Ariston
Ariston Central Heating By-Pass Kit 65100776
Central heating by-pass kit for Ariston Microgenus and Microgenus II MFFI boilers, part number 65100776.
At a glance
- Appliance family: Microgenus and Microgenus II MFFI
- Also known as 1574694
£9.06
£7.55 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 65100776 is a central heating by-pass kit supplied by Ariston for use in Microgenus and Microgenus II MFFI gas boilers. It forms part of the boiler's heating circuit, providing a controlled by-pass path across the system to maintain minimum flow through the appliance. The kit is listed under gas boiler spares and is fitted where the original by-pass arrangement has failed or been removed.
Signs this part needs replacing
- Boiler short-cycling or overheating when heating demand is low, such as with most radiators closed off
- Persistent kettling or rushing water noise from the boiler under low-flow conditions
- System flow and return differentials proving difficult to set or hold during commissioning
- Visible leakage, weeping or seized movement at the by-pass assembly
- By-pass components missing, blanked off or previously removed from the heating circuit
Before you order
- Confirm the boiler model against the fit list above before ordering
- On Microgenus II models, check the appliance serial number against the stated serial number threshold
- Inspect the existing by-pass arrangement to confirm the kit is the correct assembly for your appliance
- Have the boiler's installation and service documentation to hand so the by-pass can be set correctly after fitting
Compliance
| Barcode / EAN | 5411692488840 |
|---|---|
| Alternative numbers | 1574694 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| ARISTON ARISTON MICROGENUS II 28 MFFI UK - FROM SERIAL No 2320402900001 | — | — | — | |
| ARISTON ARISTON MICROGENUS II 31 MFFI UK - FROM SERIAL No 2320402900001 | — | — | — | |
| ARISTON MICROGENUS 24 MFFI HE UK NG | 47-116-37 | 47-116-37 | — | — |
| ARISTON MICROGENUS 28 MFFI HE UK LPG | 47-116-38 | 47-116-38 | — | — |
| ARISTON MICROGENUS 28 MFFI HE UK NG | 47-116-38 | 47-116-38 | — | — |
| ARISTON MICROGENUS 32 MFFI HE UK NG | 47-116-39 | 47-116-39 | — | — |
| ARISTON MICROGENUS II 28 MFFI UK LPG | — | — | — | |
| ARISTON MICROGENUS II 28 MFFI UK MET | 47-116-26 | 47-116-26 | — | — |
| ARISTON MICROGENUS II 31 MFFI UK LPG | 47-116-27 | 47-116-27 | — | — |
| ARISTON MICROGENUS II 31 MFFI UK MET | 47-116-27 | 47-116-27 | — | — |
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.
ARISTON appliance manual — MICROGENUS 24 MFFI HE UK NG (GC 47-116-37), MICROGENUS 28 MFFI HE UK LPG (GC 47-116-38), MICROGENUS 32 MFFI HE UK NG (GC 47-116-39)
manualmanualARISTON appliance manual — MICROGENUS II 28 MFFI UK LPG, MICROGENUS II 28 MFFI UK MET (GC 47-116-26), MICROGENUS II 31 MFFI UK LPG (GC 47-116-27), MICROGENUS II 31 MFFI UK MET (GC 47-116-27)
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