Vaillant
Vaillant 151017 Flow switch
Vaillant 151017 flow switch for Vaillant water heating appliances, detecting water movement to signal activation and manage flow changes.
At a glance
- Part type: Flow switch
£10.80
£9.00 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 Vaillant 151017 is a flow switch supplied as a spare component for Vaillant water heating appliances. It monitors water movement through the appliance circuit and signals activation or a change in flow, so the control system can respond to demand for heating or hot water. The part is identified by the number 151017.
Signs this part needs replacing
- The appliance does not fire or start when there is a call for hot water
- Operation is intermittent or erratic as taps or heating circuits are opened
- No response from the appliance even though water is flowing through the circuit
- Fault codes relating to flow or water detection appear on the display
- Repeated lockouts occur during draw-off
Before you order
- Confirm the number 151017 against the marking on the existing component
- Check the appliance data plate, including the GC number and serial, to confirm the correct variant
- Inspect the seals and O-rings around the housing and renew them if they are worn or hardened
Mechanical
| Part type | Flow Switches |
|---|---|
| Length | 0.1mm |
| Width | 0.1mm |
| Depth | 0.1mm |
Compliance
| Manufacturer part number (MPN) | 151017 |
|---|---|
| Commodity code | 9026 10 80 00 |
| GPC classification | Household Boilers/Furnaces/Tank Water Heaters Replacement Parts/Accessories |
No fitment data held for this part.
Documents & drawings
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No documents held for this part. The technical team will source them from the manufacturer — usually the same working day.
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