OEM Goodman 150F Primary Limit Switch for AMVC80603BNBC — 20162903

Goodman 20162903 Primary Limit Switch (150°F)

The Goodman 20162903 is a genuine OEM primary high-limit switch with a 150°F trip rating for the AMVC80603BNBC and compatible Goodman/Amana gas furnaces. Mounted on the heat-exchanger or blower deck, the primary limit monitors supply-air temperature and opens the circuit if the furnace overheats — typically due to restricted airflow, a dirty filter, or a failed blower. This protects the heat exchanger from thermal damage and prevents unsafe operating temperatures.

When a primary limit fails open or drifts out of calibration, the furnace may short-cycle, blow cool air, or refuse to fire. Replacing it with the exact factory-rated switch restores correct high-temperature protection.

Specifications

• Part type: Primary high-limit safety switch
• Trip temperature: 150°F
• OEM Part Number: 20162903
• Brand: Goodman / Amana
• Primary fit: AMVC80603BNBC furnace
• Function: Opens on over-temp to protect the heat exchanger

OEM vs. Generic

Limit switches must match both the trip temperature and mounting footprint exactly. The genuine OEM Goodman 20162903 is calibrated to the AMVC series' 150°F specification. A generic switch with a different trip point can nuisance-trip on normal cycles or fail to protect against a real overheat. For a safety-critical part, choose OEM.

Install Difficulty: Easy to Moderate

With power off, note the wiring, disconnect the terminals, remove the mounting screws, and install the new 20162903 in the identical location and orientation. Reconnect and test a full heat cycle. Typical replacement is 15–25 minutes. Never bypass or jumper a limit switch to keep the furnace running.