What does the Potterton p < 0.5 fault code mean?

Your boiler has stopped working because the water pressure in the system is too low.

How much does it cost to fix Potterton error code p < 0.5?

Typical repair cost for the Potterton p < 0.5 fault is £0-120 including labour.

Can I fix Potterton fault code p < 0.5 myself?

Locate the filling loop (usually two braided hoses or internal levers under the boiler)

Potterton p < 0.5 Fault Code: What It Means & How to Fix It

Q: What does the Potterton p < 0.5 fault code mean?

Your boiler has stopped working because the water pressure in the system is too low.

Q: How much does it cost to fix Potterton error code p < 0.5?

Typical repair cost for the Potterton p < 0.5 fault is £0-120 including labour.

Q: Can I fix Potterton fault code p < 0.5 myself?

Locate the filling loop (usually two braided hoses or internal levers under the boiler)

Technical description

System pressure falls below 0.5 bar (Control display will warn/Burner control goes to safety shut-down)

What causes this fault?

This fault occurs when there is not enough water inside your heating system to safely allow the boiler to fire up. The most common reason is a slow leak from a radiator valve or a pipe joint, but it can also happen if you have recently bled your radiators and didn't top the pressure back up.

This code is frequently seen in autumn when homeowners turn their heating back on for the first time after summer, revealing pressure drops that occurred while the system was idle.

Engineer required

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

Find a Gas Safe engineer

Search the official register →

Your boiler has stopped working because the water pressure in the system is too low.

Technical description

What causes this fault?

Engineer required

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