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Glow-worm Wiring Harness Three Way Valve 0020118154

Glow-worm

Glow-worm Wiring Harness Three Way Valve 0020118154

Wiring harness for the three-way valve on Glow-worm Betacom, Easicom and Ultimate gas boilers.

At a glance

  • Also known as 1340628
Manufacturer part no.
0020118154
Showing prices

£17.92

£14.93 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 Glow-worm 0020118154 is a wiring harness for the three-way valve on selected Glow-worm gas boilers. It carries the control signals from the boiler PCB to the three-way valve, allowing the valve to switch between heating and hot water modes. The harness is used across the Betacom, Easicom and Ultimate appliance families.

Signs this part needs replacing

  • The three-way valve does not move, or fails to switch between heating and hot water
  • Boiler locks out or reports a fault relating to the valve or diverter
  • Heating or hot water works intermittently as the valve signal cuts in and out
  • Visible damage to the harness, such as chafed, brittle or heat-damaged insulation
  • Loose, corroded or burnt connector at the valve or PCB end

Before you order

  • Confirm your boiler model and GC number against the fitment list above
  • Check the connector at the valve and PCB matches the harness on your appliance
  • Inspect the existing harness for damage before ordering, so the fault is correctly identified
  • If your model is not listed, check the manufacturer's parts list for your appliance

Not sure which part?

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