Question about Ruud UAKA030 Air Conditioner

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When charging the system do you have to remove the O ring lock and open the valve on the suction side? I cannot get the suction side to take the R22

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  • cv_belanger Sep 05, 2010

    My confusion is in the fact that I have a reading but cannot get the freon to go in. I was thinking that maybe I had to open the valve anyway.

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  • Master
  • 1,796 Answers

Hi!!

Remove the Low Pressure Service Port cap, hook up your Low Pressure gauge, if you have a reading, proceed to add R22 refrigerant to your system, if there is no reading, open Service Port Valve by turning the hex screw counterclockwise until you do, bleed the service hose, start unit and proceed to charge unit, once your're done, close Service Port Valve.

Don't forget to rate this post!

Posted on Sep 05, 2010

  • Rene J Solis Sep 05, 2010

    Go ahead and open the valve to refill but close it after your'e done.

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2 Answers

R22 unit running at 160/58. Took bulb out climbed to 61 on suction then right back to 58. Replaced txv. Charged to 220 head, suction stays at 60. Clean coil, no filter, good airflow. Ideas?????


Sounds like bad valves in the compressor.
A good indicator is how fast the pressure changes when you shut the compressor off. It should take several seconds for the suction pressure to rise. If it's immediate, then expect a bad valve.

Mar 07, 2016 | Heating & Cooling

1 Answer

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i would suspect the valve on suction side not open. if the other system failed on a burn out you could have a blocked dryer or orfice at coil.

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Voltas 5.5tr pacage ac suction line and compressor make ice, what can i do


CHECK FREON PRESSURE, COULD BE LOW, THAT WELL CAUSE LOW SIDE LINE TO FREEZE IF LOW, DO NOT OVER CHARGE SYSTEM.

Feb 21, 2013 | Heating & Cooling

1 Answer

Have a 11yr old RUUD Uaka 060jaz with the A coil frozen, solid, no air getting through. Service tech came out and charged system with minimum 3lbs of r22 but suction pressure wouldn't go above 6


Hello, typiccally with noncondensables in the system your head pressure would be alot higher. 175 is pretty low high side pressure. Usually coils will freeze due to either low airflow or low refrigersmt charge not becuase of non condensables. I would get a second opinion from a differant company.

Jun 28, 2012 | Heating & Cooling

1 Answer

TRIED TO GET SUPPER HEAT MEASSURMENT AFTER THAWING OUT THE EVAP. OUT SIDE TEMP WAS 95 THE SUCTION LINE TEMP 77 AND THE SUCTION PRESSURE WAS 42 AT THE GAUAGE. BUT THE SUCTION PRESSURE WOULD DROP PRESSURE...


You have to let the system run for a while for the suction pressure to stabilize, if the metering device is a TXV pressure will rise and fall as the valve opens and closes. If this is R22 you need to get the suction pressure up

Jun 23, 2011 | Heating & Cooling

2 Answers

HOW TO RECHARGE SPLIT TYPE AIR CONDITIONER WITH USING r22


check cooling coil(in door unit)if there ice buil up then feel air vent if no air mean your fin block aready need to clean / air vent ok meant there have a leak .you need r22 test gauge and hose,reamer,tube cutter and flaring kit. 1)check suction pressure(big tube at out door unit) remove 2 way cap and 3 way cap valve then connect blue hose at service port 3 way valve (port locate at left or right depent on manufacturer) you will get pressure about 40-45 psi(air cond is running) then use a allen key(hexagonal wrench) to close 2 way valve(small tube or gas discharge side) wait 1-2 minute then close 3 way valve (suction tube or big tube) IMMEDIATELY SHUT OFF AIRCOND AND PLUG OUT POWER CORD (you need 2 person one at in door unit and the other at out door unit). this method is to keep remaining gas inside the compresser.Then leak check ,open 2 way valve about 90 degree hold it for 10 minute then close it .MEASURE THE PRESSURE keeep it for 5-10 minute. If the pressure indicate not same during the first time measured it meant there have a leakage, for air cond 1- 5 year the leakage will happen at the copper tubing connection and improper flaring .Then U need to clean in door and out door unit ,used a spanner or wrench to losen the copper FLARE NUT at out door unit and in door unit( inside insulation) then use pvc tape to cover all copper pipe/tube hole to prevent dirt go inside tube/pipe. Then lift up out door unit and used coil cleanner ditergent wait 5 minute then flush with water. Remove indoor front panel then disconnect out door unit cable at front panel in door unit then lift up indoor unit to disangage the hook and pull out the indoor unit, then clean the cooling coil ,cover electrical part with plastic .last step u need to cut (used cooper cutter)the copper pipe/tube FLARE NUT connection low side(big tube) and high side(small tube) in door connection and out door connection .Then u need to remove the burr from cut edge using reamer make sure metal powder not goes in Then make a flare after inserting FLARE NUT onto the copper pipes Then U can install back the unit check the low side pressure if the pressure 55-67 psi no need to charge

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2 Answers

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those seem to be very acceptable numbers you are stating if this is R22 running in summer temps. Im curious what pressures you are striving for?

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I would go for 40 on the suction and 150 discharge, or divide the locked rotor current by 6 and charge so the current is 1/6 of the locked rotor current of the compressor, or by temperature/pressure relation 110* discharge and 35* suction, or get the suction line sweating. The best way is to remove all the refrigerant and then weigh the refrigerant the system is designed for on these critical charge appliances.

May 20, 2009 | Amana 22.6 cu. ft. Side-By-Side...

2 Answers

Discharge pressure reading 150 psi and suction reading 70 psi what could cause this problem on a heat pump? this is a r22 system


need to know the room temp and out side temp but the expansion valve could be sticking open or the compressor could have bad valves hook up hi side hose to true high side port and shut the liquid valve off in the line set in cooling mode make call for unit to come on and as it pumps down the hi side should go up if not the comp is week but if room temp is 85 or higher and out side about same still low on charge the suction will fall when room cools and the expansion valve quits flooding the coil

May 10, 2009 | Heating & Cooling

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