How to verify a PID controller board

[capocasa]

Hello!

I have the attached PID controller board for coffee machines. It's a sort of simple device based on an atmega micro, a bluetooth board and some triacs to do the switching, and a temp sensor for the boiler.



My issue is that after putting it into the machine, the bluetooth serup works but the water does not heat when it's supposed to.

I am unsure how to verify the device works.

My thinking is to verify the triacs using a transistor tester, and then connect it outside of the machine with secured cables and use a multimeter to check if the expectage voltage is output to the correct outputs.

But before doing that, I'd love to know if you think I should be doing something else. Thanks!

[Poroit]

G'day capocasa,

Have you checked the heating element is intact by measuring its resistance?

[capocasa]

Hello!

No but it works using the regular thermostat. Bit I'll remember I can do that, thanks!!