Ideal Overheat Thermostat Lead Assembly 155812

The overheat thermostat lead assembly is an Ideal spare part, reference 155812, used on Ideal Commercial Concord CXDI and CXSI boiler ranges. It provides the electrical connection between the overheat thermostat and the boiler's control circuit, carrying the safety signal that shuts the appliance down when an overheat condition is detected.

• The boiler locks out on overheat and needs a manual reset, even when the system is not running hot.
• The overheat thermostat trips repeatedly after resetting.
• Intermittent shutdowns or nuisance lockouts that trace back to the overheat circuit.
• Visible damage to the lead, such as cracked insulation, scorching or a broken conductor.
• Loose, corroded or poor connections at the thermostat or control board terminals.

• Confirm the boiler model and part number against the appliance data plate and the manufacturer's parts list.
• Check whether the fault lies with the lead or with the overheat thermostat itself before replacing either component.
• Compare the connector and terminal arrangement on the existing lead with the replacement before fitting.
• Isolate the electrical supply and follow the manufacturer's instructions when fitting.