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High liquid press/low amps
Banjo_Jim
Member Posts: 6
3T Kenmore (sears) R410 16 SEER central unit, FL 14A, 5 years old
Pressure and amp numbers from Tech (as I remember). I can take temps with IR gun. Ambient temp 80d-60%; condenser temp 80in/110out, lots of air flow; at condenser high side >500psi-82d, low side 110psi-62d; at evap liquid line 85d (both sides of filter/drier), low side 55d sweating; condenser amps are <6A; return air 75d, supply air 60d
Evap coil replaced 3 months ago due to loss of refrigerant. Worked OK until mid-August when a loss of cooling and end to end frozen suction line was observed. Tech recharged using weight and sub-cooling temps (he said, I don't have gauges) and installed UV indicator before a return trip next week. He is concerned the high head pressure indicated a failing compressor. I maintain a failed compressor cannot cool the house with normal values everywhere except a high head pressure and be failed/failing. Does not make sense. Any ideas? Thanks for reviewing.
Pressure and amp numbers from Tech (as I remember). I can take temps with IR gun. Ambient temp 80d-60%; condenser temp 80in/110out, lots of air flow; at condenser high side >500psi-82d, low side 110psi-62d; at evap liquid line 85d (both sides of filter/drier), low side 55d sweating; condenser amps are <6A; return air 75d, supply air 60d
Evap coil replaced 3 months ago due to loss of refrigerant. Worked OK until mid-August when a loss of cooling and end to end frozen suction line was observed. Tech recharged using weight and sub-cooling temps (he said, I don't have gauges) and installed UV indicator before a return trip next week. He is concerned the high head pressure indicated a failing compressor. I maintain a failed compressor cannot cool the house with normal values everywhere except a high head pressure and be failed/failing. Does not make sense. Any ideas? Thanks for reviewing.
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Comments
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I agree he is scratching his head, but how about a hint of what you think is going on. Technically.0
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How can you work on anything without gauges?!?!Single pipe quasi-vapor system. Typical operating pressure 0.14 - 0.43 oz. EcoSteam ES-20 Advanced Control for Residential Steam boilers. Rectorseal Steamaster water treatment0
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Thanks for that. I am the homeowner trying to resolve the thought the compressor is bad giving you the info I have available.0
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Ya know, critics are a dime a hundred. Thinkers? Now you got something.0
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Ironman said:With almost 50* sub cooling, I'd say it's severely over-charged and/or non-condensibles are in the system.
How did he know what the sub cooling was without gauges?
Maybe I misunderstood something when I read the original post?
Single pipe quasi-vapor system. Typical operating pressure 0.14 - 0.43 oz. EcoSteam ES-20 Advanced Control for Residential Steam boilers. Rectorseal Steamaster water treatment0 -
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I'm thinking it was never evacuated properly or improperly brazed during the coil replacement. Non condensibles or plugged TXV are causing high head pressure. I agree that you need a new tech. At least make sure the condenser coil is clean. It can't be good for the compressor to run under those conditions. Sounds like another piss poor2
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I agree with all who say contaminated refrigerant/non condensables. The position taken by you, Ed and others is what I will bring to my warranty service Tech.unclejohn said:Except of course no one on this site would ever dump the charge. What Ed means is reclaim the refrig. and replace the dryer and pull a deep vacuum and weigh in charge.
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Last question; is there anything in the discussion that would indicate a compressor failure or need to replace the compressor? Based on my available data.0
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