Asko Washer F7 Error: Temperature sensor fault
Asko washer F7 error is a common issue reported by Asko appliance owners. What Asko Error Code F7 Means Error code F7 on Asko washing machines indicates that the NTC temperature sensor (thermistor) has returned a reading outside the valid range. Without a reliable temperature signal the control board cannot regulate the heating element safely, […]
Yes
DIY Fixable
From $80
Typical Repair Cost
15-30 min
Pro Repair Time
Quick Assessment
Answer to continue safely
Is it safe to keep using?
Maybe. Cold programmes will complete normally. Avoid heated programmes until the NTC is confirmed working — the heater may run unchecked without a valid sensor signal, posing a risk of overheating.
Can I reset the code?
Yes. Power off at mains for 60 seconds will clear F7. However, the error will return on the next heated cycle if the NTC sensor is faulty.
When to stop immediately?
Stop if you notice: The machine emits steam from the detergent drawer or door seal — the heater may be running without temperature control., A burning smell from the base of the machine during a heated cycle..
Symptoms You May Notice
Heated wash programmes abort shortly after starting
Any programme with a temperature setting above 30 °C starts normally then displays F7 within 10–15 minutes without completing the heat phase.
Water inside drum feels unexpectedly cold or hot
The water temperature during a wash is noticeably wrong — either the heater is running unchecked and the water is scalding, or it is completely cold despite a hot programme being selected.
Machine runs normally on cold wash, faults on hot programmes only
Cold rinse cycles and quick-cold programmes complete without any issue, confirming the mechanical parts are working and isolating the fault to the temperature sensing circuit.
F7 appears consistently at the same point in heated cycles
The error code always triggers at roughly the same elapsed time or temperature in the wash phase, suggesting the sensor is outputting a fixed incorrect value rather than varying with true temperature.
Possible Causes
Failed NTC thermistor
The NTC sensor element has drifted out of specification or gone open-circuit, returning a resistance value the control board cannot interpret as a valid temperature.
Requires ProfessionalLoose or corroded NTC connector
The two-pin plug connecting the NTC sensor wiring to the control board harness has worked loose or developed corrosion, interrupting the signal intermittently.
DIY PossibleCombined heater/NTC assembly failure
On some Asko models the NTC sensor is built into the same assembly as the heating element. If the element has burnt out the NTC may be damaged in the same event.
Requires ProfessionalSafe Checks You Can Do
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1
Reseat NTC harness connector
Unplug the machine. Remove the rear panel (typically 6 Phillips screws on Asko W-series). Locate the NTC temperature sensor — it is a small cylindrical component pushed into the heater flange at the base of the outer drum, with a 2-pin connector. Disconnect and firmly reconnect the 2-pin plug.
If the connector pins look green or corroded, clean them gently with a dry cloth or fine emery paper before reseating.
Tools required -
2
Test NTC resistance with multimeter (optional)
With the connector unplugged and the machine at room temperature (approximately 20 °C), touch multimeter probes to the two pins on the NTC sensor. A working Asko NTC reads approximately 10,000–12,000 ohms at 20 °C. A reading of infinity (open circuit) or near zero confirms the sensor has failed.
NTC sensors cost approximately $15–30 and are straightforward to replace once the rear panel is removed.
Tools required -
3
Reset and test with a 40 °C cycle
After reseating or replacing the NTC, refit the rear panel and run a 40 °C cotton cycle. After 20 minutes, briefly touch the door glass — it should feel noticeably warm. If the cycle completes without F7 the repair is successful.
If F7 recurs at the same point in the cycle with a new NTC fitted, the control board heater relay may be faulty.
When to Call a Professional
Contact a qualified technician if:
- NTC multimeter test confirms open-circuit — sensor replacement required.
- New NTC fitted but F7 persists — control board heater relay or PCB tracking fault needs professional diagnosis.
- NTC and heater element are combined in one assembly (check model service manual) — full assembly replacement from $160.
Need Professional Help?
Find qualified technicians in your area for proper diagnostics and repair.
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