What the manual says
Manufacturer manualGo to section 'F' - Potential issues with gas supply, gas valve voltage (70-140V DC), or PCB.
From this model's manual
Verified against the Baxi Boiler Combi 80 Eco installation & service manual.
Engineer required
This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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All 47 fault codes on the Combi 80 Maxflue
Seeing a different code? Every code this model can display, in one place.
© neon flashing10111213141522232425262728293031Burner On NeonDHW FLOW SWITCHFANFlame Failure (Red Light) ONFlame Failure Neonneon flashingneon flashing (Burner lights)neon flashing (Fan runs)neon flashing (Pump runs)neon flashing (Section D)neon flashing (Section E)neon flashing (Section H & K)neon flashing (Section I)neon flashing (Section J)neon flashing (Spark/Ignition)neon illuminatedPower On NeonPressure of 3 or greaterRed 'Flame Failure' neon litReset neon illuminated (Red)Safety thermostat activated且 neon flashing布 & 皿 neons flashing布 neon flashing毛 neon flashing皿 neon illuminated血 neon illuminated閃 neon flashing閃 neon illuminated