Ideal Mini Fault codes & diagnostics

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

CombiSystem Natural Gas 24-32 kW 2006-2009 Discontinued

Replaced by: Logic

Download the Ideal Mini manual The official installation & service manual (PDF) — the exact document these fault codes were verified against. PDF

This boiler uses LED flash patterns

Count the flashes in one repeating group before the pause. That number is your fault code. Do not reset until you have noted it. How to read fault codes →

Fault codes

All 1 documented codes

Tap any card for details

Flashing lamp

Your boiler has detected that the water inside the unit is getting too hot, so it has safely shut itself down to prevent damage.

High Engineer only £120-250

Parts commonly replaced

  • Pump
  • Thermistor sensor
  • Heat exchanger
Full explanation for Flashing lamp
Status & diagnostic codes

2 operating states & engineer diagnostics

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

1 second ON 1 second OFF Status Your boiler is currently in standby mode and is working exactly as it should be. A short pulse every 4 seconds Status Your boiler is currently on standby and is running its built-in protection mode to prevent the internal pipes from freezing during cold weather.