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Low discharge super heat yciv177

Discussion in 'Commercial' started by cookr68, May 15, 2017.

  1. cookr68

    cookr68 New Member

    Messages:
    15
    Can anyone tell me the cause of low doscharge superheay on yciv 177

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  2. heavyevans

    heavyevans FNG

    Messages:
    1,200
    Location:
    Indy
    Typically low suction superheat lowers discharge superheat. Check evaporator approach and verify all temperature sensors are reading correctly. On the one I remember, It was the suction line sensor reading about 20° too high. York makes some pretty chitty sensors.
     
    cookr68, jamesyarbrough and Zman like this.
  3. 22blood

    22blood red wire nuts only

    Messages:
    1,699
    Look at the evap coil before pressures

    If high suction low head pressure its your compressor
     
    cookr68 likes this.
  4. Tap

    Tap i hate it when a velociraptor throws poop at me

    Messages:
    10,225
    Location:
    Lost
    Verify sensors as heavyevans said, definitely check evap approach/ water flow, discharge sh oil temp etc log the entire chiller, it may have a stuck open txv, starting flooded, slide valve could be getting stuck and not unloading. Read the IOM spend some time with her youll figure it out.
     
    somedude likes this.
  5. Zman

    Zman Hanging by a Thread

    Messages:
    524
    Location:
    The "I know a Guy" State
    The Problem is that model is made only for the Dominican Republic Region and some South American Countries.This is why Doscharge and Superheay do not compute on your Standard OssWipe Mannyfold Gaugis!
     
    somedude likes this.
  6. 22blood

    22blood red wire nuts only

    Messages:
    1,699
    Say that again pardner
     
  7. cookr68

    cookr68 New Member

    Messages:
    15
    Zman actually took the time to type that lol, sorry i was driving when i typed that. I am actually from houston i normally say thats "brt" (beeg round thang) aint workin.

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  8. Zman

    Zman Hanging by a Thread

    Messages:
    524
    Location:
    The "I know a Guy" State
    I was just messing around at the end of long day.Didnt think your Post was serious with that spelling.Hope you get it figured out...oh,and Don't text and Drive,thats How Bad Text Happen!:D
     
    somedude likes this.
  9. cookr68

    cookr68 New Member

    Messages:
    15
    Thanks zman great advice !

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  10. 22blood

    22blood red wire nuts only

    Messages:
    1,699
    Bant camp
     
  11. cookr68

    cookr68 New Member

    Messages:
    15
    Heavyevans , thank you very much, i will check it out.

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  12. pintofstout

    pintofstout New Member

    Messages:
    1,475
    Location:
    Olean, NY
    Either low suction superheat or low overall compression will cause that, as well as head pressure or discharge temperature sensor calibrations..... But i think an underperforming compressor will also generate something similar to a low lift alarm.


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    cookr68 likes this.
  13. cookr68

    cookr68 New Member

    Messages:
    15
    Hey all, we found a bad suction line temp sensor.

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    knave and somedude like this.
  14. somedude

    somedude Senior Stalker & PITA, aka zachhvac

    Messages:
    3,349
    Location:
    Los Alamos California
    Problem is its a york
     
  15. freeworld

    freeworld Freon Jockey

    Messages:
    56
    Location:
    Idaho
    Did the suction line sensor clear this up? Has it reoccurred?