Haier RF-8888-193 3Refrigerating system is clogged with dirt, 4Clogged filter Analysis of Trouble

-Water accumulates and gradually clogs the narrow part of the capillary,

-Frost to melt at the evaporator, there is no sound of gas flowing,

-The gas suction pressure becomes a vacuum.

Note that these phenomena will appear intermittently. In order to know whether the system is clogged with ice, heat the parts that are suspected with hot water. If the sound of gas flowing is heard and the gas suction pressure rises, the trouble is that the system is clogged by ice.

Remedy

If there is too much moisture in the refrigerating system, release the refrigerant, purge the tubing with nitrogen, and then refill the system with the filtered refrigerant. Another method is to connect a filter with moisture absorbers, such as silica gel or anhydrous calcium chloride, to the refrigerating system. Next, replace the filter, evacuate it again, and fill the system with refrigerant.

3)Refrigerating system is clogged with dirt

Analysis of Trouble

Coarse-grained dirt and refrigerant oil in the system tend to settle and clog the capillary inlet. Flow of refrigerant stops when the filter screen is completely clogged by dirt. This condition has the same symptoms as when the refrigerating system is clogged by ice.

However, when you heat the clogged area with a hot towel, there is no reaction. After rejecting the possibility of ice clogging, it can be concluded that the clogging is due to dirt.

Remedy

Dismantle the system. Remove the dry filter and purge the tubing with nitrogen. Next, install a new filter. Then evacuate it and fill with refrigerant.

4)Clogged filter

Analysis of Trouble

The complete clogging of the filter rarely occurs. Oftentimes, there is an accumulation of paste-like matter formed from dust on the filter. Tapping the filter may remove part of the paste-like matter. When the filter is clogged, it will be cooler than normal.

Remedy

The same as described for the capillary clogged with dirt.

•Troubles of Compressor

1) Broken gas suction and discharge valve blocks

Analysis of Trouble

The compressor works by opening and closing the gas suction valve and discharge valve to suck and discharge the refrigerant. If the valve block is broken, the refrigerant cannot be discharged. This prevents refrigeration.

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