Ariston
Ariston 691598 Thermostat
Ariston 691598 thermostat for the Euro Prisma EP 30 O boiler, used from serial number 000419 onwards.
At a glance
- Part type: thermostat
- Appliance family: Euro Prisma
- Also known as 1575432
£26.52
£22.10 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 691598 is a thermostat supplied as a boiler spare for the Ariston Euro Prisma EP 30 O. It forms part of the boiler's temperature control circuit, switching the appliance in response to the sensed water or flow temperature. It is listed under thermostats within the gas boiler spares range.
Signs this part needs replacing
- The boiler fails to respond to changes in temperature, running continuously or not firing at all.
- Domestic hot water or heating temperature is inconsistent or drifts away from the set point.
- The appliance locks out or shuts down shortly after reaching temperature.
- Repeated overheating or overheat lockout faults traced to temperature sensing.
- Visible damage, corrosion or a loose or degraded connection at the thermostat.
Before you order
- Confirm the boiler model is the Euro Prisma EP 30 O.
- Check the appliance serial number is 000419 or later, as this part applies from that number onwards.
- Verify the existing thermostat carries the number 691598 before ordering.
- Isolate the electrical supply and confirm the boiler is safe to work on before fitting.
Compliance
| Barcode / EAN | 5411692111038 |
|---|---|
| Alternative numbers | 1575432 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| ARISTON ARISTON EURO PRISMA EP 30 O - FROM SERIAL No 000419 | — | — | — |
Documents & drawings
Everything we hold for this part. Where a document exists but we don't hold it, the technical team will source it from the manufacturer — usually the same working day.
No documents held for this part. The technical team will source them from the manufacturer — usually the same working day.
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