Ariston Water Heater Error E10
⚡ Quick Answer: The Ariston water heater error E10 indicates a flow sensor or flow switch failure, preventing the appliance from detecting proper water flow when a ho... ✅ DIY Fixable
What Does Error E10 Mean?
The Ariston water heater error E10 indicates a flow sensor or flow switch failure, preventing the appliance from detecting proper water flow when a hot water tap is opened. This results in the unit not heating water, causing the display to show the E10 error code. It's essential to check for any blockages in the flow sensor or issues with water flow, as these are the most common causes of this error.
Common Symptoms:
- Water heater does not start heating when hot water tap is opened
- Unit displays E10 and remains idle despite water demand
Possible Causes
- Faulty or blocked flow sensor/flow switch (medium)
- Incorrect water flow or low water flow preventing sensor activation (medium)
How to Fix Error E10
DIY Fix Basic checks for water flow issues
- Turn off power and close the water supply to the unit.
- Check the cold inlet filter for debris and clean it if necessary.
- Ensure all valves to the water heater are fully open.
- Restart the unit and check if E10 clears.
Technician Only Inspect and service flow sensor or related wiring
- Turn off power and water to the heater.
- Remove access panels to reach the flow sensor on the water inlet manifold.
- Inspect the flow turbine or switch mechanism for scale, debris, or mechanical binding.
- Test sensor continuity and operation with appropriate tools.
- Repair or replace the flow sensor/flow switch assembly as needed.
Parts needed: Flow sensor / flow switch, Inlet filter (if damaged), Associated wiring harness
- If cleaning the inlet filter and basic checks do not clear the E10 code
- If the flow sensor appears damaged or wiring faults are suspected
- If there are any signs of water leaks or electrical issues during inspection
Technical Specifications
| wattage | 3000W |
|---|---|
| component | Heating Element |
| resistance | 10-30 ohms |
| part_number | Ariston 651001 |
| voltage_rating | 240V AC |
Common Questions
What does E10 error mean on ariston water heater?
E10 error indicates a flow sensor failure, stopping water heating when the tap is opened.
Can I fix ariston water heater E10 error myself?
Yes, you can check the inlet filter for debris and ensure all valves are open.
How much does it cost to fix E10 error?
Repair costs for the E10 error range from ¥8,000 to ¥25,000, depending on the region.
When should I call a technician for E10?
Call a technician if basic checks don't resolve the issue or if you suspect wiring faults.
Sources & References
- Codici errore Scaldabagno Ariston - HDAUTO.IT (community)
Data last verified: 2026-04-14
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