How to Replace the Main Control Board in a Whirlpool Double Oven

troubleshootingCooking, Oven Repair

It’s almost bearable if one of the ovens in a double oven is not working but it is simply wrong when both have failed. The fact that both ovens are not working should provide a clue as to which component needs to be replaced.
If you already have the part, and depending on your skill level, you’ll have your Whirlpool Double Oven ready to bake whatever epicurean delight you have planned for this evening.

Tool Needed:

  • Flathead Screwdriver
  • Needle Nose Pliers
  • Philips Head Screwdriver

Safety First

Unplug the oven from its power supply before beginning any work.

Symptom

There are six possible reasons why your double oven won’t heat up and you’ve already determined the first five are okay:
  • The bake and broil heating elements don’t work but test positive for continuity, which proves there is a continuous electrical path.
  • The power source is delivering 240 volts of alternating current.
  • The bake and broil heating element connection wires show no signs of burn marks or damage.
  • Testing for continuity, the thermal fuse shows a continuous electrical path is present.
If the power supply, the heating elements, thermostat, fuse, and heat sensor are operating correctly, it’s a strong possiblity that the main control board has failed and will need to be replaced.
If you’ve decided to install the part yourself, you’ve come to the right place. Simply follow along with this somewhat lengthy (approximately a 10-minute read) guide so you can get back to doing what you do best.
Since you know that the thermal fuse is functioning properly, this one symptom should tell you that the control board is getting power but is incapable of operating your oven. The first thing you will need to do is remove the lower oven door.

How to Remove the Oven Door

  • Open the lower oven door and find the hinges.
  • Release each hinge by pulling back on the hinge locks.
  • Position the door until it is about 45 degrees to the floor, lift it off its hinges, and set aside. Be aware that oven doors are heavy.

How to Remove the Cosmetic Molding

  • Remove the two bottom screws that hold the molding in place.
  • Open the top door, locate and remove two more screws that hold the molding.
  • Remove the two screws that hold the bottom decorative molding in position.
  • Carefully remove all molding and set aside.
Pro Tip: Place all screws you remove in a small jar so they don’t wander off.

How to Access the Main Control Board

  • Remove the four mounting screws located on the oven frame.
  • Pull the oven out slightly, about 3-4 inches, to gain access to the two control board mounting screws, two on the right side and two on the left.
  • Open the top oven door and grab the control board on each side. Pull it toward yourself and then pull up. You now have access to the control board with its menagerie of wire harnesses you will need to remove. But wait, don’t remove those wires just yet. Still, a few more steps before we remove those wires.

How to Remove the Old Control Board

  • Carefully disconnect the ribbon cable that connects the touchpad to the main control board. This is the ribbon that communicates to the other components anything that you are commanding your oven to do. So be careful not to damage any pins as you remove it. Squeeze inward on the outer edges of the cable and pull the connection away from the board.
  • Remove four Philips screws that hold the board in position on the touchpad bracket. And Don’t forget to disconnect the grounding wire.
  • Place the touchpad on a flat workable surface.

How to Install the New Control Board

  • Line up the new control board with the screw holes on the touchpad.
  • Thread the ribbon cable through a slot located on the control board and gently push the cable into its accompanying tabs.
  • Reinstall the four Philips screws that hold the control board to the touchpad frame.
Although each wire harness is keyed to fit only one connection on the main board, it is wise to snap a picture of the old control board as there are at least two spade connectors that look alike and you’re going to want to make sure you get them connected where they belong.
  • Remove the wire harnesses from the old main control board.
  • When disconnecting wire harnesses from any component, grip the connector gently and pull. Never remove the connectors by pulling on the wires as this may cause a wire to come loose in the connection.
  • The black connectors indicate a tighter fit and you may need a set of pliers to provide additional leverage to help release the connection.
  • After removing all connections, remove the sub control board located on the left end of the old control board. The new control board does not come equipped with one.
  • Find the clip that holds the sub control board in place. Depress the clip and pull the board up to remove.
  • Now, install the sub-board on the new control board. Depress the clip, slide the board into place and release the clip to secure. That’s all there is to it.

How to Install Wire Harnesses to the New Control Board

  • One technique used by technicians is to reconnect the ground wire first to help prevent an accidental dropping of the new control board.
  • Reconnect the spade connections first. Here is where your picture should help. There are other techniques you could use. The main thing is that you ensure that these two connections return to the tabs they were designed for.
  • Continue by connecting all other wire harnesses which are keyed to connect in one connection only.
  • Another technique is to simply work in reverse of the way you removed the connections.
  • Also, it may be possible to use the top oven cover to assist you in balancing the control board.

How to Replace the New Control Panel

  • The control panel has notched openings that slide over tabs located on the front of your oven.
  • Once you feel the panel is notched in. push it down and forward slightly and feel it click into place.
  • Secure in place with the Philips screws. No need to overtighten. Overtightening will sometimes strip or break softer screws.

Final Steps

  • Push the oven back in place and secure with four Philips mounting screws. You should use a drill gun on these screws so that you provide additional torque. But still, do not overtighten.
  • Reinstall the bottom decorative molding.
  • Reinstall the frame molding.
  • Reinstall the lower oven door. Place the door hinges in the hinge opening. Lift up and open to a 90-degree position. Slide the hinge covers over the hinges.
  • Close the door.
  • Reconnect the power
  • Test the touchpad functions.
You should be ready to cook once again. However, if you are having any difficulty with this repair you may want to contact a professional appliance repair company.