Electrical Wiring

The unit has temperature compensation function.

(Only used for remote controller)

You can use [swing] button of the remote controller to set or cancel temperature compensation function.

(1)About temperature compensation function setting * The setting method for heating mode:

press [ON/OFF] button of the remote controller to start the indoor unit, setting temperature: 24¡ , press [swing] button 7 times in 5 seconds, the buzzer will ring twice, and enter heating temp. compensation mode.

set compensation temp. , if the set temp.is 25¡ , the compensation temp. is +1¡ , you can set it in range of 0¡ to +6¡ *The setting method for cooling mode:

press [ON/OFF] button of the remote controller to start the indoor unit, setting temperature:24¡ : press [swing] button 7 times in 5 seconds, the buzzer will ring twice, and enter cooling temp. compensation mode.

(2) Temperature compensation function checking

*In cooling mode, setting temp.: 30 degree, High fan speed, press [swing] button 7 times in 5 seconds, The Running lamp will flash, the times of flash is same with cooling compensation setting number

*In heating mode, setting temp. :16 degree, high fan speed, press [swing] 7 times in 5 seconds, the running lamp will flash, the flashing times is same with heating compensation setting number

Concerning MRV Auto Restart function for H-MRV models

Haier Auto Restart function when the unit power drops down suddenly, the unit microprocessor will store the previous working condition and when the power is on again, the unit will run as this memory.

Auto Restart function is designed basically on the MRV whole system, but it is suitable for each indoor unit individually. If some of indoor units power cut down, but the outdoor unit and the other indoor units still work, maybe problems will

happen such as freezing at cooling mode and overload protection at heating mode on those indoor units without power. Reason

When one or some indoor units power drops down and the other indoor units are still work, the indoor units without the power, will keep the previous working condition before the power is off.

And expansion valve keeps open at a kind of opening rate condition as the previous requirement,so there is refrigerant flowing in the exchanger, but the indoor fan stops working. If the units work at cooling mode, the indoor units without the power will maybe make freezing. If the unit works at heating mode, maybe the outdoor unit compressor will stop because of the pressure or temperature protection. This is our design basically on Auto Restart function currently.

Haier, Herewith, solemnly informs our customers, installers, distributors, etc. when making installation, please make sure when the power is shut down whether artificially or accidentally, the whole system including outdoor unit and all the indoor units must be off. If you do not make the installation as our indication, Haier will not be responsible for any problem resulting from this.

Pay special care to the following and check after installation

Item to the checked

Unproper installation may cause

Check

 

Unit might fall down, make vibration or noise.

 

 

 

 

Is gas leakage check performed?

This may lead to gas shortage.

 

 

 

 

Is unit properly insulated?

Dew or water drop may occur.

 

 

 

 

Is water drainage smooth?

Dew or water drop may occur.

 

 

 

 

Is power voltage meet that stipulated on the nameplate?

Problem may occur or parts got burned.

 

 

 

 

Is wiring and piping correctly arranged?

Problem may occur or parts got burned.

 

 

 

 

Is unit safely grounded?

There might be a danger of electric shock.

 

 

 

 

Is wire size correct?

Problem may occur or parts got burned.

 

 

 

 

Are there any obstacles on air inlet and outlet grill of

This may cause poor cooling.

 

indoor and outdoor unit?

 

 

 

 

 

Is record made for piping length and refrigerant

It is hard to control refrigerant charging

 

charging amount?

amount.

 

 

 

 

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Haier AB424FCAHA, AB244FCAHA, AB184FCAHA, AB484FCAHA, AB124FAAHA, AB094FAAHA Unit has temperature compensation function

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