BoilerFaultCodes Green Light
Your boiler is receiving electrical power and is ready to operate normally.
Baxi Genesis 80 Fault codes & diagnostics
3 fault codes with plain-English explanations, severity ratings, DIY guidance, and repair cost estimates.
Combi Natural Gas 24 kW 1997-2003 Discontinued
Replaced by: Baxi Solo 2 / Baxi Combi 80e
The fault code is already on your display
Note it down before pressing reset — resetting clears the code immediately. How to read fault codes →
Just want the most common Baxi Genesis 80 faults?
The top 6 problems in plain English — with causes, DIY checks and repair costs.
Fault codes
All 3 documented codes
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Orange Light Your boiler is receiving power and should be operating normally, as this light typically indicates the appliance is switched on.
Your boiler is receiving power and should be operating normally, as this light typically indicates the appliance is switched on.
What to check first
- Check that your thermostat is turned up high enough to call for heat
- Ensure the programmer or timer is set to an 'on' period
- Check that the mains power switch for the boiler is in the 'on' position
Parts commonly replaced
- External Thermostat
- Timer/Programmer Unit
Related codes
Red Light Your boiler has stopped working because it cannot light or maintain a flame, meaning you currently have no heating or hot water.
Your boiler has stopped working because it cannot light or maintain a flame, meaning you currently have no heating or hot water.
Parts commonly replaced
- Ignition electrode
- Gas valve
- Flame sensing probe