Ideal Mains Wiring Harness Master 174677

The Ideal 174677 is a mains wiring harness supplied as a complete loom for Ideal Commercial appliances. It carries mains voltage from the appliance's supply connection through to the control board, fan, pump and other powered components, so the boiler's electrical circuits receive a clean, correctly terminated feed.

This is the Master harness variant listed by Ideal for the Imax Xtra range of commercial boilers. Because the loom is supplied pre-terminated with the correct plugs and connectors, it removes the need to remake individual crimped ends on site.

• The appliance loses mains power intermittently, or fails to power up at all when the supply is present at the isolator
• Visible scorching, discolouration or a burnt smell around the harness connectors or the control board plug
• Cracked, brittle or chafed insulation on the loom, often found where it passes through a panel grommet or near a hot surface
• Repeated tripping of the RCD or RCBO when the boiler is switched on
• Fault codes or erratic behaviour from the control board that clear when the harness is moved or reseated

• Confirm the appliance model and serial number against the compatibility list, as the Imax Xtra range uses more than one loom variant
• Note the alternative part number 1780582, which may appear on older documentation or stock records
• Isolate the electrical supply at the double-pole isolator and prove dead before removing the existing harness
• This is not a gas-carrying component, but any work inside the appliance casing should be carried out by a competent engineer