Defrost termination / fan delay operation

[@dennisbarringer930]

Your videos have been extremely helpful to me as a new technician can’t thank you enough for all the time you spend helping others.

[@Cscrefandhvac]

Thanks man glad it could help

[@Randylazz]

This is an excellent video been doing Refrigeration for 20 yrs and I always tell the new guys to learn the electrical side great job..............

[@nakiapringley5391]

Great video in describing the DFTD switch. It really helped paint a mental picture in my mind on the switch and what to do in certain scenarios. Appreciate it.

[@Cscrefandhvac]

Glad it could help

[@carlosemmanuelgarciabrito791]

Just learned something new today this vid is over a year but today it was precious for me keep it up I'm always watching .

[@Cscrefandhvac]

Thanks man appreciate that

[@jacobherndon8947]

Hey man I’m on a weekend call rn by myself, new to the job, and you just bailed me out crazy. Thank you for this

[@andydepiazza2142]

Thank you sir for your videos! Keep up the good work!

[@curioushvacguy6876]

Very nice- im gonna pass this along to some of my newer guys

[@Cscrefandhvac]

Curious HVAC Guy cool man glad it can help 👍

[@mariogonzalez6558]

Just fixed a freezer today thanks to your video. Plus a you got a new subscriber!

[@Cscrefandhvac]

Thanks man I appreciate that and glad the video could help 👍

[@pablorueda2287]

Thank you for taking time to show how it works

[@justwork_hvac]

Thanks for sharing your time with us the community...I'm starting to learn walk in freezer/coolers

[@1hotc]

Thanks for this vid it clarified a lot for me and helped me diagnose my freezer issues! Great job.

[@winkhvac62]

Chris I’m New in the Restaurant service this help me thank you.

[@hvac01453]

The only thing I’d say about that is, those temperatures on that sensor are not reflecting the coil temperature unless they are mounted ON the copper tubing as some are. Now, the reason it’s 35f ( not cold enough to freeze the water on the coil ) is that this particular sensor is mounted to the tube sheet end area. So, the coil is hopefully colder than 35f, otherwise it will blow the water droplets off the coil and freeze on your floor. I think the better ones, are the 25f sensors that clip onto the U bends. The reason is, what if the cabinet/ box is plenty cold even after defrost and the sensor chills down quickly due to a very cold box temp, before the coil can freeze the water on the coil..... just a thought. Also some of these units have a drip timer that allows water to drip off the coil.

[@Cscrefandhvac]

hvac01453 yes great point man 👍 this was the only types I had on my truck to show as an example . Most units that are in a control system have a drip time thanks for mentioning that. I didn’t mention that in this vid 👍

[@sterlingarcher46]

Nice one Chris 👍 I wish I had had a teacher like you back when I was in trade school !

[@RayRay-nb7tn]

Nice example if how it works and when you get in a jam what you can do. Thank you for the video and stay (cool kid) and HVACR ON AMERICA!!!

[@Gcanno]

Awesome Video Short and Concise , If you link your other video you did on the Timer in the description or on the screen it might help get more subs, helps reinforce the operation especially for newbs like me , been a sub for while and your channel does deserve more subs.

[@Cscrefandhvac]

Gcanno thanks man I appreciate that 👍

[@raytinsman7815]

Its clever wiring really, time clock is controlling one side of voltage and dtfd is controlling the other. Its hard to explain on the phone with a tech in trouble. good job

[@hg2.]

dtfd?

[@philltafolla]

Good Stuff Cris . Can you do a video on relays . They they work . Like SPST, ir DPDT , DPST , those relays made by Omron , I cant really figure those out . If you need some P#s , let me know . Shout out from SoCal

[@justincanterbury2561]

Thanks bro this gave me a better understanding

[@condadopr]

best explanation and to the point..

[@libertyrich555]

Trenton brand has been a thorn in my side for years, I'm not selling them any longer. Just today I told my supplier to get these in and then I find this video. Apple storage has defrost heaters but the temp isn't lower than 29F, so all I need is to get the coil temp down so the heat doesn't blow into the room. Any suggestions what to set this at, if not then I'll have to do trials to find the sweet spots. GREAT video.

[@harjinder7435]

nice Vedio you are a great teacher thanks

[@ehdz2165]

Love your videos man great job

[@carloscervantes618]

I really appreciate your help! Great content!

[@Cscrefandhvac]

Carlos Cervantes thanks man. Glad it can help

[@gregbowman3598]

Good video brother keep up the good work

[@jimfurnell7657]

Great video and really informative, I've been doing ac systems and heat/cool rooftops and have been very much interested in the Refrigeration process. The question I have is you mention the book and would like to get more information on it and maybe a link, thanks again for your videos and keep them coming.

[@Cscrefandhvac]

Jim Furnell you can go to the heatcraft website and all the diagrams should be there somewhere on the site

[@jimfurnell7657]

@@Cscrefandhvac thanks for your help and keep up the great quality videos

[@derrickgarcia303]

Thanks for sharing

[@guardianmn]

Thank you for taking your time and making this educational video sir

[@jonbinley8927]

I’m down in Texas and came from Boston. Guess you are too by the accent: I need to jumper a Klixon and don’t wanna fuck it up

[@Cscrefandhvac]

Nice man. Yup from Boston hahahah. Thanks for watching bro

[@acrraideredward9773]

Great video! Currently doing residential and commercial ac work but I'm looking to move up into refrigeration. Was curious to know where exactly you can get that book. Really want to expand my knowledge. Keep those videos coming my brotha

[@Cscrefandhvac]

AC Raider Edward they come with new heatcraft units or with the new evaps. You can also go to the Heatcraft website and all the diagrams should be there as well

[@harrydickson4575]

Another excellent video 👍👍

[@Cscrefandhvac]

Harry Dickson thanks brotha !

[@SombraLocs]

Always great videos!

[@NorCal-refrigeration]

Atta boy! Great video🤘⚡️🤘

[@Cscrefandhvac]

Nor-Cal Refrigeration & H.V.A.C thanks Dave !! How you been brotha ??!!!

[@NorCal-refrigeration]

CSC Refrigeration and Hvac busy as heck at the day job. Steady at not-cal. Gonna fix a water heater after work. Maybe I’ll film it.

[@Cscrefandhvac]

Nor-Cal Refrigeration & H.V.A.C nice dude ! It’s been mad slow here man. Warmest winter ever , we need it cold here to be busy in the winter

[@NorCal-refrigeration]

CSC Refrigeration and Hvac last year here at the ski resorts 400” of snow this year 150” they just closed one down lack of snow.

[@Cscrefandhvac]

Nor-Cal Refrigeration & H.V.A.C ya man it’s crazy this year

[@johngolding4229]

Thanks. Easy to follow.

[@konstantinostsoukalas362]

Thanks for the great videos

[@ALEMAlem-kl7mp]

Veri good

[@goldhammer561]

Great video great informative

[@xraybravo7180]

Great explanation

[@arshadjamil9522]

nice explanation bro

[@franciscojhernandez3373]

Thanks

[@jfs520]

Awesome vid thank you

[@Blinx559]

Great video thank you 👍🏽

[@javaidiqbal4143]

very good video sir

[@jpcallan97225]

Could you publish the URL/link for the Heatcraft manual used in the video?

[@tylerducomb4120]

I’m working on a heat craft evaporator that does not currently have a defrost termination fan delay. Should I be looking for a jumper between N&F to remove in order to install a defrost termination fan delay?

[@user-mr8uv6ue4h]

Are we wiring the HL in series with the heating element? Thx

[@nogarasj]

Thanks Bro! Easy explanation for a beginner like. By the way, what’s the name of the book of diagrams?

[@Cscrefandhvac]

The diagram is from Heatcraft comes in the boxes with new units, but you can get those diagrams from their website

[@pablofranciscogutierrezfor5899]

Ver y good

[@jsmith7348]

can you force the defrost heaters and fan on at the same time ? is it worth it to de ice a case?

[@Cscrefandhvac]

Yes you can but you don't want the fans running while the heaters are on

[@libertyrich555]

What Ranco model is that, and do you like Ranco over Penn?

[@marcoselgaucho1106]

You must be from Boston!😂am I right😆

[@Cscrefandhvac]

Yup hahahaaha

[@Jeepjones85]

Where did you get that heat craft book ? Thanks

[@neogio9132]

What books do you guys recommend for learning HVAC controls? Any suggestions would be greatly appreciated.

[@michaelmascoll9550]

About the books with the diagrams.. can you please put the link in the comments section or so

[@Cscrefandhvac]

They come with new heatcraft units and should also be available on heatcraft website

[@deenamat439]

You Have Tecumseh PLP760E Evap connection diagram ?

[@wdennis8]

What is the title of that book?

[@johnd4348]

I am a HVAC tech, and my company I work on now, throws us on to Refrigeration equipment. Its not in my wheel house. Very confusing the sequence of operation. Makes me want to quite this business altogether.

[@Josh-gb6mv]

There’s an old saying, you can teach a refrigeration guy to do air conditioning but you can’t teach an ac guy refrigeration. When I started doing commercial the only background I had was residential HVAC. You just have to want to learn and have an open mind and you can pick it up.

[@theholyquran755]

Thank you Chris, Nice and clear explanation, kindly, can you provide me with a copy of this wiring diagram

[@Cscrefandhvac]

Dr Moamar Hussain Al-Houshan you can find all the diagrams on the heatcraft website

[@Zapgod]

If your freezer defrosts, but wont close to cool. Would you bet on the defrost termination being the problem?

[@Cscrefandhvac]

It’s a very good possibility or could the the defrost clock also . Could be a couple different things

[@broncheemims8493]

Where can I the book or manual

[@joeneal21]

Hey can you add a link for that book would love that thanks man!

[@Cscrefandhvac]

The books come in the box with new Heatcraft / Bohn Evap coils

[@mychoclabwinston]

Done the N to F plenty of times, why don’t I carry these in my truck 😂

[@sharky5570]

Great video, just went into a warehouse size freezer with 8 evaporators using 407 refrigerant for a negative 10 temp setting. Anyways getting 95 % humidity in this place. Box was engineered for a 10 degree set point and walls and ceiling are 6 inches. I think this is the problem what’s your take?

[@Cscrefandhvac]

Sharky55 what are you asking for the problem ?

[@sharky5570]

CSC Refrigeration and Hvac just asking what the wall insulation thickness should be on a box Designed for -10 degrees.

[@Cscrefandhvac]

Sharky55 usually 5-6 inches

[@sharky5570]

CSC Refrigeration and Hvac thank you sir

[@MAKCOH818]

I’m watching the video now ! Kind of complicated

[@SergioRodea-nw9tf]

Hi, soo if the evaporator doesn't get cold the fans will not come on?

[@Cscrefandhvac]

Yes

[@brianpan57]

So defrost termination shouldn't be triggered all the time right? The defrost clock timer should switch to refrigeration before it trips dtfd. Or does it need to be tripped all the time for refrigeration to come back on

[@Cscrefandhvac]

Brian Pan the clock should switch. This is just for if the coil wasn’t very frosted and the system didn’t need to run through a full defrost cycle

[@brianpan57]

@@Cscrefandhvac oh I seeeeee

[@brianpan57]

@@Cscrefandhvac thanks

[@jessehndz3124]

If I may ask, where can i download the book for the diagrams?

[@Cscrefandhvac]

Heatcraft website should have diagrams

[@samirbelkacemi3321]

thanks for ur video, very helpful . can u send the link for book diagram.

[@Cscrefandhvac]

samir belkacemi you can get the diagrams in the Heatcraft website

[@samirbelkacemi3321]

@@Cscrefandhvac thanks man .

[@ktwach1599]

Hi can you please send me the name of that book thank you

[@Cscrefandhvac]

It’s just a Heatcraft booklet that usually comes in the box with a new evap coil or condensing unit. I’m sure you can go yo Heatcraft website and they will have diagrams there or be able to look up this booklet online.

[@lesliedaisley7846]

What is the name of the book can you send us a link

[@Cscrefandhvac]

It’s the book that comes in the box with a new heatcraft evaporator or unit. Im sure you can look up these diagrams on Heatcraft website also or even ask your local supply house if they have some lying around that came with units.

[@eddieacevedo9601]

Can a walk in freezer be change to a cooler by the temp control?

[@Cscrefandhvac]

Eddie Acevedo no , you have to disconnect the heaters and this fan delay and wire the fans straight so they run all the time

[@eddieacevedo9601]

@@Cscrefandhvac thank you for steering me in the right direction and the wisdom you provide with you're channel thanks til the next one ☺️

[@eddieacevedo9601]

@@Cscrefandhvac where could I get 208v for fans if I disconnected the heaters and fan delay should I add a jumper from TB6#N to TB1 #1

[@Cscrefandhvac]

Eddie Acevedo I’m not sure I’d have to see it.

[@deanmohamed7575]

Too many morons out there just bypassing this switch and turning the box into an igloo. Do the right thing and change it out.