The control board for your HVAC plays a crucial role in the operation of your air conditioner. If the board goes bad, then the AC may not be able to run. The control board has a lot of wires connected to it since the board controls many parts. The control board is connected to the condenser outside and the air handler indoors. Here are some things that might go wrong with the control board and the AC repairs you might need to have done. 

A Malfunctioning Thermostat Can Affect The Board

The thermostat is wired to the control board. When the thermostat is ready for the AC to kick on or off, it sends a signal to the control board and the control board sends the signal to the blower and condenser. If the thermostat isn't working, the signal might be erratic or it might not get sent to the control board at all.

The AC repair for this problem is to have the technician repair or replace the thermostat so the signal can be sent to the control board to start up the AC and shut it down when the desired temperature is reached.

Wiring To Or From The Control Board Could Be Bad

If wiring is loose or if a wire was damaged the signal from the thermostat may not make it to the thermostat or the signal from the control board may not make it to the part that needs to start up. When the AC repair technician troubleshoots the problem, they'll check the wiring if needed to look for wires that need to be tightened at the connections or replaced with new wires.

Bad wires could be a potential problem in the condenser if mice get inside the cage over the winter. Mice might gnaw on the insulation or urinate on the wiring connections and cause interference with the control board signal.

Parts Might Go Bad On The Control Board

The control board in your HVAC is covered in many small electronic parts. These might fail due to old age, power surges, or an electrical short. If an electronic part goes bad, the thermostat signal may not be able to pass through it.

The AC repair technician may test the power going into the control board and coming out. If the power goes in but doesn't come out, there is probably a problem with the board. The solution is to replace the entire control board. This is careful work due to the many wires connected to the board. They all have to be put on the new board in the same way they came off the old board.

Contact a company like Home Heating Service, Inc. to learn more about A/C repairs.