Maintenance Service and Trouble Shooting

Hums from a fully enclosed aggregate unit is the sound caused by overload indicating that the motor cannot be started normally ,meanwhile ,a clattering sound can be heard from inside the start relay ,which is produced because the start contacts cannot be released normally .A whistling sound is caused by the high pressure gas flowing out of the crack of the pressure tube inside the compressor ,and clucks are the sound of striking after the suspended spring inside the compressor has broken .

During the normal operation of compressor ,a slight and uniform hum sound due to undulation of electric current can be heard generally ,this is a normal phenomenon .However ,if it sounds like “tong ,tong …”,i.e., an impact sound inside the compressor ,this means that a large quantity of wet vapour of refrigerant or refrigerating oil has come into the compressor cylinder ;if it sounds like “dang ,dang…”, a striking sound of metal parts inside the compressor ,this means that some moving parts have loosened (note to differentiate this sound from those formed during starting or stopping the compressor).

b)Listen to the sound caused by the flowing of gas in the evaporator Open the refrigerator door while the compressor is in operation ,incline

your ear and listen attentively the gas flow sound inside the evaporator .If it sounds like gentle whistling accompanied by a sound similar to water flowing ,this is the sound produced by the normal circulation of refrigerant within the evaporator .In case only the gas flowing sound can be heard and there is no water flowing sound ,this indicates that the refrigerant has already percolated .If neither the flowing sound nor the gas sounds from the evaporator can be heard ,this means that the filter or capillary has been clogged .

3)Touch and Feel

a)Feel the compressor when running ,its temperature should be

generally less than 90℃ in the normal state (it may exceed 90℃ in case of running for a longer period of time ).

b)After the compressor has operated normally for 5~10 minutes , ouch and feel the condenser ,the temperature of its upper part should be higher than that of its lower part (or its right part is hotter than its left part ,depending on the type of condenser coil ),this indicates that the refrigerant is circulating . If the condenser is not hot ,this means the leakage of refrigerant .In case the condenser radiates heat for only several minutes and then cools down ,this means that the filter and capillary have been clogged .As for the forced air cooling condenser ,hot air will be blown

out of it ;this means that the system is out of order .

c)Feel the filter’s temperature .During the normal operation of refrigerating system ,the temperature on the filter’s surface should be a little higher than the ambient temperature ;if you touch it with your hand ,you will have a sense of slight heat .In case dew condensation appears due to the fact that its temperature is obviously lower than the

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Haier HRF- 329AA, HRF- 349AA, HRF- 369AA service manual 3Touch and Feel
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HRF- 369AA, HRF- 329AA, HRF- 349AA specifications

The Haier HRF-349AA, HRF-329AA, and HRF-369AA are modern refrigerators designed to enhance the kitchen experience with their innovative features and technologies. Each model offers a blend of functionality, energy efficiency, and stylish design, making them appealing choices for homeowners.

The Haier HRF-349AA is known for its spacious interior and superior cooling performance. With a total capacity of 349 liters, it provides ample space for food storage. One of its standout features is the No Frost technology, which prevents ice buildup and eliminates the need for manual defrosting. This ensures that both the refrigerator and freezer compartments maintain optimal temperatures, preserving the freshness of food items. The model is also equipped with an energy-efficient compressor, which optimizes power consumption while maintaining efficient cooling.

Next is the Haier HRF-329AA, a slightly smaller model that does not compromise on features. With a capacity of 329 liters, it is ideal for families or individuals looking for a reliable cooling solution. This refrigerator incorporates Multi Air Flow technology, which ensures that cold air circulates evenly throughout the compartments. This feature helps to keep food fresh for longer periods. Additionally, the HRF-329AA features adjustable shelves, allowing users to customize storage space according to their needs.

The Haier HRF-369AA takes things a step further, offering a total capacity of 369 liters, making it one of the larger options in the lineup. This model includes smart cooling technology, which monitors temperature and humidity levels, automatically adjusting them to maintain an optimal environment for food storage. One of its key characteristics is the Eco-friendly Refrigerant, which not only contributes to a reduced carbon footprint but also ensures effective cooling performance. The HRF-369AA also comes with a stylish exterior, available in various finishes to complement any kitchen decor.

All three models reflect Haier's commitment to quality and innovation. Their design incorporates features such as LED lighting for better visibility and easy access to food items, as well as sleek finishes that enhance the aesthetic appeal of any kitchen. With energy-efficient operations and advanced cooling technologies, the Haier HRF series delivers performance and reliability that meets the demands of modern households.
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