Ariston
Ariston 65105090 Low Pressure Switch
At a glance
- Part type: Pressure switch / sensor
£74.40
£62.00 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 65105090 is a low pressure switch supplied for use in Ariston gas boilers. It forms part of the pressure monitoring circuit within the appliance, signalling the control board when pressure falls outside the normal operating range so the boiler can respond accordingly. The part is listed across a number of boilers in the Ariston Clas HE range.
Signs this part needs replacing
- The boiler locks out or fails to fire on a call for heat
- A low pressure fault code or warning appears on the appliance display
- The boiler runs briefly and then shuts down
- Operation becomes intermittent, with repeated reset attempts needed
- The pressure reading does not change when system conditions change
Before you order
- Confirm the part number 65105090 matches the component currently fitted to your appliance
- Check your boiler model against the compatibility list before ordering
- Inspect any sealing washer or O-ring on the existing switch and renew it if it is damaged
- Have the replacement carried out by a competent engineer
Mechanical
| Part type | Pressure Switch / Sensor |
|---|---|
| Appliance family | Clas HE |
Compliance
| Manufacturer part number (MPN) | 65105090 |
|---|---|
| Barcode / EAN | 65105090 |
| Commodity code | 8536 50 80 00 |
| GPC classification | Household Boilers/Furnaces/Tank Water Heaters Replacement Parts/Accessories |
No fitment data held for this part.
Documents & drawings
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