What the manual says
Manufacturer manualReset key error. The key was pressed more than 5 times. To reset the error cut off the main power.
From this model's manual
Verified against the Vokera Verve I 50 installation & service manual, page 32.
DIY fix possible
Switch off the power to the boiler using the main isolation switch or fuse spurWait for at least 60 seconds to allow the system to fully power down and clear its memorySwitch the power back on and see if the boiler resumes normal operation
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