Biasi Riva Advance M96.28SM Fault codes & diagnostics

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

Combi Natural Gas 28 kW 2004-2008 Discontinued
GC Number 47-970-24
Download the Biasi Riva Advance M96.28SM manual The official installation & service manual (PDF) — the exact document these fault codes were verified against. PDF

The fault code is already on your display

Note it down before pressing reset — resetting clears the code immediately. 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
47-970-24 Riva Compact HE M96.28SM/C 2004–2008
Fault codes

All 2 documented codes

Tap any card for details

ER + 69

Your boiler has detected an internal electronic communication error and has locked itself out for safety.

High Engineer only £180-350 Shared across the range

Parts commonly replaced

  • Main Printed Circuit Board (PCB)
  • Internal Wiring Harness
Full explanation for ER + 69
LP

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

High DIY-safe £0-120 Shared across the range

What to check first

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

Parts commonly replaced

  • Filling loop hose
  • Water pressure switch
  • Expansion vessel
Full explanation for LP
Status & diagnostic codes

2 operating states & engineer diagnostics

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

30c Diagnostic Your boiler has detected that the water temperature has got too high and has shut down as a safety precaution. Li Status Your boiler has detected that the water inside the system is getting too hot, causing it to shut down for safety.