BoilerFaultCodes.com

Baxi EcoBlue Fault Codes

CombiSystemRegular Natural GasLPG 12-40 kW 2014-present
GC Numbers: 47-077-0347-077-0447-077-0541-077-0641-077-0741-077-0841-077-1041-077-1141-077-1241-077-1341-077-1441-077-1547-077-0647-077-0747-077-0847-077-0947-077-10

This boiler uses LED flash patterns

Count the flashes in one repeating group before the pause. That number is your fault code. Do not reset until you have noted it. How to read fault codes →

Most common fault codes

1 red flash
Your boiler has detected that it is getting too hot or that water isn't moving through the system correctly, causing it to shut down for safety.
May be DIY safe · £120-250
2 red flashes
Your boiler has become too hot and has shut itself down as a safety precaution to prevent damage.
May be DIY safe · £100-£350
3 red flashes
Your boiler has tried to light itself several times but cannot establish a flame, meaning you will have no heating or hot water until it is reset or repaired.
May be DIY safe · £120-280

All 35 fault codes

Code Severity Plain English
1 green flash Low Your boiler has reached the correct temperature and is simply taking a natural rest; it is working exactly as it should.
1 red flash High Your boiler has detected that it is getting too hot or that water isn't moving through the system correctly, causing it to shut down for safety.
2 red flashes High Your boiler has become too hot and has shut itself down as a safety precaution to prevent damage.
3 green flashes Low Your boiler has briefly lost its flame and is trying to restart itself, which is often a temporary glitch that might resolve without any action.
3 red flashes High Your boiler has tried to light itself several times but cannot establish a flame, meaning you will have no heating or hot water until it is reset or repaired.
4 green flashes Low Your boiler is having a temporary 'handshake' issue between its internal electronic brains, but it should fix itself automatically.
4 red flashes High Your boiler's fan is not spinning or communicating correctly with the system, preventing the boiler from starting safely.
5 green flashes Low Your boiler has experienced a brief digital hiccup or settings error and is attempting to fix itself automatically.
5 red flashes High Your boiler's internal memory chip has developed a communication fault, meaning the control board can no longer read its essential settings.
6 green flashes Low Your boiler has encountered a minor glitch and is attempting to restart itself automatically without you needing to do anything.
6 red flashes High Your boiler has detected an internal communication or unexpected component fault and has stopped working as a safety precaution.
110 High Your boiler has switched itself off because it has reached too high a temperature, likely due to trapped air or a blockage stopping water from circulating.
111 High Your boiler has reached its maximum safe temperature and has shut down to prevent overheating.
117 Emergency Your boiler has too much water in the system, which puts extra stress on the internal parts and may cause it to shut down for safety.
118 High Your boiler has detected that there is not enough water in the system to operate safely, causing it to shut down temporarily.
119 High Your boiler has stopped working because the water pressure in the central heating system has dropped too low.
125 High Your boiler has detected that water isn't moving through the system properly, which is causing it to overheat and shut down for safety.
127 Medium Your boiler has failed to heat the hot water tank to a high enough temperature to kill off bacteria, which is a safety routine it performs periodically.
128 High Your boiler started to heat up but the flame went out unexpectedly while it was running.
133 High Your boiler has tried to ignite but failed to stay alight, which is often caused by a lack of gas supply or a blocked condensation pipe.
153 High Your boiler has been manually reset too many times and has temporarily locked itself to prevent further issues.
160 High Your boiler's fan is not spinning at the correct speed, which prevents the system from safely clearing exhaust fumes and starting the ignition process.
162 High Your boiler has detected an issue with how it clears exhaust gases or brings in fresh air, preventing it from firing up for safety.
164 High Your boiler has detected a problem with the sensor or switch that monitors water movement, preventing the system from heating up properly.
166 High Your boiler has detected an issue with the way it is venting or drawing air, causing it to shut down for safety.
270 High Your boiler has detected that it is heating up too quickly without enough water circulating through it, causing it to shut down to prevent overheating.
432 High Your boiler has detected an issue with its electrical grounding system, which is a safety feature that prevents electrical faults.
433 High Your boiler has shut down because it has detected that it is getting far too hot, likely due to water not circulating properly through the system.
E10 Low Your boiler is having trouble reading the outside temperature, which may cause it to run less efficiently or at the wrong temperature.
E20 High Your boiler is struggling to monitor the temperature of the water circulating through your radiators, causing the system to stop heating your home.
E28 High Your boiler has detected a problem with the sensor that monitors the temperature of the exhaust gases, and it has shut down as a safety precaution.
E54 Medium The boiler is struggling to detect when you turn on a hot tap, which may result in lukewarm water or no hot water at all.
E78 High Your boiler has lost its ability to accurately measure water pressure, which prevents it from running safely.
E100 Low Your boiler's internal computer has lost track of the time or date, which can prevent your heating schedules from working correctly.
E109 High Your boiler is struggling to move heated water through the system, causing it to shut down to prevent overheating.

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