BoilerFaultCodes.com

Alpha E-Tec Regular Fault Codes

Regular Natural GasLPG 15-25 kW 2019-present
GC Numbers: 41-311-7341-311-7441-311-75

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Note it down before pressing reset — resetting clears the code immediately. How to read fault codes →

Most common fault codes

1
Your boiler has tried to light but failed, meaning your heating and hot water will not work until it is reset or repaired.
May be DIY safe · £80-250
2
Your boiler has sensed it is getting too hot and has shut itself down as a safety precaution.
May be DIY safe · £100-£350
3
Your boiler has sensed that the exhaust gases are getting too hot and has shut down as a safety precaution.
Gas Safe engineer required · £120-280

All 27 fault codes

Code Severity Plain English
1 High Your boiler has tried to light but failed, meaning your heating and hot water will not work until it is reset or repaired.
2 High Your boiler has sensed it is getting too hot and has shut itself down as a safety precaution.
3 High Your boiler has sensed that the exhaust gases are getting too hot and has shut down as a safety precaution.
4 High Your boiler has stopped working because the internal control board can no longer communicate with the gas valve.
5 High Your boiler has detected an issue with the sensor that monitors the temperature of the water heading to your radiators, causing the system to stop working for safety.
6 High Your boiler has stopped working because its internal components are struggling to communicate with the main control board due to a wiring issue.
7 Low Your boiler is currently running in a special testing mode used by engineers to check emissions, and it should return to normal operation automatically after a short period.
8 Medium Your boiler has been reset too many times in a short period and has now locked itself out for safety.
12 Medium Your boiler has lost connection with the sensor that monitors the temperature of your hot water cylinder, meaning it may not know when to heat your water.
16 High Your boiler has stopped working because the internal fan, which safely helps the system breathe and clear exhaust gases, is not spinning correctly.
20 High Your boiler is struggling to detect the flame needed to heat your water, even if the burner has successfully lit.
23 High Your boiler has detected a problem with the sensor that monitors the temperature of the water returning from your radiators.
24 Low Your boiler has detected that one of the buttons on the control panel is stuck or faulty, preventing you from changing settings.
27 High Your boiler has detected that water is not moving through the system quickly enough to prevent it from overheating.
29 High Your boiler has detected a problem with the sensor that monitors exhaust gases, and it has shut down for safety purposes.
31 High Your boiler has lost its connection with the thermostat or control panel, meaning it cannot receive instructions to turn on or off.
37 High Your boiler has stopped working because the electricity supply coming into the unit has dropped below the minimum level required to operate safely.
38 High Your boiler has started an ignition process but lost its flame unexpectedly, causing the system to shut down for safety.
43 High Your boiler has lost the signal that confirms a flame is burning, so it has shut down for safety.
44 High Your boiler has shut down completely for safety reasons because it has detected a serious internal error that requires a professional inspection.
45 High Your boiler is overheating because the water is not flowing through the system as quickly as it should.
46 High Your boiler has stopped running because an external safety thermostat has detected that the water temperature has become too hot.
47 Low Your boiler is still working but cannot reach its full power, meaning your radiators might not get as hot as they should.
49 High Your boiler has shut down because the water returning from your radiators has become too hot, usually caused by a circulation problem.
51 Medium Your boiler has lost its wireless connection with your thermostat or remote control, meaning they can no longer talk to each other to manage your heating.
70 High Your boiler has detected a problem with the sensor that monitors water temperature as it returns from your heating system, causing the unit to stop running for safety.
71 High Your boiler has stopped running because it senses that even though the burner is lit, the water inside isn't getting any warmer.

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