[odinthedog]

Does anyone know where I could obtain wiring schematic for an old Rheem furnace built in 1976?

[hvac1000]

Here is a good link explaining how to wire the fan control.


How to Install and Wire the Honeywell L4046B combination Furnace Fan Limit Switch Control: a guide to the fan limit switch installation and electrical connections - Honeywell L4064B Combination Fan and Limit Switch

[mygirlsdad77]

Let us know what you are trying to do and we may be able help. Explain the fan control. What is the problem(blower motor won't come on?) If you are just looking for wiring schematic, 1000 answered it. If you are looking for help otherwise, please let us know.

[odinthedog]

Thanks for the replies. I am attempting to replace a faulty fan control center on an old Rheem gas fired/forced air furnace. The replacement part White-Rodgers 90-112 came with a schematic, but I am unsure how the leads connect to my furnace. I tried matching color for color but that didn't work.

I accidentally fried the 90-112 this afternoon, so I ordered another one. I will probably just hire a professional to wire it up for me. Should've done that in the first place. Thankfully wifey is patient.

Thanks again.

[odinthedog]

Well, the parts guys at Keith Specialty emailed me back and said, Hey, why don't you check inside the blower door, there should be a schematic there.

Well, needless to say I found a schematic.

I'll just go lay down now.

Thanks for a wonderful forum. I'll have to check out the other threads.

Keith Specialty Store
Phone: 800-705-8838
FAX: 724-397-2228
Keithspecialty.com

[mygirlsdad77]

Sorry forgot to mention that there would be a schematic on bottom door of funace, I just assumed it wasn't there ( or would be illegable)judging from the age of the furnace.