Refrigerator cycles on and off frequently, with noticeable temperature swings.

Safety first: Unplug the refrigerator before cleaning coils or accessing controls.

Steps:

• Clean condenser coils: Use a brush and vacuum to clean dust from the condenser coils at the back or underneath. Overheating can cause frequent cycling.
• Check sensor mounting: Ensure the refrigerator and freezer NTC sensors are properly clipped to their mounting points and not hanging loose.
• Stabilize load: Avoid placing hot food directly inside and keep the unit reasonably loaded to stabilize temperatures.
• Control board: If cycling is accompanied by clicking from the control board and erratic behavior, the main control PCB may be failing and require replacement.