Is changing control board a easy task? thanks
To replace the main control board for this unit, you will need to pull the unit out from the wall and disconnect the power. Once the power is disconnected you will then remove the lower cover at the back of the unit. On the right hand side is where the control board should be located. You will need to remove the screws holding it in place and may be necessary to remove the water valve as well. You would then remove the cover over the control board and disconnect wiring and install new board.