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    wichita's Avatar
    wichita Posts: 1, Reputation: 1
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    #1

    Oct 26, 2011, 08:16 AM
    Nordyne furnace codes?
    I have a Intertherm Nordyne Model#MMBB-056ABHR-06 gas fired furnace with "NO HEAT". It was manufactured 12/96. The electronic control board is blinking 3 times. Also the pre-blower seems to work right and the board clicks I believe properly. What could be the problem?
    wmproop's Avatar
    wmproop Posts: 3,749, Reputation: 91
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    #2

    Oct 26, 2011, 08:50 AM
    You might look on the back/inside of cover for a list of what codes are indicating, when it starts through the steps it should be 1 st preblower(inducer motor,, 2nd igniter ( did you see it glow?) 3RD if igniter doesn`t come on the gas valve won`t open and burners won`t fire up,, after heat exchanger get to correct temp. then the blower fan will come on,, let us know when sequence stops
    roadeo's Avatar
    roadeo Posts: 2, Reputation: 1
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    #3

    Mar 3, 2012, 02:10 PM
    No Glow. The blower motor is always running while the furnace is "cycling". It'll run for a minute and then stop. Wait a few seconds and then run again for another minute before it shuts down again. It'll do this until I start checking the "vacuum" lines, condensation drain lines and wiggle the wiring and then it'll start up and run fine for days.
    When I pull off the drain line that goes to the condensation pump, I hear a pretty strong suction coming from the part of the furnace the drain line connects to. I don't understand why it does this if this is the "drain". Is this OK?
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