How much does it cost to fix Ideal error code Flow return reversed?

Typical repair cost for the Ideal Flow return reversed fault is £90-180 including labour.

Flow return reversed High

Ideal Flow return reversed Fault Code

Q: What does the Ideal Flow return reversed fault code mean?

Your boiler has detected that the temperature sensors on the main pipes are showing unusual readings, often because the water flow is not moving in the direction the system expects.

Also written as FLOWRETURNREVERSED — same fault.

The Ideal Flow return reversed fault code means: your boiler has detected that the temperature sensors on the main pipes are showing unusual readings, often because the water flow is not moving in the direction the system expects.. It appears on 14 Ideal models in our database.

Technical description: Check if the flow thermistor is correctly clipped to pipe. If not, replace flow thermistor.

Typical repair cost £90-180 (including labour)

Engineer required

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

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Ideal models that show the Flow return reversed fault code

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

Source

Ideal Flow return reversed 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