Asko Dishwasher F2 Error: Heating / temp sensor fault
Asko dishwasher F2 error is a common issue reported by Asko appliance owners. What Does Error Code F2 Mean on an Asko Dishwasher? Error code F2 indicates a heating or temperature sensor fault on Asko dishwashers including the D5000, D5100, and DBI665 series. The control board monitors water temperature via an NTC thermistor throughout the […]
No
DIY Fixable
From $150
Typical Repair Cost
45-90 min
Pro Repair Time
Quick Assessment
Answer to continue safely
Is it safe to keep using?
No. Dishes will not be sanitized at the correct temperature and the cycle will not complete. Continuing to run the machine in an F2 fault state wastes water and detergent without cleaning results.
Can I reset the code?
Yes. The code resets with a power cycle, but will return at the heating phase of the next wash if the thermistor or element fault is not resolved.
When to stop immediately?
Stop if you notice: F2 returns consistently at the same point in every cycle after resetting, There is a burning smell or visible discoloration around the sump area.
Symptoms You May Notice
Dishes come out cold or poorly cleaned with residue
Because the wash cycle cannot reach the correct temperature, enzyme and detergent activation is incomplete, leaving grease and food residue on dishes.
Cycle stops mid-wash and F2 appears on the display
The program halts at the heating phase — typically 10–20 minutes into a normal wash — and the fault code is shown on the panel.
Drying performance is significantly reduced
Heated drying depends on the element and thermistor being functional; an F2 fault often also degrades the drying result even if the wash phase partially completes.
Control panel indicator flashes and machine beeps repeatedly
Asko models signal active faults with an audible beep sequence alongside the code display, alerting the user that the cycle has been interrupted.
Possible Causes
Failed NTC thermistor (temperature sensor)
The thermistor resistance has moved outside the expected range, causing the controller to report an invalid temperature and halt the cycle.
Requires ProfessionalBurned-out or scaled heating element
The element has open-circuited due to age or failure, or heavy limescale coating has insulated it to the point where it cannot heat water effectively.
Requires ProfessionalWiring or connector fault on thermistor circuit
A loose or corroded connector on the thermistor harness creates an intermittent open circuit, causing sporadic F2 faults.
DIY PossibleSafe Checks You Can Do
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1
Run a descaling cycle
Add a dishwasher descaling product (such as Asko Descaler or a citric-acid-based alternative) to the detergent dispenser. Select the hottest available cycle — usually Intensive 70°C — and run it empty. This removes limescale from the element that can trigger false F2 readings.
Asko recommends descaling every 3–6 months in hard-water areas.
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2
Inspect and reseat the thermistor connector
Turn off power at the breaker. Remove the lower spray arm and filter basket to access the sump area. Locate the NTC thermistor probe (a small cylindrical sensor clipped to the sump wall). Check that its two-pin connector is fully seated and free of corrosion. Reseat the connector firmly.
Take a photo before disconnecting anything so you can reference the correct orientation.
Tools required -
3
Reset and test
Restore power and run the Normal wash cycle. Monitor the display for the first 20 minutes. If F2 does not reappear and the water feels warm during the cycle, the connector reseat resolved the issue.
You can partially open the door (carefully) during the heat phase to feel for warm steam — a sign the element is working.
When to Call a Professional
Contact a qualified technician if:
- NTC thermistor resistance reads open-circuit or far outside the 8–12 kΩ range at room temperature
- Heating element shows no continuity on a multimeter test
- F2 persists after thermistor replacement, pointing to a control board fault
Need Professional Help?
Find qualified technicians in your area for proper diagnostics and repair.
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