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Vaillant Wiring Harness Timer 0020231122

Vaillant

Vaillant Wiring Harness Timer 0020231122

Vaillant timer wiring harness, part number 0020231122, for HOME Combi 25 -A, 30 -A and 35 -A appliances.

At a glance

  • Appliance family: HOME Combi -A
  • Also known as 1388170
Manufacturer part no.
0020231122
Showing prices

£9.42

£7.85 ex. VAT · VAT at 20%

Available to order · 7 working days
Available to order · 7 working days
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 wiring harness, part number 0020231122, is the loom that connects the timer circuit within the appliance's electrical system. It is supplied by Vaillant for use on the HOME Combi -A range. The harness carries the timer's electrical connections between the timer and the appliance wiring.

Signs this part needs replacing

  • The timer fails to operate or does not respond when set
  • Timer function cuts in and out intermittently
  • Visible damage to the harness insulation, such as chafing, cracking or heat marking
  • Loose, corroded or discoloured terminals at either end of the harness
  • The appliance reports a fault relating to the timer circuit

Before you order

  • Confirm your appliance model matches one of the fitments listed above
  • Check the existing harness routing and connector layout against the part before fitting
  • Isolate the electrical supply to the appliance before removing or fitting the harness
  • Inspect the timer and its connections, as a faulty timer can produce the same symptoms as a faulty harness

Not sure which part?

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