HVACR Service Call: Walk In Refrigerator Not Cooling (Refrigerator Compressor Not Starting/Working)
HTML-код
- Опубликовано: 15 сен 2023
- HVACR Service Call: Walk In Refrigerator Not Cooling (Refrigerator Compressor Not Starting/Working) HVACR (Heating, Ventilation, Air Conditioning/Refrigeration) Refrigeration Emergency Service Call (Walk In Refrigerator Not Cooling/Walk In Refrigerator Not Working) Beer Cooler Not Working / Compressor Not Starting/Working / How To Check Compressor / How To Check Run Capacitor/How To Check Start Capacitor / Commercial Refrigeration / Walk In Cooler Troubleshooting / Walk In Freezer Not Cooling / Walk In Refrigerator Troubleshooting / Walk In Refrigerator Not Working / Commercial Refrigeration Training
GoPro HERO8 Black (Camera Used In This Video)
amzn.to/3q4FmEz
Veto Pro Pac TECH MC
amzn.to/3gURJyZ
Fluke 902 FC HVAC True-RMS Clamp Meter
amzn.to/39wvwiK
Fieldpiece ADK7 Deluxe Silicone Test Lead Kit
amzn.to/3VNYXDv
Klein Tools ET600 Megohmmeter Insulation Tester
amzn.to/409iNvu
Supco M500 Insulation Tester/Electronic Megohmmeter
amzn.to/42oy0ua
Fluke 1AC-A1-II VoltAlert Non-Contact Voltage Tester
amzn.to/3FcWElQ
Fieldpiece JL3KR4 HVACR Charge Kit (Digital Gauges/Probes)
amzn.to/3E4W0Fr
Fieldpiece SPK2 Folding Pocket In-Duct Thermometer
amzn.to/3mi8Fih
Fieldpiece SPK3 Folding ROD Dual Temperature Thermometer
amzn.to/3FbDufQ
Milwaukee M12 2-Tool Combo Kit 2598-22
amzn.to/3CtCRNC
Milwaukee Cut 1 Dipped GLOVES L
amzn.to/3s8H18O
Milwaukee 2351-20 M12 LED Stick Light
amzn.to/3rVJKEK
Milwaukee 48-22-1985 Fastback Hawk Bill Folding Knife
amzn.to/3e53ygW
Milwaukee 48-22-1500 Fastback Compact Folding Utility Knife
amzn.to/3qazJkC
Milwaukee 48-22-4041 Iron Carbide Core Large-Looped Jobsite Scissors
amzn.to/32fxC6I
Milwaukee 4932459097 Billet Torpedo Level
amzn.to/30Dh6Nw
Milwaukee Wide Blade Magnetic Tape Measure 16 FT
amzn.to/3yEN7kL
Milwaukee Fine Pt. Markers Black
amzn.to/3e4fH5W
Streamlight 66604 MicroStream USB 250-Lumen Rechargable Pocket Flashlight
amzn.to/320XiEF
Klein Tools 11-in-1 Screwdriver / Nut Driver
amzn.to/3s3o8ql
Klein Tools 32561 Multi-Bit Screwdriver / Nut Driver 6-in-1
amzn.to/3e4ur4x
Klein Tools 32807MAG 7-in-1 Nut Driver, Magnetic Driver
amzn.to/321n4bW
Klein Tools 600-4 1/4-Inch Keystone Cushion-Grip Screwdriver
amzn.to/3J11hS1
Klein Tools 32581 4-in-1 Electronics Screwdriver Set
amzn.to/3yEj3WC
Klein Tools LLK12 L-Style Hex Key Caddy Set 12-Piece (Metric/Sae)
amzn.to/3yRUiGJ
Yellow Jacket 18975 Charge Tool
amzn.to/3J4pfvJ
Yellow Jacket 60613 Service ratchet Wrench
amzn.to/3E8iYeZ
Yellow Jacket 19173 5/16" Female Quick Couplers x 1/4" Male Flare
amzn.to/3q0TQ4M
Cooper Bussmann BP-FP-2 Cartridge Carded Fuse Puller
amzn.to/3e0USrY
Crescent 2 Pc. X6 4-in-1 Black Oxide Spline Ratcheting SAE Wrench Set
amzn.to/3qqKlw7
Crescent 4" Adjustable Cushion Grip Wrench
amzn.to/3J4qsmL
Knipex 09 08 240 SBA 9.5-Inch Insulated Ultra-High Leverage Lineman's Pliers (1000v)
amzn.to/30EQmw5
Knipex 09 11 240 9.5-Inch Ultra-High Leverage Lineman's Pliers with Fish Tape Puller and Crimper
amzn.to/3H9iYAu
KNIPEX Tools - Long Nose Pliers With Cutter, 1000V Insulated
amzn.to/3e3IEi7
KNIPEX Tools - Long Nose Pliers With Cutter
amzn.to/3gUSE2i
KNIPEX Tools 98 62 02, Flat Nose Plastic Pliers 1000V Insulated
amzn.to/3p6lFsZ
KNIPEX - 74 08 200 - High Leverage Diagonal Cutters, 1000V Insulated
amzn.to/3mh8K5U
KNIPEX - 74 01 200 Tools - High Leverage Diagonal Cutters
amzn.to/3F1VScb
KNIPEX Tools - Cobra QuickSet Pump Pliers, 1000V Insulated
amzn.to/3sftr5Q
KNIPEX Tools 3 Piece Cobra Pliers Set
amzn.to/3FbRwy7
KNIPEX Tools Pliers Wrench 3-Piece Set
amzn.to/3nnRLfW 
Наука
Reason why 120 to ground was showing on both sides of the contactor is because you have a closed circuit through the contactor coil...once you pulled the terminals off you interrupted the flow across the coil. Hope this helps and keep up the great content.
I always appreciate your videos! You made this one a little more complicated then it needed to be. Me personally I always do all my interior box checks before heading to the roof. That includes taking the cover off the thermo which would have led you to the issue right away and this job would have been done very quickly. I’ve found it very important to approach walk in calls the same way every time and have a procedural way of doing it so I don’t miss easy things like this. Also I would never say a load is working/not working by testing pins to ground, 120v on both sides to ground is not the same as 208v across the coil. There are several reasons to why you would have those voltages but testing across for 208v is truly the only way of know if it should be energized or not. I think you’d benefit by approaching these calls the same way every time rather then changing how you do things based on the condition! Do it in a procedural way for a year and you will not get stumped on calls like this and you will have a vastly better understanding! I’ve been training a few techs lately and I’m really just trying to help! Keep up the good work JMT!
This comment helps me.. im a rookie tech, thank you!!
That certainly makes sense.
Checking voltages to ground when troubleshooting can often get you confused. Great video.
As my journeyman always told me the meter will always tell you the path! My Multi Meter is my best friend, no matter who tells you what’s not working or disconnected ( upside down switch?) I always meter every thing myself before I start. P.S the meter can save your life!
Great find, I’m not real crazy about them using t-stat wire for line voltage. Always great job thanks
Thank you! That t stat wire should definitely be replaced. Appreciate you watching & commenting 🔧⚡️
Dude don’t ever check voltage to ground as a diagnostic test. It’ll mess you up every time. Always reference the other leg of power.
Your electrical troubleshooting skills were fun to see. This is journeyman level electrical control systems troubleshooting at its best
Aw man! They used thermostat wire for line voltage!! 😮
Your doing a great job by the way! Great video!
Wiring is probably burnt from higher amp draw. 18 gauge wire not to be used for line voltage
Definitely should not be used for line voltage. That should be replaced 💯
Jumper man keep on jumping ! Don't feel bad electrical troubleshooting has humbled us all at some point lol. These types of struggles are the types that will elevate you to electrical master in no time. Bottom line if a component is tagged for 208,120,24 etc and you don't get it from post to post then the component is not bad and you should keep on working backwards from there.
Think of the coil as just a length of wire (which it is). When only one side is connected to AC, then it will act as a wire, so you will always see a similar voltage at both ends of the coil with reference to ground, but no voltage across it because no current is flowing.
When there is power applied across both terminals, the coil is energised, current will flow and it will drop voltage across it, so you will see a voltage between the terminals.
I thought it was a bad contactor too, what a strange call man. Glad you figured it out!
Great video. You were a little confused with 120v to ground on each side of the contactor coil but nothing across. That's typical 208v control meaning you lost a leg of 208 which you found at the burned up wire at the tstat. Still wonder why you didn't check 208v at the time clock to power it up when your green light was out? Hopefully your next call there isn't an iced up coil due to time clock motor not powered up. lol. Love the liquor check at the end!!
Great video. I noticed their was no green light on the clock tho. Should have checked 1 to N and 4 to N. Then put in defrost to make sure it cuts off the tstat. Then check 3 to N. Always check wires when no romex is used. The definitely rub out.
WE LOVE YOU GUY, YOU ARE NUMBER ONE....
Great digging.
Interesting video! Thanks for posting. That 'isolator' switch may be upside down for the US, but here in United Kingdom, Europe, (I'm British by the way) that's the normal way for switches.
Thank you! That's interesting how it's the opposite where you live. Thanks for watching & stay tuned for new videos every week🔧⚡️
Hello, great educational videos. I would like to ask if you could make a video about your parts, what parts you constantly carry in your truck, universal or commonly encountered ones. For refrigeration equipment. I do residential HVAC and am also adding refrigerators to expand my business.
Good job Jumper.
Thank you John!! 🔧⚡️
Holly shit. There using low voltage thermostat wires for line voltage.
That was definitely an interesting find 😂
N to 1 is the line voltage that powers your defrost clock always start there when no lights are ON at the clock.
Now you did a good job troubleshooting. I was thinking coil too , But when you pull that wire off the coil and all of a sudden, you had twenty eight Volts I thought the same thing you did , huh? Lol!
👍💪🇺🇸❄️ nice vid. Any thoughts about why clock wasn’t lit up ?
Good job man. A little bit of a confusing call. But you got it right. Its crazy how different HVAC is in NY due to limited space. I'm in Wyoming and almost never see water cooled condensor on anything most chillers are air cooled. Actually a decent amount of vrf stuff out here it's getting out into old commercial buildings because install is less invasive. Thanks a bunch for taking the time to make these service call vlogs.
this isn't HVAC, it's refrigeration
Wow , that was great, you caught it , I thought something is about to blow up 😂
Thank you! Haha thankfully nothing blew up & that wire didn't shock me while I took off the cover. Thanks for watching!
@@JumpermanTech ya good eyes.
I enjoyed the video.
Take care
@@mansourramzey7711 Thank you! You also take care and enjoy your weekend ⚡️
Most excellent 👍👍👍💯
Thank you very much!! Stay tuned for new videos every week🔧⚡️
Good job sir
Very good
Nice find! Was sitting here saying it's the contactor. Lol appreciate your videos. New to the trade. Normally work on the hot side. Follow up on the indicator light on the defrost timer? I thought walk ins don't do defrost. Help
I had a similar situation to this a while ago, it was for a crematorium, the bodies were beginning to get warm!!!
Great troubleshooting my man! How long doest it take for termostat to reach 35 !?
Thank you!! It was quick to come down to about 45 but from there it took a while to reach about 38 degrees. I'd say about 1 hour. Thanks for watching 🔧⚡️
As mentioned.... when troubleshooting 208v controls circuits.... you can't measure to ground, You must assign an L1 and L2. L2 is the "neutral" of the circuit.
Nice find with that broken wire.
That paragon clock did you dirty
Your AC voltmeter measures voltage drop, it measures 208v across an energized coil because there is a 208v drop across the load. 120v on one side of a 208v coil will still conduct across the coil but will show 0v drop across the coil because there is no load.
the 28 volts was coming through the coil from the live side of the contactor and then dropping to ground as the difference between the phase and earth (ground in the US). If you think the contactor control coil has failed (Which does happen with coils energized for hours on end), disconnect the coil and do a resistance test across the coil. These pesky faults can have you chasing your tail for ages if you are focused on whats wrong an see something weird... I always do the supply test first, then the contactor tests after checking the fuses are good and then the switches and the starting caps.... if they all look good, then look at things like compressor winding resistances.... Some of these systems start out well designed, but the differing skilled contractors on a quick turn around can turn the unit into a heath robinson setup so quickly... Kudo's for staying focused on getting the control circuit ironed out dude....bravo
Word of advise. Do it the european way, single phase or triple phase. Not those 208 thing.
Coils using LNE (230V), motors using either 230V LNE or 400V 3 phase (usually without N). Electricity in Europe (DK), is much easier.
Like I said. The low voltage wire can not handle the amperage from the line voltage running then it. The wire is only good for low voltages
Facts. It should definitely be replaced. So many shortcuts have been taken in this location
@@JumpermanTechdefinitely dangerous to have high voltage on stat wire. Easy fix is to install a transformer and 24v contactor to power the control circuit.
Btw the small metal switch is a pump down switch.
Why would you read 0 volts on the thermostat if both wires get 120
Check defrost timer for power if there is power present clock bad that’s why u had no green light or red when u turn the clock. if u follow the red wire coming from defrost clock its ur other half line for contactor. U just bypass the defrost clock and called it a day
Missing a leg from the defrost clock buddy
Seems your other leg of the coil is the #4 from the clock, if the clock is bad or has bad contacts which your clock has no lights you’ll never have your other leg to the coil to contactor unless stuck closed which in this case it might be it, hope it helps
You check to ground to verify but not to diagnose as it’ll always throw you off
@@jruizsr yes sir
Have made a wiring diagram board to train my brother that just joined the trade not too long ago
I was screaming by minute 5 to check power at the clock. I thought he was trolling by ignoring the clock.
@@skanteroar 😂 it’s cool man we don’t all know it to be the main power source of operation on a unit but then again we all get tunnel vision sometimes and that could mess with us hard, just glad he found the short in the wire but that clock not lighting up indeed shows to be bad
Measure neutral to ground then live 1 and live 2 to ground. Using 24V thermostat wire for a 208v control was plain dangerous 😳. Thermostat wire insulation is only good up to 120v max before it fails, and only legally meant for low voltage service. A shorted solenoid coil could have easily started a fire because the wire would have burned up before a fuse would have blown. Scary 💩
This thing on it is like this counter low pressure cut out
yo measured 0 Volts across the contactor. That means there is no current getting to the contactor.
You should not even be repairing this for liability
I hear that!! Definitely some shady work has been done here 👀
At least it wasn't full of rotting food they were still serving to customers.... been there. Installers put stuff in like it will never have to be serviced. Been there too.
No grommets on anything! Gentlemen, when you’re running wires through anything!,, put grommets on every entrance any junction box or any thermostat.. installation failure!
THERMISTAT WIRE FOR LINE VOLTAGE?!!!! Yikes, THAT INSULATION ISNT MEANT FOR THAT VOLTAGE.
😻💚💜💚
💜🔧⚡️
Get rid of that Grassland defrost clock
Start at the defrost clock. Typical issue
That defrost clock not having any sort of light is der strange. Led's burnt out it seems. Probably a good idea to get rid of that thing as well. Thanks for watching & commenting 🔧⚡️
I suggest you go back to basics as your electrical fault finding is haphazard and poor. You need to learn to test correctly follow the circuit step by step and by process, just grabbing wires and testing to earth does little or no good unless you charge by the hour...
Test across the terminals not to earth as power was going through the contactor coil to the other side but coming to the other side. This was very obvious early on. if you went across the coil you'd see immediately one leg was missing. Blaming the contactor early on was another obvious "fault finding by assumption rather than by diagnosis"
Sure you got there but you went round in circles and got lucky.
Thanks for sharing, and good luck going forward
That is what separates the professional from the amateur
Yes sir! Thank you! Glad this one was repaired. It was a tricky one. Stay tuned for new videos every week🔧⚡️
even a blind squirrel finds an acorn once in awhile
Please do not check 208 to ground. You will not be able to troubleshoot that way. Honestly should not ever troubleshoot to ground with any voltage.
Brain twister 😂
It seriously was! Had me stumped for a bit but I figured it out in the end😂 Thanks for watching! 🔧⚡️
Your videos are awesome keep them coming. 👏
👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍
great walkthrough of the walk in ⭐️❄️🧊🥶
Haha thank you! Stay tuned for new videos every week🔧⚡️
That’s truly amazing trouble shooting 🫡