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    docktorpc's Avatar
    docktorpc Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Dec 20, 2012, 09:22 AM
    Error code 11 and thermostat display is blank
    I ran the diagnostic and it returns error code 11 which is useless. Right after power is applied to unit. The red diagnostic light comes on. According to the manual that is 24 VAC. The thermostat has a display but if I call for heat the display blanks and a red light is displayed. On the heater unit itself, I short the test/run to the 24VAC temporarily and get 1 short and 1 long 4 times. Then the blower turns on, ignitor glows then there are a couple of clicks and then everything stops and the red diagnostic light comes on again solid.
    smoothy's Avatar
    smoothy Posts: 25,490, Reputation: 2853
    Uber Member
    		  
    #2

    Dec 20, 2012, 12:31 PM
    What brand and Model thermostat and furnace do you have?
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