Designed to monitor critical heater compartment temperatures, the switch opens when unsafe operating temperatures are reached, helping protect heating elements, wiring, sequencers, and the furnace cabinet from thermal damage. The factory fork sensor design ensures proper placement within the heater assembly for accurate temperature sensing and safe furnace operation.

This OEM replacement restores original safety protection when the existing limit switch fails, weakens, or opens prematurely.

 Cross‑Reference (Technician Binder Card Format)

Direct OEM

• S1‑025‑22273‑001 — York / Coleman Combination Limit Switch
• 025‑22273‑001 — Source 1 OEM Number

Compatible Brands

• Coleman
• York
• Luxaire
• Fraser‑Johnston
• Evcon

Specifications

• Primary Limit: L150°F
• Secondary Limit: L250°F
• Configuration: Dual Combination Limit
• Style: Fork Sensor
• Reset Type: Automatic Reset
• Application: Electric Furnace Heater Package Protection

Related York/Coleman Limit Switches

(Verify temperature ratings before substitution)

• S1‑025‑27737‑000
• S1‑025‑35380‑000
• S1‑025‑31813‑000
• S1‑025‑29041‑007
• S1‑025‑41236‑000 heater package assemblies using combination limits

 Technician Notes

• Designed for electric furnace heater compartments.
• Provides two independent temperature safety levels.
• Fork sensor must be positioned exactly as factory installed.
• Common replacement when:
  • Furnace heat strips do not energize
  • Limit switch tests open
  • Heating elements cycle improperly
  • Furnace experiences nuisance limit trips
• Always inspect:
  • Heating elements
  • Sequencers
  • Blower motor operation
  • Airflow restrictions
  • Wiring connections

Repeated limit failures usually indicate an airflow or heat‑strip issue rather than a defective switch alone.