BoilerFaultCodes.com

Vokera Unica HE Fault Codes

Combi Natural GasLPG 24-36 kW 2006-2015 Discontinued
GC Numbers: 47-094-6447-094-6547-094-66

Replaced by: Unica i

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Most common fault codes

10
Your boiler has failed to ignite, which means it cannot provide heat or hot water because it isn't successfully lighting a flame.
May be DIY safe · £120-280
AL10
Your boiler has failed to light because either the gas didn't ignite or a sensor has detected that the condensate drainage pipe is blocked.
May be DIY safe · £80-250
AL20
Your boiler has sensed that it is starting to overheat and has shut itself down as a safety precaution.
May be DIY safe · £90-180

All 17 fault codes

Code Severity Plain English
10 High Your boiler has failed to ignite, which means it cannot provide heat or hot water because it isn't successfully lighting a flame.
AL10 High Your boiler has failed to light because either the gas didn't ignite or a sensor has detected that the condensate drainage pipe is blocked.
AL20 High Your boiler has sensed that it is starting to overheat and has shut itself down as a safety precaution.
AL21 High Your boiler has detected an issue with an external safety device or thermostat connection, causing it to stop running for safety.
AL26 High Your boiler has shut down because the water returning to the unit is too hot, which usually means heat isn't being distributed around your home properly.
AL28 High Your boiler has detected that heat is flowing in the wrong direction or the sensors are reading temperatures incorrectly, causing the system to shut down for safety.
AL34 High Your boiler has stopped working because the fan that clears away waste gases is not spinning at the correct speed or its signal isn't being picked up by the system.
AL40 High Your boiler has detected that the water pressure in the central heating system is too low to operate safely and has shut down.
AL41 High Your boiler has stopped working because the water pressure in the system has dropped too low to operate safely.
AL52 High Your boiler's internal computer has encountered a memory or software error and can no longer control the heating properly.
AL55 High Your boiler’s internal control board has lost its identity settings and needs to be reconfigured by a professional.
AL60 High Your boiler has detected a problem with the sensor that monitors hot water temperature, which may result in no hot water or inconsistent temperatures.
AL71 High Your boiler has detected an issue with the sensor that measures the temperature of the water leaving the unit, meaning it cannot safely regulate heat.
AL73 High Your boiler has detected a problem with the sensor that monitors the temperature of the water returning to the unit, which is preventing it from running safely.
AL74 High Your boiler has detected that the water temperature is changing too quickly or inconsistently, causing it to shut down for safety.
AL79 High Your boiler has shut down because it detected that the water inside has become dangerously hot or overheated.
Low-pressure High Your boiler has stopped working because the water pressure inside the system has dropped too low to allow it to run safely.

Vokera Unica HE is discontinued — time for a new one?

Parts for discontinued models can be hard to find and expensive. A new A-rated boiler could save you money on both repairs and energy bills.

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