Kitchenaid Refrigerator SC8640EE Fridge too cold

The Whirlpool Defrost Timer is an OEM replacement part for Whirlpool refrigerators. The defrost timer regulates the automatic defrost cycle, which prevents ice buildup on the evaporator coils in the freezer compartment by sending a signal to the defrost heater to turn on and melt any ice buildup on the coils. 

Causes of a bad defrost timer can include mechanical wear over time, electrical failures, or internal component damage. Prolonged usage and voltage spikes can also affect the timer's functionality.

Symptoms of a bad Defrost Timer include:

• Excessive frost buildup in the freezer compartment
• The refrigerator or freezer not maintaining the set temperatures
• Unusual noises coming from the appliance 
• The appliance running continuously without cycling off

This OEM Whirlpool part can also be used on Maytag, KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper, and Kenmore/Sears brand appliances.

The air diffuser is the damper assembly that meters cold air from the freezer into the fresh food compartment. Replacing a sticking or broken diffuser restores proper airflow and helps keep refrigerator temperatures balanced and consistent.

• Regulates and directs airflow from the freezer to the refrigerator compartment
• Opens and closes to balance temperatures between sections
• Helps prevent warm spots or freezing near vents in the fresh food area
• Typical symptoms: refrigerator too warm, items freezing near vents, continuous or no airflow through the diffuser, or frost buildup around the diffuser opening

• Disconnect power before servicing
• Access from the fresh food section; remove shelves and the diffuser cover/grille to reach the assembly
• Transfer any reusable mounting hardware or seals from the original part
• Restore power and allow up to 24 hours for temperatures to stabilize; verify airflow through the diffuser