How much does it cost to fix Ideal error code E57-048?

Typical repair cost for the Ideal E57-048 fault is £180-300 including labour.

E57-048 High

Ideal E57-048 Fault Code

Q: What does the Ideal E57-048 fault code mean?

Your boiler is struggling to heat your tap water because an internal seal or flow component is faulty, causing the system to stop working properly.

Also written as E57048 — same fault.

The Ideal E57-048 fault code means: your boiler is struggling to heat your tap water because an internal seal or flow component is faulty, causing the system to stop working properly.. It appears on 6 Ideal models in our database.

Technical description: DHW heat exchanger+’O’rings (mod. miniHEC24)

Typical repair cost £180-300 (including labour)

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

Find a Gas Safe engineer

Search the official register for a qualified engineer in your area.

Gas Safe Register →

Ideal models that show the E57-048 fault code

Click a model for the full fault code list and model-specific repair notes.

Source

Ideal E57-048 fault code information on this page is sourced and cross-checked against the official Ideal service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026