How to wire controls to a walk in cooler

Subscribe to Channel:

This video by Nor-Cal Refrigeration & H.V.A.C was liked: 973 times

If you like this video by Nor-Cal Refrigeration & H.V.A.C, please support their CHANNEL by clicking on the SOURCE link below and Subscribe.



Featuring Your Videos:

By featuring your videos on our blog, your videos will receive hundreds of views daily from our website visitors, you get a backlink to your channel for followers to subscribe to your channel. This is a win/win for SEO for both of us. If you would like your videos or channel highlighted and premiered on our blog for FREE, please contact us.

However, if you no longer want us to premier your channel, and want us to remove your video and not feature your channel anymore, please contact us.

Video Post Disclaimer:

The information contained in the multimedia content (“Video Content”) or post content in general, represents the views and opinions of the original creators of such Video Content or post, and does not necessarily represent the views or opinions of The mere appearance of Video Content or the post on the Site does not constitute an endorsement by or its affiliates of such Video or Post Content. 

The Video Content or Post has been made available for informational and educational purposes only. does not make any representation or warranties with respect to the accuracy, applicability, fitness, or completeness of the Video or Post Content. does not warrant the performance, effectiveness or applicability of any sites listed or linked to in any Video Content or Post.

Affiliate Disclosure:

This post and description may also contain some affiliate links, which means that the post creator may receive a small commission at no extra cost to you if you click on some of the product links and decide to make a purchase. This channel is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to

Copyright Issue:

If you find any of your copyrighted material in this post or video, please contact us, so we can resolve the issue.

All rights reserved by respective owners.

28 thoughts on “Basic walk in box control wiring

  1. owentp says:

    Awesome explanation,Dave. May have 1 or 2 other questions after you answer this. We have a new heatcraft model where the thermostat is built in. Do you have any pearls of how to wire that? Thx.

  2. Ivansgarage says:

    what if you didn't have a T-stat or solenoid valve on the evaporator, less problems, couldn't you control box temp with the LP control on the condensing unit? last time I checked, pressure is temp… did this stuff for thirty years…

  3. Abdorakeeb Naji says:

    Very good vedio…if you get a chance please will you make another vedio for head pressure troubleshooting on top units and how to fix that issue. I seen this problem a lot compressor turned on for a seconds then shuts off over and over…thank you

  4. Floyd Davis says:

    Great video, I just had one question, for the solenoid valve. I re watched the video many times. So you land L1 for the solenoid valve on N.O ??? I thought it would go on N.C since the solenoid valve opens when energized and is in the N.C position when when it’s not energized by the Tstat… can you you explain that. Thanks in advance

  5. BluegrassDNA says:

    Thanks for the basics. Also I can add set the low pressure cut out above vacuum on those scroll compressors if they pump down to a vacuum it kills them quick, right? Use your gouges to set the lpco switches.

Leave a Reply

Your email address will not be published. Required fields are marked *