Air Conditioner Heat Pump Contactor Relay Switch

Air conditioner contactors and relays.

Air conditioner heat pump contactor relay switch.

Packard c140a 1 pole contactor coil contactor 40 amp 24v here is a single pole 120 volt contactor on a residential heat pump air conditioner. A transformer usually 24 volts energizes the contactor which has a coil built into it. Air conditioner heat pump contactor relay switch. When you turn off your ac the contactor goes up blocking power.

At the bottom is where the power comes in from a breaker or disconnect labeled l1 and l2. If the heat pump turns on when you want cool air but not for heat this is likely the cause. See compressor disconnect switch. The contactor is the part of the air conditioner that controls the flow of electricity into the unit.

Kung fu maintenance shows ac relay air conditioner contactor not pulling in five most often causes 1 bad thermostat 2 bad wiring 3 bad contactor 4 bad tr. It will also need to be replaced by a technician. By the same token every time you turn on the air conditioner the contactor is lowered allowing electricity to power the system. Relays contactors are nothing more than a switch.

In heating and cooling these relay contactors are used to turn on high voltage components such as motors compressors and other high voltage components. At the top the t1 an t2 is where the units components get power when the contactor closes. When a thermostat reaches a set temperature. A c and heat pump systems use a contactor relay circled at left because the little 12 24v wall thermostat circuit and switches are not capable of handling the higher voltage used by the compressor condenser motors.

Wondering how you can check it. This article discusses control relay switch chattering or rapid repeated clicking noises their cause meaning and repair. Chattering relay switch noise causes repairs for clicking chattering relay switches in hvac pump other controls. We offer the best quality hvac contactors and relays you can find.

Is your air conditioner not turning on or not blowing cold air. Heating and cooling equipment require switching devices that are heavy duty and can operate for thousands of cycles. Your air conditioner s contactor and capacitor work together to help power your air conditioner s fan and compressor whenever your thermostat calls for cool the capacitor and contactor in your heat pump work the same way. Do you think your air conditioner contactor might be bad.

Here you will find our selection of top quality contactors and relays. The contactor is the switch that receives a low voltage usually 24v signal from your furnace to turn on. As the name suggests the reversing valve allows the heat pump to work as both a heater and an air conditioner by reversing the direction of the refrigerant.