How much does it cost to fix Remeha error code Water level control: lock out?

Typical repair cost for the Remeha Water level control: lock out fault is £120-250 including labour.

Water level control: lock out High

Remeha Water level control: lock out Fault Code

Q: What does the Remeha Water level control: lock out fault code mean?

Your boiler has switched itself off because it cannot properly detect the water level, which is a safety measure to prevent the system from running dry.

Also written as WATERLEVELCONTROLLOCKOUT — same fault.

The Remeha Water level control: lock out fault code means: your boiler has switched itself off because it cannot properly detect the water level, which is a safety measure to prevent the system from running dry.. It appears on 2 Remeha models in our database.

Technical description: The boiler goes to lock out if the electrode is disconnected or if there is a shortcut between the electrode and earth. Requires reset by pressing the reset button on the instrument panel.

Typical repair cost £120-250 (including labour)

DIY fix possible

Locate the instrument panel on the front of the boiler.Press the 'Reset' button firmly once to see if the error clears.If the boiler restarts and runs normally, monitor it; if it locks out again immediately, you must call an engineer.

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Remeha models that show the Water level control: lock out fault code

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

Source

Remeha Water level control: lock out fault code information on this page is sourced and cross-checked against the official Remeha service / installation manuals for each affected model.

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