30OCT2022 Jason B Arrived for new customer no heat. Spoke with homeowner about the issue. I was messing with the thermostat and it sparked. Inspected furnace found 3 amp fuse blown. Replaced fuse and cycled system. Homeowner had further questions about airflow, however it’s still very wet underneath the trailer we will reschedule appointment to take a look. I will have office call and schedule appointment for Thursday.