Common problems guide

The most common Biasi Riva Advance M96.28SM problems

The faults most likely to send a Biasi Riva Advance M96.28SM 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.
10 documented codes
6 most common
6 DIY-safe checks
0 engineer needed

The 6 most common faults

01
ER 01 + Reset High DIY-safe

Your boiler has failed to light or was unable to detect a flame, causing it to lock out for safety.

What to try first

Check that your gas supply is turned on at the meterIf you have a prepay meter, check that you have creditPress and hold the Reset button for five seconds

Est. cost
£100-280
Parts
Ignition Electrode, Gas Valve, Flame Sensing Electrode
Full guide for ER 01 + Reset
02
ER 02 + Reset High DIY-safe

Your boiler has sensed it is getting too hot and has shut itself down for safety.

What to try first

Turn the selector switch to the 'R' position for a few seconds and then back to the original setting.Check that your radiator valves are fully open to allow water to flow.Ensure your boiler pressure is between 1 and 1.5 bar on the pressure gauge.

Est. cost
£100-280
Parts
Overheat Thermostat, Circulation Pump, Main Heat Exchanger
Full guide for ER 02 + Reset
03
ER 10 + reset High DIY-safe

Your boiler has detected that the water pressure is too low, preventing it from heating your home safely.

What to try first

Locate the filling loop (braided flexible hose) underneath the boiler.Slowly open the valve(s) until you hear water entering the system.Monitor the pressure gauge until it reaches between 1.0 and 1.5 bar.Close the valves tightly and press the reset button on the control panel.

Est. cost
£0-120
Parts
Filling loop, Pressure sensor, Expansion vessel
Full guide for ER 10 + reset
04
Li High DIY-safe

Your boiler has detected that the water inside the system is getting too hot, causing it to shut down for safety.

What to try first

Check that all your radiator valves are fully openEnsure the boiler pressure gauge is between 1.0 and 1.5 barReset the boiler by turning the control knob to the 'R' position for 5 seconds

Est. cost
£120-350
Parts
Circulation pump, Overheat thermostat, Main Heat Exchanger (if scaled)
Full guide for Li
05
30c High DIY-safe

Your boiler has detected that the water temperature has got too high and has shut down as a safety precaution.

What to try first

Check that all radiator valves are fully openCheck that the system pressure is between 1 and 1.5 bar on the pressure gaugeOnce the boiler has cooled down, press the reset button

Est. cost
£120-280
Parts
Overheat Thermostat, Central Heating NTC Sensor, Circulation Pump
Full guide for 30c
06
LP High DIY-safe

Your boiler has detected that the water pressure is too low to operate safely.

What to try first

Locate the filling loop valves underneath the boiler.Slowly open both taps to let fresh water into the system.Close the taps once the pressure gauge on the front of the boiler reaches between 1 and 1.5 bar.

Est. cost
£0-120
Parts
Filling loop hose, Water pressure switch, Expansion vessel
Full guide for LP

on the Biasi Riva Advance M96.28SM

Ignition ElectrodeGas ValveFlame Sensing ElectrodePCBOverheat ThermostatCirculation Pump

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 10-code list for the Biasi Riva Advance M96.28SM