| Suburban Circuit Board: $194.65!!!
NT-30 SP circuit board went on the fritz.
The issue was only (3) wires going to the board, while the diagram shows (4) wires.
Factory technician says the spark cable to the electrode is the 4th wire and performs 2 functions; they are:
a) provide high vlotage to the igniter,
and
b) SENSE THE FLAME!
Not wishing to gamble on a new circuit board that may or may not have the 1 wire 2 function capability, I asked the Delaware Camping Center in Georgetown to fix the furnace.
The bill came to $437.78
The circuit board is Suburban part # 62345
Would have been cheaper to buy a new furnace.
Dick
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