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    markwells111's Avatar
    markwells111 Posts: 5, Reputation: 1
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    #1

    Nov 19, 2014, 11:49 AM
    Why does my central heating unit stay on
    Why does my central heating unit stay? / I changed the thermostat on the wall and put a new one in. the blower motor no longer runs. The heating element stays on.
    Grady White's Avatar
    Grady White Posts: 1,417, Reputation: 59
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    #2

    Nov 19, 2014, 03:44 PM
    Is this furnace electric, gas, or oil?
    markwells111's Avatar
    markwells111 Posts: 5, Reputation: 1
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    #3

    Nov 19, 2014, 09:37 PM
    Electric
    markwells111's Avatar
    markwells111 Posts: 5, Reputation: 1
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    #4

    Nov 20, 2014, 10:06 AM
    Quote Originally Posted by Grady White View Post
    Is this furnace electric, gas, or oil?
    The unit is all electric
    bitters's Avatar
    bitters Posts: 348, Reputation: 12
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    #5

    Nov 20, 2014, 10:12 AM
    What is the make and model number?
    markwells111's Avatar
    markwells111 Posts: 5, Reputation: 1
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    #6

    Nov 20, 2014, 02:38 PM
    Nordyne intertherm model E2EB -15HA 1/3 horse power 4 speed 4 ton.

    ]Nordyne intertherm model E2EB -15HA 1/3 horse power 4 speed 4 ton.[/QUOTE]
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    bitters Posts: 348, Reputation: 12
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    #7

    Nov 20, 2014, 03:55 PM
    Quote Originally Posted by markwells111 View Post
    Nordyne intertherm model E2EB -15HA 1/3 horse power 4 speed 4 ton.

    ]Nordyne intertherm model E2EB -15HA 1/3 horse power 4 speed 4 ton.
    [/QUOTE]

    Look's like the fan relay is bad (IFR2).
    Attached Images
  1. File Type: pdf E2EB Nordyne.pdf (116.0 KB, 238 views)
    2. Grady White's Avatar
    Grady White Posts: 1,417, Reputation: 59
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    #8

    Nov 20, 2014, 07:06 PM
    The thermostat may have to be configured for electric heat. Refer to the installation booklet which came with the new thermostat.
    markwells111's Avatar
    markwells111 Posts: 5, Reputation: 1
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    #9

    Nov 22, 2014, 11:04 AM
    Quote Originally Posted by Grady White View Post
    The thermostat may have to be configured for electric heat. Refer to the installation booklet which came with the new thermostat.
    Grady I replaced with the same type. I brought both at the same time years ago. Do you think maybe the 3 pole sequencer is bad? Is it part of the fan relay?
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    bitters Posts: 348, Reputation: 12
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    #10

    Nov 22, 2014, 12:09 PM
    Your unit doesn't have a sequencer. The contactor pulls both heat strips in at the same time. If the heating elements are coming on the contactor is good. I would replace the relay (IFR2).

    With the fan not running the limit switch should shut off the element's.
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