Heat press not heating up

[willd]

AH! Your transformer isn't actually a transformer, but as you previously noted an SSR, which is a solid state relay. I didn't pick this up until I read back through the thread, which was prompted by your reply to Wayupnorth, as it didn't make sense to me.

In general SSRs have a pilot light to confirm that they have been triggered, which as you note, isn't showing.

So I think it's pretty safe to surmise that that's where the fault is...

Though of course you could test this by checking for a voltage across the input of the relay when the press is supposed to be heating. They are usually DC and less than 50V, but prudence when testing is always good!

Another possibility is that the voltage that should be supplied to the switching contacts of the temperature controller is missing, in which case there won't be a signal to trigger the SSR...