Suburban Furnace Problem
So I'm doing battle again with my furnace. Suburban NT34SP. The unit has worked well for the last 16+ years, well except for that whole motor replacement thing 2 years ago. We're in bed and I'm th...
Forum Discussion
sandpaper600 wrote:
Something is causing the relay to kick out repeatedly instead of hanging in there and passing the voltage to the motor, I just don't know what. Too large of a load for the relay rating?
I'm leaning towards wrong board at this point.
If you find that’s the case, you could always get a 12V automotive relay. Power the relay coil with the board’s fan output and use a direct fused 12V source to switch to the fan. You could even try that temporarily just to see if it operates if it seems to kludgy for a permanent fix.
It’s unlikely but possible your replacement fan motor is failing or drawing too much power. Try running the motor with an ammeter in series to see how much it’s taking.
