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

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

Flow return reversed High

Boiler Fault Code Flow return reversed

Also written as FLOWRETURNREVERSED — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code Flow return reversed appears across 1 boiler brand and 14 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning 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. (As reported on Ideal Sprint)

Pick your boiler brand for the Flow return reversed fix

Ideal Flow return reversed 14 models

Source

Information for the Flow return reversed fault code is sourced from the official service / installation manual for each model that displays it. Read more about how we source fault codes →

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