Glow-worm Flexicom 56 3E Fault codes & diagnostics

1 fault code with plain-English explanations, severity ratings, DIY guidance, and repair cost estimates.

Combi Natural Gas 30 kW 1999-2003 Discontinued
GC Numbers 37-047-0837-047-09

Replaced by: Flexicom cx

No manual available yet We don't hold the official service manual for this model yet. We're sourcing it — check back soon.

The fault code is already on your display

Note it down before pressing reset — resetting clears the code immediately. How to read fault codes →

Fault codes

All 1 documented codes

Tap any card for details

Red light

Your boiler has detected a safety issue with its burning or ventilation process and has shut itself down to prevent any risk to your home.

Emergency Engineer only £150-350

Parts commonly replaced

  • Flue limit thermostat
  • PCB
  • Ignition electrode
  • Gas valve
Full explanation for Red light
Status & diagnostic codes

1 operating states & engineer diagnostics

Not faults — these are normal operating states. Tap to expand.

Green light Status Your boiler has successfully completed the ignition process and is currently operating normally.