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Potterton Wiring Harness 7660973

Potterton

Potterton Wiring Harness 7660973

Wiring harness for pump pre-dispense, PWM and fan connections on Potterton Commercial Sirius 2 and Sirius 3 boilers.

Manufacturer part no.
7660973
Showing prices

£16.80

£14.00 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 wiring harness, part number 7660973, is the loom that links the pump pre-dispense, PWM and fan circuits on Potterton Commercial appliances. It is used across the Sirius 2 and Sirius 3 commercial boiler families. The harness carries the control and feedback wiring for these components within the boiler.

Signs this part needs replacing

  • Pump or fan runs intermittently or not at all despite a known-good component
  • Fault codes relating to pump, PWM signal or fan operation
  • Visible chafing, scorching, brittle or cracked insulation on the loom
  • Loose, corroded or heat-damaged plug connectors
  • Fan speed control unstable or unresponsive

Before you order

  • Confirm the boiler model and range from the appliance data plate
  • Check the existing harness part number against 7660973
  • Inspect the connector ends and routing to confirm the fault lies with the harness
  • Verify the appliance is isolated 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.