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2-4. Cooling
Problems | Causes |
| Checks | Measures | Remarks |
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High | Refrigerant leak. | Check sequence | Weld the leaking part, recharge the | Drier must be replaced. | |
temperature |
| 1. | Check the welded parts of the | refrigerant. |
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in the freezer |
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| drier inlet and outlet and drier |
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compartment. |
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| auxiliary in the compressor |
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| compartment (high pressure side). |
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| 2. | Check the end of compressor |
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| sealing pipe (low pressure side). |
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| 3. | Check silver soldered parts. |
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| (Cu + Fe / Fe + Fe). |
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| 4. | Check bending area of wire |
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| condenser pipe in compressor |
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| compartment (cracks can |
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| happen during bending). |
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| 5. | Check other parts (compressor |
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| compartment and evaporators in |
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| freezer compartment). |
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| Shortage of refrigerant. | Check frost formation on the surface | - Find out the leaking area, repair, | Drier must be replaced. | |
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| of evaporator in the freezer | evacuate, and recharge the |
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| compartment. | refrigerant. |
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| - If the frost forms evenly on the | - No leaking, remove the remaining |
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| surface, it is OK. | refrigerant, and recharge new |
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| - If it does not, it is not good. | refrigerant. |
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TROUBLE DIAGNOSIS
