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Old 01-19-2009, 01:18 AM   #16
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heat not getting warm


measure voltage at each end of the element, if you have 240give or take there than take an amp reading if you have 240 and no amperage the element or fusable link is bad. or just wait about five minutes for all the seq. to cycle on and amp the incoming power wire

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Old 01-19-2009, 01:54 AM   #17
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heat not getting warm


Up until Friday I was a multi craft maintenance tech for a tier 1 supplier to Ford, GM, Nissan, and Toyota. If you've ever seen the news talk about the auto companies while they show video robots welding or carrying parts thats what I took care of. That and whatever else pnuematic, hydraulic, electrical, PLC's, just no HVAC.

Its my first whack at the HVAC bit. Its not that bad heck with some training I may actually fix something. I took one of the panels off and a schematic was about to fall off so I grabbed it and it literally crumbled in my hand. I thought great that is going to be a big help. An old outdated unit with half of a schematic. There is some small blue box that has been added to the unit. I have no idea what it is its not shown on the schematic or at least the half that I still have.

Maybe i'll get someone with skill to look at it.
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Old 01-19-2009, 02:10 AM   #18
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heat not getting warm


back to my original question how many elements and how many amps is the system pulling just snap your amprobe around one of the main power wires inside the furnace assumeing you only have one supply wire
i just reread your original post seems as though all the elements are working based on you stating they all have amperage
have you checked the a/c coil to see if its clogged with dirt? how bout the squirrill cage
no chance theres a fire damper mounted above the furnace is there? although you wouldnt have any airflow and since you didnt mention that ill assume thats ok
is this thing a heat pump or strait electric heat

Last edited by kennzz05; 01-19-2009 at 02:21 AM.
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Old 01-19-2009, 02:39 AM   #19
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heat not getting warm


This is electric no heat pump. I found two elements that were intermittent. Still even when all the elements were on and drawing amperage which was 20 amps each there was little heat. There are three elements. I have plenty of air flow just not much heat. The unit pulls just over 60 amps total.
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Old 01-19-2009, 02:52 AM   #20
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heat not getting warm


its probably undersized 15kw is only a little over 51,000 btu and if your in the part of the country thats really cold right now thats why it is acting up now look into slowing the fan down to make the heat warmer red is the color of the slowest fan speed see if its not being used and swap it with whatever wire the fan is running on now
you mentioned intermittant elements if there cycleing on the limits the limits could be weak you could bypass the limits and see if that helps and if so replace them


Last edited by kennzz05; 01-19-2009 at 03:00 AM.
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