Ideal Wiring Harness Controls 174426

The Ideal 174426 is a wiring harness for the control circuit of Ideal Commercial boilers. It carries the low-voltage control signals and connections between the control components and the appliance's main board, so the boiler can be started, modulated and monitored correctly. The harness is supplied as a complete assembly with its connectors fitted, ready to route and plug in.

• The boiler fails to fire or drops out intermittently with no obvious mechanical cause
• Control panel or display behaves erratically, or the appliance locks out at random
• Fault codes relating to control communication or sensor signals appear repeatedly
• Visible damage to the harness: chafed, cracked or heat-hardened insulation, exposed conductors
• Loose, corroded or discoloured connector pins, or a connector that will not latch securely

• Confirm your appliance model and serial number against the compatibility list, as harness routing and connector layout differ between Ideal Commercial ranges
• Check the existing harness part number on the label or connector before ordering, and note that 1780618 is also used for this item
• Isolate the appliance from the electrical supply before removing or refitting the harness
• Inspect the mating connectors and any retaining clips at the same time, as these are often disturbed during removal