Rv Furnace Blowing Cool Air

Fan is running but furnace produces no heat.

Rv furnace blowing cool air.

I have a duo therm propane rv furnace that will only blow cold air. As a first step you may want to clean the combustion area. Your next rv furnace troubleshooting is to verify that there is 10 5 volts of battery power coming into the unit. Furnace could also make nosie.

If so the limit switch a furnace safety device turned the furnace burners off. As a result the vent will work but no heat will be produced. Rv furnace troubleshooting may also be necessary when a spider has spun its web inside the furnace area. 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.

A weak power source won t trigger the sail switch and it won t regulate the air flow. 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. The blower keeps blowing to cool the furnace down to a safe level. It does kick on and off.

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. An rv furnace has an internal sail switch that will prevent the machine from igniting in cases of air flow being insufficient for combustion.

We have plenty of propane. It worked fine in june and we didn t use it through the summer but now it does read more. People get confused and sometimes even scared when this happens. After all a furnace shouldn t be blowing cold air right.

Rv furnace stops and starts. This issue is often caused by the thermostat receiving false readings.