1.3Accessing the Control Box Electronics
(Interface Board, Transformer, Contactor, Breakers, Transformer and Relay)
1.Unplug all power cords.
2.Open front door of cabinet and remove the two bolts holding down the drain nipple extension bracket.
3.Remove the three screws from bottom of control box access panel.
4.Remove the four screws in the corner of rocker switch access panel. Twist the rocker panel and push through the access panel opening.
5.Unplug the Thermatron connector and remove access panel and set aside.
1.4Replace Thermatron Board
1.Unplug all power cords. Perform Procedure 1.3, Steps
2.Remove all wiring from the terminals of the Thermatron board, ensuring that each wire is marked for reattachment.
3.Remove the nuts from each corner of the Thermatron temperature control board and slide the board from the studs. Ensure that standoffs remain in place on studs, prior to installing new board. Install the new board by reversing the previous procedures. Ensure that wiring and wire harnesses are connected to the proper terminals.
1.5Replace Transformer
1.Unplug all power cords. Perform Procedure 1.3, Steps
2.Remove all wiring from the terminals of the transformer to be replaced.
3.Remove the screws that secure the transformer to the component box.
4.Install the new transformer by reversing the preceding procedures. Make sure you reconnect the wiring to the proper terminals and the harnesses to the correct connectors.