BoilerFaultCodes.com

Vokera Hydra Fault Codes

Combi Natural GasLPG 20-26 kW 1994-2001 Discontinued
GC Number: 47-094-11

Replaced by: Linea

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Most common fault codes

b/E 18
Your boiler is unable to move water around the system because the pump is stuck or a valve has been accidentally closed.
May be DIY safe · £180-350
b18
Your boiler has stopped working because the water inside has become far too hot and has triggered a safety shut-off.
May be DIY safe · £120-£350
b19
Your boiler has sensed that the water returning from your radiators is dangerously hot, causing it to shut down for safety.
May be DIY safe · £100-280

All 42 fault codes

Code Severity Plain English
b/E 18 High Your boiler is unable to move water around the system because the pump is stuck or a valve has been accidentally closed.
b18 High Your boiler has stopped working because the water inside has become far too hot and has triggered a safety shut-off.
b19 High Your boiler has sensed that the water returning from your radiators is dangerously hot, causing it to shut down for safety.
b24 High Your boiler has detected that its internal temperature sensors are reading back-to-front, which usually means water is flowing in the wrong direction or a sensor has failed.
b25 High Your boiler is heating up too quickly and has shut down to prevent damage from overheating.
b26 High Your boiler has stopped working because the pipe that carries away excess wastewater is blocked, often due to a buildup of debris or freezing weather.
b28 High Your boiler has stopped working because the internal fan is not spinning correctly, meaning it cannot safely vent exhaust gases.
b29 High Your boiler has switched itself off because the fan, which safely exhausts fumes, is not running at the correct speed or has stopped working.
b30 High Your boiler has detected that the water is heating up too quickly or isn't circulating properly, causing it to shut down to prevent overheating.
b65 High Your boiler is unable to start up because the internal fan isn't spinning fast enough to safely clear the system before ignition.
E00 High Your boiler thinks a flame is present when there shouldn't be one, and it has stopped working for safety reasons.
E02 High Your boiler is not sensing a flame, which means it cannot light safely to provide you with heating or hot water.
E03 High Your boiler's internal computer has developed an electronic fault and is unable to communicate with its sensors.
E04 High Your boiler has shut down completely due to a loss of electrical power or a safety lockout triggered by an internal fault.
E05 High Your boiler's computer control board has developed an internal electrical error, preventing the system from operating correctly.
E06 High Your boiler’s internal computer brain has developed a communication or electronic fault and cannot control the heating safely.
E07 High Your boiler's internal computer has developed a fault and can no longer control the heating system safely.
E11 High Your boiler’s main computer brain has encountered a critical internal error and can no longer control the heating system safely.
E12 High Your boiler has detected that the temperature in your underfloor heating system has exceeded its safety limit, causing the boiler to shut down to prevent damage to your floors or pipework.
E13 High Your boiler's electronic control board has experienced a critical software or hardware failure, meaning the main computer cannot communicate correctly with the rest of the unit.
E14 High Your boiler's computer control board has developed an internal electrical fault and can no longer manage the system safely.
E15 High Your boiler's electronic control board has experienced an internal malfunction, meaning it can no longer safely operate the appliance.
E16 High Your boiler's internal computer has developed an electrical fault and can no longer control the heating system safely.
E17 High Your boiler’s main computer brain has developed an internal electrical error and cannot control the system safely.
E18 High Your boiler has detected that the water temperature is too high, often caused by a lack of circulation or a blockage within the system.
E19 High Your boiler has detected that the water returning from your radiators is too hot, causing the system to shut down to prevent overheating.
E25 High Your boiler is overheating because water is not moving through the system fast enough to carry the heat away.
E28 High Your boiler has stopped working because the internal fan, which safely exhausts fumes, is not communicating with the main control board.
E29 High Your boiler has stopped working because it cannot confirm that the fan is spinning fast enough to safely clear exhaust fumes.
E30 High Your boiler is getting too hot too quickly, usually because the water is not flowing through the system as fast as it should.
E31 High Your boiler has detected an electrical fault with the internal sensor that monitors water temperature, causing the system to shut down for safety.
E32 High Your boiler has detected a faulty internal sensor that monitors the temperature of the water returning to the unit, causing it to stop working for safety.
E33 High Your boiler has detected an electrical fault with the sensor that monitors water entering the system, which is preventing it from heating up correctly.
E36 High Your boiler has lost communication with the sensor that monitors water temperature, causing the system to shut down for safety.
E37 High Your boiler has lost connection with a internal temperature sensor that monitors the water returning to the unit, causing it to stop heating for safety.
E38 High Your boiler has stopped working because it cannot accurately measure the temperature of the water entering the system.
E44 High Your boiler’s main control board has experienced an internal computer error and can no longer communicate with the rest of the system.
E60 High Your boiler's internal computer has encountered a settings error and cannot decide how to operate safely, causing it to shut down.
E65 High Your boiler's fan is not spinning fast enough to safely clear exhaust fumes, so the system has shut down as a safety precaution.
Test2 High Your boiler is unable to move water around the system, which means it cannot provide heating or hot water safely.
Test3 High Your boiler has detected a problem with the fan that safely removes exhaust gases, meaning it has shut down for safety.
Test4 High Your boiler is struggling to light the burner to provide heat or hot water, usually because of an issue with the gas supply or the spark that starts the flame.

Vokera Hydra 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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