Customer Questions and Answers for Heater Assembly (Base) by Whirlpool

This base heater assembly restores the oven's lower heating function in select convection microwaves. It delivers bottom radiant heat for baking and crisping so the unit can preheat properly and brown foods evenly.

• Supplies bottom heat during convection, bake, or crisp cycles
• Works with the control and temperature sensor to reach and maintain set temperature
• Common symptoms of a failed heater may include no heat in convection mode, very long preheat, or poor browning/crisping
• Visible damage to the element or tripping a circuit breaker may also indicate a shorted heater

• Disconnect power before servicing. Microwaves contain high-voltage components that can retain a charge even when unplugged
• Allow the unit to cool completely; access typically requires removing the outer cover or lowering an over-the-range unit
• Note wire locations and routing before removal; transfer any brackets, shields, or screws from the original assembly
• Route wires exactly as original and avoid pinching; confirm clearances before reassembly and test a convection preheat