I have a Payne 394gaw furnace. The house thermostat calls for heat, the igniter assembly sparks and lights fine. (problem 1): It takes about three minutes for the thermocouple in the igniter assembly to close (problem 2): The main gas starts, runs for about 10 seconds, then stops, then...

Napoleon 1401 fans start up and run 15-20 seconds, then stop for a minute or two, then repeat 15-20 seconds, etc. What could be causing this and what could I do?

I have an old Sears Power Miser Natural gas furnace. It doesn't always come on, but when it does the thermostat clicks and a buzzing starts. You can hear the gas flame start and then 10 seconds later it shuts off. If I turn the fan on manually (before the 10 seconds is up) the flame remains burning...

I have a goodman furnace 98% efficient it works fine on heat but when I run the ac unit it will run fine for an hour or three but then it will start stoping and starting the blower motor I have changed the transformer the blower motor the door switch anyone have any idea why it does this any help...

The central a/c unit worked fine all day and in the evening started a new cycle stopped after about 30 seconds and started making a loud noise inside the air handler for around 90 seconds and tried to start a new cycle without success. I turned the unit off overnight and back on the following...