Ideal Wiring Harness Main Gas Valve 133065

The Ideal 133065 is a wiring harness for the main gas valve second supply, used on Ideal Commercial boiler ranges. It carries the electrical connections between the boiler control and the main gas valve, so the valve opens and closes at the correct point in the ignition sequence. It is supplied as a single harness assembly and is listed under part type WIRING.

• The boiler fails to ignite or drops out during the ignition sequence because the gas valve is not receiving a signal.
• Intermittent lockouts that clear on reset, particularly where the gas valve circuit is suspected.
• Visible damage to the harness: chafed insulation, heat damage, brittle or broken conductors, or a loose plug at the valve or board end.
• Fault codes or diagnostic readings pointing to the gas valve circuit rather than the valve itself.
• Continuity faults found when testing the harness with a multimeter.

• Check the boiler model and GC number against the compatibility list to confirm 133065 is the correct harness for your appliance.
• Confirm the part number on the existing harness or the boiler's parts listing before ordering, as harness routing and plug types vary between ranges.
• Inspect the gas valve and its seals while the harness is being replaced, and renew any gasket or seal that is disturbed.
• This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.