Ariston
Ariston 3-Way Spring Kit DHW 998975
Spring kit for the DHW three-way diverter valve on Ariston Microgenus and Microgenus II boilers.
At a glance
- Part type: three-way spring kit, DHW side
- Appliance family: Microgenus and Microgenus II
- Also known as 1577446
£29.81
£24.84 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 998975 is a three-way spring kit for the domestic hot water (DHW) side of the diverter valve assembly. It is used on Ariston Microgenus and Microgenus II boilers to restore spring tension within the diverter valve, allowing the valve to move correctly between heating and hot water positions. The kit is listed under diverter valve parts for the Microgenus appliance family.
Signs this part needs replacing
- Domestic hot water runs cold or only warms intermittently while the heating circuit works normally
- The diverter valve fails to change over between heating and hot water positions
- The valve spindle returns slowly or sticks after being moved
- Reduced spring tension causing the valve to hold position incorrectly
- Clicking or chattering from the diverter valve area during a hot water demand
Before you order
- Confirm the boiler model is an Ariston Microgenus or Microgenus II variant listed above
- Check the appliance serial number against the serial number ranges shown for the Microgenus 23 MFFI and 27 MFFI
- Confirm whether the boiler is the NG or LPG version where the model listing specifies it
- Verify the fault lies with the diverter valve spring rather than the valve body or actuator
Compliance
| Barcode / EAN | 5411692307073 |
|---|---|
| Alternative numbers | 1577446 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| ARISTON ARISTON MICROGENUS 23 MFFI - FROM SERIAL No 2320005600001 TO SERIAL No 2320021400002 | — | — | — | |
| ARISTON ARISTON MICROGENUS 27 MFFI - FROM SERIAL No 2320005600001 TO SERIAL No 2320021400002 | — | — | — | |
| ARISTON ARISTON MICROGENUS II 24 MFFI UK - FROM SERIAL No 2320402900001 | — | — | — | |
| ARISTON ARISTON MICROGENUS II 28 MFFI UK - FROM SERIAL No 2320402900001 | — | — | — | |
| ARISTON ARISTON MICROGENUS II 31 MFFI UK - FROM SERIAL No 2320402900001 | — | — | — | |
| ARISTON MICROGENUS 23 MFFI LPG EDITION 2 (APR 2000) | 47-116-14 | 47-116-14 | — | — |
| ARISTON MICROGENUS 23 MFFI LPG EDITION 5 (MAR 2004) | 47-116-14 | 47-116-14 | — | — |
| ARISTON MICROGENUS 23 MFFI NG EDITION 2 (APR 2000) | 47-116-14 | 47-116-14 | — | — |
| ARISTON MICROGENUS 23 MFFI NG EDITION 5 (MAR 2004) | 47-116-14 | 47-116-14 | — | — |
| ARISTON MICROGENUS 24 MFFI HE UK NG | 47-116-37 | 47-116-37 | — | — |
Showing 10 of 23 compatible appliances.
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 23 MFFI LPG EDITION 2 (APR 2000) (GC 47-116-14), MICROGENUS 23 MFFI LPG EDITION 5 (MAR 2004) (GC 47-116-14), MICROGENUS 23 MFFI NG EDITION 2 (APR 2000) (GC 47-116-14), MICROGENUS 23 MFFI NG EDITION 5 (MAR 2004) (GC 47-116-14), MICROGENUS 27 MFFI LPG EDITION 2 (APR 2000) (GC 47-116-15), MICROGENUS 27 MFFI LPG EDITION 5 (MAR 2004) (GC 47-116-15), MICROGENUS 27 MFFI NG EDITION 2 (APR 2000) (GC 47-116-15), MICROGENUS 27 MFFI NG EDITION 5 (MAR 2004) (GC 47-116-15)
manualmanualARISTON 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 24 MFFI UK LPG, MICROGENUS II 24 MFFI UK MET (GC 47-116-25), 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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