Ideal Wiring Harness Mains Erp 177926

The Ideal 177926 is a mains wiring harness supplied for Ideal Independent System and Ideal Commercial appliances built from the Prefix AC onwards. It is the electrical loom that carries the mains supply and associated control connections within the appliance, linking the incoming supply point to the boiler's control electronics.

Because the harness handles mains voltage, it is a safety-critical component: damaged insulation, heat-affected connectors or loose terminations can interrupt the supply to the boiler or create an intermittent fault that is difficult to trace.

• The appliance fails to power up or loses mains supply intermittently
• Blown fuses or tripping at the supply when the harness is connected
• Visible scorching, discolouration or brittle insulation on the loom or its plugs
• Loose, corroded or heat-damaged terminals at the harness connectors
• Fault codes or lockouts that point to a loss of supply to the control board

• Confirm the appliance model and GC number against the compatibility list, as the harness is specific to the Prefix AC onwards build
• Check the alternative number 1777729 if you are matching against an older parts listing
• Isolate the mains supply and prove dead before removing or refitting the harness
• Electrical work on the appliance should be carried out by a competent person