8531 /Burner Issue UPDATE--Photos ( Fixed!)
With the furnace running, where do you put the pos and neg leads of the meter? Or can you do it at the Tstat inside with the furnace on? I want the 12v to the board, not the voltages the board puts...
Forum Discussion
enblethen wrote:
Different places.
Easiest from your photo, is from either side of the circuit breaker to ground. Metal housing should work.
Better place is on left side not shown in photo, is incoming power. Not the blue wires as they are thermostat leads. Should be red and yellow leads.
See page 9 figure 6
manual
Thanks, but that link is for a different furnace. I have the manual for mine with wiring diagram. If I unplug the input to the board to get at the ends of the wires (also yellow and red), the furnace can't run and with it plugged in I can't get at the ends of the wires. The board is in a slot I can't get at with the meter leads. Not sure I can pull the board out enough while the furnace is running.
Is the circuit breaker the one top-left?
