Johnson temp controller reads high sometimes

[BWN]

Every now and then I check my keezer and it is running and the sides are hot. I look at the temp controller and it will be reading 70 degrees or high 60's. Obviously it is not that warm inside of there. I will shake the probe a little and it will stop running and the controller will read 30 degrees. I have no idea why this is happening it doesn't matter where I put the temp probe for this to happen. I am afraid this will kill my compressor. Any ideas?

 

[worksnorth]

So I saw this post quite a bit earlier, I was hoping somebody that had a similar experience could help out. Nobody has sooooooo....
I've really no idea why this is happening, the only thing I can figure is that there may be a loose wire inside the controller and when you jiggle the probe wire it makes some sort of contact? Perhaps you can pop the cover and check ALL the wiring connections.
Wish I could be of more help, I've got a Johnson controller and have zero problems with it.
Cheers and good luck!

 

[Breweralex]

Most likely a problem with the probe. They sell replacements that are easily installed. Also, are you opening your keezer often? Do you have your probe submerged in liquid,

 

[mageac]

my probe crapped out recently. turns out ive had it submerged in water for a few months and its not waterproof, just took a little while for the water to ruin it. a new one costs me less than 10 dollars.

 

[BWN]

my probe is not in liquid. I spliced it and sealed it with heat shrink, maybe I didn't get a good seal. I'll try and put another piece on and see what happens.

 

[day_trippr]

my probe is not in liquid. I spliced it and sealed it with heat shrink, maybe I didn't get a good seal. I'll try and put another piece on and see what happens.

Umm....I'd check the splice first, not the shrink tubing. Shrink tubing doesn't know anything about "jiggling", but a bad splice does...

Cheers!

 

[mpcluever]

I heat shrinked some home-made temp probes and have had some problems with water getting in. When I re-do them, I'm going to try some of that liquid electrical tape stuff that's basically rubber/plastic stuff that dries to form a seal.

 

[BWN]

Umm....I'd check the splice first, not the shrink tubing. Shrink tubing doesn't know anything about "jiggling", but a bad splice does...

Cheers!

good idea

 

[BWN]

I respliced everything 2 days ago and haven't had a problem

 

[HopSong]

Where does the water get in??? My probe is a flexible metal tube down to the large bulb. It is all soldered. I was thinking as I read this thread that the water was attacking the probe.