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Potterton Wiring Harness 5117670

Potterton

Potterton Wiring Harness 5117670

Wiring harness for Potterton Promax boilers and ErP store cylinders, connecting the pump, diverter valve and gas valve.

At a glance

  • Also known as 1118526
Manufacturer part no.
5117670
Showing prices

£47.33

£39.44 ex. VAT · VAT at 20%

Available to order · 3 working days
Available to order · 3 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 Potterton 5117670 wiring harness is a multi-way electrical loom that connects the pump, diverter valve and gas valve to the boiler's control system. It is used across the Potterton Promax range of combi and store appliances. The harness carries the control and feedback signals for these three components, so a fault in the loom can affect heating, hot water and valve sequencing together.

Signs this part needs replacing

  • Pump, diverter valve or gas valve failing to run or operating intermittently with no fault in the component itself
  • Intermittent faults that change when the loom or its plugs are moved
  • Overheating, discoloured or brittle insulation on the harness connectors
  • Error codes relating to pump, diverter valve or gas valve that clear and return
  • Loose, corroded or damaged plug terminals at any of the three connections

Before you order

  • Confirm the appliance model and, where applicable, the serial number prefix and suffix shown in the fit list
  • Check the existing harness part number against 5117670 before removal
  • Inspect the pump, diverter valve and gas valve plugs for damage so the correct loom is ordered
  • Isolate the appliance from the electrical supply before fitting

Not sure which part?

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