Originally Posted by Opie91
I had a similar issue with my first unit. The fan motors on these units cannot take much restriction on the fresh air inlet(heated air going into cabin). I kept getting an getting the fan overload warning. A shorter higher quality inlet duct solved
Also the plastic cases on these heaters are real crap. The fans on both of my heaters were rubbing the case. One I couldnít even hear. To resolve this I took the heater out of the case and extended the feet on the bottom of the heater. These feet rest on the inside of the case and align the fan with the inlet hole. Now the fan is in the center of the inlet hole and the it works considerably better.
I'm using very short runs for the ducts. Just an aluminum
"el" for the outlet, and a short aluminum
flex duct for the inlet. None of that plastic dryer vent hose with all the ribs to restrict flow.
I do get very good air flow, so I'm assuming the fan is OK.
I'll try removing the intake hose completely. No real need for it, when I think about it. If that solves the overheating
problem, that would be great.