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Hi guys, I recently built a home brew PID controller modeled after Electric Brewery's control panel. I have a HERMS system. I purchased 3 Inkbird PID controllers (ITC-100VH). My system is 240V, 5500W elements using PT100 RTDs. I have 40A SSRs. I tried to calibrate the system in auto mode...

Who woulda thought... went through 4 Fotek 40A SSRs and all were bad from the start... ordered these, Mager SSR 40A (thanks Doug for the recommendation), and everything works like expected. Cheap China crap has a place, just not in powered electronics!

Who woulda thought... went through 4 Fotek 40A SSRs and all were bad from the start... ordered these, Mager SSR 40A (thanks Doug for the recommendation), and everything works like expected. Cheap China crap has a place, just not in powered electronics!

Yessir - even with the DC leads disconnected, as soon as relay is close, SSR fires.

Thanks for the tip got 2 of them just this morning

Good info - I felt the same way! I ordered 2 SSRs and had this issue, troubleshot it, determined SSrs are the culprit. Ordered 2 more SSRs, although they WERE Fotek from a different supplier and still the same results. I thought, no way 4 bad SSRs?? But the wiring is very simple and easy...

Completely understand all this (I am an engineer). What I don't understand is why the element is heating while the SSR 12VDC control wires are completely disconnected and the SSR lamp is also off (which it should be with wires completely disconnected from the PID). When I unhook one leg of...

New SSRs - left the VDC control wires off, no connection to the PID controller and yet they are still powering the element???

EXACTLY the brand - I will crack one open...

Good tips - I have a huge heat sink designed to dissipate 10X the power i draw and used thermal paste.

Good post and info. Both + - ssr control leads disconnected and ssr still fires element

Great post. All leadS to ssr disconnected and element still fires.

Got the chance to troubleshoot today - both SSRs are faulty and remain constantly on even with 12VDC signal wires disconnected. I have 120VAC on both terminals at all times, therefore the heating element was always 100% on.

Got the chance to troubleshoot today - both SSRs are faulty and remain constantly on even with 12VDC signal wires disconnected. I have 120VAC on both terminals at all times, therefore the heating element was always 100% on.

Worked out the alarm circuit - it's resolved. However, element always remains powered on one leg coming from the power bus, even w/ the PID not powering the SSR that controls the other leg of the 240V circuit. I found this by removing the 120V leg that goes directly to the relay that powers...

Mine's wired the exact same way....

Sorry - drew that up at work away from brew system. Same answer, 2 hots go to element, and the Neutral is actually a ground, ensuring if something shorts, all kettles are grounded and will not be live and waiting to bite me...

Worked out the alarm circuit - it's resolved. However, element always remains powered on one leg coming from the power bus, even w/ the PID not powering the SSR that controls the other leg of the 240V circuit. I found this by removing the 120V leg that goes directly to the relay that powers...

I'll triple check it but it's wired properly according to their diagram