Seeing an ‘FA’ error code flash across your Whirlpool dishwasher’s display can be a bit perplexing, but don’t worry, it’s a common indicator that points directly to an issue with its Optical Water Indicator, also known as the Turbidity Sensor. This little sensor is crucial for your dishwasher to determine how dirty the wash water is, ensuring proper cleaning cycles. When it’s not reading correctly, your Whirlpool dishwasher gets confused and signals for help with the FA code.
Understanding the FA Error Code
The FA error specifically indicates a problem with your Whirlpool dishwasher’s ability to sense the water’s clarity. This sensor monitors the level of particles in the wash water, allowing the machine to adjust cycle duration and water usage for optimal cleaning. If the sensor is obstructed or malfunctioning, your dishwasher cannot perform this vital assessment, potentially leading to incomplete cleaning or extended cycle times.
Typical Faults Leading to an FA Code
- Accumulation of dirt, food particles, or mineral residue on the Turbidity Sensor (OWI) lens.
- Excessive detergent usage leading to over-foaming, which can obstruct the sensor’s view and give false readings.
- A faulty or failing Optical Water Indicator (Turbidity Sensor) itself, unable to transmit correct data to the dishwasher’s control board.
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Your Step-by-Step Guide to Resolving the FA Error
- Disconnect Power: Always begin by unplugging your Whirlpool dishwasher from its power source or shutting off the circuit breaker. Safety first!
- Locate the Sensor: The Turbidity Sensor (OWI) is typically located at the bottom of the dishwasher tub, often near the sump or filter assembly. You might need to remove the lower rack, spray arm, and filter screen to gain proper access.
- Inspect and Clean the Sensor: Carefully remove the sensor (consult your owner’s manual or a service diagram for specific instructions if needed). Gently wipe the sensor lens with a soft cloth and a mild non-abrasive cleaner. Make sure to remove any visible dirt, grease, or mineral deposits that could be affecting its operation.
- Check for Excessive Foaming: After cleaning, consider if you’ve been using too much detergent. Excessive suds can significantly interfere with the sensor’s readings. Try reducing the amount of detergent or switching to a brand specifically designed for high-efficiency dishwashers.
- Reassemble and Test: Reinstall the Turbidity Sensor (OWI), reassemble any removed components, and restore power to the dishwasher. Run a short cycle to see if the FA error clears.
- Consider Sensor Replacement: If the error persists after thorough cleaning and adjusting detergent usage, the Turbidity Sensor (OWI) itself may be defective. In this scenario, replacement is the most likely and effective solution to restore your Whirlpool dishwasher’s full functionality.
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