Is the blue wire the C wire?
The Rh wire connects to the heating system. This wire may be red without an “H” attached, in some cases. Blue. The blue wire on the thermostat is the Common or “C” wire.
Is there an orange wire on the new motor?
The problem is there is an extra setting (orange wire) on the old motor that isn’t there on the new one (medium low). – user1463809 Nov 1 ’15 at 3:50 Probably not all the speeds were used, you’ll have to check where they connect to the control board. Most likely, one or two go to a PARK terminal, which means they’re not used.
What are the wires on an old furnace blower?
Check the diagram on the old motor, to figure out which wires are which. From what I can see, looks like on the old motor: Black = High speed, Yellow = Medium high, Orange = Medium Low, Red = Low speed. – Tester101 Nov 1 ’15 at 3:43 Yes, and that is what i had done.
What is the Orange Wire on my furnace?
But there’s a chance the orange wire is actually the common wire and the yellow is one of the two med settings (med hi or med lo). That turned out to be the case in my unit. On my new motor, I had black, red, blue, and yellow. On the old one, it had the extra orange as well.
The problem is there is an extra setting (orange wire) on the old motor that isn’t there on the new one (medium low). – user1463809 Nov 1 ’15 at 3:50 Probably not all the speeds were used, you’ll have to check where they connect to the control board. Most likely, one or two go to a PARK terminal, which means they’re not used.
Check the diagram on the old motor, to figure out which wires are which. From what I can see, looks like on the old motor: Black = High speed, Yellow = Medium high, Orange = Medium Low, Red = Low speed. – Tester101 Nov 1 ’15 at 3:43 Yes, and that is what i had done.
But there’s a chance the orange wire is actually the common wire and the yellow is one of the two med settings (med hi or med lo). That turned out to be the case in my unit. On my new motor, I had black, red, blue, and yellow. On the old one, it had the extra orange as well.