Ariston
Ariston Regulation Knob 991827
Ariston regulation knob, part 991827, for UNO 23 MFFI combi boilers.
At a glance
- Appliance family: UNO 23 MFFI
- Also known as 1591650
£4.55
£3.79 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 991827 regulation knob is a control knob used on Ariston UNO 23 MFFI appliances. It fits onto the boiler's control spindle and allows the user to adjust the regulated setting by hand. The knob is a serviceable plastic component that can be renewed if the original becomes damaged or loose.
Signs this part needs replacing
- The knob spins freely on the spindle without adjusting the setting
- Cracks or splits in the knob body or its internal splines
- The knob has come away from the control spindle completely
- Worn or rounded internal drive that no longer grips
- Physical damage to the knob face or pointer making the setting hard to read
Before you order
- Confirm the appliance model is an Ariston UNO 23 MFFI, in either LPG or NG form
- Check the existing knob for the part number 991827 where it is marked
- Inspect the control spindle for damage before fitting a replacement knob
- Isolate the appliance as required by the manufacturer's instructions before working on the controls
Compliance
| Alternative numbers | 1591650 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| ARISTON UNO 23 MFFI LPG (UK) | — | — | — | |
| ARISTON UNO 23 MFFI NG (UK) | — | — | — |
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.
No technical questions yet for this part.
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