor stop .

Note: 4-way valve control is realized by outdoor unit for the unit with outdoor PCB, not concurrent

completely.

3.6.2 In heating mode, for every time the compressor startup (thermostat ON), within 6 minutes, the

4-way valve will not be limited by the temperature sensor, but for the set temperature change,

shutoff signal and the protection, the compressor can stop immediately without 6-minute limitation.

3.6.3 Tı1 compressor running, indoor motor runs at anti-cold air mode;

Tİ-1 compressor stops, indoor motor runs at blowing remaining heat mode;

-1<T<1 compressor retains original state

3.6.4 Overheat protection

Indoor coil temperature Tg>56ć, outdoor motor run in compulsory LOW and resume to normal

HIGH when Tg<54ć. Indoor coil temperature Tg˘40ć, outdoor motor run in compulsory HIGH

40 ć Tg˘56ć.

In heating mode, compressor has started up and indoor motor has run for over 30 seconds, if indoor

coil temperature Tg>60ć, outdoor motor will stop; if Tg<56ć, and outdoor motor has stop for 45

seconds, outdoor motor will run again; if Tg>68ć, the compressor will stop and indoor motor will

run in thermostat OFF. After the compressor stops for 3 minutes and Tg reduces to 48ć, the unit

will resume to heating mode, and the compressor and the outdoor motor will run again.

3.6.5 Temperature cutoff protection

In heating mode (besides the defrosting), the unit will check indoor coil temperature every time

the compressor has run for 5 minutes, when indoor coil temperature Tg˘Tr-5, the unit will stop and

3 minutes later restart up; if the temperature cutoff occurs for 3 times continuously, the unit will stop

and alarm(not check in defrost and within 3 minutes after defrost).

and resume to normal HIGH when Tg>42ć. Outdoor motor run in HIGH(normal state) when

3.6.6 Anti-cold air function in heating mode

After entering heating mode, or last defrosting is over, the compressor will start up, if Tg˘28ć

(HW_D2), indoor motor will stop; if 38ć(HW_D1)!Tgı28ć(HW_D2), indoor motor will run at low

speed; if Tgı38ć(HW_D1) or the compressor has run for over 4 minutes, indoor motor will run at

the set speed; once the motor has started up, it will not stop because of Tg reduction.

3.6.7 Blowing remaining heat function

Electric control functions

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Haier AC242ACERA [312/408] Electric control functions

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