Maytag Refrigerator RSD2000DAE Freezer not defrosting

The Radiant Heater is an OEM replacement part for Whirlpool refrigerators. It is the defrost heater that provides a gentle warmth to prevent freezing and freezing within selected drawers and compartments.  Radiant Glass (Quartz), Length (Approx) - 9-1/4, 500 watts

Causes of a faulty heater can include operational wear from prolonged power on cycles. Exposure to condensation or spills may also impact insulation over time.

Symptoms include:  

• Inadequate or ineffective temperature control in heater zones
• Short cycling or failure to maintain set temperatures  
• Loose connections or damage to heating coils

This OEM part is also compatible with Maytag, KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, and Roper refrigerator models.

This defrost timer controls the automatic defrost cycle in select refrigerators and freezers, switching between cooling and defrost to clear frost on the evaporator. It helps maintain stable temperatures and prevents heavy ice buildup and long run times. What it does:

• Alternates the system between cooling and defrost on a timed schedule
• Sends power to the defrost heater during defrost, then returns power to the compressor and fans
• Failure can cause heavy frost on the evaporator/back freezer wall
• May lead to warmer temperatures, constant running, short cycling, or no-cool if stuck in defrost

• 1 defrost timer

• Disconnect power before servicing
• Access location varies by model
• Note wire positions and transfer them one at a time to the new timer
• Mount securely in the same orientation as the original and verify normal cycling after power is restored