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Low air flow coming out of certain vents.

No return air except for the basement. Here's a rough picture of the setup. The house was built in approx 1914....

I have it fixed thank you. I misread one of the voltage readings on the limit switch that attatches to the squirrel cage (fan) 25 volts on one side, 56 on the other. Jumped it ran fine. Bought a new...

It only has one pressure switch.

I have a 4 year old furnace. Igniter glows but will not ignite.then it shuts down. Then starts to recyle again. I have checked voltage at the gas valve and all limit switches. All read 25 volts...

Thank you gentlemen they job is done. It was a blocked inducer vent pipe. Thanks for everything

It's a 90 % lp
The legend says pressure switch but I replaced it. It is doing the same after replacing the switch. Is there a way to clean the draft inducer. It doesn't seem to be creating enough...

Okay, lets start with you guys have been a mountain of help!! Secong I have replaced the board the pressure switch and thermostat.. I have to manually (apply suction) to the pressure switch and she...

Okay here we go. New board new pressure switch. All possible causes according to contractors. Now I get nothing. Board lights up stays solid but nothing. No fan no blower no nothing. I put the old...

Yes your right sorry. Not very good with the proper terms. Yes I checked the wires and they seem to be the same. I took digital pics of the board before I took it off and used it for the basis of...

Okay guys new problem, replaced the board. Main blower is fixed? Now as soon as I power the unit up, the condenser motor starts running and the indicator light blinks three times. What can I change...

The power to the furnace is on the thermostat is off.

I have even tried to disconnect the thermostat. But as soon as I turn the power on whether the thermo is attatched or not, the blower runs,...

I have a goodman furnace. Forced air. No a/c. I turn the power on and she starts. Thermostat is off. No wires are crossed that are visible. The pilot does not ignite but the heating element is on. No...