Question about Heating & Cooling

Open Question

What is the low pressure for a 410A 3 1/2 air cond when it is 80 fahrenhait degrees.

Posted by on


6 Suggested Answers

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya Repairman can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US.
click here to Talk to a Repairman (only for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017

  • 33 Answers

SOURCE: 98 Chev pickup air cond problem

1. Have the refridgerant fluid level checked. (Could be low)

2. Have you tried putting it on recirculate? Could be a venting issue.

Other than that it's out of my league.

Posted on Jul 08, 2008

  • 340 Answers

SOURCE: Pressure on the low side

should be above 57psi. Tom

Posted on Jun 23, 2009

  • 334 Answers

SOURCE: I am trying to regas a Panasonic CU-A24BKP5 split

OK, now we need to let the comopressor cool down if it is hot. Once it is cool, (that could take a while if it is so hot it tripped out on internal overload.) check for continuity between the compressor leads. If they show continuity between them hook the wires back up and turn it on, Check the amp draw at start up, and check the voltage to the compressor.

The compressor is bad If....
1) there is no continuity between the compressor leads.
2) if you have an amp draw but the compressor is still not pumping refridgerant.

If you do niot have voltage going to the compressor, then we will need to trace down the cuase for loss of power.

Posted on Oct 17, 2009

  • 1 Answer

SOURCE: Tank full - but Low flame pressure; temperature

turn you gas on slowly . i should work

Posted on Sep 15, 2010

  • 3740 Answers

SOURCE: We have a Grundfos MQ3-45B

Hi and welcome to FixYa. I am Kelly
Drain the pressure tank completely. The tank is designed to have a pressurized pocket of air at the top of the tank that would allow the tank to act as an accumulator when pressurized. If the tank does not have that air bubble the pump will cycle quickly and lose pressure almost as soon as you put any demand on the pump. After you drain the tank, just reinstall the drain plug and test. It should work normally. If it does not work normally then there is an unknown water distribution leak in your plumbing.. You can eliminate house plumbing by truning off the water supply after the pump and then see if the pump still cycles. If it does then pressure is leaking back into your water source. There should be a check valve to prevent the pump from pressurizing your water supply. If the check valve has failed or some internal debris not allowing the check valve to close you will have the symptom you describe.

Thanks for choosing FixYa.


Posted on Sep 29, 2010

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

What is the low pressure for a 410a 3 1/2 York when is 90temp at fh outside.

The outside ambient temp has little effect on the suction pressure. The indoor temp is what will slightly effect the suction pressure. In the trade we say we want a 40 degree evap coil, this means approximately 125psi. This is when the indoor temp is around 74 to 78 degrees. The hotter the house, the higher the pressure. I like to see a 50 degree evaporator when the indoor temp is above 80. Charging by subcooling is the way to go!!

Sep 21, 2017 | Heating & Cooling

1 Answer

What is a 410A 3 1/2 ton air-conditioner low pressure at 80 degrees

??? 80 degrees ??? Anything below 100 psi is going to start freezing up. 410a refrigerant is approximately 32 degrees at 100psi. Typically a 410a low pressure switch will open at 50 psi.

May 08, 2017 | Heating & Cooling

1 Answer

I am working on a M # GPG13420901AB. This is a 3.5 ton package unit that replaced a 3 ton package unit on 1700sq/ft single level home. Old unit was working fine but was replaced when the home was...

It sounds like you are low on charge. I think you have a thermostatic expansion valve and you need to check the subcooling, you should have 12 to 15 degrees at 95. At 95 degrees your head should be about 280# for a 12 or 13 SEER unit or higher depending on the effeciency. At 78 to 80 degrees indoor depending on the humidity, that is normal. The valve will open to try to fully feed your indoor coil and it sounds like your head pressure is to low to force enough refrigerant thru the coil.

Aug 16, 2010 | Goodman Heating & Cooling

1 Answer

I have a thermal cool portable air cond. package unit. Mod. # mac 12, it runs but will only cool to 71/70 degrees. theres no shreder valves to check press. should i put one in on the suction side, and see...

Hi; Please dont take this the wrong way but never open a closed freon system unless You suspect a leak and can find it..Is the unit trying to cool a space too large for the BTUs of cooling avaliable. Is the suction line sweating back to the compressor. Are the evaporator and condensing coils clean. How old is the unit. Is there still a warranty on the unit. There is a device called a pressure temperature chart. In other words if You can determine the temp. at the suction line withen 6 inches from the compressor You can cross reference the freon pressure.
Also rember the output cooling temp. will only be 15 degrees cooler than the temp. inside the space being cooled . So if its 80 degrees in the space being cooled the unit will give about 65 degree air.

Feb 22, 2010 | Heating & Cooling

1 Answer

High pressure air cond line has frost about 10 feet inside home

You have a low freon charge or a blockage in air flow. Check the filter if it is clean then there is a low freon charge in your system in which an a/c tech will be needed.

Good luck on repairs


Jan 06, 2010 | Amana PTH123B35AJ Air Conditioner

2 Answers

ASU9RLS/AOU9RLS unit Froze outside/ won't defrost

The drain had pine needles clogging the drainb so it couldn't drain.
In 2 months.... Thanks anyhow!

Jan 05, 2010 | Fujitsu Electronics - Others

1 Answer

Not running; msg18 mini split , defrost board blinking 5 times.

check freon to low or to high. must be charged liquid 410 tank upside down.

Dec 14, 2009 | Heating & Cooling

1 Answer

Senville mini split codes

Put gage on low side and check the pressure running. if it is less than 125 you probably have a leak.

Apr 30, 2009 | Heating & Cooling

Not finding what you are looking for?
Heating & Cooling Logo

Related Topics:

38 people viewed this question

Ask a Question

Usually answered in minutes!

Top Heating & Cooling Experts

Paul Carew

Level 3 Expert

3092 Answers

Dan Webster
Dan Webster

Level 3 Expert

8220 Answers

Tim Whalen

Level 3 Expert

3074 Answers

Are you a Heating and Cooling Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides