Control board-on/off button wiring harness De Dietrich JJJ008612210

The control board-on/off button wiring harness connects the main control board to the on/off switch of your boiler or burner. This harness ensures that the power control functions correctly, allowing you to safely start and stop your heating system. It is an essential part for maintaining user-friendly operation and is commonly needed during control board replacements or switch repairs.