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Ideal Warning Harness ICOS HE 173551

Ideal

Ideal Warning Harness ICOS HE 173551

Ideal warning harness (173551) for ICOS HE boilers, connecting PCB to thermostats, switches and sensors.

At a glance

  • Part type: Wiring harness
  • Also known as 1179534
Manufacturer part no.
173551
GC number
H07-787
Showing prices

£80.53

£67.11 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 Warning Harness (part number 173551) is a wiring loom designed for Ideal ICOS HE boilers. It connects the printed circuit board (PCB) to the various thermostats, switches and sensors within the appliance, allowing the PCB to control the appliance and make safety checks. This harness is an essential electrical link that ensures reliable communication between the boiler's control system and its safety devices, contributing to safe and efficient operation.

Signs this part needs replacing

  • Intermittent boiler operation, including unexpected shutdowns or lockouts that may not be resolved by resetting
  • Error codes relating to sensor or communication faults on the boiler's display
  • Boiler not responding to thermostat or control inputs, or inconsistent heating
  • Visible damage, corrosion or loose connections on the wiring harness
  • Overheating or burning smell from the wiring area, indicating electrical stress

Before you order

  • Check your appliance model and GC number against the compatibility list to ensure correct fitment.
  • Confirm the part number 173551 matches the existing harness in your boiler.
  • Verify the alternative part number 1179534 if your existing harness carries that code.
  • Ensure the boiler 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.