High
41 on Halstead Dimplex Combi

Your boiler is struggling to circulate water properly, causing the flame to cut out shortly after it starts to prevent overheating.

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

Water flow failure/ Flame for a short period only - Low water pressure / Reversed sensors

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 →

Related fault codes

Related guides you might find useful