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    • Appliantology Live Dojo, Saturday, 4/27/2024 @10 AM ET
      27 April 2024 02:00 PM Until 03:00 PM
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      All Appliantology tech members are invited to join in this workshop on all things Appliantological. 
      We have a special session planned for this one. Instead of the usual Show 'n Tell on a technical topic, we're going to post tech sheets in the comments to this Calendar Event (scroll down to see what's posted so far) and ask specific questions that can only be answered by reading the tech sheet. If you at least try to answer the questions beforehand, you'll get a lot more out of it. 
      I'll be posting a couple more tech sheets before Saturday so be sure to follow this event to keep up with the tech sheets we'll be going through. 
      Who: This workshop is only available to tech members at Appliantology.
      When: Saturday, April 27 @10:00 AM Eastern Time.
      Where: Online via Zoom
      How:
      Click here to go to the forum topic with the registration link. If you're interested, register now. Arrive a couple minutes early to make sure your connection is working. Set a reminder for yourself for this workshop so you don’t miss it.  And check out past workshops here: https://appliantology.org/announcement/33-webinar-recordings-index-page/

Commercial makeup air furnace

Derik

By Derik
in DIY Appliance Repair Help

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Derik Kohai

Derik

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Anybody know anything about these units!! I think it has bad contactors in control area? Have no power to burner control, transformers ect but blower kicks on! If I knew the nature of beast (order of operation) could figure it out! Any guidance would help! Thanks

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Derik Kohai

Derik

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Didn't find model number, but news is that I had a friend (the mad scientist) come out to give a hand and I was exactly right it was one of the contactors was bad!!! Havnt ever messed with one of these and the controls are pretty complicated compared to most rooftop or residential furnaces so glad I had a friend who does alot of commercial stuff to give me a better understanding! So it's fixed but thanks for posting back jumptrout, much appreciated!!!

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applianceman18007260692 Sensei

applianceman18007260692

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Probably some critter crawled under a contact at the wrong time. LOL

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