How much does it cost to fix Halstead error code Error in power supply?

Typical repair cost for the Halstead Error in power supply fault is £120-250 including labour.

Error in power supply High

Halstead Error in power supply Fault Code

Q: What does the Halstead Error in power supply fault code mean?

Your boiler is failing to detect the correct amount of electrical power from your home's mains supply, causing it to shut down to prevent damage.

Also written as ERRORINPOWERSUPPLY — same fault.

The Halstead Error in power supply fault code means: your boiler is failing to detect the correct amount of electrical power from your home's mains supply, causing it to shut down to prevent damage.. It appears on 4 Halstead models in our database.

Technical description: Low mains voltage • Check mains voltage

Typical repair cost £120-250 (including labour)

Engineer required

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

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Halstead models that show the Error in power supply fault code

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

Source

Halstead Error in power supply fault code information on this page is sourced and cross-checked against the official Halstead service / installation manuals for each affected model.

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