Original message
| orange20smoke20
 |  "Rudd 3 ton HP NEED SOME HELP HERE"
, posted Wed 13 Aug 07:17  
Good Morning All ..I have a Rudd UPNE-036JAZ Heatpump 3 ton that I been working on..the unit keeps tripping on low pressure cut out..checked pressures running very low 35/155..I know you all are going to say a leak...there is no leak..the RV wasnt energized in cooling so I switched the setting in the stat and it did energize but pressures went to what you would expect from heat mode so I switched back. No matter how much gas you add the pressure never seems to raise?????
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Replies:
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| sinead26ohara
|  "Re(1):Rudd 3 ton HP NEED SOME HELP HERE"
, posted Sun 31 Aug 23:37
You could have a RV hanging up.
Sinead O'Hara
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| coolboy
| "Re(1):Rudd 3 ton HP NEED SOME HELP HERE" , posted Wed 20 Aug 19:39
Compressor valves are shot. Replace compressor or unit.
If the work aint tight it aint right!
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| | theduke03
| "Re(2):Rudd 3 ton HP NEED SOME HELP HERE" , posted Wed 20 Aug 20:08
How could the unit trip on low pressure if the compressor valves are shot? I suppose this could be true if the system was empty and has bad valves but; if it was empty you wouldn't be able to verify the bad valves theory.
"My dad was the most feared furnace fighter in Northern Indiana."
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| theduke03
| "Re(1):Rudd 3 ton HP NEED SOME HELP HERE" , posted Wed 13 Aug 08:59
I'm not sure what you're saying about the revertsing valve but get it running in a/c mode. Measure the following and post results.
suction pressure
head pressure
suction line temp
liquid line temp
outdoor ambient temp
TXV or orifice?
"My dad was the most feared furnace fighter in Northern Indiana."
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