W11578579 Whirlpool Microwave Inverter – Fix Microwave That Won't Heat, Has No Power, or Displays Error Codes

The W11578579 microwave inverter is the power control board that regulates electrical current to the magnetron in Whirlpool microwaves. When this inverter fails, your microwave may not heat at all, display error codes, produce weak or inconsistent heating, or fail to power on completely. This genuine OEM replacement restores full microwave functionality and proper power delivery.

✓ Key Features & Benefits

• OEM quality inverter board engineered for Whirlpool microwaves
• Advanced inverter technology provides consistent power to magnetron
• Direct replacement for failed or malfunctioning inverter boards
• Eliminates no-heat issues and error code displays
• Restores proper power control and cooking performance
• Precision-engineered for reliable, long-lasting operation

✓ Common Symptoms of Inverter Failure

• Microwave runs but produces no heat
• Display shows error codes or fault messages
• Microwave won't power on or start
• Weak or inconsistent heating performance
• Loud humming or buzzing noise during operation
• Microwave shuts off unexpectedly mid-cycle

✓ Installation & Compatibility

This inverter board is designed for specific Whirlpool and Jenn-Air microwave models. Verify your model number compatibility before ordering. Installation requires disconnecting power, removing the outer cabinet, locating the inverter board, disconnecting wire harnesses, and mounting the new inverter. Advanced technical skill and proper safety precautions recommended due to high voltage components.

✓ Why Choose XPart Supply?

• 30+ years serving Canadian appliance repair professionals
• Guaranteed fit support from appliance parts experts
• Fast shipping across Canada
• Phone support available for installation questions