Question about Whirlwind FH-778 Air Conditioner

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Who to added R22 freon to my a/c condenser unit and what hose on my gages need to be connected to hight pressure and lowe pressure

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The red hose connects to smaller line...usually 3/8's....the blue connects to larger that has black insulation. The yellow to tank of freon. The unit must be running to put in blue hose. If unit nit running put in red hose. Must be done by someone with EPA 68 license

Posted on May 10, 2010


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R22 need diagnosis please

It could mean you are overcharged and that somone tried to resolve the real problem by adding refrigerant (R22).

Dec 11, 2013 | Heating & Cooling

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Bad condenser unit GOODMAN

it is a 3 ton condensor you still can buy r22 freon condensors new but they have nitrogen charge and its expensive to charge I recommend to go with 3 ton goodman condensor which is new 410a puron and also change indoor coil and flush the line set so you dont endure the high cost of new copper lines these new systems come with 10 years warranty and the r22 systems come with only five years

Feb 26, 2013 | Heating & Cooling

1 Answer

How can I add R22 to an outside A/C unit

If you have a set of gages all you have to do is hook up to the ports. Blue gage / line to the large tube. Red gage / line to the small tube. Hook up ports are usually right at the bottom of the unit where the tubes connect to the unit. On some, the ports are inside the unit in which case you have to remove the access panel in that location. First, clean the outside coil, you can use a water hose with not to much pressure and wash out any leaves, dirt, old grass clippings. Wash out the coil fins and pay attn. to the bottom area. The best way, to make sure your unit is full of freon, is to check the temp of the large line at the unit (while it is running w/ max load across inside coil) and check the saturated refrigerant pressure, looking for a differential of 15 to 20 dges. OR With a clean coil, running with about 225 psi on the red gage, you will want about 65 to 70 psi on the blue. These numbers are just for referencing only.You really need to check the temp. of the suction line and using a saturated R22 pressure to temp. chart. (found at any local refrigerant supply house) adjust pressures and temps until a desired temp. is achieved (15 - 20 ) called super heat at the compressor suction line. Hope this helps Fix Ya up.

Jun 01, 2011 | Whirlwind FH-778 Air Conditioner

2 Answers

Hello, my HVAC is constantly freezing, even after freon is added. I was told that I have a leak in the coils and need to chance the air handler - the outside unit is about 10 years old - air handler about...

No you can not use a R-410 air handler with a R-22 condenser unit...the exspansion devices are different as the properties of the refrigerants are enough different that they are not interchangable...
Really your only choice is to replace the whole unit as it sounds like the exspansion valve or the orfice is partially clogged and it makes you constantly freeze up....
There are some things you could do to make it work at reduced capacity but it is way beyond what I could tell you through a computer...


Sep 08, 2010 | Goodman CKL42AR42 Air Conditioner

1 Answer

The intake side, evap or condenser coil, (not sure which) ices up, not allowing airflow. best fix?

After the ice melts and you turn on the unit and your fans work the problem is your unit is low on freon normally R22 you will need to have someone who is licensed to fill it and ck for leaks. If your fan does not run replace fan first if fan runs but low air flow thru condenser or evap coil clean coil first. good luck i believe your unit is low on freon more than likely.

Aug 11, 2010 | Dometic Rooftop RV Air Conditioner

1 Answer

Who to added R22 freon to my a/c condenser unit and what hose on my gages need to be connected to hight pressure and lowe pressure

why would you need to add refrigerant ?
If you need to ask which hose goes where,you are not qualified.

Apr 06, 2010 | Whirlwind FH-778 Air Conditioner

1 Answer

How do i add freon to my 4 ton bryant r22 condenser

You connect your blue hose to the low side (fat cool copper) The smaller lines is high side (hot side). Your yellow hose will connect to the jug.You want 70 PSI on the low side (no more 68.5psi is ideal) Your coils needs to be reasonably clean. If the compressor seems a bit loud you could clamp on an ammeter and check the amp draw. In fact you could charge the unit using an ammeter. Check the plate for total amp draw and reach for it. More sophisticated methods for checking sub-cooling and superheat are explained HERE
A cool from Professor Zarkalicousness:

Mar 27, 2010 | Whirlwind FH-778 Air Conditioner

2 Answers

For my thesis: 5 condenser problems and 5 solutions

Problem number one.

condenser fan won't come on. solution check the capacitor if good ohm out the fan to see if it is bad. If bad replace fan motor with new one.

2. compressor will not come on. solution check the contactor to see if engaging this applies to problem 1 also. If engages check the capacitor on the herm side if it is bad replace. If good check compressor to see if the compressor is bad. Should it be bad replace compressor.

3. High head pressure not cooling properly dirty condenser coils. Clean coils. With hose and water.

4. Low head pressure frosting accruing on suction line. Check freon levels. Also check inside air filter for being dirty.

5. Condenser unit is failing to come on. solution check the power source check the contactor should the main power be bad check main breaker and replace any slow blow fuses that are bad. Should the contactor be bad check transformer to ensure 24 volts going to secondary side on contactor. Inspect the two wire going to outside unit condenser. replace any broken wire any bad transformer or bad contactor.

Feb 21, 2010 | Carrier 38CKC042 Air Conditioner

1 Answer


No, R12 and R22 are not compatible freons. You need to recharge with R22.

Jun 30, 2009 | Whirlwind FH-778 Air Conditioner

1 Answer

How long does it take to put a little R22 Freon in an Amana Central air unit

The manufacturers want you to let the system run for 10 to 15 minutes for the system to stabilize before adding freon. Then after adding it needs to balance out to check either superheat or the subcooling. Depends upon the metering device of the evaporator coil.

Jun 11, 2008 | Amana Heating & Cooling

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