Hello Forum thank in advance for any help I have a Carrier 58 PAV Upflow and today I turned on the heat for he first time this season and the blower works but no heat. The unit worked last winter and the AC still works fine.
I checked the control board and receives continuous blinking red light. The hot surface ignitor is clean and I replaced it last year, the flame sensor is clean and I replace the filter each month. Any help would be greatly appreciated. Thanks