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Johnson Controls York YCSE 040 - User Manual

Johnson Controls York YCSE 040
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YCSE040-YCSE100 & YCRE040-YCRE100
INSTALLATION, COMMISSIONING,
OPERATION & MAINTENANCE
Form 035-21786-100 (0909)
Revision 1
R407C
Aspak
WATER AND REMOTE AIR
COOLED LIQUID CHILLERS
WITH SCREW COMPRESSORS
STYLE B
(YCSE 134-320KW)
(YCRE 127-307KW)
Библиотека СОК

Table of Contents

Questions and Answers

  • V
    valdezelizabethAug 17, 2025
    How to troubleshoot a Johnson Controls York YCSE 040 compressor that does not operate?
    • J
      Joshua KelleyAug 17, 2025
      If the Johnson Controls Chiller compressor isn't operating, first check the chilled water pump's interlock circuit to see if it's open. Inspect the pump contactor and repair or replace it if needed. Also, examine the electrical protective devices for any trips and rectify any faults. Finally, verify the wiring connections for the compressor power source and interchange two of the three terminals (R, S, and T) at the main power source terminals if the wiring is incorrect; then reset the "ON" switch.
  • J
    Jacob DunnAug 20, 2025
    How to fix high discharge pressure in Johnson Controls York YCSE 040 Chiller?
    • A
      Alexander LopezAug 20, 2025
      To address high discharge pressure in your Johnson Controls Chiller, start by opening the valve to ensure sufficient water flow through the condenser and that the inlet water isn't too warm. Next, check that the gas outlet valve on the condenser is fully open and inspect valves, capillary tubes, and the strainer, replacing components if necessary. If the system is overcharged with refrigerant, purge some of it. Additionally, clean the condenser water plates with a chemical cleaner to remove scale, slime, or corrosion. Finally, consider if high suction pressure is the cause.
  • C
    Christina RossAug 22, 2025
    What to do if Johnson Controls Chiller has insufficient cooling?
    • A
      April MiddletonAug 23, 2025
      If your Johnson Controls Chiller isn't providing sufficient cooling, start by checking for high discharge pressure or low suction pressure. Also, ensure that the thermostat is properly set. If these aren't the issue, inspect the unload mechanism, adjusting it as necessary and repairing or replacing any defective components.
  • J
    James SantiagoAug 25, 2025
    Why Johnson Controls York YCSE 040 compressor stopped by overcurrent relay?
    • T
      tylerbellAug 26, 2025
      If the Johnson Controls Chiller compressor is stopped by the overcurrent relay, it could be due to several reasons. First, high discharge and suction pressures can cause this issue. Also, check for high or low voltage, single-phase conditions, or phase imbalance in the power supply line and contactors, repairing if necessary. Loose electrical connections can also trigger this, so tighten any that are found. Finally, the overcurrent relay itself might be faulty and need replacement.
  • P
    Paul AveryAug 27, 2025
    What causes high suction pressure in Johnson Controls York YCSE 040?
    • T
      Tara KellerAug 28, 2025
      High suction pressure in a Johnson Controls Chiller can stem from several causes. Check for high discharge pressure. If the system is overcharged with refrigerant, purge some of it. Liquid refrigerant flooding back from the water cooler might also be the culprit, so inspect the expansion valve's operation and adjustment. Additionally, look for leakage from the condenser gas outlet valve. Finally, ensure that the chilled water piping is properly insulated.
  • K
    Keith CooperAug 30, 2025
    Why Johnson Controls York YCSE 040 compressor stopped by internal thermostat?
    • L
      Luis BeckAug 30, 2025
      If the Johnson Controls Chiller compressor is stopped by the internal thermostat or discharge gas thermostat, check the power supply line and contactors for high or low voltage, single-phase conditions, or phase imbalance, and repair if necessary. Check for refrigerant leakage. Also, check the internal thermostat for correct operation. Finally, high discharge pressure and low suction pressure can also trigger this issue.
  • K
    Kathy JonesSep 2, 2025
    What to do if Johnson Controls York YCSE 040 compressor stopped by freeze protection thermistor?
    • R
      Rebecca RobertsonSep 2, 2025
      If the Johnson Controls Chiller compressor is stopped by the freeze protection thermistor, check for an excessively low setting of the chilled water temperature switch. Inspect the thermistor for malfunction and replace if necessary. Also, check the chilled water pump for a shortage of chilled water flow. Finally, purge any air in the water circuit.
  • D
    David WhiteSep 5, 2025
    How to troubleshoot low suction pressure in Johnson Controls Chiller?
    • V
      Victoria LopezSep 5, 2025
      Low suction pressure in a Johnson Controls Chiller can arise from several issues. Ensure the condenser liquid outlet valve is fully open. Adjust the expansion valve for correct superheat, or replace if faulty. Check for refrigerant loss in the feeler bulb if the inlet chilled water temperature is considerably lower than standard. Add refrigerant if the charge is insufficient. Also, check the oil charge if there's excessive oil circulating in the system. Inspect chilled water piping lines for pressure loss due to insufficient chilled water flow through the water cooler. Adjust the water shutoff valve if there's low discharge pressure. Finally, clean the plates if there are scales on the water cooler plates.
  • V
    Vanessa OsbornSep 8, 2025
    What causes low discharge pressure in Johnson Controls York YCSE 040 Chiller?
    • M
      Megan WrightSep 8, 2025
      Low discharge pressure in your Johnson Controls Chiller can be caused by too much or too cold water flowing through the condenser; adjust the water cock or regulating valve. If there is insufficient refrigerant charge, add more. Check for leakage from the condenser gas outlet valve. Also, liquid refrigerant flooding back from the water cooler can cause oil to foam, so inspect the expansion valve's operation and adjustment. Finally, ensure the feeler bulb is securely connected to the suction pipe and completely insulated if the suction pressure is lower than standard.
  • E
    ewrightSep 12, 2025
    Why is Johnson Controls York YCSE 040 Chiller compressor so noisy?
    • C
      Christina WilliamsSep 12, 2025
      A noisy compressor in your Johnson Controls Chiller may be due to liquid flooding back to the compressor. Check the superheat of suction gas to ensure it's within range. Alternatively, worn internal components may be the cause, requiring compressor replacement.

Johnson Controls York YCSE 040 Specifications

General IconGeneral
BrandJohnson Controls
ModelYork YCSE 040
CategoryChiller
LanguageEnglish

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