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
Are you positive that you have the Fan motor wires connected to the correct spades on the new module board? Your model board should have the built in FAN RELAY. When you close the contac wires to start the furnace, the relay on the module board closes and outputs 12 volt positive to the Fan motor. The fan motor starts to run and the sail switch closes and starts the Ignition sequence.
1. You may have the wrong module board. Does the Malfunction happen with the original board installed?
2. You have the motor 12 volt pos wire on the wrong spade of the module board
3. You have lost the ground for the furnace, hence the clicking. Doug
1. You may have the wrong module board. Does the Malfunction happen with the original board installed?
2. You have the motor 12 volt pos wire on the wrong spade of the module board
3. You have lost the ground for the furnace, hence the clicking. Doug
