| Problems | Causes | Checks | Measures | Remarks |
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| Sound "Burping" | It happens when refrigerant expands | - Check the sound of refrigerant at the | - Check the restrainer attached on the |
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| (almost the same | at the end of capillary tube. | initial installation. | evaporator and capillary tube weld |
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| as animals crying |
| - Check the sound when the refrigerator | joints and attach another restrainer. |
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| sound). |
| starts operation after forced defrosting. | - If it is continuous and servere, insert |
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| - Check the restrainer attachment | capillary tube again (depth:15±3mm) |
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| conditions on the evaporator and | - Fasten the capillary tube to suction |
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| capillary tube weld joints. | pipes or detach in the compressor |
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| compartment. |
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| - Explain the principles of freezing |
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| cycles. |
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| Water boiling or | It happens when refrigerant passes | - Check the sound when compressor is | - Explain the principles of freezing cycles |
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| flowing sound. | orifice in accumulator internal pipes by | turned on. | and refrigerant flowing phenomenon by |
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| the pressure difference between | - Check the sound when compressor is | internal pressure difference. |
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65 - |
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| condenser and evaporator. | turned off. | - If sound is servere, wrap the |
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| accumulator with foam and restrainer. |
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| Sound of whistle | When door closes, the internal pressure | - Check the sound by opening and | - Broaden the cap of discharge hose for |
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| when door | of the refrigerator decreases sharply | closing the refrigerator or freezer doors. | defrosting in the compressor |
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| closes. | below atomosphere and sucks air into |
| compartment. |
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| the refrigerator, making the whistle |
| - Seal the gap with sealant between out |
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| sound. |
| and inner cases of hinge in door. |
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TROUBLE DIAGNOSIS
