Do you need to defrost your refrigerator at a regular interval of time then don’t worry it is because of this simple issue?
The most frequent problem that has been seen in the machines of many people is evenly frosted evaporator coil. In many fridges, frost is seen on the panel that spread across a cooling coil.
Why the above mention phenomenon so common? Well, it is common because generally during the whole cycle of the refrigerator, environment moisture freezes and clings to the coil as frost. So, defrosting is done to get rid of this unnecessary ice building on the coil.
In case any refrigerator is having a defrosting issue then remember that the frost assembled on the evaporating coil will hardly melt and this will lead to blocking of airflow and hence this why many people complain that their refrigerator has stopped cooling as good as it did initially.
Another major reason behind the defrost issue is a faulty component of the defrost system.
The main components that control a defrost process is-: A defrost timer and a defrost heater. Always remember that it is the timer that decides when defrosting is needed and accordingly switches from cooling to heating.
In case the timer goes wrong then a massive frost can be built on the coil that is the main element that controls the air flow.
For example, if the timer stops at a heat mode then defrost done but it never returns to cooling mode and similarly if the timer stops at cooling mode then frost pile up and stops cooling eventually.
Apart from the timer, it can also be the fault of the defrost thermostat. In a day many times the defrost heater is being switched on and off to melt the frost on the coil easily. And the defrost heater is being connected to the defrost thermostat that understands the coil temperature. As soon as it understands that the coil has become cold enough, it immediately sends the signal that the defrost heater has to be now turned on.
So, if there is an issue with the thermostat then it won’t understand the signal and hence defrost process won’t happen.