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Question: The warning „emergency stop“ appears on the display at 120°C, why?

The emergency shutdown kicks in at 120 °C in order to prevent overheating of the machine, which caused by onforseen behaviour of the software or hardware. After the temperature has dropped below 100 °C, the PID will resume normal operation. When in steam mode, this message will apear regulary (temp. above 120 °C), but doesn’t influence the function of the machine since steam is not controlled by the PID.

Question: why does the heating SSR not function properly?

A common mistake is that the signal pin is not connected to “+”, but to the “-“ connector of the SSR. Please double check if you have connected the SSR correctly

Question: My PID values don’t seem to work, e.g. the temperature overshoots

Please have a look at our PID-value list PID-values, where many working values are listed for cold-start, normal operation and brew-detection. In case you want to ask for help in the chat, please explain the exact problem (best would be to also send the values from Blynk).