REF196GSZ Not Defrosting – How to Resolve the Issue
If your REF196GSZ refrigerator is not defrosting properly, this could lead to excessive ice buildup inside the freezer, impacting its cooling efficiency. Let's break down the possible causes, how this issue arises, and step-by-step instructions on how to resolve it.
Possible Causes of the Issue:
Faulty Defrost Timer: The defrost timer controls the defrost cycle of the refrigerator. If the timer malfunctions, it may not initiate the defrost cycle, causing ice to build up.
Defrost Heater Problem: The defrost heater is responsible for melting the ice that accumulates on the evaporator Coils . If this heater is defective, the ice will not melt, leading to a buildup.
Defrost Thermostat Failure: The defrost thermostat monitors the temperature of the evaporator coils. If the thermostat is broken, the heater may not activate when needed, causing frost accumulation.
Clogged or Blocked Drain: A blocked defrost drain can prevent the water from draining properly during the defrost cycle, leading to water accumulation and ice buildup.
Faulty Evaporator Fan Motor: The evaporator fan helps circulate cool air throughout the freezer and fridge. If this fan is not working, the cold air may not reach the freezer or fridge, leading to poor defrosting.
Step-by-Step Guide to Resolve the Issue:
Step 1: Check the Defrost Timer Location: The defrost timer is typically located at the back of the fridge or in the control panel area. How to Test: Manually advance the timer and listen for the clicking sound. If you don't hear it or the refrigerator doesn’t change to defrost mode, the timer might be faulty and needs replacement. Step 2: Inspect the Defrost Heater Location: The defrost heater is generally located around the evaporator coils in the freezer. How to Test: Unplug the fridge, locate the heater, and visually check if there is any damage. If you have a multimeter, test the heater for continuity. If there's no continuity, the heater is faulty and should be replaced. Step 3: Examine the Defrost Thermostat Location: This is typically near the evaporator coils, attached to the coil or the heater. How to Test: Test the thermostat with a multimeter when it is cold. If it doesn’t show continuity, the thermostat is defective and will need to be replaced. Step 4: Clear the Defrost Drain How to Inspect: Find the defrost drain, usually at the bottom of the freezer. Look for any blockages like ice or debris. If the drain is clogged, use a pipe cleaner or warm water to clear it. Step 5: Check the Evaporator Fan Location: The evaporator fan is typically inside the freezer near the evaporator coils. How to Test: Listen for the fan’s sound when the refrigerator is running. If the fan isn’t operating, it may be stuck, or the motor could be malfunctioning. You can test the motor using a multimeter. If it’s faulty, the motor will need to be replaced. Step 6: Additional Steps Unplug the Refrigerator: Always unplug the fridge before working on any electrical components for safety. Clean the Coils: Dirty condenser coils can impact the defrost cycle. Clean the coils regularly to ensure proper operation.When to Call a Professional:
If you have checked and replaced the faulty parts mentioned above, but the refrigerator still doesn’t defrost, it may indicate a more complex electrical issue or a deeper mechanical problem. In such cases, it is advisable to call a certified technician to diagnose and repair the issue.
By following these steps, you should be able to identify and fix the defrosting issue with your REF196GSZ refrigerator. If you're unsure about handling electrical components, it’s always safest to consult a professional repair technician.
