37022 36176 Limit Switch for Atwood RV Furnace Heater Hydro Flame 8500 Series 2P

Limit Switch 37022 36176 for Atwood RV Furnace Heater Hydro Flame 8500 Series

This 37022 36176 limit switch is a replacement safety control for Atwood RV furnace heaters in the Hydro Flame 8500 Series, cycling the burner off when temperatures run high. It cross-references OEM numbers 37022 and 36176 and installs in place of the original limit switch on Hydro Flame 8500 Series units.

Overview

This limit switch fits Atwood RV furnace heaters in the Hydro Flame 8500 Series and acts as the high-temperature safety shutoff for the burner circuit. It opens the circuit when the heat exchanger reaches its set point, then closes again as the unit cools, keeping the furnace cycling safely. It is built for RV owners and technicians replacing a failed or worn limit switch on an Atwood Hydro Flame 8500 Series furnace.

Built For Performance

• Direct replacement for OEM limit switch numbers 37022 and 36176
• Opens the burner circuit at the design temperature to prevent overheating
• Resets automatically as the furnace cools so normal cycling continues
• Two-switch configuration matches the Hydro Flame 8500 Series layout
• Simple two-wire hookup on the furnace control circuit

Fits These Machines

• for Atwood Hydro Flame 8500 Series RV furnaces
• for Atwood RV furnace heaters using limit switch 37022
• for Atwood RV furnace heaters using limit switch 36176

On-The-Job Use

• Restoring heat in an RV after a limit switch fails open
• Preventive replacement during furnace service and tune-ups
• Diagnosing short-cycling or no-heat furnace complaints
• Shop stock for RV HVAC and appliance repair

Specs At A Glance

Good To Know

Q: How do I know if my limit switch has failed? A: A failed limit switch commonly causes the furnace to short-cycle, run briefly, or stop heating altogether even when the thermostat calls for heat. Testing continuity across the switch with a meter confirms whether it has failed open.

Q: Is this an original Atwood part? A: This is an aftermarket replacement limit switch made to fit Atwood Hydro Flame 8500 Series furnaces and cross-references OEM numbers 37022 and 36176. It is not an original Atwood-branded component.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.