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    David Cassingham's Avatar
    David Cassingham Posts: 1, Reputation: 1
    New Member
     
    #1

    Mar 4, 2010, 08:22 AM
    My heater turn on them off 3 seconds later over and over
    My heaters fan turns on then the second fan comes on the thing lights the natural gas then 3 seconds later the gas shuts off. It does this over and over again. And the house is not warm enough yet per the thermostat. It is a 14 year old day and night heater is this a fairly good brand yes or no?
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
     
    #2

    Mar 4, 2010, 04:44 PM
    Clean the flame sensor if so equipped.

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