Ariston
Ariston Microswitch 3-Way/Main Flow Group 573340
Microswitch for the 3-way/main flow group on Ariston Genus, Eurocombi and Ecogenus gas boilers, part number 573340.
At a glance
- Also known as DHW-MICRO-SWITCH, 1571168
- Installation should be carried out by a Gas Safe registered engineer
£48.71
£40.59 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 573340 is a microswitch for the 3-way/main flow group (diverter) assembly. It is used in Ariston gas boilers to detect the position of the diverter valve, signalling domestic hot water or central heating demand to the boiler's control system. This component is part of the main flow group and is essential for correct switching between DHW and CH modes.
Signs this part needs replacing
- Boiler does not respond to hot water demand
- Heating does not activate when expected
- Intermittent switching between DHW and CH modes
- Microswitch does not click or operate when the diverter valve moves
- Visible damage, wear or corrosion on the switch
Before you order
- Check your boiler model and serial number against the fitment list above
- Confirm the part number 573340 matches your existing component
- Inspect the existing microswitch for physical damage or wear
- Installation should be carried out by a Gas Safe registered engineer
Compliance
| Barcode / EAN | 5411692153106 |
|---|---|
| Alternative numbers | DHW-MICRO-SWITCH, 1571168 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| ARISTON ARISTON ECOGENUS 24 RFFI - FROM SERIAL No 2319933800115 TO SERIAL No 2320033400001 | — | — | — | |
| ARISTON ARISTON EUROCOMBI A23 MFFI - FROM SERIAL No 983610001 TO SERIAL No 2320015700001 | — | — | — | |
| ARISTON ARISTON EUROCOMBI A23 MFFI - UP TO SERIAL No 983610001 | — | — | — | |
| ARISTON ARISTON EUROCOMBI A27 MFFI - FROM SERIAL No 983610001 TO SERIAL No 2320015700001 | — | — | — | |
| ARISTON ARISTON EUROCOMBI A27 MFFI - UP TO SERIAL No 983610001 | — | — | — | |
| ARISTON ARISTON GENUS 23 MFFI UK - FROM SERIAL No 231983610060 TO SERIAL No 2320004900093 | — | — | — | |
| ARISTON ARISTON GENUS 23 MFFI UK - UP TO SERIAL No 983610060 | — | — | — | |
| ARISTON ARISTON GENUS 27 MFFI UK - FROM SERIAL No 231983610060 TO SERIAL No 2320004900093 | — | — | — | |
| ARISTON ARISTON GENUS 27 MFFI UK - UP TO SERIAL No 983610060 | — | — | — | |
| ARISTON ARISTON GENUS 30 MFFI UK - FROM SERIAL No 2319909000837 TO SERIAL No 2320015700001 | — | — | — |
Showing 10 of 22 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 — ECOGENUS 24 RFFI SYS EDITION 1 LPG (DEC 1999) (GC 41-116-03), ECOGENUS 24 RFFI SYS EDITION 1 NG (DEC 1999) (GC 41-116-03)
manualmanualARISTON appliance manual — EUROCOMBI A23 MFFI LPG UK EDITION 1 (OCT 2007) (GC 47-116-10), EUROCOMBI A23 MFFI NG UK EDITION 1 (OCT 2007) (GC 47-116-10)
manualmanualARISTON appliance manual — GENUS 23 MFFI UK EDITION 1 LPG (JUN 1998) (GC 47-116-08), GENUS 23 MFFI UK EDITION 1 NG (JUN 1998) (GC 47-116-08), GENUS 23 MFFI UK EDITION 2 LPG (JAN 1999) (GC 47-116-08), GENUS 23 MFFI UK EDITION 2 NG (JAN 1999) (GC 47-116-08), GENUS 27 MFFI UK EDITION 1 LPG (JUN 1998) (GC 47-116-09), GENUS 27 MFFI UK EDITION 1 NG (JUN 1998) (GC 47-116-09), GENUS 27 MFFI UK EDITION 2 LPG (JAN 1999) (GC 47-116-09), GENUS 27 MFFI UK EDITION 2 NG (JAN 1999) (GC 47-116-09)
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