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Old 06-23-2013, 06:07 PM   #16
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Trane XE 1000 outdoor compressor knocking - sometimes


Thanks Beenthere! I found youtube videos on crank case heaters. I will watch to see what that even is.

I learned in the past week about run compacitors, contactors, reversing valves - I have never even heard of these things before!

It's 94 here right now, and I heard it this morning when I was getting ready for work. It was not the loud jackhammering sound, it was a light knocking which stopped - after about 30 seconds or so!

Does this sounds like a liquid migration to the compressor during the off cycle you mentioned? What does that even mean? I thought Freon was a gas?

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Old 06-23-2013, 06:11 PM   #17
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Trane XE 1000 outdoor compressor knocking - sometimes


I did hear the jackhammering sound a few days ago, and it does not stop when it's that loud noise. It was over 90 degrees that day too!
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Old 06-23-2013, 06:34 PM   #18
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Trane XE 1000 outdoor compressor knocking - sometimes


VERY unlikely it is liquid slugging as that only happens when it goes down below 50F overnight. Freon is like Propane. part gas and part liquid in a bottle. If it is that warm outside then the ambient heat and temp will vaporize the liquid into gas so no slugging occurs. That heater is there for temps below 50F and usually has a built in thermostat to shut it off at 50F. See if you can record it somehow and put it on U Tube for us. Sounds like an intermittent mechanical internal problem. Usually when a internal mounting spring breaks it does it all the time but yours may be stretched and the compressor motor is hitting the shell occasionally. Nothing you or we can do about it and especially w/o beingthere ourselves.
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Old 06-23-2013, 06:35 PM   #19
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Trane XE 1000 outdoor compressor knocking - sometimes


as shown it either inserts into a well with BX run up to the contact area or wrap around band. http://www.ebay.com/itm/COPELAND-COM...-/330797312443

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Old 06-23-2013, 06:37 PM   #20
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Trane XE 1000 outdoor compressor knocking - sometimes


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Originally Posted by MarkGree View Post
I did hear the jackhammering sound a few days ago, and it does not stop when it's that loud noise. It was over 90 degrees that day too!
As Yuri said. At that temp it wouldn't be a liquid migration problem.
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Old 06-24-2013, 03:00 AM   #21
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Trane XE 1000 outdoor compressor knocking - sometimes


Thanks for that info Yuri!

So, are these springs mounted inside the red compressor shell? And this is sealed right, so I can't do anything?

What would cause the spring to stretch?

I guess it's like you stated Yuri, I've got to save and budget for a new system. I was just hoping I could do something to make it last longer! I will try to record it, but it does not happen every time, and when it happens it's right when the unit turns on, and it usually stops within 30 seconds or so -- And I really don't want to sit out there and wait for it to happen -- it's way too hot and sunny!

Thanks everyone for the help...if you think of something I could try or look for let me know!
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Old 06-24-2013, 08:59 AM   #22
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Trane XE 1000 outdoor compressor knocking - sometimes


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Thanks for that info Yuri!

So, are these springs mounted inside the red compressor shell? And this is sealed right, so I can't do anything? YES , YES AND YES

What would cause the spring to stretch? OLD AGE. METAL FATIGUE. IMPROPER HANDLING DURING INSTALL IF THEY CARRIED IT SIDEWAYS OR DROPPED IT

I guess it's like you stated Yuri, I've got to save and budget for a new system. I was just hoping I could do something to make it last longer! I will try to record it, but it does not happen every time, and when it happens it's right when the unit turns on, and it usually stops within 30 seconds or so -- And I really don't want to sit out there and wait for it to happen -- it's way too hot and sunny!

Thanks everyone for the help...if you think of something I could try or look for let me know!
......

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