Fleck Unstable Control Power

Display is dim, flickering, or resets randomly.

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Failing transformer, loose low-voltage connection, internal control board power supply issue, electrical noise on circuit

Safety first: Unplug power before handling wiring or the control board.

Secure connections: Check that the low-voltage plug from the transformer is tight in the control and that there are no frayed wires.
Test transformer: Measure the AC voltage output under load. Replace the transformer if voltage is unstable.
Use dedicated circuit: Avoid sharing the outlet with large motors or appliances that cause voltage dips.
Replace control board: If power is stable but the display remains erratic, replace the Fleck control board.

Medium 3/5

Fleck SXT/XTR Control Board

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