High Lockout
P0 on Ideal HP290

Your boiler has detected that the water pressure is too low for it to operate safely, which usually means the system needs more water.

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description

Low Pressure Error

What causes this fault?

This fault occurs when the internal sensor detects that the system's water pressure has dropped below the minimum level required to circulate heat safely. The most common reasons are a slow leak in the radiator valves or pipework, or simply needing to top up the water levels after bleeding your radiators.

This fault is more common in autumn when homeowners turn their heating back on for the first time, as small leaks may have developed or the system pressure may have settled during the summer months.

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.

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