As I detailed recently, I was able to remove my furnace
motor (an 8012) from the 17' Bigfoot
and lube it successfully getting rid of an awful squeak from the bushings.
Of course, things never go so easily. I appear to have two outstanding issues that may or may not be linked.
On extended usage ( a few hours), the furnace
didn't re-light when trying to come back on (its a pilot version). I was able to be there at another test period when it tried to relight, and noticed the pilot was no longer on. The fan function is fine and comes on when commanded. I think the pilot goes out after some delay, because I have been able to do a restart immediately or a short time after shutdown.
I detailed about a week ago, that the motor in my unit has been previously replaced by someone, with one that fit, but its a significantly higher amperage at 2.8, that what the furnace
is meant to have (1.6 amp motor). This probably throws more combustion air than is needed to the burn system and its orifices (air/gas) which does who-knows-what.
My Hydro-Flame manual, notes this: "low microamps can be caused by too much combustion air". But I also note that statement us under the section for Direct Start Ignition System - of which mine is not. Sooo, I have no clue if that is relevant to a pilot system, or the burn system itself??
My second, related or not, issue is that my burn flame is decidedly orange, and not the desired blue. Its not a 'lazy yellow' which is another symptomatic indicator of other things. My pilot is pure blue.
I've played around a bit with the pilot adjust screw, and another adjust screw that I think is labelled 'vent', and haven't really noticed any difference in the colour of the burns. I even tried mostly blocking off the air intake holes at the outside of the trailer to see what that would do...again, no perceivable change.
I know I should remove the pilot tube and clean, along with any other bits sitting out in the flame path.
I will also order a new 'correct' motor, so that I take that unknown out of the equation.
At this point, I'm at the limit of any knowledge of how to fine tune this thing, but for now I can get heat if and when I need it anyway. I don't think anything is amiss with the thermostat or sail switch, or venting.
Doing an overnight mid-week, but will have a ceramic heater along for back-up