What causes a contactor to get stuck?
What causes a contactor to get stuck? Contactors can also become stuck in one position, and this can occur because of dirt getting into the system and along the contactor. A contactor that's stuck in the open position or which can't close completely because it's blocked will stop motors from working. How do you know if your AC contactor is bad? Bad AC Contactor SymptomsThe condenser unit never shuts off. This could be a sign that the contactor has melted, leaving the air conditioner with no means to block electricity.AC hums and won't turn on. AC makes a chattering noise....