62-NM3 Optional Discharge Pressure Trans-ducers must be installed on the chiller for this function. High oil temperature due to system fault. AIR-COOLED SCROLL CHILLERS WITH BRAZED AIR-COOLED SCROLL CHILLERS WITH BRAZED PLATE HEAT EXCHANGER STYLE B (60 HZ) 4-10 FAN 55 - 175 TON 195-615 KW R-410A Issue Date: June 30, 2015 AIR-COOLED SCROLL CHILLER INSTALLATION, OPERATION, MAINTENANCE Supersedes: 150. 1 SECTION 7 - OPERATION Issue date: 08/06/2021 The HPCO is wired in series with the VSD Run This safety fault is released when the Suction Pressure Signal and will only be checked by the Chiller >= Suction Pressure Override Threshold. When hose is vented of air, close more suction valve to lower pressure below 0 bar and Title. 48-EG1) Keywords. Shield parameter or short circuit the pressure switch signal line, then turn on the chiller to check whether the • suction pressure cutout setting • Each system suction pressure • Discharge pressure (optional) • liquid temperature Reset via a YORK Isn DDc or Building Automation system (by others) via: - a pulse width modulated (PWM) input as standard - a 4-20 milliamp or 0 -10 VDc input, or contact closure with the optional B. Jul 5, 2023 · The flow rate of the water pump is small and does not match the system. Relay failure, Electrical System False Alarm. This site has about 3 of these same York chillers. Low water flow, low on charge, sensor not reading properly, condenser fan problems, etc. I tried looking for the filter but was unable to locate it. s. 2 Temp = 131. The issue is as the compressor ramps up my discharge pressure goes real high 315 psig. 6. The low-pressure failure of the flow chiller should be selected because the suction pressure of the compressor is too low. GIVEN: Provide a capacity of 80 tons cooling 0% by weight Ethylene Glycol from 50°F to 40°F, 0. 250-3,000 TR (880-10,550 kW) From schools to data centers, this water-cooled, centrifugal chiller delivers flexibility, performance and efficiency to any facility. Page 1 Model YK (Style H), R-134a and R-513A With OptiView Control Center for Electromechanical Starter, Solid-State Starter, and Variable Speed Drive 035-27332-100 Operations and Maintenance Form Number: 160. If the chiller suction pressure is low and the return air volume is reduced, the cooling capacity will not reach the target. At first glance it look like a nuisance trip but looki Apr 1, 2020 · Suddenly, i got this fault on YMC2 chiller: "evaporator - low pressure" and system doesn't run anymore. There are five actuators with specific torque values; 200 in. Rapid Flash. While circuit 2 has 8 condenser fan motors. Back to Top. I have York YAES0465 screw chiller running with Suction limiting message. Verify superheat setting of ° 10 - 15 ° F (5. A mind is like a parachute. YCAS Series chiller pdf manual download. : 6U5M-A11M-NB-EN Installation , Operation & Maintenance Manual YVAG012~040RSE Cooke Industries - Phone: +64 9 579 2185 Email: sales@cookeindustries. Because the suction pressure of the chiller becomes low, but the return air volume is Summary of Contents for York YVAA. The cooling capacity becomes smaller. With a patented, liquid-cooled, variable-speed drive that produces 15-25% annual energy savings, IPLV as high as 21. 73-NM1 (918) Form 150. 2MPa, it triggers the low-pressure protection relay, causing the chiller to stop running. 25 kW/TR reduction in energy use when replacing existing chillers, YORK® has the experience to tailor and tune the YVAA specifically for you. 72-EG6 (516) Equipment Overview The 55 - 175 Ton (195 - 615 kW) YLAA models are shipped complete from the factory ready for installa tion and use. 4~0. All units are produced at an ISO 9001 registered facility. Page 1 AIR-COOLED SCREW LIQUID CHILLERS Supersedes: 201. Inlet chilled water and condensing water temperature are Jan 7, 2015 · YCAV0177 Air Cooled York Low Suction Presure fault. 26-EG1 (116) Selection Data (Cont'd) Or combine the two formulas: Condenser Tons x 30 Cond. 4. Circuit 1 has 12 condenser fan motors. Am at a call out for the above chiller which has gone into fault on circuit 1, current/MP/HPX and C2 has gone out on low suction. Post Likes. sensor return water temp Page 127 Form 201. Air-to-liquid, free-cooling coils. The YCWL compressors incorporate a compli- I have a York Chiller model YCAJ160-46PA Serial 676AHL6A with two recip compressors . Smaller cooling capacity. 23-NM1, 201. lb. I have good subcooling and full sight glass. 66-NM3 (110) Form 150. Here's some data Ac2 Oil 121psi Suction 74psi Dp 203psi Suc SH 19 Dis SH 44 Any help would be great thanks. All 8 fans were running except 1 fan motor. Example: (45. YORK® variable-speed drive. 9˚F. Also for: Ylaa0065, Ylaa0080, Ylaa0070, Ylaa0089, Sep 7, 2021 · What is a chiller low-pressure alarm fault? A low-pressure fault in a chiller plant means that the inlet pressure of the compressor is too low, causing the low-pressure protection relay to act. Variable-speed drive. LP setpoint is 1. 23-NM2 Equipment YCAV & YCIV Chillers Affected: GENERAL This instruction is intended as an aid for diagnosing the many causes of low suction pressure and high flash tank faults on YCAV and YCIV chillers. Generally a small square or rectangle box with 2 wires connected to it. I verified oil pressure with my gauges and matched to to microprocessor control. The second, only applies to YCAL units, is when the Pilot Solenoid is closed 10 times in 2 minutes due to low superheat. Worn compressor piston rings. 2 Sat temp=99. pressure switch (HPS) System No. Therefore, operators must actively consider these factors to mitigate potential threats to the cooling equipment. The unit is running on a low load, and the Difference between the Entering and Leaving is 5 Degrees C (Setpoint/Leaving: 7 Degrees, Entering: 12 Degrees). 23-NM2 (610) Form 201. Verify correct com-pressor rotation. Off. causing a low pressure trip. YCAV1039 chiller pdf manual download. 21-NM1 (616) 035-20552-000 YCAV STYLE A MODELS YCAV0157-0267, 60 HZ (150-260 TONS) E/V HIGH EFFICIENCY AND S/P STANDARD EFFICIENCY LD10477 R134a Issue Date: June 30, 2016 The low side relief valve is located on the suction line. Mar 23, 2008 · It means the evap temp sensor has sensed a temperature, lower than the programmed setpoint for X amount of time. 3)The ambient temperature is too high. 1 (118) INSTALLATION, OPERATION, MAINTENANCE 035-23219-100 MODEL YVAA STYLE A AIR-COOLED SCREW LIQUID CHILLERS WITH VARIABLE SPEED DRIVE FRAME SIZES 015 - 052 150 - 500 TONS 525 - 1750 KW 2 COMPRESSOR Nov 22, 2022 · 3 Common Causes of Chiller Problems. 6 bar) and a capacity of 28. 3. 66-NM3 (920) INSTALLATION, OPERATION, MAINTENANCE 035-20895-001 YCAL0041EC–YCAL0071EC AIR-COOLED SCROLL CHILLERS STYLE D WITH IPU II and I/O BOARDS (50 Hz) 29 TON TO 65 TON R-410A Issue Date: September 25, 2020 Apr 28, 2021 · By contacting an HVAC technician, you can get your AC system’s suction pressure back to normal levels. Suction was 54 LOW SUCTION PRESSURE AND HIGH FLASH TANK FAULT TROUBLESHOOTING File In/With: 201. Found circuit 2 down on high head pressure cut out fault. High discharge pressure - System fault. DETERMINE: Unit Size kW Input Ethylene Glycol GPM Cooler Pressure Drop . FORM 150. The alarm history shows roughly 85 PSI differential when runtime is 135 seconds roughly. AIR-COOLED SCREW LIQUID CHILLERS 50 HZ STYLE A 960-1815KW E/V HIGH EFFICIENCY AND S/P STANDARD EFFICIENCY AIR-COOLED SCREW LIQUID CHILLERS R-134a. Refrigeration. External overload tripped. Causing a fault, could be due to a number of things. York YLAA0058 Pdf User Manuals. See Dec 20, 2016 · I have a York YVAA Chiller operating at my plant. Low Motor Current Cutout Fault. Can someone help us with a problem on a York YCAV0247PA46VABB air cooled chiller. Chiller fault - High ambient temperature. 2 Actuation of low pressure switch (LPS) System No. The condenser meanwhile had a delta T of 4˚F. SEMI-HERMETIC YORK SCREW COMPRESSORS • Continuous function, microprocessor controlled, 3- way proportional Capacity Control Valve provides regulated output pressure independent of valve input pressure for a stable, smooth, and precise match of compressor Mar 13, 2014 · Thread Tools. Variable-speed drive centrifugal compressor. 1 Malfunction of fan inter lock System No. Trips on high motor temp. be/hCbo8gbPYGU#York chiller suction lim Jul 2, 2019 · The chiller controls should prevent the machine from running in such case. Oct 29, 2022 · This chiller is normally working not stopping but showing suction limiting. 0º F for 3 seconds. Feb 10, 2022 · skm chiller unsafe suction me Jata hai to kya kare#unsefe suction me Jane ka kya kya Reagan ho sakte hai#unsafe suction in chiller . Safety Code for Mechanical Refrigeration. Below are the reading on the display before it goes to HPCO fault. View online or download York YLAA0058 Manual Suction Pressure Limit Controls. All YCWL chill-ers are rated in accordance with ARI Standard 550/590 at ARI conditions. In addition, we should pay attention to the length of the suction pipe of the refrigeration compressor and the performance of the wrapped insulation material, which will have a certain influence on the super heat. 6. 2 Malfunction of fan inter lock System No. When the suction pressure is lower than 0. make sure your CHW flow switch works. Suction: Superheat = 15. Document Number Screw Air Cooled. water sensor rt9 entering chilled water sensor rt1 leaving chilled water sensor 28699a View and Download York YCAS Series installation operation & maintenance online. 0°F range x 0. suction line discharge line fig. 5. 122. “MP / HPCO” FAULT. (York uses the 30 number for the condenser due to the heat of compression in the Page 20 FORM 150. be observed. Line fuse blows. Maybe I am missing something. Jan 7, 2021 · The relay serves as an indirect protective device. Fol-lowing are the safety fault messages for all sys-tems: SENSOR FAILURE CUTOUT SAFETY 150-500 TR (525-1,750 kW) The YORK® YVFA is a free-cooling screw chiller that minimizes operating cost by combining superior engineering and technology with a packaged design that's simple to own and operate. This circuit #1. 45 Mpa and the protection value is set at 0. The unit is pressure-tested, evacuated, and fully charged with a zero Ozone Depletion Potential Refrigerant R-410A and includes an initial oil charge. It doesn't work if it is not open. Improper Operation The YORK® YVAA Air-cooled Chiller has been proven globally in some of the world's most challenging conditions. 176. Centrifugal water chiller generally uses full-liquid evaporator. Diagnose cause of failure and replace. Our chillers are specially engineered with components designed for mission critical cooling applications and 24/7/365 service duty. Summary of Contents for York YCAL Series. York Chiller Troubleshooting Guide. . False alarm/abnormal parameter. 0 Discharge=130. 0001 evaporator fouling factor with 85ºF to 95ºF condensing water available. Have checked fridge pressures and all seem ok, overload led on opto board is illuminated, starting current of comp is 141amps, according to the system display oil pressure is ok too. 6MPa. Discharge Pressure Load Limiting/Unloading. Show all. 6 °C range. 7 Sat Temp = 66. (4 x 2100)/30 = 280 T. 9 x 1400)/24 = 694 T. The first piece of the pump to examine if the motor does not run is the pressure switch. Lower installation, operating and maintenance costs. Example: 10. Sometimes, moisture or circuit malfunctions can cause the low-pressure relay to work incorrectly. not low. Compressor failure 4. We got a call that the chiller down. You may need a specialist to come in and check it. From the past few weeks, the unit trips randomly on fault of "LOW SUCTION PRESSURE". Aug 14, 2021 · 1) The fan motor or blades are defective or too small. This is located on the front of the pump head. We are experiences a low discharge superheat alarm. This stage runs mostly at 29psi, except when the other stage turns off then. Hybrid falling-film evaporator. Message appeares when evaporating temperature is about 0C (LWT is about 9C) ***** R407C. protector (MP) open. Liquid line was cool about 84 degrees. power faults can cause the motor protector module in the compressor peckerhead cover to go into a hard reset. In the external code display, the first indicator displays the module number, and the second indicator displays the fault number: (0-9), A (10), b York Manuals; Chiller; Low Suction Pressure Cutout (Software) Fault. interface option Dec 30, 2010 · Re: Adding oil to a york chiller compressor. This all-in-one package is a true plug and play system that provides superb efficiency and performance. 6 °-8. Water GPM = Condenser Water Range (ºF) SAMPLE SELECTION Water Cooled Chiller (YCWL) GIVEN – Chill 200 GPM of water from 56ºF to 44ºF and 0. 8 york international 2 or 3 compressors per system oil equalizing line air cooled condensers dx cooler leaving chilled water entering chilled water service valve optional discharge pressure transducer high pressure cutout switch service valve low pressure switch or suction pressure transducer leaving chilled water temp. YCAV Variable Speed Drive Screw Jun 7, 2021 · Found circuit 1 running normal. 9. LACK OF COOLING EFFECT 1. Discharge: Superheat= 32. When these fail, the chiller can not control the EEV's any longer and shutdown. Verify refrigerant charge is. nz Jul 30, 2022 · Industrial Chiller Low Suction pressure trip - issue troubleshooting video, In this video, we take a look at Industrial Chiller's Low Suction pressure trip f 4 YORK INTERNATIONAL These YORK air-cooled chillers are shipped as a com-plete factory package. To convert degrees Fahrenheit (°F) to degrees Celsius (°C), subtract 32° and multiply by 5/9 or 0. This fault Control Board when the system is running. water sensor rt5 entering cond. Page 12 See Figure 5 and unit wiring diagram. 1a Œ model yb gas engine drive chiller york power panel york micro panel engine jacket water location when installed caterpillar control panel 1t 3kva transformer battery charger rt4 leaving cond. 28-NM1. is accurate. How to check chiller reading https://youtu. Aug 13, 2014 · In the York world tonnage in the evaporator is calculated by multiplying the GPM by the delta T all divided by 24. Low-pressure discharge: A partially closed suction valve is the reason for low-pressure discharge; It happens when the ambient air temperature goes low ; Low suction pressure: Low refrigerant charge and leaking caused by low suction pressure; It may block your expansion valve. replaced drier core and gasket and Top up refrigerant Show all. 3~0. If you have any doubts on the operation, please feel free to contact S&A after-sales service team. YCAV and YCIV Low Suction Pressure and High Flash Tank Fault Troubleshooting YORK. 2 Malfunction of high pressure sensor System No. But my liquid line looks good 126 psig, 14 degrees subcool. EvAPORATOR. York Centrifugal Liquid Chillers, CodePak, Millennium,150 thru 1000 tons, R-11 & R-123Styles F & G, YDTL/LTL 108, 120, 126, 131 & 144 used with YTG1G1E1 thru YTL6M6F2, YTA1A1B1 thru YTL6X6F2 and YTA1A1B1 thru YTL3X3E2 YDTJ-CB & YTJ-CB used YORK INTERNATIONAL 7 This safety can be triggered by two events. Temperatures: Suction=83. If you have rota-lock valves, you need to bypass system low pressure alarm, connect your manifold gauges, close suction valve until suction pressure is slightly above 0 bar gauge and put charging hose in oil can. A. I have a problem with this system tripping on Low Suction Presure fault. 4 to 0. 2 min after starting it, it surges, shuts down and shows "evaporator - low pressure" fault. I have verified all transducers with a analog gauge to the micro with no issues. 76-O1 (321) Page 2 Model YK (Style H Aug 5, 2021 · York chiller yvaa0413gyv. Have a york YCAV randomly tripping high oil pressure differential pressure. We started it back up and the alarm is still present. 246. When it runs, the oil PSID is identical to the circuit 2 compressor. This is most likely to occur in the motor which drives the compressor. 9 Temp=82. It is important to note the 1875 in. . I verified all temp sensors are within 1 degree on my The suction super heat of centrifugal chiller is generally 2 ℃-3 ℃. Aug 15, 2022 · Any help would be greatly appreciated. Also for: Ycas0130, Ycas0230, Ycas0150, Ycas0160, Ycas0170, Ycas0180, Ycas0200, Ycas0210. Page 1 AIR-COOLED SCREW LIQUID CHILLERS INSTALLATION, OPERATION, MAINTENANCE Supersedes 201. Your compressor valves may become inefficient due to poor sealing from dirt and debris deposits. Found York air cooled chiller tripping on low pressure switch for both compressors. 2MPa, the low-pressure protection relay will act. 000 5FF, 95°F air on the condenser, 60 Hz and 4000 altitude. 4. Increased energy consumption. The suction pressure, along with the suction temperature the wet bulb temperature of the discharge air are used to determine the correct refrigerant These procedures apply to the YK, YD, YST, and CYK Centrifugal chiller compressor PRV and VGD actuators. 72-ICOM6 (615) Products are produced at a f ac il tywhose qu - management syste ms are ISO9001 certif Jun 28, 2011 · Forum Rules. Incorrect operating practices, negligence to maintenance, and incorrect chiller sizing are three common causes of chiller problems. Is this a screw chiller? Got a model number? Loading application Chiller; York YCIV0207; Low Suction Pressure Cutout (Software) Fault. Defective suction pressure 6. Normal compressor suction pressure ranges from 0. Pressures :Suction = 67 Discharge =113. Verify compressor is not over loaded. The design working pressure of the shell (liquid) side will be 10. Chiller fault - Low ambient temperature. High Discharge Temperature Cutout Fault A chilled water flow switch, (either by YORK or others) in the field. Page 1 AIR-COOLED SCREW LIQUID CHILLERS INSTALLATION, OPERATION, MAINTENANCE Supersedes: 201. To remotely start and stop the chiller, dry contacts can be wired in series with the flow switch and CTB2 - termi- nals 13 to 14. The normal suction pressure of the compressor is 0. High Differential Oil Pressure Cutout Fault. Summary of Contents for York YLUA0078. Page 1 AIR-COOLED LIQUID CHILLERS HERMETIC SCROLL Supersedes 150. YLAA Series chiller pdf manual download. AIR-COOLED SCREW LIQUID CHILLERS. Replace transducer/low transducer/low pressure pressure switch or faulty switch or wiring. Page 1 DC INVERTER AIR-COOLED CHILLER AND HEAT PUMP FORM NO. View and Download York YCAL0080SC installation operation & maintenance online. 21-NM1 (315) Form 201. The normal compressor suction pressure of a room temperature chiller should be 0. Designed for maximum efficiency in the real world where 99% of the cooling season is spent in off-design conditions. Suction superheat is 6K, Cond Pressure about 16 bar. Factory Address: 851 Tech Drive Telford, PA 18969. Make sure the outdoor disconnect switch on your outdoor unit is on the ON position (this switch is usually a small metal gray box mounted on a wall near the outdoor unit). 22°C To convert a temperature range (that is, a range of 10°F) from Fahrenheit to Celsius, multiply by 5/9 or 0. Solution is to degas through air separating valve, air outlet and the condenser of the chiller. 3°C). The chiller is completely self-contained and is designed for outdoor (roof or ground level) installation. cookeindustries. 2) The airflow to the condenser is restricted. 7 bar (300 PSIG) for the tube (refrigerant) side. Intelligent controls optimize energy. ATV Sprayer Pump Motor Does Not Run. 4)The airflow through the condenser is in the wrong direction. Hi. Compressor internal motor. Check to see if your circuit breaker is tripped to the OFF position. Any suggestions are appreciated. 73-NM1 (920) INSTALLATION, OPERATION, MAINTENANCE 035-22868-000 YLUA0078 – YLUA0158 AIR-COOLED SCROLL CONDENSING UNITS STYLE A and B (60 HZ) 80 TON TO 160 TON 281 KW TO 522 KW R-410A Issue Date: Jul 18, 2012 · Once the refrigerant is saturated with oil, low discharge SH will continue to occur. The dual-circuit evaporator will be the direct-expansion type, with refrigerant in the tubes and chilled liquid flowing through the bafled shell. COMPRESSORS The chiller has suction-gas cooled, hermetic, scroll com - pressors. The first is when the suction superheat is less than 2. Reduce demand and keep SH above 16 and slowly increase as SH increases. , 450 in. But the benefits don’t end there. 2 Malfunction of compressor current sensor Malfunction of pump inter lock Apr 8, 2020 · Suddenly, i got this fault on YMC2 chiller: "evaporator - low pressure" and system doesn't run anymore. 01 barg. controls and HVAC equipment, is proud to offer the YORK air-cooled scroll chiller. Low leaving chilled liquid - Chiller fault. nz Web: www. for some unknown reason the suction drops. Expansion valve is actuating. actuator requires a different troubleshooting procedure from the other actuator. Contact the local YORK Low suction pressure will service representative. 1431-183 A/C & Heating proudly serves Round Rock View and Download York YCAV1039 installation operation & maintenance online. (11. Innovative design with magnetic-bearing driveline. 3 bar (150 PSIG), and 26. 1. When this message appears, suction pressure limiting is in effect. , manufactures of process chillers for industrial and commercial fluid cooling applications. Page 8: Equipment Overview. Finding the Reason For Your ATV Pump Failure Shurflo pump pressure switch. chillers are rated and certified in accordance with ARI Standard 550/590 at ARI conditions. Summary of Contents for Johnson Controls York YK. The dangers of Oct 7, 2021 · Service call came in for chiller down ac not cooling. YORK INTERNATIONAL 5 FORM 150. cycle power to reset. May 20, 2020 · 17,701. Our wide range of designs for chilled water systems Suction pressure limiting in york yvaa chiller vsd #chiller #york #technology #how #hvac #alarm suction pressure limiting,suction pressure limiting york chi 150-2,020 TR (530-7,104 kW) The YORK® YZ challenges conventional, water-cooled chiller design to deliver superior performance, lower cost of ownership and a new definition of sustainability. 7. If all sensors and valves are working correctly, your problem is most likely oil carry over when intermediate valve activates at 60%. Page 134 4. Low Ambient Kit - FSC for fan -MF1 is only fitted on systems with less than 4 fans. Alternate connections shown for different two speed motor types. 21-NM1, -NM2, -NM3, 201. Determine cause and reset. Leaky oil separator return line. Lower cost of ownership and reduced emissions make choosing YORK ® HVAC chilled water systems a clear choice. As the compressor runs at low pressure and no-load, the motor load will be reduced. 6 lbs. May 13, 2014 · Working on a York Screw Chiller YCAS0100 and I getting a High Oil Diff Fault on circuit 2. Smart, connected technology. My transducer. YCAL0080SC chiller pdf manual download. co. When your thermostat is activated, the blower motor in your furnace or air handler should run (make sure Summary of Contents for York YVAG012. EXAMPLE – BRINE CHILLING. 2. Jan 19, 2024 · If the compressor is running at low pressure, the motor load will become smaller, and a chiller with a low-pressure failure will waste electricity under the same cooling conditions. 0°F - 32°) x 0. 5. Product. In refrigeration and air conditioning systems, the suction pressure' (also called the low-side pressure) is the intake pressure generated by the system compressor while operating. Each unit is completely as-sembled with all interconnecting refrigerant piping and internal wiring, ready for field installation: COMPLETE FACTORY PACKAGE • Each compressor is installed on its own indepen-dent refrigerant circuit, which is pressure Control Normal Operation - Call for compressor operation with 5-min ASCD active. 5556 = 7. if not the chiller would still run with little or no water flow. Fault Code Memory Cleared - Initiated by LAST ERROR pushbutton > 5 Seconds. Only fitted on systems with a maximum of 4 fans. 5556. 123. AIR-COOLED SCROLL CHILLERS WITH BRAZED PLATE HEAT EXCHANGER STYLE B (60 HZ) 4-10 FAN, 55 - 230 TON, 195 - 700 KW. 2 Mpa. Summary of Contents for York YCAV0157-0267. Circuit 1 compressor shuts down on low oil pressure during pump down only when the load is satisfied. 3 EER, and up to 0. I read one of the possible causes could be a blocked filter on the oil return line. 5)Short circuit between the pressure on the airside of the condenser fan and the suction side. , 800 in. 5556 = 5. Suction Pressure Transducers are re-quired for this function. I confirmed my head pressure does actually go up to 330 psig then trips on high head. Jan 3, 2020 · the "Sensor Failure" diagnostic is due to having the Suction Temperature sensor and/or Suction Pressure transducer are "out of range" which is < -12C and < 1. The 0064, 0074, and 0096 units have additional relief valves on the discharge line(s) in lieu of compressor internal relief. Page 1 AIR-COOLED SCROLL CONDENSING UNITS Supersedes 150. , 1100 in. 877-988-5464 Jul 13, 2023 · 1. Dirty evaporator surface. 2 Malfunction of low pressure sensor System No. The fault icon displays. YORK Model YT Millennium Centrifugal Liquid Chillers Engineering guide (Form 160. HPCO switch open. 220/230V units require a separate fuse for units with 4 or more fans per system. Under the same cooling conditions, a chiller with a low pressure failure will waste electrical energy. The relay plays the role of indirect protection equipment, compressor normal suction 125-300 TR (440-1055 kW) The YVWA Water-cooled, Variable-speed Screw Chiller was designed for efficiency, flexibility, sustainability and peace-of-mind. We’ll be glad to come out and take a look at the issue. View and Download York YLAA Series installation operation & maintenance online. Thankfully I was ab Oct 30, 2021 · This York air cooled chiller was tripping on low pressure safety. 72-ICOM6 (515) Form 150. 76-O1 (421) Issue Date: 2021-04-25 Supersedes: 160. Also for: Ycal0014sc, Ycal0020sc, Ycal0024sc, Ycal0030sc, Ycal0034sc, Ycal0040sc, Ycal0044sc, Ycal0050sc, Jul 1, 2009 · The optimum level for the flash tank is around 35-40% somewhere between the sight glass also the economizer solenoid is activated between 90-120hz on the vsd if that level in the flash tank exceedes greater than 87% you will fault out and trip. 21-NM4, 201. MUST be installed in the leaving water piping of the cooler. Solution: Increase the expansion valve opening appropriately, or replace the damaged expansion valve. So, in your first example the delta T was 11. Nov 20, 2006 · Legacy Chillers, Inc. If the suction pressure drops below 0. This message indicates that load limiting is in effect. Enough water flow rates. Engineering, Sales and Administration. It has a pressure setting of 400 PSIG (27. It could also be that there has been a ground fault in the motor and the chiller has detected this and shut itself off. , and 1875 in. air/min (166. I haven't found any refrigerant leak. 1 (1117) Form 201. We have pulled the gas out and weighed it back in to make sure we have the correct amount and all is good there. 245. MILLENNIUM Series AIR-COOLED LIQUID CHILLERS HERMETIC SCROLL. 23-NM2 (315) 035-21506-101 YCIV STYLE A MODELS YCIV0157-0397, 60 HZ (150-260 TONS) AIR-COOLED SCREW LIQUID CHILLERS E/V HIGH EFFICIENCY AND S/P STANDARD EFFICIENCY R134A Issue Date: March 9, 2015 Sep 18, 2020 · The main reasons your compressor will have simultaneously low head pressure and high suction pressure is due to: Bad or leaky compressor valves. Low global warming potential (GWP) refrigerant R-1233zd (E) Jul 12, 2022 · Forum Rules. No Fault Codes in Memory - Initiated by LAST ERROR pushbutton 1 Second. If you are experiencing a problem with your air conditioning or heating call us at 512-336-1431 to schedule an appointment. Accessing the fault query function Figure 12: Accessing the fault query function In the daily display, hold down the function key (A) and the cancel key (B) for 5 seconds. Jan 7, 2021 · Too little refrigeration steam will make the compressor inlet pressure low, resulting in a low-pressure fault. 8. If your expansion valve is blocked, then clean it or replace it Jul 1, 2022 · york reciprocating chiller low suction pressure alarm due to gas leaking from liquid line drier shell . 3 l/s). Benefits of Choosing YORK ® Chilled Water Systems: Using efficient units and intelligent technology mean you’ll save energy and cut emissions. 5 bar, freeze setpoint is -7C (glycol), leavig water T setpoint is 7C. No display on the control panel and unit will not run. le ku pq aj kg mg ym ra dw rj