How to fix Baxi Megaflo fault code E160

What does the Baxi Megaflo E160 fault code mean?

The E160 fault code on a Baxi Megaflo indicates an overheat lockout, which occurs when the boiler’s temperature exceeds safe operating limits. This safety feature prevents potential damage to the system and ensures user safety.

Common Causes

  • Blocked Heat Exchanger: A buildup of debris or limescale can restrict water flow, causing overheating.
  • Faulty Thermostat: If the thermostat is malfunctioning, it may not accurately regulate the temperature, leading to overheating.

Can I fix it myself? (DIY)

It is advisable to call a Gas Safe Engineer for this issue, as it involves gas and electrical components that can be dangerous if handled improperly. Attempting to reset the boiler without proper knowledge may lead to further complications.

Estimated Repair Cost (2026 UK Prices)

The estimated repair cost for addressing the E160 fault could range from £150 to £300, depending on whether the issue is a simple thermostat replacement or a more complex heat exchanger cleaning or replacement.