Biasi Riva Advance M96.24SM Fault codes & diagnostics

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

Combi Natural Gas 24 kW 2004-2008 Discontinued
GC Number 47-970-23
Download the Biasi Riva Advance M96.24SM 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 →

Versions & GC numbers

Which version do you have?

The GC number on your boiler's data badge identifies the exact appliance and production years, as recorded in the UK Product Characteristics Database.

GC number Appliance (register name) Produced
47-970-23 Riva Compact HE M96.24SM/C 2004–2008
Just want the most common Biasi Riva Advance M96.24SM faults?
The top 6 problems in plain English — with causes, DIY checks and repair costs.
Fault codes

All 3 documented codes

Tap any card for details

E01

Your boiler has failed to light the gas flame and has locked itself out for safety.

High DIY-safe £100-£250

What to check first

  1. Check that your gas supply is turned on and other gas appliances are working.
  2. Press and hold the Reset button for 2 seconds then release.
  3. Wait for the boiler to attempt to restart; repeat up to three times if it fails.

Parts commonly replaced

  • Ignition Electrode
  • Gas Valve
  • Printed Circuit Board (PCB)

Related codes

Full explanation for E01
Lock-out

Your boiler has switched itself off because it has detected that the water inside has become dangerously hot.

High DIY-safe £100-280

What to check first

  1. Check that all radiator valves are fully open to allow water to flow.
  2. Ensure there is enough water pressure in the system by checking the pressure gauge.
  3. Wait for the boiler to cool down and press the reset button on the control panel.

Parts commonly replaced

  • Circulation Pump
  • Overheat Thermostat
  • Primary Heat Exchanger
Full explanation for Lock-out
Lock-out state

Your boiler has attempted to light itself four times without success and has turned itself off for safety.

High DIY-safe £100-350

What to check first

  1. Check if other gas appliances in your home, like a cooker, are working to confirm gas supply.
  2. Ensure your gas meter has credit and the emergency control valve is open.
  3. Press the reset button on the front control panel once to attempt a restart.

Parts commonly replaced

  • Ignition Electrode
  • Gas Valve
  • Ignition PCB

Related codes

Full explanation for Lock-out state
Status & diagnostic codes

7 operating states & engineer diagnostics

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

Lamps flashing Status Your boiler is operating normally under a central heating demand and is simply showing its current status rather than a fault. 1 second ON 1 second OFF Status Your boiler is operating normally and is currently running because there is a demand for heating or hot water. A short pulse every 4 seconds Status Your boiler is working correctly and is simply in standby mode while its built-in protection prevents the internal pipes from freezing. LD1 Status Your boiler has lost its flame or failed to light, usually due to a lack of gas or a detection fault, meaning you have no heating or hot water. LD2 Status Your boiler has detected an internal communication or wiring fault which is preventing it from firing up correctly. LD3 Status Your boiler has detected an internal electrical communication error or a fault with the main circuit board. Li Status Your boiler has detected that the water inside has become far too hot, causing it to shut down for safety purposes.