Ariston
Ariston Sheath Thermostat LG 350 338290
Ariston 338290 sheath thermostat (LG 350) for Multi, Perfo, Perfo PLUS and STYX appliances.
At a glance
- Part type: sheath thermostat
- Also known as 8901343
£48.79
£40.66 ex. VAT · VAT at 20%
Same-day dispatch
Ordered by 4pm Mon–Fri, 10:30am Sat.
30-day returns
Unused, in original packaging.
What it is
The Ariston 338290 is a sheath thermostat, referenced as LG 350, used across a number of Ariston heating appliances. It sits in the sheath pocket and senses the temperature of the water or heat exchanger, signalling the control system to switch the burner on and off. It is a service part for the Multi, Perfo, Perfo PLUS and STYX families listed below.
Signs this part needs replacing
- The appliance runs but does not reach or hold its set temperature.
- Frequent short cycling, with the burner cutting out earlier than expected.
- Overheat lockout or a temperature-related fault code appearing on the controls.
- Erratic heating or hot water output that does not match the setting.
- Visible corrosion, damage or a loose fit on the sheath when inspected.
Before you order
- Confirm your appliance model and edition against the fitment list above.
- Check the part number on the existing sheath against 338290 before ordering.
- Check the appliance data plate for the full model reference and edition.
Compliance
| Alternative numbers | 8901343 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| ARISTON MULTI 1000 M0 24 KW SOUPLE EDITION 4 (DEC 2009) | — | — | — | |
| ARISTON MULTI 1000 M0 36 KW SOUPLE EDITION 4 (DEC 2009) | — | — | — | |
| ARISTON MULTI 1500 M0 36 KW SOUPLE EDITION 4 (DEC 2009) | — | — | — | |
| ARISTON MULTI 2000 M0 36 KW SOUPLE EDITION 4 (DEC 2009) | — | — | — | |
| ARISTON MULTI 2500 M0 36 KW SOUPLE EDITION 4 (DEC 2009) | — | — | — | |
| ARISTON MULTI 3000 M0 36 KW SOUPLE EDITION 4 (DEC 2009) | — | — | — | |
| ARISTON MULTI 500 M0 24KW SOUPLE EDITION 4 (DEC 2009) | — | — | — | |
| ARISTON MULTI 750 M0 24 KW SOUPLE EDITION 4 (DEC 2009) | — | — | — | |
| ARISTON PERFO 1000 M0 15 KW SOUPLE EDITION 4 (DEC 2009) | — | — | — | |
| ARISTON PERFO 1500 M0 15 KW SOUPLE EDITION 4 (DEC 2009) | — | — | — |
Showing 10 of 58 compatible appliances.
Documents & drawings
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