Furnace

[druganjk@gmail.com]

I have a 2018 Miramar 35.3 and the furnace will run very hard and loud and then will slow down for a while and then run hard and loud again. Is this a normal cycle or do I have a problem
Thanks

[16ACE27]

I assume "hard and loud" is when the flame is going and "slow down" is when just the fan is running. This is normal for the flame to come on and off while the furnace is running to prevent overheating the distribution box.

[Grumpy Grampa]

I have a Thor 2017 Miramar 37.1. When I run the heat. I wake up the entire Camp ground.

[Hooligan2]

Sounds like your furnace is going into overheat. If making a large temp change in the RV, the furnace temp sensor will stop the flame if the furnace plenum temp gets too high, the fan will continue to run to cool the chamber and then the flame will then re-ignite. This is normal most times. If it always does that you may have an obstruction in the vents or too few vents.