Electric furnace


Old 11-28-08, 02:59 PM
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Electric furnace

We have an old Coleman electric furnace that just quit working.
I replaced the limiter last year because only 1 of the 2 elements were working. Had no problem until a few days ago. The furnace just quit. I ran a tester on it and everything is getting power. It doesnt even click when I turn on the thermostat.The fan will not run even on "on". I am completely lost. I ordered a new sequencer hooked it up and still nothing. Any help would be completely appreciated.
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Old 11-28-08, 07:01 PM
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Are you getting 240 volts to the furnace?

You take a reading at the furnace where the T-stat wire meets up? R and W.
What is the model # on the furnace?
Old 11-28-08, 07:55 PM
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The model number is 3400A812.
I tested both main legs and im getting 123 at each main leg before the furnace fuse box.
All 4 fuses are reading 114 the left side, so they are good.
Even not calling for heat it shows that the element wires are 114.
All sequencer terminals are 114.
My voltmeter is a junk harbor frieght so I cant check the low voltage wires,
however I did notice that I do not get that little spark when I touch the thermostat
wires together as they leave the furnace.

Not sure what you mean by where they meet.
They seem to meet at a "thermostat reversing relay".
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