Haier AE142FCBKA [76/126] Commercial air conditione

Commercial Air Conditioner Model: AU242FHBIA,

AU482FIBIA, AU48NFIBJA

8.3 Temperature compensation adjustment (only for indoor unit with new PCB-AB**FCBIA):

For infrared control type unit, the temperature compensation can be adjusted. But for wired control

type unit, there is no temperature compensation.

Set the EEPROM by SWING (or SLEEP) button. For example:

Infrared control—in heating mode, press “ON/OFF” button to switch on the unit. Take the 24 degree

set temperature as the base point, press SWING (SLEEP) within 5 seconds, it will sound 2 times,

the unit will enter the heating temperature compensation mode, at this time, if you set the

temperature to 25 degree and switch off, the temperature compensation will be +1 degree; if you

set the temperature to 26 degree and switch off, the temperature compensation will be +2 degree,

and so on, the max. compensation can be +6 degree ( 30 degree); if you want to cancel the

compensation, adjust the temperature back to 24 degree.

Infrared control—in cooling mode, press “ON/OFF” button to switch on the unit. Take the 24 degree

set temperature as the base point, press SWING (SLEEP) within 5 seconds, the unit will enter the

cooling temperature compensation mode, at this time, if you set the temperature to 23 degree and

switch off, the temperature compensation will be -1 degree; if you set the temperature to 22 degree

and switch off, the temperature compensation will be -2 degree, and so on, the max. compensation

can be -8 degree ( 16 degree); if you want to cancel the compensation, adjust the temperature back

to 24 degree.

Read the temperature compensation value:

Infrared control type—change to cooling mode, the set temperature is 30 degree, in high speed.

Press SWING (SLEEP) 7 times within 5 seconds, the running LED will flash as the current temp.

compensation value.

Infrared control type—change to heating mode, the set temperature is 16 degree, in high speed.

Press SWING (SLEEP) 7 times within 5 seconds, the running LED will flash as the current temp.

compensation value.

8.4 Unit debugging:

1. Confirm indoor unit quantity

After the unit is electrified, you can check the indoor unit quantity by the outdoor dip switch or the

testing board. The display quantity must be in accordance with the actual quantity. If not, please

check if there is repeated unit No. or if the dip switch is broken, and if the communication wire is

connected correctly.

2. Confirm indoor EEV

FAQ:

2.1 The EEV communication wire is not in accordance with the indoor unit. If all the indoors are

running, the operation will be normal; when the only one indoor unit is running and it can not cool,

while the EEV of the unit not running opens.

2.2 The live wire and the neutral wire of the EEV power cable is not in accordance with those of

indoor unit power cable, E7 failure occurs.

2.3 The coil temperature sensor is not in original place or not fixed well, which cause EEV not work

properly. The efficiency will be bad or outdoor unit will be liquid return.

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