Typical wiring for defrost on a single evaporator freezer 

Some of the very BEST (also no cost) education I’ve gotten was just reading installation manuals for equipment. I kick myself often because for the first 5 or so years, I didn’t read any of them and now…. EVERY CHANCE I GET! Seriously, it’s been some of the most enlightening stuff and has saved me hours of headache.

I wish someone explained it to me like this when I first started out Nicely done.............

Nice thorough video Chris, wiring can be tough, always helps to see it, I like how you threw in the schematic helps the young guys as always appreciate all your help.

As always, great video. I always learn something even when I've done it 100 times😊

You did a good job explaining the topic. I understood what you were teaching. Keep up the good work.

Thanks a lot boss! Always looking forward to watching your videos! You’re the man😎🤙👍

Awesome can’t wait to see what you got coming down the road.

Thanks Chris for share your experience with us.

Thanks so much for taking the time making the video to share your knowledge. Huge help to us new guys in the HVACR field, much appreciation. keep up the great work.

Thank you so much you made my job easy for me I appreciate you for doing these types of videos..

Hey Chris, Sorry to hear about your injury, get better and git after it again.

Thanks for the video I hate coming around a stubborn old tech who don’t want to explain anything, god bless you and RU-vid for this

I appreciate your explanation it’s great I’m on Cape Cod and I’m starting to do a lot more freezers and this will help....👍🏿👍🏿 lets go ☘️☘️

Great video I am new to light commercial refrigeration so these walk in freezers where a little tricky for so thank you for the video

Thanks man! I just learned everything i wanted to know about my freezer wiring!

very direct and laid back delivered lesson... it should help anybody in this field

Thank you for your time and teaching

Great breakdown and explanation

Love it! Thanks for the tips

Where were you when I was 24. Course that was in 1974 but dang what we learn over the yrs. thanks for explaining the magic. Ya make it easy. 👍🏼😊

Thanks boss, this playlist you made is amazing. 10/10. you won a spot in heaven for sure 😂

Great info!

Great video, I'm learned something today ^_^

I appreciate this video, Thank you 👍👍

really good explanation thats what I need, thanks for your video...

Best video on the Internet on this subject

All electronic here in Europe. And belive me, more than once I wished to put mechanical on more than one system. I love that simplicity.

Thank you for your help

Man u really help me understand this. Thanks so much broo

Thanks for the information

Thanks man great video! I'm working on a 404a freezer Tomorrow morning and the schematic is toast. The condensing unit is running and the solenoid is energized and thermostat is working ok but the fans aren't coming on. I'm thinking its probably the defrost termination switch but this video was a lifesaver with no schematic. Thanks buddy!

Thank you for your helpful video

Thanks a bunch!

Awesome video

Thanks for your time 😊

good stuff bud.

Good job thank you

Yes. good explanation. could have used this 25 years ago.

You saved me from creating one for sum techs Thnx

Nice Chris!

Great tutorial , Chris 👍 I wish I meet veteran techs as yourself and I would have done your head in with tons of questions ! Instead , I came across patronising know-it-all cut-thoat people who almost made me give up the trade ! Nice to see there's still old school good guys like yourself out there , much appreciated bruv . How's the back ache btw ?

thank you master , learn a lot ! keep up / marlboro :)

Thank you👌

Thanks alot am young and am going through the same thing

Thank you very much. I appreciate it. More videos? When?

Thx

👍👍👍👍

Glad you didn’t use a Grasslin electronic clock, I hate them. The Paragon mechanical clocks are the best IMO. Thanks.

I'm working on a turbo air walk-in freezer. At start up, the fans would not run because the fan delay was not cold enough. What will cause that fan delay to get cold enough to kick the fans on if the room is at 65 degrees Fahrenheit. Does the compressor just keep kicking in and out on low pressure till the room gets cold enough?

Hey buddy I’ve been running residential and commercial hvac for 10 years. I’m installing my first walk in freezer and a video on setting up cut in and cut out pressure would be awesome. Also this freezer didn’t come charged so a video on charging a freezer from scratch would be awesome thanks

Question? I'm working on a unit and when it terminates defrost either by time or temp the solenoid valve opens and the fans immediately energize after the soleniod valve. All Brand new equipment.. I'm thinking it was originally wired wrong but confused on were they wired it wrong?

Hey Chris haven’t heard from you for a bit hope your back is better, take care man, hope to see a video soon

Hey bud , thanks for doing these type of videos, I really appreciate it. I have a Traulsen freezer G22010 and it keeps on freezing up. Im stuck on why my heater coil is not working. today I tried once more but were can I get the diagram so I can narrow it down to were the problem is. it is an old freezer I know. but i love fixing stuff and now is about feeling proud of getting it fixed. My parents have owned it since 1998 I believe, running our first bakery. 4 years ago I took over one of my parents locations, we are Dorcas Bakery, and although my Dad wants me to get rid of this well built freezers, I have been tackling down issues as they come due to the age of the unit. there is no other better unit for me, but years of service on this unit are taking a toll on it. First , the clock needed to be replaced," EASE ONE" done! Then, I fixed a short, some wires got to old and I fixed it 3 years ago. 3 months ago, I noticed it kept freezing up and the heater coils would not turn on. initially the wiring as faulty and old, I swapped it, now it has a good connection (checked with multimeter)...bottom line Im stuck , what is my next route?

If you see 120 volts on the x terminal all the time is this normal? It’s running a gravity system coil no fans or heaters I don’t understand how they have this clock wired

The defrost timer should be located before thermostat or after thermostat?

Any thoughts about sequence of operation. Wiring a new WI freezer (everything is 2 speed evap fans now days with extra relay to control speeds) and seems like heat craft gives no provision for compressor to shut off on pump down before defrost heaters come on. Max breaker/ fuse size on nameplate does not seem to reflect compressor/ condenser motors running amps AND heater AMPS to be drawing at same time. Defrost kicks heaters on same time as solenoid closes and compressor starts pumping down Do we change factory control set up/ add more controls or just oversize what nameplate says for fuse sizes?? Small 1.5 HP WI freezer box this is. Dawned on me with getting proper fuse sizes. I would hate to single phase a new 3 phase compressor because a fuse blew prematurely! What do guys think/ do?

Thanks for the videos, Great Explanation, Since you are an Old Champ in this field, What should be normal operating pressures for refrigeration units as far as Walk in Cooler or freezer and the same for reach Ins, what kind of sub cool and super heat should we expect from these units in order to trouble shoot these units properly ?

Were can I get that book?

Hi, for some time clocks I have seen defrost heater resistor receiving power directly from the time clock. In other cases, there is a separate contactor for defrost heater, and the time clock is connected to the coil of the defrost contactor. What determines this difference in wiring? Thanks.

Any links to the books?

What terminals do you use if your walk in has a solenoid wiring harness? Is it N and 4?

You always make really informative videos. Just a quick question: do you ever do “simpler” residential or are you dedicated commercial?

what about the condensing unit?

hello sir question if i put the unit in defrost on the timer it goes to red and then switches right away to refrigeration it goes to green could that be caused by the dtfd or because the unit is still warm 40 degrees and the fans come on right away any help would be great thank you for your time

This is an old reach in cooler it does have a solenoid on it too

What kinda book do you have?

Chris were you been buddy? Hope your well.

so the compressor has its own power supply from the panel?

Where would you wire your condensate drain line heater in this application?

Can you jump N and X to exit defrost VS twisting the timer to exit defrost?

It goes in defrost like normal but I don’t know why I see 120 volts on x no matter what the clock is in

got a link for a copy of that heat craft book?

I just replace a new 3 phase condensing freezer but is a little different and I am alitle lost brother

You ok, have not heard from you in almost a month

You also holding a defrost heater on your fingers😂

I can smell that cigarette

As a fridge electrician I am ashamed of just how stupid and lazy to learn most of my competitors are. For that I would like to thank them. I'm called on several jobs to sort out attempted control wiring. On my way today to charge a premium rate to get another one running. This one is special as the customer tells me he is an "engineer". Wonder where he parks his train? TOG out!!

U talk to quick man lol need to watch this over few times n let it marinate. Slow down a little

hire a tweaker to hold your camera.... their hands are steadier