Ariston Washing Machine Error F03
⚡ Quick Answer: The Ariston washing machine F03 error indicates a malfunction related to the temperature sensor, specifically the thermistor, which may not be accurat... ✅ DIY Fixable
What Does Error F03 Mean?
The Ariston washing machine F03 error indicates a malfunction related to the temperature sensor, specifically the thermistor, which may not be accurately sensing or regulating water temperature during the wash cycle. This issue often prevents the machine from heating water to the selected temperature, leading to incomplete or prematurely halted wash cycles. The error may be accompanied by the F03 code displayed on the panel or an LED blink pattern, especially when the machine is expected to heat water.
Common Symptoms:
- Error F03 displayed on the panel or via LED blink pattern during wash, especially when heating water is expected.
- Water does not heat to the selected temperature during cycle.
- Cycle may stop or pause prematurely due to inability to reach temperature setpoint.
Possible Causes
- Faulty wash temperature sensor (thermistor) open circuit (high)
- Faulty temperature sensor wiring / connector (medium)
- Stuck heater relay affecting sensor circuit (medium)
How to Fix Error F03
DIY Fix Basic checks and reset
- Turn off and unplug the washing machine.
- Wait 10–15 minutes to allow capacitive discharge.
- Plug the machine back in and restart the selected wash cycle to see if F03 clears.
Technician Only Inspect and test temperature sensor circuit
- Disconnect power to the machine.
- Access the wash temperature sensor (NTC thermistor) inside the machine.
- Measure sensor resistance at room and elevated temperatures to verify against manufacturer specs.
- Check wiring harness and connectors for continuity, corrosion, or damage.
- Replace the sensor or repair wiring if out of spec.
Parts needed: Wash temperature sensor (NTC thermistor), Wiring harness/connectors
Technician Only Inspect heater relay and control board connections
- Power off the machine and access control board area.
- Inspect the heater relay contacts and surrounding circuitry for signs of sticking or burn damage.
- Test continuity and replace the relay or board components as needed.
Parts needed: Heater relay, Control board
- If the error persists after basic reset and inspection.
- If you are not comfortable accessing internal electrical components.
- If tests show inconsistent or out‑of‑range sensor readings.
Next step
Choose the next step for F03
Confirm the diagnosis before ordering. An error code can identify the system involved, but it does not prove that a specific part has failed.
Most relevant component to inspect
Temperature Sensor
Monitors the internal temperature to ensure correct operation and prevent overheating.
- Typical part-only price
- $15 - $35
- DIY difficulty
- Easy
- Estimated time
- 15-30 mins
Where can I find the model number?
Check the rating label around the door, lid, frame, rear panel, or inside the appliance cabinet. Use the complete model number, including suffixes.
Verify the complete model and part number on the retailer's compatibility page before ordering.
Other parts options
Check related components first; use model search as a fallback.
Wiring Harness
Connects controls, sensors, motors, and other electrical components inside the appliance.
Main Control Board
The central brain of the appliance that controls all components, cycles, and timings.
Model-compatible Washing Machine parts
Enter the complete model number to browse compatible replacement parts. This is a model-based parts search, not a diagnosis that a specific component failed.
Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. We may earn a commission from other qualifying purchases or service requests made through links on this page, at no additional cost to you. Recommendations are based on repair relevance, not commission rate.
Optional routine care
Maintenance supplies
These products support cleaning or routine upkeep. They are separate from the possible repair components above and are not claimed to fix this error code or symptom.
Washing Machine Cleaner Tablets
Routine tub-cleaning supplies for residue and odor control. They do not repair a mechanical, drainage, or electronic fault.
Braided Washer Inlet Hoses
A maintenance replacement option for visibly worn external fill hoses. Verify thread size, length, and hot/cold connection requirements.
Washer Drain Hose Holder
Helps secure an external drain hose at the standpipe. It does not correct an internal pump or control fault.
Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. Recommendations are based on routine-care relevance, not commission rate.
Technical Specifications
| wattage | N/A |
|---|---|
| component | Door Lock Mechanism |
| resistance | 1-5 ohms |
| part_number | C00195345 |
| voltage_rating | 230V AC |
Common Questions
What does F03 error mean on Ariston washing machine?
F03 indicates a temperature sensor malfunction, preventing proper water heating during wash cycles.
Can I fix Ariston washing machine F03 error myself?
Yes, you can perform basic checks and resets. Unplug the machine, wait 10-15 minutes, then restart the cycle.
How much does it cost to fix F03 error?
Repair costs for the F03 error typically range from ¥3,000 to ¥10,000, including parts and labor.
When should I call a technician for F03?
Call a technician if the error persists after a reset, if you're uncomfortable with electrical components, or if sensor readings are inconsistent.
Sources & References
Data last verified: 2026-07-25
User Comments (0)
Share your experience or solution below.
Please login to post a comment.
Be the first to comment!