Question about Heating & Cooling

1 Answer

My Trane heat pump makes whistle noise at the reversing valve. My HVAC tech says it could be a sticking valve or a bad txv any ideas

Posted by on


1 Answer

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Did you ever get a solution? I have the same problem. My tech also says it is the txv.

Posted on Nov 04, 2010


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.
New users get 2 Free calls (no credit card required) and instant help on almost anything you can think of (from cars to computers, appliances, handyman, and even pets).
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer

Where do I find my reverse valve

A reversing valve a type of valve and is a component in a heat pump, that changes the direction of refrigerant flow. By reversing the flow of refrigerant, the heat pump refrigeration cycle is changed from cooling to heating or vice versa.
make and model would help along with detailed question.

Diagnosing the stuck HVAC reversing valve

Jan 29, 2016 | Heating & Cooling

2 Answers

Brand New 2 weeks old 4 ton Trane compressor leaks a lot of water onto pad

If the unit is running in cold weather than there is ice building up on the coils located outside. This is normal in that the unit is running in heat pump mode heating inside and cooling outside, After the unit detects the ice build up it briefly reverses the cycle heating the outside coils melting(defrosting) the ice which you observe as water on the pad.

The video gives you an example of the defrost cycle!
2012 Trane XL15i Heat Pump Defrost Cycle Steam Show

Dec 21, 2015 | Heating & Cooling

2 Answers

Where do i find the expansion valve on a 3.5 ton trane air handler. Model no of the trane air handler is: 2TEC3F42C1000AA

The TXV (thermostatic expansion valve) is always at the end of the high pressure liquid line as it enters the evaporator. This is the small line. The outlet of the TXV will usually have 4, 6 or 8 smaller lines feeding proportional portions of the evaporator coil. You have to remove the cover of the evaporator to access it.

Some units do not use a TXV, so you may have a 'fixed restrictor' instead. It too is located where above described.

Apr 28, 2015 | Heating & Cooling

2 Answers

Ruud heatpump mod uprl024jez ser 7220m280813390 in heat mode 15 degree ambient 70 degree in house low side 55 high side starts out 250 steady climbs to out of sight r 410 reverse to cool low...

Remove bulb and warm with hand. Watch pressures to determine if txv is functioning. I do believe there is something out now that will free a stuck r.v.. Have not tried this but inexpensive start. At 15 degrees you're liking using heat strips, possibly machine trying to do both. Good Luck

Mar 19, 2017 | Ruud Heating & Cooling

1 Answer

The unit makes a noise. sounds like a pressure relief when the unit shuts off

If this is a heat pump when the unit shuts down it de-energizes the reversing valve causing it to shift and make a loud swishing noise, which equalizes the pressures causing that sound.
If it's an air conditioner you are probably hearing a pressure flow thru an orifice or a txv opening.

Jun 29, 2010 | Heating & Cooling

1 Answer

Air conditioner squeals when air turns on but not when heater turns on new 2 yrs.

Assuming this is a heat pump, more than likley the reversing valve is either going bad or there is a restriction in reversing valve. Regardless of what type of unit this is the parts are under warranty. Call a good Hvac tech to check out system.

Mar 28, 2010 | Heating & Cooling

2 Answers

Programmable T stat

your trane heat pump energizes the reversing valve with O - orange y - is to turn on the unit make sure you have your orange wire hooked up and the tstat programming set to heatpump otherwise your reversing valve might be bad

Jun 30, 2009 | Honeywell Electronic Programmable...

1 Answer

RUUD 14 seer heat pump makes loud squeeking noise after cycling.

Your problem is the TXV. I just had person with the same problem. Replace TXV no problem Rusty

May 01, 2009 | Ruud UAMB Air Conditioner

1 Answer

Goodman heatpump. Crazy pressure in heat mode

Check the TXV valve on the outdoor unit, it could be stuck closed. We have been experiencing the same problems with the 410 systems and the TXV was the culprit. Good Luck

Dec 19, 2008 | Goodman CLQ36AR49 Air Conditioner

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

Related Topics:

775 people viewed this question

Ask a Question

Usually answered in minutes!

Top Heating & Cooling Experts

Paul Carew

Level 3 Expert

2550 Answers

Dan Webster
Dan Webster

Level 3 Expert

8220 Answers

Donni Steen

Level 3 Expert

659 Answers

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

Answer questions

Manuals & User Guides