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Posted by Joseph Meehan on February 20, 2008, 2:08 pm
Sorry if this is a duplicate. Please let me know if it is, it appears it
did not make it the first time.
> Get the instructions for the thermostat out and take a look for
> anything a bout an anticipator. It may not be set properly for your
> furnace.
>
> The other idea that comes to mind is that a high heat sensor on the
> furnace is kicking in for some reason.
>
> --
> Joseph Meehan
>
> Dia 's Muire duit
>
>
>
>> My Amama 115,000 btu forced air system (1987) with White-Rodgers
>> controller is not reaching its thermostat setting. My thermostat is a
>> Honeywell set-back model. The furnace has a particular problem in the
>> morning to raise the temperature from the low temperature that is used
>> at night.
>>
>> 1. Thermostat calls for heat.
>> 2. Induced Draft motor starts
>> 3. Furnace makes a clicking noise and ignitor turns on
>> 4. Blower turns on.
>> 5. High temperature limit turns off burners (after 4 minutes)
>> 6. Ignitor turns on
>> 7. Gas lights and stays on for about (4 minutes)
>> 8. Furnace turns off without reaching thermostat setting
>>
>> I can shut the power off to reset the furnace and it will light off
>> again for about 15 minutes again. I have changed the Flame senor to
>> be sure that it is not causing the problem.
>>
>> Is there anything anyone has to offer on what might be tripping the
>> furnace?
>
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