Question about Intertherm P3RA-048K Air Conditioner

1 Answer

My intertherm heat pump has freon but will not heat is it posible that the reversing valve is stuck in the middle and will not let it heat if so where can i get a new one.

Posted by on

  • Perry Putnam
    Perry Putnam May 11, 2010

    Yes it's possible but an expensive and difficult repair. Does it cool? I would get a tech. out.



1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 20 achievements.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

  • Master
  • 3,361 Answers

Verify power to the reversing valve relay.
Some reversing valves energize in HEAT some in COOL.
Tap the reversing valve with a hammer handle while it is on. If it is stuck, it may come unstuck.

Posted on Mar 03, 2009


1 Suggested Answer

  • 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 expert 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 repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer

I have a 1999 comfortmaker heat pump i need to know if the revercing valve is normal in heat or cool

not sure if this helps but is how it works...
Comfort Maker energizes the reversing valve in cool. The reversing valve coil should be wired to "O" from the thermostat. Take the wires off the the reversing valve coil, it should switch to heat. If it does not, and the compressor is running, the reversing valve is bad! Replace it.

Note: that clicking sound you hear was the pilot valve in the reversing valve. Within a couple of seconds of hearing that click, it should have reversed. IF it does not, you have a bad valve.

Electricity switches the pilot valve. The pilot valve switches the Freon pressure. Freon pressure switches the reversing valve.
hope this makes sense.
best to you.

Dec 31, 2017 | Heating & Cooling

1 Answer

Why does it shut off after it starts ? 2a6b3060a1000a american standard

It sounds like a stuck reversing valve stuck in heating mode based on a hot refrigerant line.
It could be stuck in the heat position because it isn't receiving 24 volts to operate, or it could be stuck internally.
Tapping on the copper tubes on the reversing valve sometimes frees one that is stuck internally. It is copper so don't get carried away or you will destroy the reversing valve.
Did you feel the temperature of both copper lines?
If the reversing valve is stuck in heat, during the winter, your heat pump will ice up, because it isn't reversing to cool as it should when it calls for the defrost cycle to occur.
Google "heat pump reversing valve" to see what one looks like
You'll need to use a voltmeter to verify that the reversing valve is receiving twenty four volts.
Pull the two wires at the reversing valve coil and check for 24 volts.
If you don't have 24 volts there when you put the unit in cooling cycle,you either have defective thermostat wiring, or a defective thermostat.
If you have 24 volts you will need to check the electrical coil that the two wires plug into.
Set the voltmeter to ohms, and make contact with the meter leads onto the terminals of the coil. One lead goes on one terminal and one lead on the other terminal at the same time, to check for continuity. You should get an ohm reading. That means the coil is good.

If the meter indicates "0" ohms the coil is shorted and needs replacement.
If the meter doesn't read any ohms at all that means that the coil is burnt out and needs replacement

When the reversing valve is activated there will be a "whoosh" sound you can clearly hear if you are near the outdoor unit.

You can order the A/C parts you need online unless you have friend that is a HVAC tech and he could get one from the Trane supply house.

It is a big job to replace the reversing valve involving freon removal and brazing. Hopefully you will find the problem in the wiring, Thermostat, or the reversing valve coil.

May 16, 2014 | American Standard Heating & Cooling

1 Answer

Why does the heat pump operate in heat when cooling is set at the thermostat

You could have a problem with your controller

You could have a Wiring Issue that is not allowing the switch

You could have a Valve Issue....

Apr 12, 2013 | Intertherm Heating & Cooling

1 Answer

Bryant furnace model FX4C, FY4A with heat pump and a/c will not switch from a/c to heat pump. Only have heat with emergency heat on.

WELL this could be a couple of problems the reversing valve could be stuck either from not enough pressure which would be a leal and low on freon or the unit is off on low pressure switch/high pressure switch from either being low on freon or something restricting it and caused unit to shut down, ive been a servicer for many years and if it gets below 30 degrees outside i would recommend running the e-heat anyway it does cost more money minute for minute. but you will find it will heat alot faster in those colder nights than the heat pump therefore cost is about the same.
as far as not switching over could be low on freon or a stuck reversing valve... is the outside even running in cool mode if not the you may have a tripped pressure switch...good luck

Jan 04, 2011 | Bryant Heating & Cooling

1 Answer

I have a older Intertherm heat pump that has quit heating but still cools alright does anyone have any suggestions what could be wrong??

Check your reversing valve, When you set your thermostat for heat the reversing valve circulates the heated freon through the air handler instead of the cooled freon. The valve is called many things but it reverses the flow of freon See and look at the different schematics

Dec 19, 2010 | Intertherm P3RA-036K Air Conditioner

2 Answers

Weather King 10PJB18A01 heat pump. Compressor is working, however reversing valve is stuck in cooling mode. Need HEAT! Can this be fixed without replacing entire compressor?

yes it can be fixed with a reversing valve replacement or you can check if the solnoid on the reversing valve when in heat mode is energized if not then replace

Jan 06, 2010 | Weather King 10PJA4301AH Air Conditioner

1 Answer

Intertherm Heat Pump

Some of the old heat pumps made the reversing valve in the heating mode. On your new thermostat the orange wire will need to be on the B terminal. If it was color coded? I hope you made notes of how it was.

Jan 05, 2010 | Heating & Cooling

1 Answer

Reversing valve issues.

You will need to replace the reversing valve. You cannot replace the coil with a remote sensing bulb on this unit. Usually you know when reversing valves get stuck when you are having low side problems with heat working properly

Jun 01, 2009 | Ruud UPMC036 Air Conditioner

1 Answer

My intertherm heat pump has freon but will not heat is it posible that the reversing valve is stuck in the middle and will not let it heat if so where can i get a new one. My heat pump cools good and when...

You can't replace a reversing valve (must remove ALL refrigerant first), unless you are EPA certified and have the equipment to recover the refrigerant and to braze the old valve out and the new one in. That said, it's probably an electrical problem anyway. Could be the thermostat, the thermostat settings, the wiring between the thermostat and the furnace and the condenser, or the controls in the condenser - probably not in the furnace. If you don't see anything wrong you're probably gonna need a pro.

May 05, 2009 | Heating & Cooling

Not finding what you are looking for?
Intertherm P3RA-048K Air Conditioner Logo

Related Topics:

247 people viewed this question

Ask a Question

Usually answered in minutes!

Top Intertherm Heating & Cooling Experts

Dennis Boxerman

Level 3 Expert

1250 Answers

Dan Webster
Dan Webster

Level 3 Expert

8220 Answers

Bill Long

Level 3 Expert

588 Answers

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

Answer questions

Manuals & User Guides