Lennox A/C unit: Model HS23-311-2P Everything has power, its just the fan sometimes does not come on, pushed the reset button the fan came on once, and by Tuesday it stopped pushed reset heard condenser but fan didn't come on may have to manually push fan? What makes this stop? Should it be taken...

Hello everyone, First I want to say thanks, I've already solved one problem with this furnace this weekend. I had a burners failed to ignite code so I cleaned the flame sensor but now I get the primary or secondary limit switch open. First lets start with the sequence of events for my natural...

Had cold snowy days and furnace will shut off before reaching set temp. The exhaust pipes were in the direct path of the blizzard. I can't see any ice blocking but there is a large chunk that appears to be from one of the pipe.

Lennox Value Series... serial 5896G56798 M/N 10ACB365-5 P Central a/c unit and a Lennox G26 Series gas furnace both about 13 or 14 yrs old. Came home from vacation and turned A/C on (son tried earlier in the week) only a low hum whether on auto or fan or if we try heat(same thing, low hum)......