Furnace Repair For A Bad Control Board That Keeps Your Furnace From Starting
Posted on: 25 July 2023
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If your furnace won't start, the furnace repair technician has to consider a number of things. They might discover that the control panel is bad after troubleshooting the problem. The control panel receives power and distributes it to the parts needed to start and run your furnace.
If the control panel dies, your furnace may not work at all. If the panel malfunctions, the furnace may operate erratically. In either case, the problem has to be fixed so your home has heat. Here's how to know if the control board is bad and how it's replaced.
How To Determine The Control Board Is Bad
Since a few parts can cause your furnace to not start, the furnace repair technician may start by checking different parts with a multimeter to see if they are good or bad. When checking the control board, the furnace repair technician checks that the control board has power going into it.
They can also check the indicator light on the control board to see if it's blinking. A blinking light indicates a problem and if the board has power going into it, that could mean the problem is with the board. The light will probably blink using a specific code that tells the repair person the nature of the problem. If the board is bad, it has to be replaced.
How A Faulty Control Board Is Replaced
Before starting work on the furnace, the repair technician might reset the furnace just to make sure the board has a problem. If resetting doesn't help, it's time to remove the bad board. The control board is usually toward the bottom of the furnace behind the bottom panel. The panel needs to come off to reach the board. The upper panel may need to come off before the lower panel can be removed.
Once the panel is out of the way, the control board should be visible and easy to reach. Replacing the board is easy, but the hard part is replacing the wires in the right place. The old board can be unscrewed and pulled out so the new board can be mounted with the screws.
Then the furnace repair technician might take one wire off at a time from the old board and attach it to the new board before moving to the next wire. This allows the repair technician to work carefully and attach the new wires to the right locations. Once all the wires have been transferred to the new board, the furnace has to be started to test its operation and make sure the problem has been solved.
Contact a local company to learn more about furnace repair.