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Ideal Wiring Harness Safety Extra Low Voltage 177554

Ideal

Ideal Wiring Harness Safety Extra Low Voltage 177554

Ideal 177554 extra low voltage safety wiring harness for Logic Combi E and ES boilers, supplied singly as a direct replacement loom.

At a glance

  • Also known as 1777713
  • This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Manufacturer part no.
177554
Showing prices

£35.11

£29.26 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 Ideal 177554 is an extra low voltage safety harness — a pre-terminated wiring loom that carries low voltage signals between the safety and control components inside the boiler. It is manufactured by Ideal Heating for the Logic Combi appliance family. The harness forms part of the boiler's electronics and controls group, linking the safety circuit so the appliance can monitor and shut down correctly.

Signs this part needs replacing

  • Boiler locks out or fails to fire with no obvious fault at the gas or water side
  • Intermittent faults that appear and clear when the loom or its plugs are disturbed
  • Error codes relating to the safety circuit or control electronics
  • Visible damage to the harness: cracked insulation, scorched or brittle conductors, corroded pins
  • Loose, poorly seated or heat-damaged connectors at either end of the loom

Before you order

  • Check the GC number on the appliance data badge against the compatibility list to confirm the correct harness for your model.
  • Note the alternative part number 1777713 when cross-referencing against older documentation or stock records.
  • This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.

Not sure which part?

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