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Vaillant Microswitch 111715

Vaillant

Vaillant Microswitch 111715

Vaillant 111715 microswitch for MAG 14-0/0 XI and MAG Mini 11-0/0 XI water heaters.

At a glance

  • Also known as 1387182
Manufacturer part no.
111715
Showing prices

£15.84

£13.20 ex. VAT · VAT at 20%

Available to order · 1 working day
Available to order · 1 working day
Not certain it's the right part? The technical team verifies fitment before dispatch — no charge, and it stops a second trip.Call the technical teamSend a technical question

Same-day dispatch

Ordered by 4pm Mon–Fri, 10:30am Sat.

30-day returns

Unused, in original packaging.

What it is

The Vaillant 111715 is a microswitch used in the control circuit of Vaillant MAG water heaters. It operates as a small electrical switching component, opening and closing a contact in response to movement from the appliance's actuator or linkage. It is a service part for the MAG range of instantaneous gas water heaters.

Signs this part needs replacing

  • The appliance fails to fire when hot water is drawn, with no switching signal at the control circuit.
  • Intermittent operation — the heater fires on some draws but not others.
  • No audible click from the switch when the actuator moves.
  • Visible burning, pitting or blackening on the switch contacts or terminals.
  • The switch lever or plunger is stiff, stuck or fails to return.

Before you order

  • Confirm the appliance model and variant from the data plate before ordering.
  • Check the terminal arrangement and lever type on the fitted switch against the part being ordered.
  • Inspect the actuator and wiring for damage, as a faulty switch is sometimes a symptom rather than the cause.
  • Isolate the electrical supply and the gas supply before removing the existing switch.

Not sure which part?

Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.