After few visits to my home by various technicians who attempted to address heater issues(unsuccessfully) I finally got Josh who identified the issue within maybe 1/2 hour.he ordered parts, came back within a week and changed parts,and he coordinated visit with electrician to relocate outdoor sensor. So far so good! Josh is the best! Electricians were the best too,explained everything, left for a bit and came back just make sure everything was working! Thanks you Josh!