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    Refrigerator defrost problem

    Refrigerator defrost problem


    Defrosting is very important to maintain the cooling inside the refrigerator. If the defrosting fails, ice will build up on the evaporator coil due to which the food section and freezer will not stay cold enough.

    Duration 1 - 2 days
    Pricing Depends on scope of work
    Turnaround Time 2 hours
    • Diagnosis
    • Cost of parts repalced

    Recent Reviews for Refrigerator defrost problem
    Rated 4 based on 5 reviews

    Pro Devendra Singh

    Pro Ajay Kumar AC/Electricial Services

    More about Refrigerator defrost problem

    What cause defrost problem in a refrigerator?

    During the refrigeration cycle of a refrigerator, moisture in the air freezes and sticks to the evaporator coils as frost The refrigerator has to go through a defrost cycle to melt this ice that continues to build up on the evaporator coils from the moisture in the air. If the refrigerator has a defrost problem the frost collected on the coils will not melt. Sometime the frost builds up to the point that it blocks airflow and the refrigerator stops cooling.

    Refrigerator defrost problem is difficult to fix and most of the time require a refrigerator repair expert to identify the root of the problem.

    Reasons behind refrigerator defrost problem are:

    Defective defrost system: In any frost free fridge there is a defrost system which controls the cooling and defrost cycle. The components of the defrost system are: a defrost timer and a defrost heater:

    • A defrost timer switches the refrigerator between the cooling and defrost mode. If it goes bad and stops at cooling mode, it causes excessive frost to build up on the evaporator coils which reduces the air flow. Or when it stops at the defrost mode it melts all the frost and does not go back to the cooling cycle. A broken defrost times prevents the refrigerator from cooling efficiently.
    • A defrost heater melts the frost developed over the evaporator coil. But if it goes bad frost does not melt and excessive frost accumulates on coils reducing the cool air flow inside the refrigerator.

    So when either of the 2 become faulty, the fridge does not understand when to cool and when to defrost.

    Defective thermostat: If the refrigerator does not defrost, the defrost thermostat might be defective. In a defrost system, the defrost heater turns on several times in a day to melt away the frost developed on the evaporator coil. This defrost heater is connected to a defrost thermostat. The defrost thermostat senses the temperature of cooling coils. When the cooling coils become cold enough, thermostat sends signal to defrost heater to turn on. If the thermostat is defective it may not be able to sense the temperature of coils and then won't turn on the defrost heater. If the defrost heater doesn't turn on, the refrigerator will never start the defrost cycle and will eventually stop cooling

    The above are some common reasons behind refrigerator not defrosting problem but there can be other reasons as well.

    What is included in the service?

    The PRO visits client’s site and troubleshoots the defrost problem of refrigerator. The PRO looks for all possible reasons behind the issue. After the actual problem is identified, PRO describes the problem to the customer and suggests a possible repair or replacement. On customer consent, the PRO repairs the refrigerator.