Maintenance Service and Trouble Shooting

5 Normal Phenomena—Not Troubles for Refrigerators

In a domestic refrigerator, there is not only a complicated electric control system, but also a refrigerating system that is difficult to discern whether it is in a good working condition. Both the systems are related and affect each other. If a certain part of a refrigerator works abnormally .Its refrigerating efficiency will decrease ,operation properties will become unstable ,or even it cannot be used normally for those serious cases.

Refrigerators are generally of larger volume ,once troubles appear ,to send them to a service department is really a tough thing ,if such is the case ,the user will always be in suspense ,sometimes ,normal phenomena will be erroneously regarded as troubles .Therefore ,before we deal with the topics of frequently occurring troubles of refrigerators and their remedies ,we should firstly give a brief account of some normal phenomena which are not troubles .In case any one of such phenomena occurs ,there is no need to worry about it ,and the user can use it at total ease .

1).When the compressor of a refrigerator has just stopped running ,a rumbling sound can be heard from inside its evaporator .This is a sound caused by the flowing of refrigerant in the evaporator tubing .Because the pressure difference is still greater after the compressor has just stopped running ,the refrigerant will flow for a certain time , therefore ,this sound is a normal phenomenon.

2).A click sound can often be heard from the refrigerator .This is a normal sound produced by the pull-in or release of the armature of a current deadweight start relay when starting the compressor .The compressor motor will produce a slight and uniform sound while it is running .This sound is not easy to be heard in the daytime ,but of course it can be heard distinctly at night.

3).The compressor consists of an electric motor and a compressing apparatus .During its normal operation ,the motor’s stator core and windings will rise to a temperature in the range of 100℃~110℃ ,and the temperature of the piston and cylinder of the compressing mechanism can also reach as above 100℃ due to the heat produced when compressing refrigerant .Most of the heat radiates to the air through the compressor casing ,therefore ,its casing is generally at a temperature between 85℃~90

℃,it is very hot ,particularly in summer when the ambient temperature is higher .All these are normal phenomena .

4).For the direct cooling refrigerator ,a kind of irregular crack sound can be often heard when the compressor is running for a certain period of time or has just stopped its running .This sound is caused by the stress relief due to expansion and contraction when temperature changes ,and will not

affect the normal application of refrigerator .

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Haier HRF- 349AA, HRF- 329AA, HRF- 369AA service manual Normal Phenomena-Not Troubles for Refrigerators
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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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