What F3 means on your Asko dishwasher (asko dishwasher f3)
An asko dishwasher f3 code is one of the legacy blink-code problems, logged as blink pattern L3 in the DW20.1 service manual. It indicates a thermistor failure: either the temperature sensor circuit is interrupted, or it is reporting a reading above eighty degrees Celsius, both of which the control treats as unreliable data it cannot safely act on. Like F1, this problem gives no on-screen indication on the DW20.1 panel itself and only surfaces in the service menu. Because the control cannot trust the temperature reading, it will not proceed normally with the heated portion of the cycle until the sensor circuit is restored.
Symptoms
The indicators below help confirm the problem on your Asko dishwasher instead of a different issue that mimics it. Your dishwasher might produce one symptom or a handful at once, whether they develop slowly or appear all at once after a power event, a demanding wash or cook, or recent installation.
- The cycle pauses or refuses to advance past the wash phase
- The service menu reports blink pattern L3 when checked
- Wash results vary unpredictably between cycles
- The dishwasher may run unusually hot or unusually cool water depending on the false reading
Common causes
Different underlying problems can surface the same way on your Asko dishwasher, so the causes below run in order of probability. Clearing them one by one separates a quick check on the dishwasher from a repair that genuinely needs trained service and genuine parts.
- Broken thermistor wire — vibration over time has fatigued a wire in the harness running to the sensor
- Failed thermistor — the sensor itself has degraded and no longer reads temperature within range
- Corroded connector — moisture has reached the thermistor plug and increased resistance across the connection
- Control board input problem — the board is not correctly interpreting a good sensor signal
Troubleshooting steps you can try
Work these checks on your Asko dishwasher in the given order first — you may not need a technician at all. Stop wherever you are unsure on the dishwasher, or where live electricity, gas, heat, water, or a sealed part is involved, and let a qualified professional carry on.
- Power the dishwasher off at the breaker for a minute and restart it to rule out a momentary glitch.
- Check that nothing has been spilled or leaked near the wiring at the base of the tub.
- Note whether the problem appears on every cycle or only intermittently, since intermittent problems point to a loose connection.
- Avoid running hot-sensitive loads, such as fine glassware, until the temperature control is confirmed reliable.
Parts a technician may replace
When your Asko dishwasher shows this problem, a technician will inspect, test, or replace the wash thermistor, wiring harness, and control board as needed. The part is pinned down from your dishwasher’s model, serial, and Art. No., and only genuine or trusted-supplier parts go into the dishwasher, so the repair lasts.
When to call a technician
A thermistor failure that returns after a power cycle needs an experienced technician to test the sensor resistance and trace the wiring harness for damage. There is no rush with a Medium-severity problem on your Asko dishwasher, but should F3 keep recurring on the dishwasher once the checks are done, a technician should confirm what is behind it before any component is swapped. Work on your Asko dishwasher is independent of Asko, Gorenje, and Hisense; experienced technicians fit genuine OEM or trusted-supplier parts, and the labor on the dishwasher is covered by a 30-day warranty. When you schedule service for your Asko dishwasher, quote its model, serial, and Art. No. — that way the correct part is matched to the dishwasher beforehand and F3 is put right in as few visits as possible.
Related help and Asko resources
For a F3 that returns on your Asko dishwasher, you can book Asko dishwasher repair, look through our related dishwasher error-code guides, lean on our step-by-step repair guides, schedule service for service, or find your city on our locations page. Full product details for your Asko dishwasher live on the manufacturer’s site at us.asko.com.
