Applies to:

Replacing the Transformers

Both the Express Filter transformer and the control transformer are the same part number. These components drop the line voltage to low voltage components such as, control board, Express Filter board and contactors.

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

Checkout

Hinge-down the control panel to access the desired transformer.
Pull the appropriate white connector, either from the Express Filter PC board or from the control PC board.
With the power on, take a voltage reading on the appropriate pins, using the chart and drawing below. If transformer proves faulty, continue with replacement instructions.