OEM Goodman 150F Primary Limit Switch for AMEC800603BXAA — 20162903

Goodman / Amana 20162903 Primary Limit Switch (150°F)

The 20162903 is a genuine OEM primary high-limit switch rated at a 150°F cutout for the Amana/Goodman AMEC800603BXAA gas furnace. This snap-disc safety control monitors heat-exchanger and plenum temperature and shuts off the burners if the furnace overheats — protecting against restricted airflow, dirty filters, or blower failure. A failed limit switch is a common cause of short cycling, no-heat calls, and lockouts.

Specifications

• Cutout temperature: 150°F (opens on temperature rise)
• Type: Automatic-reset snap-disc high limit
• Function: Primary over-temperature safety control
• OEM part number: 20162903
• Primary fit: Amana/Goodman AMEC800603BXAA furnace

OEM vs. Generic

The OEM 20162903 is calibrated to the exact factory trip point and mounting footprint, ensuring correct safety response — critical for a life-safety component. A generic replacement may match the temperature rating and terminals at lower cost, but verify the cutout temperature and disc diameter carefully; mismatched limits can nuisance-trip or fail to protect the unit.

Installation Difficulty: Easy to Moderate

Power down the furnace, disconnect the two spade terminals, remove the mounting screws, and install the new switch in the same orientation. A DIY-capable homeowner with basic tools can handle it, though confirming proper operation is best left to a technician. Match the 150°F rating and part number to your rating plate before ordering.