Turns on high amp drawing equipment such as the compressor motor.
Relay switch on outside ac unit.
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Control fans blowers motors up to 1 1 2hp tools and other electrical devices within ratings.
The ac compressor relay is responsible for supplying power to the ac compressor and clutch.
If the contactor in your ac unit fails the compressor can t send out the refrigerant needed.
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Locate the circuit labeled a c unit or.
Ac contactors can wear out and are at the top of the list of common air conditioning service failures.
The relay contains a low voltage coil and a high voltage switch sometimes called contact points when the thermostat switches on a low voltage signal energizes the appropriate relay.
How to reset the outdoor service switch for an air conditioner unit by maxwell payne hunker may earn compensation through affiliate links in this story.
Turns off the system at excessive refrigerant pressure and in some systems at too low pressure.
The relay switch that sends electricity to your air conditioner s compressor is known as a contactor.
Contactors pull electrical contacts apart when power is not needed and close the contacts to power something up.
Without this relay the ac compressor will not have power and the ac system will not function.
Air conditioner heat pump contactor relay switch.
An ac contactor is a 25 mechanical relay that uses low voltage power from the thermostat to switch 220 volt high amperage current to the compressor and condenser fan.
Almost every single electrical system on a car is powered through some kind of switch or electrical relay and the ac system and compressor are no exception.
Over time relays can fail or stick together from electrical currents causing a circuit to stay closed and constantly supply power.
Stuck relay relays in your air conditioner unit help open and close electrical circuits to turn components like a fan on and off.
See contactor relay diagnosis repair air conditioner or heat pump pressure control pressure safety switches.
