Applies to:

Replacing the AIF Multi-Tab Transformer

To avoid electrical shock or property damage, move the power switch to OFF and disconnect power.

Lower the control board.
Mark the location of the wires, and then disconnect.
Use a 3/8 inch nut-driver to remove the nuts that secure the transformer to the shroud.
Lift up on the transformer and remove it from the studs.
Place the new transformer on to the studs, and then use a 3/8 inch nut-driver to secure in place.
Reconnect the wires.
Install the control board.