Alright so i need the advice from the powers that be on my furnace. It was acting up all weekend through the cold and I am at a loss as to what the problem is...
SO basically wake up Saturday and look at thermostat, its 4 degrees colder than the set temp. Furnace is not running. I go downstairs flip the switch on the furnace back and forth and everything starts working fine house warms up nbd.
That evening, same problem. I start turning the gas fireplaces on to heat up the house. Reset furnace again etc. Turn off fireplaces when i go to bed. Sunday morning 6 degrees below set temp and furnace is still not on. No airflow and no heat form registers.
Last night i spend some time with it to figure out wtf is going on. Replaced the batteries in my thermostat just in case.
Will always turn on immediately when i switch the power on-off.
Runs great for maybe an hour or 2 (I didn't time how long it took to shit the bed).
When it is running the flame comes on for approximately 3 minutes 45 seconds then the flame goes out with a loud pop. Fans keep going. 1 and a half minutes later it lights back up and repeats, shutting down after 3:45 seconds. ts consistent. It will do with for about 15-20 minutes then shut down all together for about 5 minutes, then it all repeats. I don't know how many times it does this before it decides to not work any more.
Last winter i had a similar problem but much worse(house was dropping below 10 degrees C), idiot repairman from builder was convinced it was a dirty filter and i had to get him to come back 3 times to get him to even take the cover off the thing. He eventually replaced the pressure switch and the furnace ran merrily for the rest of the year.
Furnace is an Armstrong 93% gas forced air furnace...
I do not know where to locate the diagnostic LED's ( i took the cover off this morning and didn't see anything). I am concerned that it is locking itself down and maybe the short cycles / loud pops (flameout?) have something to do with it.
Help me beyond, you're my only hope...
TLDR
My furnace wont run through the night/day and my house is getting cold . I need a contact for a reliable solid repairman or a miracle easy fix from a helpful beyonder.