Rv Furnace Blowing Cool Air

This issue is often caused by the thermostat receiving false readings.

Rv furnace blowing cool air.

Rv furnace stops and starts. As a first step you may want to clean the combustion area. As a result the vent will work but no heat will be produced. 2 furnace overheated let s say your furnace blows hot air then cold air but then stops blowing any air at all after a while.

Several things can be checked for a cause in this case. Either hot air from the duct is blowing on the thermostat causing it to think the rv is warmer than it actually is or cold air is blowing across the thermostat resulting in a similar issue. We have plenty of propane. I have a duo therm propane rv furnace that will only blow cold air.

If so the limit switch a furnace safety device turned the furnace burners off. Furnace could also make nosie. An rv furnace has an internal sail switch that will prevent the machine from igniting in cases of air flow being insufficient for combustion. After all a furnace shouldn t be blowing cold air right.

Common rv furnace problems include the furnace wont light it wont heat properly or it could cycle on and off. Anything under 10 5 will result in the fan operating but just blowing cold air as the gas valves will not open. This issue or if the furnace is blowing cold air could be due to the circuit board issue or the limit switch issue. It s possible your furnace overheated.

Once again the low battery voltage can be the issue here so the best thing to do is to replace the battery. It worked fine in june and we didn t use it through the summer but now it does read more. Fan is running but furnace produces no heat. Rv furnace troubleshooting may also be necessary when a spider has spun its web inside the furnace area.

It does kick on and off. The blower keeps blowing to cool the furnace down to a safe level.