Moderate

Fisher & Paykel · Dishwashers

Diverter Valve Fault

Quick Answer

Error code FB on your Fisher & Paykel Dishwashers means: Diverter Valve Fault. This is usually fixable — see the step-by-step guide below.

Affected Models

Applies to all models

Likely Causes

Diverter valve motor cannot move the valve to the correct position for directing water to upper or lower spray arms
Diverter valve is jammed with food particles or grease buildup
Diverter position sensor is not accurately reporting the valve position to the control board
Wiring to the diverter motor has a broken connection

How to Fix It

Remove the drawer filter and check the diverter area for food debris that may be jamming the valve

Clean the diverter valve mechanism thoroughly with warm soapy water and a small brush

Try moving the diverter manually to check if it rotates freely between positions

Test the diverter motor for continuity with a multimeter if the valve is free but does not actuate

Replace the diverter motor or the entire diverter assembly if the motor has failed or the valve is damaged

Pro Tip

This fix requires some technical knowledge. If you're unsure about any step, consider contacting support or a qualified technician.

Parts You May Need

Fisher & Paykel diverter motor (model-specific)

Diverter valve assembly (if mechanism is damaged)

Cleaning brush for sump area

Related Error Codes

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