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Old 02-09-2019, 08:41 PM   #1
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Furnace blower not running

Just got our new TT last week. It's cold, but I'm excited to load my stuff. Fired up the furnace today. Husband thinks blower isn't working. Not a lot of air coming from the vents. Hoping nothing is broken. I did realize that the battery was dead due to a pantry light being left on. Could the dead battery cause the blower not to run? and will this fix itself once we're charged back up?
Thanks.
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Old 02-09-2019, 08:56 PM   #2
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Yes, your furnace runs off of 12 volt system. Plug in and charge the battery and you should be fine.
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Old 02-09-2019, 08:58 PM   #3
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Just got our new TT last week. It's cold, but I'm excited to load my stuff. Fired up the furnace today. Husband thinks blower isn't working. Not a lot of air coming from the vents. Hoping nothing is broken. I did realize that the battery was dead due to a pantry light being left on. Could the dead battery cause the blower not to run? and will this fix itself once we're charged back up?
Thanks.
Yes, the furnace blower is a 12 volt motor which means it gets juice from the battery. BTW, the blower has to run fast enough to close a sail switch for the control board to open the gas valve and ignite the gas. If the blower isn't working, the "fire in the hole" isn't working, either.
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Old 02-10-2019, 08:28 PM   #4
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Thanks for responses. Battery is fully charged this morning. We turned furnace back on.
There is heat coming from the floor vents, but husband doesn't think it's as strong as our previous camper. We went from a 29ft to a 37 ft TT (3 vents to 4 vents). Would the size cause the airflow to feel reduced? Plan on calling dealership on the morning to ask, but is he just "expecting too much" from this furnace?
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Old 02-10-2019, 08:41 PM   #5
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Some owners have found disconnected and/or crushed ducts. I found a metal plate missing from my furnace cabinet. That caused hot air to blow out the air return grate instead of through my ducts. You may have to put eyes on the furnace and ducts.

What kind of trailer do you have?
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Old 02-11-2019, 07:01 AM   #6
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We did our walkthrough when we picked up and the heat was on, but neither of us remember checking to see how strong the air was coming from the vent.
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Old 02-11-2019, 07:53 AM   #7
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Chances are it the same size furnace and yes an extra vent will slow the force of the air flow but not the amount of heat produced. Fast air flow cools off hot air. remove the cover off the inside and look at the furnace as mentioned above but sounds like your over thinking this.
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Old 02-11-2019, 02:27 PM   #8
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Thanks for responses. Battery is fully charged this morning. We turned furnace back on.
There is heat coming from the floor vents, but husband doesn't think it's as strong as our previous camper. We went from a 29ft to a 37 ft TT (3 vents to 4 vents). Would the size cause the airflow to feel reduced? Plan on calling dealership on the morning to ask, but is he just "expecting too much" from this furnace?
I think my initial approach to this issue might be to get in the trailer, turn on the furnace, set the thermostat to an appropriate temperature and see if the thing gets warm. If it does, great, no problem. If not, then worry about it.
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Old 02-11-2019, 03:49 PM   #9
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Our trailer - 2 vents

our trailer only has 2 heat ducts. One near the rear of the trailer/bath and the other by the front door entrance on the kitchen counter cabinet. Occasionally our furnace will thermal down due to not enough air flow. It is a resettable thermal switch and after a few moments with the burner off it resets and the burner comes back on.

I can't see an easy way to cut a third duct so we will just live with it.
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