Before summer you must prepare your central air conditioner. What if your ac unit doesn't want cooling? First of all, you don’t need to panic. Probably, the problem could be in contactor. The AC control board sends a low voltage signal to the contactor. When the contactor receives the signal from the control board, it closes the circuit, sending voltage to the condensing unit components. If the contactor is defective, it will not provide voltage to the condensing unit. To determine if the contactor is at fault, use a multimeter to test the contactor for continuity. If the contactor does not have continuity, replace it. Today we will change contactor in Viking 186B. We have a simple guide, which helps you to do it at home.
- Shut off the power to the air conditioner and the furnace/air handler
- Verify that the power is off with a multimeter
- Mark the wires and their location on the contactor
- Remove the wires from the contactor
- Remove the mounting screws for the contactor
- Mount the replacement contactor
- Reconnect the wires & ensure that the wire connections are tight
- Turn the power back on to the unit and the furnace/air handler
- Complete your air conditioner contactor replacement by observing a complete cooling cycle
Make some tests. If it still doesn’t work, you can contact our customer support team and arrange an appointment at the convenient time.
