Check out some similar questions!

dwr9 · Nov 19, 2008, 09:46 PM

Thanks, I'll definitely check that. The wires were installed on the new board the same way they were on the old one. I did some investigation online after posting earlier. Twinning seems to be hooking 2 furnaces up to basically act as one furnace sharing all the same ductwork and thermostat. I definitely don't have anything like that. I suspect the error the led is flashing is somewhat misleading. Guess I just have to keep looking for something else wrong.

dwr9 · Nov 19, 2008, 09:49 PM

I am sure I checked all the limit switches. Since the switches are hooked up in series I checked at each end of the circuit that goes through all the switches also and it is not open.

hvac1000 · Nov 19, 2008, 09:49 PM

I know what twinning is. Did it back in the 70's with Bryant furnaces.

Electronics are very sensitive to in simple terms positive and negative reversal. That is why I mentioned that the transformer wires might have been switched OR that could also be why the new board is doing the same as the old. Just a thought.

dwr9 · Nov 19, 2008, 10:25 PM

I appreciate the help and I will definitely be checking to make sure the wires are connected correctly.

dac122 · Nov 20, 2008, 06:19 AM

Maybe a call to York or whomever makes the board would help explain what will set off that code. I have had good luck with York's support.

dwr9 · Nov 20, 2008, 04:32 PM

Hvac100 appears to have come up with the fix on the new circuit board. I reversed the secondary wires from the transformer and the furnace is working. Thanks for the help.

hvac1000 · Nov 20, 2008, 06:32 PM

Glad you got it going

mygirlsdad77 · Nov 20, 2008, 06:39 PM

Reversed polarity can be a pain. Just glad hvac was here to help you out. Great job hvac.

hvac1000 · Nov 20, 2008, 07:33 PM

Originally Posted by mygirlsdad77

reversed polarity can be a pain. Just glad hvac was here to help you out. Great job hvac.

Being in this industry to long can have its advantages and disadvantages. LOL

dac122 · Nov 21, 2008, 06:25 AM

Originally Posted by hvac1000

Being in this industry to long can have its advantages and disadvantages. LOL

You really should get some formal dinner plates. They are much easier to eat from and wash. :D

Nice call on the reverse polarity.

hvac1000 · Nov 21, 2008, 07:24 AM

Thank you

mygirlsdad77 · Nov 21, 2008, 04:31 PM

Hvac, I don't laugh or even smile much. But that pic just made my day. The sad part is, someone has probably actually done this.

hvac1000 · Nov 21, 2008, 04:46 PM

Originally Posted by mygirlsdad77

hvac, i dont laugh or even smile much. But that pic just made my day. The sad part is, someone has probably actually done this.

I use some of those type things in class. They always get a chuckle.

New style heat and smoke detector combo unit.