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Old 11-28-2021, 12:18 PM   #1
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Mini Lite 1909 SG Suburban NT-16SQ-NT-20SQ Furnace

Went out to storage site to do a few things in the trailer and since it was in the 30's decided to turn on the furnace. Turned up thermostat but never got the blower to kick in. There was just a faint breeze of warm air coming out. Waited about 20 mins and still nothing. Checked the stove top and it lit fine. Plan to go back out tomorrow and try it again. Hoping this is something simple because I don't want to leave it with dealer for a couple weeks. Did not check fuse the first time out and didn't pull up the bed and floor to get to the furnace.

Any thoughts appreciated. We're hoping to get out in the snow this year.

Thanks,

TBDub
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Old 11-28-2021, 12:42 PM   #2
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How was your battery power level?

Furnaces are power hogs and need good voltage to operate properly.

We're you connected to shore power?
Do you have a battery cutoff switch?
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Old 11-28-2021, 04:43 PM   #3
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No electric. Have shut off for AGM. Should have checked it. It powered up those teenie lights. You think I'd get enough power if I plug it into my TV?

I'll check battery charge. I think you are right.

Thanks,

TBDub
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Old 11-28-2021, 07:43 PM   #4
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Your post is a bit confusing.
The blower never kicked in, but you say there was a faint warm breeze.
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Old 11-29-2021, 12:12 PM   #5
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Right. A a little warm air coming out of the heat ducts but no Woosh and blast of air. Doesn't make sense. But when you are getting heat there's a nice warm exhaust coming out of the exhaust ports on the side of the trailer and the blower will wake the dead.

Going out to storage now and try again. Can't believe that the battery is the problem because it had enough power to move the slideout. So, you'd think it could run the blower.

TBDub
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Old 11-29-2021, 02:54 PM   #6
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Can't see it being the battery either.
Unless the sail switch is stuck closed allowing the furnace to fire up with a leak battery.
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Old 12-01-2021, 11:27 AM   #7
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Mini Lite 1909 SG Suburban NT-16SQ-NT-20SQ Furnace

Checked it out again. The furnace lights but the blower only runs on Low.. Pushed the Thermostat up to the limit on Auto and high never kicked in. Tried switching form Low to High and nothing.

Would this be a problem with the Thermostat or is it at the furnace itself? Really can't plan any snow camping unless we can get that blower to kick in on high. Once you get down into the 30s or 20s it needs to run on high to keep the place warm.

TBDub
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Old 12-01-2021, 04:51 PM   #8
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Furnace fan is one speed. AC is high speed. Fan should start as soon as there's a call for heat. Once fan is confirmed via sail switch pilot lights, when pilot flame is confirmed via thermacouple the gas valve opens. That's the sequence for a furnace. So first thing you should feel/hear is the blower/fan. NOTHING works if there's no 12 volts.
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