Heater had worked well until last night.
Woke up and heater not working.
Thermostat not respond/react to temperature adjustment.
Power down main breaker at least half hour – no change.
So basically no flame/heat and no blower.
Unpluged one contact from limit sensor and a moment later the blower motor kicks on.
Still no heat. :madhell:
Reconnect limit sensor and turn power on – No heat/fan.. 😡
Changed thermostat – no response.
Model specifics: Comfortmaker model ntg3075hfa5 serial L0037 68135
Can’t find manual.
What is the most logical sequence to diagnose/fix this? :confused: