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York ydaj millenium air cooled chiller compressor is working but after few hours the complete system of that is going shutdown and showing the low oil pressure. even i replaced the oil pressure transducers, it's same what is the reason

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Posted on Jan 02, 2017

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SOURCE: can you bypass high pressure transducer on a york

no you cannot

Posted on Jul 16, 2010

  • 1 Answer

SOURCE: our york MAXE screw chiller

My chiller was high pressure trip and i cannot reset the fault using 9675 and 1380 passcode! What should i do ?

Posted on Jul 29, 2011

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York chiller YDAJ model chiller compressor trips in low oil pressure after running for sometime. To solve it i changed the oil & the oil transducer but still tripping what can i do


You could be light on charge or the oil pump is failing. There may be a delay setting that is set incorrectly. I see that with several 507 systems.

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It sounds like you've done just about everything except to check if there is a bad or intermittent wire causing this or perhaps your low-pressure safety cutout switch is possible going bad causing the compressor to kick on and off?

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This compressor is in my aquarium water chiller. When I plug in the chiller, The compressor starts then goes off. a few seconds later it starts again then goes off. It continues to do this. I have changed...


The Freon is probably a bit low. When the compressor draws from the low side the extreme low pressure trips the low pressure switch, shutting down the compressor. With compressor off the pressure equalizes the low pressure switch opens and the compressor switches on. murf427

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Showing a LP on display. What are the possible problems?


Here is the reason for that problem per the manufaturers web-site

http://www.haywardnet.com/products/Manuals/pdfs/Manual122.pdf

The low-pressure switch senses the refrigerant pressure in the sealed refrigeration system to

protect against certain conditions that could be detrimental to compressor life. The switch shuts

the unit down in the event of loss of refrigerant, fan motor failure, evaporator freeze-up and

airflow blockage. The switch automatically resets when the pressure rises to normal operating

pressures. The display will show "LP" if this switch is tripped.

Evaporator Freezing

The low-pressure switch will shut the heat pump down when the evaporator starts to freeze.

When the unit starts to freeze the low-pressure switch will be tripped, causing the display to read
"LP" This will prevent the evaporator from becoming damaged or deformed.

If the air outside the heat pump is not warm enough to produce heat, the system will shut down.

The actual point at which your unit will shut down due to low temperature varies depending on

which model you purchased, current weather conditions, and the amount of sunlight reaching the

heat pump. The shutdown can occur anywhere within a wide range of temperatures, usually 45°F-

55°F. This is not a "fixed" range. We stress that climate conditions, sunlight, and various models

respond quite differently to low ambient temperature. A shutdown occurs because low

temperatures will activate the systems low-pressure safeguard switch (digital thermostats will

display a code "LP".) The unit will start up again when the temperature has raised enough to reset

this switch. Note: Low ambient temperature does not necessarily affect the Chiller models
or the cooling cycle of the heat/cool units.

If this post has helped you, please take the time to vote positively for me on this site. If you need additional help, I can be reached @: adamh@newconceptchem.com

thanks,

adam

Oct 23, 2010 | Hayward Heatpro 81k Btu Swimming Pool Heat...

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Air conditioner


The squeeling is the belt because the air compresor is likely seizing. At idle it can't turn the compressor, in motionthe compressor probably turns and cools the air. Most air conditioners come on when the defroster is on.

Jul 26, 2010 | 1996 Nissan Quest

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Part no. expansion valve of Air cooled chiller


On a chiller with semi hermetic compressors can have different types of thermostatic expansion valves for metering. As far as a number, you will have to go to the evaporator to look at the tx valve and get the numbers. It may be a single ported, double ported, be externally equalized or not. You have to get the copper line sizes in and out also if you are planning to change the valve out. The valve will also have the type of freon the system uses if for some reason the data plate is worn off. That's the place to always find out is the expansion valve. If you need information other then what I have given you, contact me and I will help you.
Sincerely,
Shastalaker7

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1 Answer

York 3phase compressor tripping on low currant microprocessor.


If the unit is single phasing this is not good for the compressor. Does the system have a phase monitor? If not I would suggest you put one in to save thousands of dollars on the replacement of the compressor. How is the oil level? I ask because this are not to run themselves out of oil.

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