Quote:
Originally Posted by MR.M
if you know you have 12 volts to the board , and for sure the T-stat is calling for heat ,you can jump the t-stat wire at the furnace and still nothing than a new board is needed . I'm assuming you have a surburban based on no outside access. you'll have to access behind the furnace and pull it out for service
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Yes, it is a surburban. I don't know for 100% certain there is 12 volts to the board, I did not have a way to check it. It definitely acts like it has no power because no fan comes on, no sounds from it trying to ignite or anything.
I did not try jumping out the thermostat wires yet. Its really difficult to get at it where its located. I'll likely need to pull it out. Is there an on/off switch on these units anywhere that could have never gotten switch on?