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Unit continues to work fine, tested by temps in the 20-s at night couple of times. York part # for FLAME ROLLOUT switch pictured in post #12 is 025-26908-000 and I bought it real cheap here Thank to kok328 and this forum. Haven’t figured how to officially close the thread by myself, leaving...

Works for now(fingers crossed). Turned out inducer blower was working, but not good enough to close the pressure switch. Removed inducer blower, vacuumed inside, rotated fan manually. Removed flue collector box to which inducer blower is connected, cleaned it too. It wasn’t like I found...

Some history: At the end of last heating season this unit would ignite burners and after a short while the flame would go out. I left it at that till new season, and when decided to take a look – it won’t ignite at all. With the help from kok328 found bad high limit switch. Now, seeing...

You helped a lot and it's much appreciated , especially as problem still stands. I was just distracted by other things. Bought 320F switch. Using it temporary to fix this unit. If fixed, I’ll find the right one for perm and keep 320F as a spare for our main unit. The broken unit...

the switch/fuse has no continuity, needs to be replaced. I searched for exact same one, found info but no place to buy it. It opens at 152 degrees C or 306 F. I think it was not supposed to be there. Is is held by 1 screw, but there are 2 screw holes in the place I found it; looks like...

You were right on! The switch! First I didn’t see anything in the burn chamber, then looked in our main unit York Diamond 80 and saw the cylinder switch! In this small broken unit same wires just seem to go to the ceiling of the burn chamber, but there was a switch there and looks bad...

sure feels like something stupid (disconnected wire), before the pressure switches. Found troubleshotting manual for control boardhttp://www.white-rodgers.com/wrdhom/pdfs/06_Cat_pages/Cat_06_pg0278_281.pdf Going through chart 1(page 2) with inducer running there is 25v between C and R on...

There is what I suspect is a limit switch, round with 3 tabs, has too many wires connected, how to check it ? Checked pipes – clean. This unit is heating/cooling and cooling is fine, I had to say it earlier - might mean less tests. Found the control board in lower compartment with...

Gas is on; blue switch inside and red outside. Pressure switches not connected with each other. LEFT one(with 3 wires) connected by tube to inducer motor. Tube from the RIGHT switch(with 2 wires) splits in 2: to top gas chamber and to gas valve(with blue gas switch). What does it mean and...

Ignator looks like this http://www.theignitorstore.com/thumbnail/product/64297/640/480 If electronic means no pilot light, then it's electronic. Normally it should glow, but does nothing. Somethere I read(not about my model), that there should be 115 v coming to ignator. I disconnected the plug...

Natural gas furnace, 12 years old, small, only heats 2 rooms, Sticker says model # M3UF024SA for cooling, P2UDD06N03B01D for furnace, can’t find it anywhere. Situation: When heat is switched on motor starts running, pressure switch (the one on the right with 2 wires) closes (multimeter...