ReplyLOL! Sounds like you have an idea you'd like to share with usOriginally Posted by Milk man
Professional Member*
Unbelieveable!!!!!!!!!!!!!!!!!!
OP, let you neighbor do his thing and don't loose any sleep over it.
Please tell us what kind of thermostat you have. Is it an old style of with a mercury bulb or an electronic one?
Is there a thread in the pro section yet? We need to talk.
Beware of advice given by some guy on the Internet.
Professional Member*
LOL! Sounds like you have an idea you'd like to share with us
Training is important!
Practical Training is a must!
Professional Member*
Yes, I started a thread in the pro residential sectionLOL! Sounds like you have an idea you'd like to share with us
http://hvac-talk.com/vbb/showthread.php?t=921832
Beware of advice given by some guy on the Internet.
Professional Member*
I think that anyone clicking that link can see that thread. Better to just post the name of the thread.
Training is important!
Practical Training is a must!
Professional Member*
I loged out and tried to follow the link. Would not let me, so I think we are good. It is in a private area.
Beware of advice given by some guy on the Internet.
God Speed, Jim. We'll miss you - 2-26-23
many new furnace boards automatically bring on the blower when they receive 24 volts on the Y terminal. So it could easily be that the wires are switched.
Professional Member*
Problem probably lies in a spider web of low voltage wires somewhere above the basement where somebody wire nutted the outdoor unit to "G".
An answer without a question is meaningless.
Information without understanding is useless.
You can lead a horse to water............
http://www.mohomeenergyaudits.com
New Guest
Thanks for your help guys. The problem actually was the green and yellow wires being switched! I watched him fix it; the fan on now works like it's suppose to. I'm still trying to figure out how I never had this problem with the old furnace... Anyway, thanks again!
Professional Member*
Uh, yea....some of us would like to know how that worked as well
Training is important!
Practical Training is a must!
Professional Member*
Are you still doubting?Uh, yea....some of us would like to know how that worked as well
Maybe the yellow wire never went to the where we assume it went to, maybe it just landed on the thing "G" usually controls. Maybe.
Last edited by Milk man; 09-14-2011 at 11:04 PM. Reason: I'm I within the rules yet? :)
Beware of advice given by some guy on the Internet.
Professional Member*
Thanks for the update.
Beware of advice given by some guy on the Internet.
Professional Member*
I suppose that could have happened. But if the Y and G wires were connected properly to everything else and only switched at the stat, there would be other issues. And, I don't see how the system could work properly before if either the Y or the G controls were not wired.
Training is important!
Practical Training is a must!
Professional Member*
As long as the furnace gets +24v on the G and/or Y terminal the blower will run. If Y and G were backwards at the stat the system will still work as long as the condenser/furnace both had 24v.
Professional Member*
For me, around here the learning never stops!
Thanks for the update. I learned something new today. Now I can call it a day.
It's not rocket-science...
It's electromechanical thermodynamic engineering
Professional Member*
If it is a variable speed blower, yes. Most psc motor furnaces, the Y terminal is just there as a connection spot and not connected to anything in the furnace. We were not told anything about the furnace that I recall reading.
Training is important!
Practical Training is a must!
God Speed, Jim. We'll miss you - 2-26-23
Most newer PSC blower furnaces will run the blower if thy receive 24 volts on the Y, weather or not the G has 24 volts.
All the Affinity PSC blower models do.
Professional Member*
Ahhh, good to know.
Training is important!
Practical Training is a must!
Professional Member*
That would be correct, and the G usually operates the fan on speed.
__________________________________________________ _______________________
“Experience is a hard teacher because she gives the test first, the lesson afterwards" ~ Vernon Law
"It's what you learn after you know it all that counts." ~ John Wooden
"When the teachers become unteachable we're all in trouble" ~ Mr. Bill
"Remember "Pro" is only a name, it's not always a mindset determined to do everything correctly" ~ Mr. Bill
Professional Member*
On my system G runs the fan at heat speed, Y runs the fan at cool speed. G input is ignored when the furnace gets the Y command.
Posting Permissions