Johnson Controls A419GBF-1C - Electronic Temp Control Reviews

Customer Ratings:

I have owned probably nine of these, including the two I just bought. In concept they work great. They have dip switches to change from cooling control to heating control and are not rocket science to wire. In my winery application they just are not robust. They are not mil. spec. and lack even an o ring gasket. Heck they have friggin mounting screw holes through the housing! I will give Johnson the benefit of the doubt and assume the three of these I have that have gone T.U. did so because of operator error (moisture). I would gladly pay more for a mil. spec. housing! The real trouble is that I don't know of any good alternatives. Buy it and hope for the best my friends.

Update: These are now available in NEMA 4x weather tight enclosures. I am trying a couple of those. They cost about $15 more. I would recommend that type enclosure unless you have a very benign and dry environment at the controller location.

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I would highly recommend this controller for many applications. You can use it to power something via the power that supplies it (110, 220 or 24 v depending on the model, I think) or just use it to open and close a circuit, which is how I use it to control steam boilers for a heating system.

Yes, it looks and is very industrial. If wiring to you means plugging something into an outlet, then don't buy this. You have to know how to wire something, read a wiring diagram and understand how your system works to correctly install and use this controller.

But if you do, this controller is a bargain and has many helpful functions that you won't find on a conventional made for the consumer market controller/thermostat.

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should have paid attention to what I ordered. There is no plug-in cord in the item picture. There was none in the box. That's why it's cheaper than eleswhere, I now have to go out and buy the electrical cords separate.