Welcome to another HVACR training video where I will be troubleshooting a Walk in cooler that is warm using refrigeration pressures, refrigeration cycle and examining how a water cooled condensor works.

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15 thoughts on “Walk In Cooler Is NOT Cooling

  1. Everything HVACR says:

    Interesting, unless restricted badly and overcharged, I can't think of a reason your pressures would do that with compressor off. Great video, if you get an answer I would love to know what it is. 2 Evap and 2 TXVs can cause issues even with both running if SH or valves aren't set right I've seen this with one valve failing causing 2nd evap to freeze. I could see the comm problem causing issues and 201 volts as well electronics don't like low voltage

  2. Leon Yu says:

    On a semi hermatic k body type compressor the valves might of been stuck closed maybe? in the compressor ? did you tried taking apart the compressor top to see the piston rods ? shaft might of broken off and caused such high amp draws… couldn't pump.. ? when you turned it on to take amp draw did it make a cling clanking sound in the compressor or was trying to start?

  3. King Katiin says:

    Oh shit youโ€™re Canadian. I didnโ€™t realize. I might come to Toronto and work for you one day. Iโ€™m currently a first year doing service and maintenance on HVAC and Refrigeration in Victoria BC
    Lived in TO for 9 years. And considering moving back

  4. Ken FES says:

    When the breaker tripped the solenoid closed and the compressor never pumped it down… Depending on the type of the compressor it could have different pressures on both sides if the discharge part of the compressor acts as a shut-off and the solenoid acts as a shut off whatever that pressure was at the time and vice versa on the suction when the breaker tripped… Right? And if the TXV did not have an external equalizer… Definitely sounds like you were overcharged or clogged up water coil on condenser or their chiller wasn't bringing enough cold water… Unless it was tap water and no chiller… So would you say your compressor was locked rotor did you try changing start components or was it 3 phase?

  5. W D says:

    1. I don't think it had a bad valve plate (usually) their is a hair line crack in the plate, which will allow refrigerant pass it will do some half ass cooling a quick pump down would have confirmed that. I would have liked to seen your gauges on that compressor running before it tripped the breaker to see what the pressures where. Also you should have megged out the compressor. In the name of YouTube go get that bad compressor back reinstall it , and let's start from the beginning. LMAOOOOOO

  6. seng le says:

    Amazing video! Thank for spen time to recoded video, edited, and explained step by step for us to understand. I never work on water cooler refrigerator before but good to learn how system work. Thank again.

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