flyinghighfurn
Oct 19, 2012, 06:22 PM
My furnace flame goes out at times. Sometimes it won't light, other times it lights and quits after a few seconds or almost a minute. Then it might run for many minutes. One time I got a steady LED indicator light, controller needs replacement. Then it works again.
I have the White Rogers 50A50-471 controller. I can take the -473 controller out of a spare similar, but smaller, furnace. Are they directly interchangeable?
Also, I tried measuring the DC voltage out of the step down transformer but I can't get the meter to indicate any voltage. A quick tap across the terminals (with output leads removed) produced a spark. If I pull off an output lead while the furnace is running it immediately shuts down, so it must be supplying voltage.
Sorry for long question, cold in MN! Thanks!
I have the White Rogers 50A50-471 controller. I can take the -473 controller out of a spare similar, but smaller, furnace. Are they directly interchangeable?
Also, I tried measuring the DC voltage out of the step down transformer but I can't get the meter to indicate any voltage. A quick tap across the terminals (with output leads removed) produced a spark. If I pull off an output lead while the furnace is running it immediately shuts down, so it must be supplying voltage.
Sorry for long question, cold in MN! Thanks!