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Potterton Ionisation Electrode 5142138

Potterton

Potterton Ionisation Electrode 5142138

Potterton ionisation electrode, part number 5142138, for Potterton Commercial Sirius FS gas boilers.

At a glance

  • Part type: Ionisation electrode
Manufacturer part no.
5142138
Showing prices

£174.00

£145.00 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 ELECTRODE - IONISATION is a Potterton ionisation electrode, part number 5142138. It is a flame sensing electrode used in the combustion control circuit of Potterton Commercial Sirius FS gas boilers. The electrode is supplied as a Potterton Commercial spare for the boiler range listed below.

Signs this part needs replacing

  • The boiler locks out or fails to prove flame shortly after ignition.
  • Repeated lockouts that clear on reset but return on the next firing cycle.
  • Flame failure faults logged even though the burner visibly lights.
  • Intermittent or unstable flame signal readings during combustion analysis.
  • Visible damage, cracking, contamination or distortion at the electrode tip.

Before you order

  • Confirm the appliance model against the fit list above before ordering.
  • Check the existing electrode for the part number 5142138 where it is marked.
  • Inspect the electrode lead, insulation and connector for damage, as faults here can mimic electrode failure.
  • Verify the burner earth and flame sensing circuit before condemning the electrode.

Not sure which part?

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