I have a 1994 Conquest furnace with a Honeywell circuit board. The exhust fan will run and then the burners will start but when the circuit board "clicks", the blower won't run. I noticed on the back of the board a burned spot at one of the solder points. I referanced the board number, ST9101A 1014, and it showed it being replaced by ST9120U 1003. It looked good except my board is a nine pin and the replacement is a six pin. Any ideas?

Here is a diagram for your old board


http://customer.honeywell.com/techli...it/69-0686.pdf


Here is a diagram of the new replacement board. NOTE adapter is included I believe.


http://customer.honeywell.com/techli...it/69-0644.pdf

Looks like a piece of cake if you read and take your time doing the conversion.