How much does it cost to fix Potterton error code HIGH WATER TEMPERATURE?

Typical repair cost for the Potterton HIGH WATER TEMPERATURE fault is £150-250 including labour.

HIGH WATER TEMPERATURE Emergency

Potterton HIGH WATER TEMPERATURE Fault Code

Q: What does the Potterton HIGH WATER TEMPERATURE fault code mean?

Your boiler has detected that the water inside is getting too hot and has shut itself down to prevent overheating.

Also written as HIGHWATERTEMPERATURE — same fault.

The Potterton HIGH WATER TEMPERATURE fault code means: your boiler has detected that the water inside is getting too hot and has shut itself down to prevent overheating.. It appears on 1 Potterton model in our database.

Technical description: 1. Automatic gas valve push rod sticking. Water rate will be normal.

Typical repair cost £150-250 (including labour)

Engineer required

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

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Potterton models that show the HIGH WATER TEMPERATURE fault code

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

Main Mersey Super Repair: £150-250

Source

Potterton HIGH WATER TEMPERATURE fault code information on this page is sourced and cross-checked against the official Potterton service / installation manuals for each affected model.

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