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Viessmann Wiring Harness X8/X9 with Ionisation Cable 7828614

Viessmann

Viessmann Wiring Harness X8/X9 with Ionisation Cable 7828614

Viessmann wiring harness with ionisation cable, connector designations X8/X9, for Vitodens 200-W WB2B appliances.

At a glance

  • Appliance family: Vitodens 200-W WB2B
  • Also known as 2321778
Manufacturer part no.
7828614
Showing prices

£83.63

£69.69 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

This is a Viessmann wiring harness with an integrated ionisation cable, carrying the connector designations X8 and X9. It forms part of the electrical and flame-detection circuit on Vitodens 200-W WB2B appliances. The harness routes the ionisation signal from the burner assembly back to the control unit.

Signs this part needs replacing

  • Repeated flame-detection faults or lockouts on start-up
  • Intermittent burner ignition with no consistent cause elsewhere in the circuit
  • Visible damage to the harness, such as chafed, brittle or heat-affected insulation
  • Loose, corroded or discoloured terminals at the X8 or X9 connectors
  • Ionisation cable damaged, pinched or disconnected along its routing

Before you order

  • Confirm your appliance model and serial number against the fits listed above
  • Check the connector designations on the existing harness are X8/X9
  • Inspect the harness routing and connectors for the fault before ordering, so the correct part is replaced
  • Have the appliance isolated from the electrical supply before any inspection or fitting work

Not sure which part?

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