lennox g12q3e-82c-6

philthyphil

Hello all, I have a lennox g12q3e -82c-6. I mis wired the low voltage wiring and don't have the schematic to see where the yellow wire from the low voltage transformer goes. There is a connector with 4 wires going to it. 2 yellow and 2 green wires. I do not know if the low voltage goes to this or not. I cannot remember where it goes. I should have took pictures or video before I started. If any one could help please let me know.

GW

Can you identify the purpose or the destination of all 4 wires? It probably goes to safety circuits or thermostat. Gotta be basic that’s an old unit

So you have another 3 wires that you do or don’t know what to do with?

DZoro

Take a picture of the furnace, and post it. I don't remember if that furnace had the "heater" in the fan/limit control.

ch4man

thats typically a common wire.

why did you unwire it only to miswire it?

GW

Diagram

John Mills_5

That's a relic. Check the heat exchanger carefully. They aren't known as Duracrack heat exchangers for nothing! Oh, Lennox calls them Duracurve but techs find the former more common in old age.