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We suggest not registering using an AT&T, BellSouth, AOL or Yahoo email address. If you have any problems with the registration process or your account login, please. I'm sure I (and many others on here) could help you but understanding the complexity of that machine I'm somewhat reluctant to get too involved with someone that has no book, previous experience or training. There are alot of machines out there that people can be 'walked thru' on & this machine is hardly one of them. However, I'm willing to dig a little (very little) here to see what probability is of you succeeding at solving the problem with starting other problems. First, can you give us some service history? Some things you will want to check & report the findings here with a complete log: Oil level, refrigerant level in sight glass, make sure anything you read on the display is compared manual & visual checks.
Has anyone added refrigerant lately? Has anyone taken oil out or added any oil lately? What repairs (if any) has York done to this machine?
Someone on here may be able to send you an electronic version of the manual. Worst case, I could mail you one if that doesn't work. (assuming you are in the U.S.) lets start with that & see what happens.
If the suction tempt sensor is reading correct then you are pulling liquid from the top of the flash tank on the line to the side of the compressor. Remove the wire from the the economizer valve and see if the discharge tempt goes up.You either have a bad drain valve or the level probe is bad.Recheck your sensors, if they are ok then your level probe is bad.
Try removing refrigerant until you are flashing in the sightglass, your level will drop in the tank and your discharge tempt should go up. Order a new probe. Let's see if I can answer all three of you guys. I have been in the field 25 years and currently work for a major manufacturer as a lead tech. Unfortunately for me at this point, it is not York. This system is utilized for comfort cooling in a university housing building.
Standard 44F LWT. I like the idea of refrigerant being pulled off the flash tank. I had experienced two lockouts in the history due to high refrigerant level. I am in the process of verifying the charge and so far have removed an additional 25lbs. And am not through recovering. The compressor is very noisy, especially at start up.
I compared discharge pressure and temperature leaving compressor and there is no doubt that I am seeing saturated refrigerant leaving compressor. I was questioning the operation of the level sensor and drain valve. I do appreciate your feedback. Aejlpnk, I was just thinking about how I felt like a fart in a whirl wind the first time I got a hold of a YCAV. Actually, I think it had a hold of me. The level sensors are failing on these machines & there are few rumors going around as to why.
The most plausible one is that several of them were shipped with too much oil in them & the oil is coating the level sensor causing the failure. The sensor has to be replaced. No way around it as far as I know.
Then the oil level has to be corrected & the added refrigerant has to be removed. Also, the sensor goes for around 8 or 9 portraits of the forefather (politician) that smart enough NOT to run for president. Quick Navigation. Site Areas. Forums.
. Lower annual energy costs as much as 50% – Reduce energy consumption intelligently with standard variable-speed drive for the lowest kW/ton at design and off-design conditions. Improve sustainability from every angle – Lowering energy consumption means lower indirect GHG emissions from the power plant, and reducing refrigerant as much as 15% cuts direct emissions.
York Ycav Chiller Manual
Lower the volume with 16 dBA noise reduction – Variable-speed design dramatically reduces sound levels at off-design conditions; a variety of sound-attenuation options are available for design conditions. Feel confident with a proven performer – Over 2.5 million tons of YORK® air-cooled variable-speed screw chillers installed worldwide, backed by the world’s largest service organization.