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Ideal Wiring Harness External Controls 179079

Ideal

Ideal Wiring Harness External Controls 179079

Ideal 179079 wiring harness for external controls, fitted to Logic+ Combi and Logic Max Combi boilers.

At a glance

  • Part type: Wiring harness, external controls
  • Also known as 1777741
  • This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Manufacturer part no.
179079
Showing prices

£9.44

£7.87 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 179079 is a wiring harness for external controls, used to connect heating controls such as room thermostats and programmers to the boiler's control circuitry. It is manufactured by Ideal for the Logic+ Combi and Logic Max Combi ranges, along with Ideal commercial appliance parts. The harness carries the low-voltage switching and demand signals between the external control and the boiler PCB, so a sound connection is essential for correct heating and hot water operation.

Signs this part needs replacing

  • External controls fail to bring the boiler on, or the boiler ignores a call for heat
  • Intermittent operation of the thermostat or programmer with no obvious fault at the control itself
  • Visible damage to the harness: chafed, scorched, brittle or broken conductors
  • Loose or corroded plug connections at the boiler end of the harness
  • Fault codes or lockouts linked to control circuit communication

Before you order

  • Check the appliance GC number and model against the compatibility list to confirm the harness suits your boiler
  • Note the alternative part number 1777741 when cross-referencing older documentation or stock records
  • This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.

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