Dublin heating and cooling: flame sensor and contactor repairs

The York burner could not stay on

The flame sensor was sending an unreliable signal. Cleaning improved it only partly, so we replaced it with a model-matched sensor. We checked gas flow, burner ignition and the furnace safety controls, then ran several full heating cycles. The repair followed the ignition sequence to the sensor rather than replacing the control board.

The Goodman needed a contactor

The failed contactor kept this Goodman air conditioner from working. We replaced it. The photos show the outdoor electrical compartment and the removed contactor beside the unit. A capacitor appears in the photographs too, but the recorded repair was a contactor replacement.

An AC addition or replacement needs a permit

Dublin specifically lists adding or replacing an air conditioner among projects requiring a permit. Applications go through the Citizen Self-Service portal. The City separates its residential guidance from commercial and multifamily guidance, so use the instructions for the property type when planning equipment work.

City of Dublin building permits · checked October 28, 2026