Why did it fail??

Empire_2

Oil comes with the new compressor and is basically pre-oiled in the sump. You may want to look for Power problems like faulty contactors, chattering contactors, (for what ever the reason this happens), Loose connections which create excessive heat, and do not forget the power supply to the house. It is rare, but spikes can happen. There is a product called "Line Backer which will monitor single or 3 phase loads and will shut down the system before damage occurs. In addition it will tell you what happened......Pretty neat.

Have you checked the cap on the herm side of the capacitor?

Mike T.

rucomfy

Install a Bryant Heat Pump R22 system nine (9) years ago.
TESP @ .30" WC
Compressor failure, burnout. Compressor windings grounded. Compressor replaced. Acid test. Remove factory filter drier, install new neutralizer bi-flow in its place. New hard start kit and contactor. Second compressor lasted two (2) years. Bound up, drawing locked rotor and tripping overload, will not start.

I would like to know what I did wrong firstly to kill the first one and what did miss on the second????

Any thoughts or comments are appreciated. Thank-you.

Ted_9

oil

did you add oil the second time??



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rucomfy

No oil added.. why? I would have thought there would have been oil left in the system from the old compressor (that was probably contaminated). Thanks for responding. Your help and thoughts are important to my learning process.

Techman

Dead Compressors

Morning! Did you happen to measure the ammount of oil in the first comp?If #1 comp pumped its oil out into the system then #2 comp would pull back the oil from #1 and now be overcharged.If there was more acid in the system than the acid neutralizing capability of the new drier, goodby #2 comp.We install suction line acid driers,plus an "oversized" liquid f/d.It means more piping and more labor.If a 163 f/d was installed and the H.P. ran in the cooling mode only/mostly then the system is only "seeing" an 8 cubic inch acid f/d.Lots of possibilities for other causes of the failurers.Enjoy youy day!

don_185

Hows about

sharing some more readings? Like all the readings one needs on the refrigerant side of the system.

don_192

Forgot to add

That if your start winding is staying in the circuit it will act like a locked compressor and trip the over load.
So are you sure its locked up?

Also would like to say that you did nothing wrong with a heatpump system that lasted nine years,,nothing at all.

You have to keep in mind that the customer for the most part cause the early demise of most equipment.
Lack of maintence,not changing filters and closing off supply vents in room that no longer house the kids.

So,hold your headup and charge for your time and knowledge.

Ken D._3

Comp.

Check for liquid floodback. Superheat and subcooling should be checked. The contactor should be replaced when the compressor is. Coils clean? Is the ductwork adequate? Enough airflow in and out? Start relay dropping out? voltage proper? All the acid cleaned up?