“One common reason for the furnace blowing cold air is low battery voltage. Unlike a residential furnace, in which the blower doesn’t start until the plenum has warmed up, an RV furnace starts blowing immediately. … That situation can occur when the house batteries are weak.
Why is cold air blowing when the heat is on?
Your furnace may be blowing cold air because the filter is too dirty. A dirty air filter blocks airflow over the furnace’s heat exchanger, causing it to overheat. When overheating, your furnace can trip a high limit switch, causing the furnace burners to shut off so that the heat exchanger does not crack.
Why is my furnace running but no heat?
Dirty filters are the most common cause of furnace problems. Dust and dirt restrict airflow—and if the filter gets too clogged, the heat exchanger will overheat and shut off too quickly, and your house won’t warm up. If the blower is running but no heat is coming out, replace the filter.
What do you do when your furnace is blowing cold air?
When a furnace blows cold air, there may be an issue with the unit’s electronic control panel. This is sometimes easily solved by resetting the system. Turn off power to the furnace at its ON/OFF switch. Wait a few minutes, then flip the switch to ON.
Why is the heat in my camper not working?
If the furnace runs, but you aren’t getting any heat, check to see if the propane is turned on. If the furnace still doesn’t run, try lighting a stove burner. … If the pilot won’t light, check to be sure you have propane. One other RV heater troubleshooting tip is: check the thermocouple.
What to check if heat is not working?
Check your power source—a tripped circuit breaker or blown fuse could be the reason for your furnace failure. Reset your breaker or replace the fuse to see if that restores heat. Check your filter—if it’s so dirty that your system is struggling to move air through it, your furnace could overheat and shut down.
Why did my heater stop blowing hot air?
First, check to make sure the thermostat is set correctly. You will want to make sure that the fan control is set to auto, and not ‘on’. If the thermostat appears set correctly, turn off your heater at the thermostat and check the filter. If the filter is dirty, replace it.
What do you do if your furnace isn’t heating up?
These 5 fixes can solve most furnace problems without you needing to pay for a repairman to come out.
- Change the furnace’s air filter if it’s dirty. …
- Check your thermostat. …
- Make sure the blower motor panel is shut. …
- Inspect your air ducts. …
- Make sure the gas valve is open.
Is there a reset on a camper furnace?
Resets and Lockouts
The lockout condition can be reset by turning the thermostat off and reducing the temperature to a value which would not cause the furnace to turn on. Wait approximately 30 seconds and then turn the thermostat back on and increase the temperature to the desired level.
How does a heater work in a camper?
An RV heater is a forced air heater. What this means is that when the air in your RV falls below the temperature on the thermostat, hot air is forced through the vents and into the living space. That hot air is created using a flame fed by propane and forced out of the vents in your rig by a blower fan.
Does my RV furnace have a pilot light?
Many new RV furnaces have replaced the pilot light with a direct spark ignition system. … The issue is likely within the furnace assembly. Parts such as the sail switch, limit switch, blower motor, circuit board or burner assembly can all cause problems, but should be replaced only by a qualified technician.