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I apologize for the delay. I just logged on and saw that no one had picked up your question yet.
Do you still need assistance?
do you have wired in series with a pressure or sail switch?
I understand that...and all parts have been there for 10 years. But I need to know what you have for control as the humidistat is only one part. Many units have an air switch in the same circuit...so what I need to know is once the wires leave the humidifier do they go to humidistat and then something else?...or ONLY furnace humidifier and humidistat?
Thank you, ***** ***** things!
Now all we need to know is if inside the furnace...the red wire runs from:
a transformer attached to HUM terminal
a current sense relay wrapped around a blower wire
or direct from a HUM terminal on circuit board
Then we should be close to wrapping up.
Now first..check the transformer wires that go from transformer to board and the blue and yellow that feed the transformer. Make sure all are tight and secure.
Then the brown plastic box....can you see any numbers on it or post a pic of it?....this is something in the series we need to check
Thank you!,,,that is a current sensing relay. It allows 24v to humidistat only when the blower is running.
Now as a test...remove the 2 wires that go to the yellows...and attach the 2 wires direct as though the current sense relay is not there.
remove the wires that feed from the transformer.
temp place on the furnace terminals R and C
keep me posted when you return
ok yours are separated and labeled prob different.
R is 24v on left side of board with red wire. Then you see the light blue wires from left bottom of transformer..those are "c' or "common".
But you are correct.....run a wire from transformer red bottom right and transformer common bottom left blue wires and apply direct to solenoid
thank you. are the wires you hooking direct to the 2 wires coming out of the solenoid?