Amana F6E3 Error Code — What It Means
The F6E3 error code on Amana dishwashers indicates that the machine has detected foam or suds in the tub. This happens when the dishwasher’s sensing system picks up excessive sudsing, typically from using the wrong type of detergent, adding too much detergent, or leaving the rinse-aid dispenser cap off after refilling. Amana also references this code in relation to voltage sensing and power supply issues, so in rare cases the control board may be flagging an electrical abnormality rather than a true suds problem.
In the vast majority of service calls, F6E3 is a detergent-use issue rather than a mechanical or electrical fault. The dishwasher cannot operate normally when foam is present, so the machine halts and displays the code to prevent damage to the wash motor and pump.
Common Causes
- Wrong detergent type Using laundry detergent, hand soap, or any non-dishwasher detergent will create excessive suds and trigger the F6E3 code.
- Too much dishwasher detergent Overloading the dispenser or using more than the manufacturer recommends floods the tub with foam.
- Missing rinse-aid cap Forgetting to reinstall the rinse-aid dispenser cap after refilling allows rinse aid to pour continuously into the tub, creating suds.
- Residual soap from previous loads If a previous cycle used the wrong detergent, suds can linger in the sump and recirculate in the next wash.
- Control voltage sensing error In rare cases, the main control board may report F6E3 due to an internal power-supply or voltage-sensing fault, even when no suds are present.
Step-by-Step Fix
- Open the door and inspect the tub for visible foam or suds in the bottom, around the filter, or in the sump area.
- Check what detergent was used in the last cycle and confirm that the rinse-aid dispenser cap is securely in place.
- Remove as much foam as possible by scooping it out with a plastic cup or sponge, then wipe down the tub and filter housing.
- Add 2 to 3 tablespoons of vegetable cooking oil directly into the tub to break down the remaining suds.
- Run a full wash cycle with no detergent and no dishes to purge the foam and rinse-aid residue from the system.
- Run a second full cycle with the correct dishwasher detergent (and still no dishes) to flush any lingering oils or suds from the pump and spray arms.
- If the F6E3 code returns after both cycles, verify line voltage at the outlet and inspect the main control board and associated wiring for any signs of corrosion or loose connections related to voltage sensing.
Parts Often Needed
| Part | Notes |
|---|---|
| Main control board (electronic control) | Amazon | Required only if the code persists after suds correction and diagnostics confirm a control-side voltage sensing or power supply fault. |
| Rinse-aid dispenser cap | Amazon | Order a replacement if the original cap is missing or damaged, allowing rinse aid to leak continuously. |
When to Call a Pro
Most F6E3 faults resolve with the suds-clearing procedure and correct detergent use. Call a technician if the code reappears after two full purge cycles with no foam visible, or if you are not comfortable working with electrical components. A pro will measure control-board voltages, inspect the wiring harness for shorts, and verify that the sensing circuit is functioning correctly. Persistent F6E3 codes without suds typically point to a failed main control board or a power-supply issue that requires diagnostic equipment and safe handling of live circuits.