HVAC Questions? Ask an HVAC Expert for Answers ASAP
sounds like your flame sensor may need cleaning
where is it located?
it is a steel rod stuck in the flame on the end of one of the burners, mounted with porcelain
it will have ONE wire going to it
not to be confused with the igniter, which has 2 wires going to it, steer clear of it, its quite brittle
It can be cleaned with steel wool or scotchbrite
my brother in law is helping me-- he located it -- now he is removing it
usually held on by one screw..
some models of lennox are quite hard to get at, but i think yours may be easy enough
does it look oxidized? white crusty etc..
he went to look for a socket so he can remove it
hmm socket? maybe hard to reach, it may be a 1/4 inch socket
that's what it looks like -- he's getting close
he's getting a couple other screws off to get to the part
we cleaned an l shaped metal rod -- is that the correct part?
L shaped, not I shaped
it didn't look white or crusty
something like that but it could be in a L shape
ours looks just like that but the rod is an L shape -- he's putting it back in now
ok, sometimes they dont look all that dirty but its enough to through it off..
also make sure any grounds (green wires) are screwed on securely and no corrosion, there might be one near or mounted on the burner assembly itself
everything back where it was and still flashing green
sounds like it is starting and then stops in a couple seconds
turn the power off to the unit for 15 seconds and back on
tried that -- same thing with flashing green
can you get me the model number of the furnace? should be inside somwhere..
looking..... what kind of number is XXXXX?
turn your thermostat down or off, then turn power off, leave off for 1 minute, power it back up then turn the thermostat back up to try and bring it on
it should be inside on the walls somwhere, on a big white sticker
usually near the top of that sticker
97L4801 -- is that it?
dont think so, that could be a serial number or something..
it may start with a G.. not not for sure
thats it thanks
and staying on?
so far so good
what will happen if it doesnt sense the flame right, is, it will try 3 times, each time lighting for a few seconds, but then it goes off on safety, thinking that there is no flame
we're listening and watching to see if it will stay .... give us a minute, please
now it appears to be blowing but no flame -- it went out and it's not re-firing
and what is the code flashing?
the diagnostic code?
how hot are the ducts?
ducts are not hot, flame was on for about 60 seconds
thermostate showed increase of 1 degree when it was briefly on
double green flashing?
give me a sec
bob hit reset on the thermostat and the flame ignited, we'll wait and see again
hows the batterys in the stat? changed lately?
yes, from a brand new package. good question, tho. my thermo doesn't show low battery -- the only way i can tell is that the numbers for the temp setting don't show. but in general, low battery can cause odd problems?
yes it can, not the low flame signal one though
be sure to use good alkaline batteries
it's still running
is your air filter clean?
bob wants me to ask if he should replace that part or was cleaning it sufficient?
cleaning is generally sufficient, as long as the porcelain was intact, no cracks etc..
it should be cleaned once a year
air filter is clean
i love you
i will give you $10 tip -- so $25, okay?
brother in law wants to know if you're married :-)
haha yes I am married lol
damn it! LOL
funny the thermostat went out there..maybe a fluke, put fresh batteries in anyway to be sure
Let me know if it acts up any more
now do i hit Reply to "pay" you?
that is the link to your manual, it has a good troubleshooting list of diagnostic codes etc..might come in handy
I guess thats how it works yep
Thank you from the bottom of my heart -- we were freezing!!!
Glad to help :)