HVAC Questions? Ask an HVAC Expert for Answers ASAP
what is furnace make/model?
You will need to replace the gas valve. This circuit is returning info to the circuit board of a short in that circuit.
See page 30 here - http://www.nordyne.com/Literature/708291b.pdf
Ok, this is contingent on the pattern...
continuous blink is gas valve..
One blink is limit
see page 31 for limit placement (behinf gas valve)...tap the switch, it sometimes resets that way.
Nada. The VR8205 is obsolete? Correct? I would assume that Honeywell manufactures an upgraded version suitable as a "swap it and go" for this particular valve model? I will not blow myself up changing it out...I am a renovation contractor by trade and completed two years of gas/pipefitting/plumbing at NAIT, here in Edmonton Alberta. Just never made it as far as the "controls" portion of the curriculum...LOL.
remove the 2 wires from the limit switch...touch them together...see if code ceases.
We can go from there....
Ok....use a paper clip to stick into the wire ends and loosely tape so the metal cannot touch cabinent...turn power off for 60 seconds....then turn back on. Tell me next code...
This bypasses the limit...which the bypass is for testing only.
Excellent.....now we know the limit is stuck open from the dirty filter...which is much better than a bad gas valve!
Option...remove the switch and clean it, tap it direct on switch...see if it resets...or replace switch. All local dealers will have one..just take it with you.
If you have a bit more time lets try this....I dont want you to run with it bypassed...remove the switch....heat it with hair dryer...then throw it direct to freezer for 5 minutes...then reinstall and see if it works.....
I will wait.
I will feel better if we can get it to reset.....
I am not one for chances....
It was already heated up nicely from being in position with the heat running. It's now removed and sitting on the front step @ -26C. Will leave it for 5 mins and retry with it re-installed. I'm guessing that if she won't fire, then the switch is toast? If it was a "Home Depot" kind of part, I'd run and grab one...but I seriously doubt it. My plumbing wholesaler will have one...(or tell me who to go see). But that's tomorrow AM, like I said. Time to start assigning folks for "fire picket" duties now? LOL
Well odds are one in a million something could go wrong.....but I just wont tell you to run it without the safety intact.
I really hope it resets....if not kepp a watch, or heat house up nicely and get up every couple hours to run and then shut down.....get the switch tomorrow (home Depot wont have)
Thanks for your patience!
Patience nothing...you just saved me a bundle buddy!!! Highly recomended.
Thanks for this...going to re-test switch now...hopefully it's ok.
All the best, Ron
I thank you...and wish you the best.
We're good to go...thanks again!