20 Most Recent Whirlwind FH-778 Air Conditioner - Page 4 Questions & Answers

I would suspect the unit was freezing up the whole time you were out if the ice is all the way out to the condenser and over the compressor as well as it being thick and solid. The shrader type valve could have finally leaked out enough and you can check by placing soapy water over outlet if the unit still has some pressure and it will bubble up. I would venture to say it is on copper in the evaporator compartment that has been rubbing together over the years or connections right where the end of the coils pass through the metal endplate on the coils. Your pricing should be in the range of $90 service call that counts first hour plus refrigerant at $35 per lb of refrigerant.

Whirlwind FH-778... | Answered on Aug 17, 2010

first, obtaining the correct charge is rather tricky .. it depends on inside and outside temperatures and humidity .. you need gages to measure both high side and low side pressures accurately and match those figures up to a chart that considers inside/outside temp and humidity ... in a new install you can calculate the required charge based on numbers given by the manufacturer modified by the length of connecting pipe set ... before charging, the system had to be vacuum pumped for an hour or more (unless the system came precharged) .. all vents in the house should remain open for air conditioning and the furnace blower speed chosen for a specific temperature drop across the cooling coil .. some AC repair people dont know how to do all that properly .. it takes a true professional to optimize the system .. if you can find someone that really knows how to do this then you might try to bargain for a good price for him to just trim you system ..

Whirlwind FH-778... | Answered on Aug 15, 2010

Go to your local Board of Construction website and you can print off your applications there and it will also explain the requirements and charges. It is usually 3 years verifiable experience in that field before you can even take the test. Since each state differs, I can't really explain everything in perfect order, but like I said, if you go to your local Board of Construction website, you should have everything you are looking for. Hope this points you in the right direction!

Whirlwind FH-778... | Answered on Aug 12, 2010

Window A/C units are not made to be serviced. The only way to properly add refrigerant to a window unit, is to use a piercing valve, recover all the refrigerant from the system, braze on access fittings, then purge the system, evacuate the system, and finally charge the system. This procedure requires the correct equipment and a valid EPA card. Hope this helps

Whirlwind FH-778... | Answered on Aug 11, 2010

No you dont have to charge it manuelly as All units come fully charged and tested– direct from the factory.

Whirlwind FH-778... | Answered on Aug 09, 2010

It is always best to charge 410a as a liquid to ensure that you get the proper mixing of the refrigerant...just turn the can upside down and take your time adding the liquid slowly...with the unit running.


Whirlwind FH-778... | Answered on Aug 09, 2010

normally if it s pulsing it is overfull of freon, inside coil is very dirty, or someone has topped off your unit and introduced air into the system.

Whirlwind FH-778... | Answered on Aug 08, 2010

Hi, so you have a central air split system, with the gas furnace in the attic and the condenser outdoors. Unless you had a service tech out and told you your system was shot, you more then likely just have a problem with the outdoor unit. Yes, it may be a freon problem and it needs a charge, or some minor problem in one of the electrical circuits not bringing on the compressor so there would be no cooling. $6,000 sounds about right for a complete system, but I don't believe at all that's what you need. If you are familar with electrical, or you are able to go to the outdoor unit to see if you can hear the compressor running, and the outdoor fan is on, this is the place to start. Look it over, turn the unit on and make sure the blower is coming on in the attic. If so, make sure the outdoor unit is up and running. You can take off a panel and hear the compressor to see if it is on. If so, its very possible it is just low on freon. You will have 2- copper lines coming out of this unit. Place your hand on the large line and see if it is nice and cold and even wet, condensation. The smaller line will be much warmer, even hot if its running ok. If you find that the compressor is on and the line is warm, sounds like it may just be a leak and you should call and get a tech out to check this for you. It may be many things, but check to make sure that what I have told you is ok, and keep me posted. Until we find out what is going on, don't let them tell you you need to install a complete system. I am sure you were just checking. Please give me the model and serial number, and name of the outdoor unit if you would be so kind. And the age and over all condition that you think it may be in, like the last time it was serviced. I will wait to hear back from you, so we can get this up and running.
A/C, Heating, & Refrigeration Contractor.

Whirlwind FH-778... | Answered on Jul 28, 2010

A 30lb bottle or R22 Refrigerant your cost would be $650. As a Licensed Refrigeration Mechanic, I would charge 4 hour minimum for leak check and repair. The hourly charge is $75 and the Refrigerant which is extra to the price is $35 - 40 per pound. As the price of R22 Refrigerant goes up in price as it is being phased out per Government Regulations, you will see $75 - $100 per pound +. As for my pricing, my fellow workers say I charge too cheap. If you take $650 and divide it by 30, it would be $22/pound, but it can only be delivered to you and charged into your unit by a Licensed Refrigeration Mechanic...then the labor comes into effect for all of this. So in an nutshell, if you were charged $30 - $75 / pound , I think you did well.
I hope this clears it up.

Whirlwind FH-778... | Answered on Jul 23, 2010

The back pressure on the suction side should be around 65-70 psi with R-22. Make sure the condenser coil is clean and that the condenser fan is working ok.

Also be sure the indoor filter is clean and that fan is running on high speed.

Whirlwind FH-778... | Answered on Jul 23, 2010

Yes you do have a leak and you need to get that fixed and then add more refrigerant...

Here is a tip about trouble shooting your air conditioner...

Air Conditioner Trouble -Review the Possibilities


Whirlwind FH-778... | Answered on Jul 22, 2010

It's 98 outside ... that says a lot. The gurgling is an indication that you are getting a lot of water out of the air (dehumidifying). If the unit is sized just right, or just a little too small, it may be working perfectly well.

You don't say where you are, geographically, but much to the US has an air conditioning design temperature of 95 degrees F. That means at 95 degrees, the unit will run continuously. With a 50% outside air relative humidity, it should keep the occupied space at about 75 degrees F. The more humid the air, the more the unit works on dehumidifying and less on cooling.

Give it some time, wait unti the weather breaks and see if it doesn't run just like it used to. If you chose to call a technician, have him/her take temperature readings of the condenser entering and leaving air, the suction line temperature, the liquid line temperature, the inside supply and return air temperature (dry bulb and wet bulb) as well as high and low side refrigerant pressures. Before they make ANY changes to the system (refrigerant charge) have them explain what they found wrong and make sure you understand what they are talking about. Adjusting the charge under these conditions, will mess up your operation under normal conditions.

Whirlwind FH-778... | Answered on Jul 20, 2010

The issue is with the thermostat wiring. Depending on the heatpump, the Y1 wire is used to start the compressor, usually in the heating mode and the O wire operates the reversing valve, to bring on cooling. The crossed wire could be at the thermostat or at the unit. You likely have had techs that have little or no heat pump experience, this is a simple issue. Locate a good heat pump tech and have him/her fix it. Document the repair and send a demand for repayment from the ones that have been out. They need the education such a bill will bring them

Whirlwind FH-778... | Answered on Jul 19, 2010

That needs to be done by a professional that has the proper equipment and knows how to do it with out getting hurt...

Here is a tip about trouble shooting your air conditioner...

Air Conditioner Trouble -Review the Possibilities


Whirlwind FH-778... | Answered on Jul 19, 2010

Depending on where you live, you would need another
200.00 to buy the freon and another 60.00 to buy the
refrigerant gauges.

Turn the unit off outside, turn your thermostat all the way to cool and as low as it will go. Go back outside
and turn the power back on, The condensor fan and the compressor should both be on.

If neither one is on, or one is and one is not then 40.00 might be able to buy you a hard start kit

Whirlwind FH-778... | Answered on Jul 16, 2010

sounds like a contactor problem. this is the switch that kicks the outside fan amd compressor on. If the inside fan runs it will be on the outside.

Whirlwind FH-778... | Answered on Jul 16, 2010

Yes it does sound like one of them is trying to take advantage of you. Most likely the sales rep. But not to stick up for the technician....if the compressor is indeed grounded, the compressor alone can be replaced without replacing the whole outdoor unit, let alone the inside air handler too!.
First I would get another opinion from a qualified technician. Try to get a reference from a friend or relative. A grounded out compressor is usually pretty easy to troubleshoot for a qualified tech.
Providing the other 3 or 4 diagnostics were correct, being a grounded out compressor, you may want to have an electrician check the circuitry of the outdoor unit from your fuse box source. If you do get an electrician, have him make sure the outdoor unit is properly grounded.
Also check the warranty on the last compressor you paid for. They usually have a 5 years warranty.

Whirlwind FH-778... | Answered on Jul 16, 2010

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