How to fix Ideal Vogue Max fault code E240

What does the Ideal Vogue Max E240 fault code mean?

The E240 fault code on the Ideal Vogue Max indicates a thermostat fault, which can prevent the boiler from operating correctly. This issue may arise from a malfunctioning thermostat or wiring problems affecting the temperature regulation.

Common Causes

  • Faulty Thermostat: The thermostat may be defective or not reading temperatures accurately, leading to improper boiler operation.
  • Wiring Issues: Damaged or loose wiring connections between the thermostat and the boiler can disrupt communication, causing the fault code to appear.

Can I fix it myself? (DIY)

It is recommended to call a Gas Safe Engineer for this issue, as it involves gas and electrical components that require professional expertise. Attempting to fix it yourself may pose safety risks.

Estimated Repair Cost (2026 UK Prices)

The estimated repair cost for resolving the E240 fault is around £150 to £250, depending on whether the thermostat needs replacement or if wiring repairs are necessary. This estimate includes parts and labour for a qualified engineer.