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2-6. Icing
TROUBLE DIAGNOSIS
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Problems Causes Checks Measures Remarks
Icing in the 1) Bad circulation of cool air. - Check the food is stored properly - Be acquainted with how to use. - Check the defrost
refrigerator - Clogged intake port in the (check discharge and intake port - Sealing on connecting parts. related parts if problem
compartment. refrigerator compartment. are clogged). - Check the damper and replace is caused by faulty
- Damper icing. - Sealing is not good. - Check icing on the surface of it if it has defects. defrosting.
- Pipe icing. - Too much food is stored and clogs baffle and cool air path (pipe) after - Check defrost. (After forced
- Discharging the discharge port. dissembling the container box. defrosting, check ice in the
pipe icing. - Bad defrosting. - Check icing at intake ports of evaporator and pipes.)
freezer and refrigerator
compartment.
2) Faulty door or refrigerator - Check gasket attached conditions. - Correct the gasket attachment - Replacement should
compartment. - Check door assembly conditions. conditions and replace it. be done when it
- Faulty gasket. - Door assembly and replacement. cannot be repaired.
- Faulty assembly.
3) Overcooling in the refrigerator - Check refrigerator compartment - Replace faulty parts.
compartment. is overcooled (when button
- Faulty damper in the refrigerator pressed on "weak").
compartment. - Check parts are faulty.
- Faulty MICOM (faulty sensor)
4) Bad defrosting - Check frost on the evaporator - Check parts related to defrosting. - Moisture cannot frost
- Heater wire is cut. after dissembling shroud and fan - Check defrosting. (Check ice on the on the evaporator but
- Defective defrost sensor. grille. evaporator and pipe.) can be sucked into the
- Defrosing cycle. - Check ice on intake port of freezer refrigerator, being
and refrigerator compartment. condensed and iced,
interferes with cool air
circulation, and
suppresses sublimation.
5) Customers are not familiar with - Check food interferes with door - Be acquainted with how to use.
this machine. closing.
- Door opens. - Check ice on the ceilings.
- High temperature, high moisture,
and high load.