Rv Furnace Blowing Cool Air

I have a duo therm propane rv furnace that will only blow cold air.

Rv furnace blowing cool air. Your next rv furnace troubleshooting is to verify that there is 10 5 volts of battery power coming into the unit. 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. People get confused and sometimes even scared when this happens.

Rv furnace stops and starts. A weak power source won t trigger the sail switch and it won t regulate the air flow. Furnace could also make nosie. 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. If so the limit switch a furnace safety device turned the furnace burners off. It worked fine in june and we didn t use it through the summer but now it does read more. Common rv furnace problems include the furnace wont light it wont heat properly or it could cycle on and off.

Fan is running but furnace produces no heat. 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. This issue is often caused by the thermostat receiving false readings. Anything under 10 5 will result in the fan operating but just blowing cold air as the gas valves will not open.

Rv furnace troubleshooting may also be necessary when a spider has spun its web inside the furnace area. Several things can be checked for a cause in this case. As a first step you may want to clean the combustion area. The blower keeps blowing to cool the furnace down to a safe level.

Once again the low battery voltage can be the issue here so the best thing to do is to replace the battery. It does kick on and off.