The exhaust fan and range hood lights are powered by the control board. If the electronic control board doesn't work, replace it. The sentry system is operated by the control board. The electronic control board needs to be replaced if it isn't operating correctly.
Follow these steps to fix your issue:
Disconnect electrical power.
The electrical power to the range hood should be disconnected from the house circuit breaker. Put a towel on the counter or table where you will place the range hood to complete the repair.
Remove the filters and the bottom panel.
The air filters need to be pulled out of the range hood. The screws that hold the bottom panel to the range hood frame need to be removed. If you remove the final screw, you should support the bottom panel with your hand.
Remove the side panels.
There are light sockets on the side panels. Pull the front of the side panels inward to remove the locking tabs.
Pull the range hood from the cabinet.
The power supply wiring must be disconnected. If you want the power supply wires to slide out of the cabinet, you need to loosen the screws on the power supply wire. The middle mounting screw has to be removed. The 4 corners have mounting screws. The range hood needs to be pulled forward to release the corner screw. Carefully pull the range hood down and set it upside down. The range hood is heavy It might be necessary for someone to help you pull it down and set it on the work surface.
Remove the electronic control board.
The electronic control board has mounting screws. Remove the electronic control board from the control panel.
Install the new electronic control board.
The wires need to be connected to the electronic control board. Attach the mounting holes for the new control board to the control panel. Remove the mounting screws.
Reinstall the range hood.
The range hood should be positioned in the cabinet. The power supply wires need to be pushed through the power supply wire clamp. Place the range hood under the cabinet and tighten the screws on the corners. Put the middle mounting screw in. The power supply wire clamp has screws on it.
Reassemble the range hood.
The side panels need to be reinstalled. To get the side panels into the front brackets, push the back end of the side panels into the frame slots. The light sockets need to be plugged back in. Put the bottom panel in place. Place the mounting screws on the bottom panel. The air filters need to be reinstalled.
Restore the electrical power.
To restore electrical power to the range hood, you need to reset the house circuit breaker.
Time required: 45 minutes.
You would need the following tools: Phillips screwdriver, towel, work gloves.
Let's Get It Fixed!
Our virtual experts can diagnose your issue (for free!) and resolve simple problems.