20162904 Furnace Primary Limit Switch (150°F to 110°F) - For Goodman Furnace

20162904 Furnace Primary Limit Switch

Key Features

• Temperature Range: Opens at 150°F (65.5°C) and closes at 110°F (43.3°C).
• Function: Monitors plenum temperature and automatically shuts down the furnace if it exceeds the high limit, preventing overheating.
• Construction: Made from aluminum alloy and thermoplastic materials for durability and reliable conductivity.
• Type: Primary high-limit temperature control switch.

Replaces / Cross-Reference Part Numbers

• 20162904
• 20162904S
• L40-524
• L40524

Compatibility & Fitment

• Designed for use in various Goodman brand furnaces.
• Verify the part number in your appliance's service manual to ensure proper fitment.

When to Replace

• The furnace cycles on and off frequently without reaching the set temperature.
• The indoor blower motor runs continuously.
• The furnace fails to ignite or produce heat.

Installation Tips

• Disconnect all electrical power to the furnace before servicing.
• Confirm the temperature ratings of the replacement switch match the original part.
• Note the position of the electrical connections before removing the old switch.
• Installation by a qualified service technician is recommended.