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I have a 1987 mobile home with a coleman electric furnace model 3400-812. I need a wiring diagram for the repairman to use to rewiring all the new parts. He has installed a new fan blower motor, new Sequencer 10kw, 12kw Sequencer Relay,and a new MARS 90340 SWITCHING RELAY COIL 24 VAL 50/60 HZ 9100Y233Q00. The coils click on and heat and then click off without the fan coming on. The repairman is not sure why the the sequence is off and everything doesn't work together. Can you help, please. Thank you, Carol Davis

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I have a 1987 mobile home with a coleman electric - 5cd0d9d4-9d59-458b-ae93-d14f7aa016ab.jpg728c66bc-7660-4666-bc17-bdfa1b3130ed.jpg
I mean this respectfully, if the technician cannot wire a unit without a wiring diagram , he is not competent to do the work.
It is really very simple, If you look at the power lines entering a building, ther are but 2 hot legs of 115 volts for 230 volts and a earth / ground, every wire we will ever see are these 2 hot legs or a combination of them.
Every circuit requires 2 sides/legs of power, a device and a switch, begin at L1 go through switch to load return to opposite side of power from where you began, very simple.

If you do not know this a wiring diagram will tell him nothing but how to blindly try to follow some diagram he has no grasp of the theory behind or he would see how simple his dilamna is.

Posted on Oct 19, 2013

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