Tell me how to bypass my Summit thermostat...

[Localnet]

Need some help, as this is driving me nuts! I have the Summit under counter unit, and she will not get below 40 degrees with a 1/2 barrel of beer in her. It cycles normally, cold plate has nice fine coating of frost from top to bottom and is defrosting normally.

I have done all of the mods, tower cooler, PC fan, insulation in new 3" tower, new Perlick, added the Johnson Controls thermostat, tweaked the Summit thermostat by doing the screw trick and finally removing the temp sensor from behind the cold plate.

How do I bypass the Summit thermostat? There are two wires that enter into the fridge compartment and clip onto the thermostat. I am assuming one is 115 volt and the other tells the compressor what to do. If I splice these two wires together, will the compressor run continually? I can then let my Johnson Control thermostat control the system and hopefully get my pours down into the proper temps in the 30's. Right now I am pouring at 45 degrees, not acceptable!

Help me out guys, I am po'd and thirsty!

Mike

[Localnet]

Need some help, as this is driving me nuts! I have the Summit under counter unit, and she will not get below 40 degrees with a 1/2 barrel of beer in her. It cycles normally, cold plate has nice fine coating of frost from top to bottom and is defrosting normally.

I have done all of the mods, tower cooler, PC fan, insulation in new 3" tower, new Perlick, added the Johnson Controls thermostat, tweaked the Summit thermostat by doing the screw trick and finally removing the temp sensor from behind the cold plate.

How do I bypass the Summit thermostat? There are two wires that enter into the fridge compartment and clip onto the thermostat. I am assuming one is 115 volt and the other tells the compressor what to do. If I splice these two wires together, will the compressor run continually? I can then let my Johnson Control thermostat control the system and hopefully get my pours down into the proper temps in the 30's. Right now I am pouring at 45 degrees, not acceptable!

Help me out guys, I am po'd and thirsty!

Mike

Replying to my own thread....

I shot a pm out and Phil (pvs6) got back with me, here is his reply...

Mike,

You are correct that connecting the 2 wires of the thermostat results in it running non-stop. I don't think it's 110 volts at the thermostat more liKely it's a relay switch at much lower voltage but when they are connected the switch is in the on position. Your temp. controller will then be needed to take over the control of the compressor. If your unit is healthy it should be able to get below 29 F. the temp beer freezes at so be careful setting the temp on your controller.
Phil V. S.

Again, thanks Phil!

[mikefl2]

same issues

i am having the same issues with this model. i saw another post where you did several mods. how did those work out? where can i find out how to do those other mods though?

[psychodad]

There is a good chance that that is a full voltage thermostat (110 vac), unplug and don't assume that that it is a much lower voltage. Any connections you make need to be worthy of the full 110 volts.

[JonW]

Yes, it is 110V right at the thermostat (you can see the power cord coming right into it).

I just picked up this model last weekend and have been playing around with it tonight to get it lower. There is a recessed adjustment screw on the right side of the thermostat. You don't even have to remove the extra thermo cover to adjust it. I don't have mine dialed in yet, but it did drop from 40 to 32 after adjusting the screw. I'm trying to get it to hang around 34-36.

[radarthis]

I know this post is a bit dated, but just wondering if you recall which direction you ended up having to turn the screw to go colder? I have a SBC4903 from Summit and am trying to dial it down a bit. Thanks!

Yes, it is 110V right at the thermostat (you can see the power cord coming right into it).

I just picked up this model last weekend and have been playing around with it tonight to get it lower. There is a recessed adjustment screw on the right side of the thermostat. You don't even have to remove the extra thermo cover to adjust it. I don't have mine dialed in yet, but it did drop from 40 to 32 after adjusting the screw. I'm trying to get it to hang around 34-36.