Checking hours…Mon–Fri 7:30am–5pm · Sat 9am–12pm01302 279234Trade account
Vaillant Wiring Harness VAILLANT193586

Vaillant

Vaillant Wiring Harness VAILLANT193586

At a glance

  • Part type: Cables, Leads & Wiring Harnesses
  • Also known as 1376866, VAILLANT193586
Manufacturer part no.
193586
Showing prices

£34.12

£28.43 ex. VAT · VAT at 20%

In stock
Cut-off passed — dispatches next 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 193586 is a wiring harness supplied by Vaillant as a spare part for their water heating appliances. It is a pre-formed loom of insulated cables and moulded connectors that carries power and control signals between the electrical components inside the unit.

A harness of this type sits behind the appliance casing and links the control board, sensors and other electrical parts. Damage or corrosion at the terminals interrupts those signals, which is why the loom is replaced as a complete assembly rather than repaired in situ.

Signs this part needs replacing

  • Intermittent operation, with the appliance cutting in and out without an obvious mechanical cause
  • Fault codes relating to sensors, fans or control communication that return after clearing
  • Visible damage to the loom: cracked or brittle insulation, chafed cable runs or exposed conductor
  • Scorched, discoloured or corroded connector housings and pins
  • Loose or pushed-back terminals that will not seat firmly on their mating plug

Before you order

  • Confirm the part number on the existing harness or in the appliance wiring diagram matches 193586
  • Check the appliance data plate and serial number so the correct variant is identified
  • Inspect the mating connectors and any seals or grommets at the same time, as these are often disturbed during removal
  • Isolate the electrical supply and follow the manufacturer's wiring diagram when fitting

Not sure which part?

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