What does the Vokera GREEN LED On every 0.5-secs fault code mean?

Your boiler has paused because it has detected a temporary issue, likely due to low water pressure or an intake problem, and is waiting for the condition to clear.

How much does it cost to fix Vokera error code GREEN LED On every 0.5-secs?

Typical repair cost for the Vokera GREEN LED On every 0.5-secs fault is £0-180 including labour.

Can I fix Vokera fault code GREEN LED On every 0.5-secs myself?

Check the pressure gauge on the front of the boiler; it should be between 1 and 1.5 bar.

Vokera GREEN LED On every 0.5-secs Fault Code: What It Means & How to Fix It

Technical description

Temporary fault, e.g.: APS fault, low water pressure

What causes this fault?

This fault occurs when the boiler's safety sensors detect an unstable condition, such as the internal water pressure dropping too low or the air flow being restricted. The system enters a temporary pause to prevent damage, waiting for the correct pressure or air balance to be restored before it attempts to fire up again.

This issue often surfaces when the heating is first turned on after summer, as stagnant parts or small leaks can cause the system pressure to drop over periods of inactivity.

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 paused because it has detected a temporary issue, likely due to low water pressure or an intake problem, and is waiting for the condition to clear.

Technical description

What causes this fault?

Engineer required

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