![]() In all these cases the first thing to do is disconnect the power from your Jura machine and allow the machine a few minutes before reconnecting the power - this will confirm if it is a hard fault or just a glitch. This in turn can often be caused by a failed sensor allowing the thermobloc to overheat. This may be because the thermal fused cords which supply the thermobloc with its power are designed to "blow" cutting power if the thermobloc gets too hot as a safety precaution. In other words the sensor has failed and is either not sending a signal or sending an incorrect signal, or the thermobloc is not heating. ![]() They all refer to the Jura Thermobloc (water heater units) and temperature systems and will indicate that the Jura machines logic board is receiving a signal that is outside of expected tolerance values. Jura Error 2 and Jura Error 4 are the most frequent but Errors 1, 3 or 5 may sometimes show depending on the software version and the amount of thermoblocs in the machine. ![]() Once you have checked the manual and are familiar with the correct operation, we have provided below a selection of frequent issues that we have come across over the last 15 years, which may help to get you going again or at least to know what sort of problem you are dealing with.
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