RV Furnace Sail Switch for Dometic Atwood Hydro Flame AFM AFLD AFLA DFMD - 31094

Sail Switch for Dometic Atwood Hydro Flame RV Furnace

This sail switch is a replacement part for RV furnaces from Dometic, Atwood, and Hydro Flame, compatible with models AFM, AFLD, AFLA, and DFMD, carrying OEM cross-reference number 31079.

Overview

This sail switch is designed to detect airflow in RV furnaces from Dometic, Atwood, and Hydro Flame, ensuring safe operation by shutting off the gas if airflow is insufficient. It fits models AFM, AFLD, AFLA, and DFMD and uses the cross-reference number 31079. A reliable replacement sail switch keeps your RV furnace functioning properly during cold-weather trips.

Built For Performance

• Precision-switch mechanism responds to minimal airflow changes
• Corrosion-resistant metal contacts for long-term reliability
• Direct replacement design matches OEM specifications
• Compact size fits inside standard RV furnace housings
• Tested for consistent performance across temperature extremes

Fits These Machines

• for Dometic RV Furnace models AFM, AFLD, AFLA, DFMD
• for Atwood RV Furnace models AFM, AFLD, AFLA, DFMD
• for Hydro Flame RV Furnace models AFM, AFLD, AFLA, DFMD

On-The-Job Use

• Replaces a faulty sail switch in an RV furnace to restore heating
• Ensures safe ignition by verifying proper airflow before gas valve opens
• Commonly used in motorhomes, travel trailers, and campers
• Ideal for seasonal maintenance or emergency repair of RV heating systems

Specs At A Glance

Good To Know

Q: What does a sail switch do in an RV furnace? A: A sail switch acts as a safety device that detects airflow from the furnace blower. If airflow is blocked or interrupted, the switch prevents the gas valve from opening, avoiding dangerous gas buildup.

Q: How do I know if my sail switch is faulty? A: Common symptoms include the furnace not igniting or cycling on and off repeatedly. A multimeter can be used to test continuity across the switch; no continuity when the blower is running indicates a faulty sail switch.

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