Hi all,

I have a Bryant furnace, Plus 90i Evolution (355AAV060100) that won't start and gives error code 42 (checked by flashes and on service section on Infinity thermostat). The unit is mounted vertically in the basement, age unknown but thought to be only a couple of years. Was running fine until yesterday morning.

From the error code I gather its inducer not starting. The blower comes on as expected but inducer doesn't start. I've checked the inlet and outlet pipes which appear free from obstructions. The spindle of the inducer turns freely by hand. Wiring block to the inducer and connections appear fully seated.

Any suggestions much appreciated,