This afternoon I returned to Brenans home because the furnace stopped working. Brenan called me while I was at another call and explained the furnace was working after I left but several hours later it stopped working. Upon inspection I found error code 31. This indicates the pressure switch is not proving and will not allow ignition. I tested the draft pulled by the inducing motor and it is not enough to sustain ignition. The inducing motor must be replaced. I have jumped the pressure switch to get the furnace to run for 1 heating cycle to warm the home up. We will return tomorrow to replace the inducing motor. Scheduled to return tomorrow to replace the inducing motor. 50% paid today with the remainder due at time of job completion. 25% restocking fee should the job be cancelled.