Sime
Sime Flow Switch Assembly Without Microswitch 6281570
Flow switch assembly without microswitch for Sime Ecomfort, Format and Murelle HE boilers.
At a glance
- Part type: flow switch assembly, supplied without microswitch
£29.24
£24.37 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 Sime flow switch assembly is a hydraulic sensing component used in Sime domestic gas boilers to signal water flow through the appliance. This version is supplied without a microswitch, so flow detection is completed by the existing or separately sourced switch. It is listed for use across a range of Sime Ecomfort, Format and Murelle HE models.
Signs this part needs replacing
- Domestic hot water demand is not detected and the boiler fails to fire when a tap is opened
- Hot water runs intermittently, cutting in and out while the outlet is in use
- Boiler reports a flow or water detection fault on the display
- DHW operation is erratic while central heating continues to work normally
- Visible damage, debris build-up or stiffness at the flow switch body or its connections
Before you order
- Confirm the boiler model against the fit list above, as several Sime ranges use different flow switch arrangements
- Check whether the existing microswitch is serviceable, since this assembly does not include one
- Inspect the wiring and connector condition at the switch before fitting, replacing any damaged leads
- Confirm the part reference 6281570 matches the number on the component being removed
No specification data held for this part.
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| SIME SIME ECOMFORT 25HE | — | — | — | |
| SIME SIME ECOMFORT 30HE | — | — | — | |
| SIME SIME ECOMFORT 35HE | — | — | — | |
| SIME SIME ECOMFORT PLUS 25HE | — | — | — | |
| SIME SIME ECOMFORT PLUS 30 HE | — | — | — | |
| SIME SIME FORMAT 100C | — | — | — | |
| SIME SIME FORMAT 100C LPG | — | — | — | |
| SIME SIME FORMAT 110C | — | — | — | |
| SIME SIME FORMAT 30 HE | — | — | — | |
| SIME SIME FORMAT 80C | — | — | — |
Showing 10 of 19 compatible appliances.
Documents & drawings
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