Common problems guide

The most common Biasi Riva Advance M96.24SM problems

The faults most likely to send a Biasi Riva Advance M96.24SM into lockout — with plain-English causes, what to check first, estimated repair costs and whether you need a Gas Safe engineer.

This model is discontinued. Parts can be harder to source and expensive. If repair costs are mounting, a new A-rated boiler may be the smarter choice.
3 documented codes
3 most common
3 DIY-safe checks
0 engineer needed

The 3 most common faults

01
E01 High DIY-safe

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

What to try first

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

Est. cost
£100-£250
Parts
Ignition Electrode, Gas Valve, Printed Circuit Board (PCB)
Full guide for E01
02
Lock-out High DIY-safe

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

What to try first

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

Est. cost
£100-280
Parts
Circulation Pump, Overheat Thermostat, Primary Heat Exchanger
Full guide for Lock-out
03
Lock-out state High DIY-safe

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

What to try first

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

Est. cost
£100-350
Parts
Ignition Electrode, Gas Valve, Ignition PCB
Full guide for Lock-out state

on the Biasi Riva Advance M96.24SM

Ignition ElectrodeGas ValvePrinted Circuit Board (PCB)Circulation PumpOverheat ThermostatPrimary Heat Exchanger

Based on parts cited in our fault code database. Your engineer will confirm what's actually needed after diagnosis.

Call a Gas Safe engineer if…

  • You can smell gas or see signs of a leak
  • The Biasi shows an Emergency or High severity code
  • The boiler keeps locking out after repeated resets
  • You've tried the DIY checks and the fault hasn't cleared
  • There's visible water leaking from the boiler
  • The flame is yellow or orange instead of blue
See the full 3-code list for the Biasi Riva Advance M96.24SM