A/C working properly? Cost -> lower temp?

[<kjpro]

Yeah, like it&#39;s so confusing.

[Noon-Air]

Ummm...... nobody has asked if there has been a new thermostat installed recently.... like in the last 2 months.

[Tony]

Carie? #1 I have posted before from what I read in posting? If you apartment Is 1500 Sq. feet, tomb rule "you need 3 ton".

#2 If you AC unit is drawing only around 15 amps at full load your unit is only 1,1/2 ton "not big enough".

#3 If you unit is freezing out side as some one posted? you have heat pump and it is working in reveres.

#4 If you unit is heat pump and it has booster heaters for winter see that are not ON at same time while is cooling.

#5 If your unit have high back pressure and low discharge pressure it is good possibility that compressor is going bad.

#6 If unit is heat pump you definitely need to check operating pressures looking at unit would not help.

#7 If it is heat pump mechanic must check switching or diverting solenoid&#39;s which make change from winter to summer condition.

#8 Last but not least source power and that compressor is running continuously and not shutting down intermittently

I believe you have stated that at one time was working ok Then check # 3,4,5,6,7&8 Tony

[Noon-Air]

You really need to get some training and/or experience before you go spouting off a bunch of BS

There is no such thing as "rule of thumb". 1500 sqft could *NEED* as little as 1 1/2 ton, or as much as 4 ton(or more). Unless you do the calculations, your doing nothing but guessing.

Ummmm......no. I have a customer with a 4 ton heat pump compressor that only draws 13.1 amps(measured), and less than 15 amps total(measured).

Guess again..... overcharge on a piston system will do the same thing.

Not a normal scenerio unless a new thermostat was installed by somebody that doesn&#39;t have a clue, or a sequencer went bad

Not necessarily, there could be a lot of other issues that will exhibit simular symptoms

Same as *ANY* other heating/cooling system. If you don&#39;t take quantitative measurements, your only guessing.

Not applicable with this problem

That would cause all kinds of other problems.

[kool]

What is a "fundie" idjit, or am I one for asking.? Somebody said there is "no such thing as a stupid question." (

[<kjpro]

Oh my... you did it again. Since you&#39;re a refrigeration tech, why don&#39;t you keep your mouth shut when it comes to residential air conditioning systems??

Replies follow...

She has a 800 sq ft apartment. I know it&#39;s hard for you to know this as it&#39;s in her FIRST post!! She also has a Goodman 2 ton unit, as this is in her SECOND post!!

Then how can Goodman get by with the following information for a 2-ton unit??

"Compressor RLA 11.5"

Nothing has been said about the unit freezing. Nothing has been said about a heat pump. Even though, by the model number it is a heat pump. But the fact remains that it doesn&#39;t even have to bee a heat pump for freezing conditions to show up!!

Wow, now there&#39;s an original thought. Why don&#39;t you check the model number? It is a heat pump!

Have you saw anything posted on the operating pressures??

Once again, model number says it&#39;s a HP! But even if it wasn&#39;t a HP, we would still need the operating pressures and temperatures!!

Once again, it&#39;s a HP.

Brillant, just brillant!!

I believe that you need training in the HVAC field, if you want to actually post helpful information!

[<kjpro]

???

[carie_r]

I was just reading about thermostats... It&#39;s the same one that been there for a least 1.5 years. It&#39;s a Totaline P474-0100. I changed the cycles per hour to 4 yesterday (it was 6; can be 2-6, "no limit," or "disable 5 minute compressor lockout"). I read that if the cycles were set to low the unit would simply not run enough to be able to cool the house. (And may not control the humidity as well.) The thinking was, in the mean time I&#39;ll live with it hot for part of the day, and then when it&#39;s cooler and 4 cycles will take it down to 78 then it will shut off because that&#39;s the temp setting. BUT, it appears the Goodman could care less what the thermostat says about cycles per hour. It ran for 2 straight hours. The fan is on Auto. I also noticed the instructions say not to install it near a register or the return. It&#39;s about 7&#39;2" from the return, (at the same height, facing it from another (parallel) wall, not directly across - about 6&#39;6" feet over; the walls are 3 feet apart; the wall with the thermostat ends (turns away 90 deg) after 1&#39;6" towards the return. R

--------------------------------------------------- T

------------- | | Living Room |

I started taking temp readings, as suggested. In the Living Room the temperature out of the register is consistently 15 degrees less than what the thermostat says (and I set the thermometer on top the thermostat to make sure they read the same...). In one bedroom (with the door shut) the temperature will be 71 degrees if the register is not shut (it&#39;s not), while the temp in the living room is 78 (the other side of the door).

The repair guy, who I thought didn&#39;t do anything in those 2 minutes, might have actually done something, as at least the apt is cooler than

83 now. But the A/C is running practically non-stop.

I also noticed than when I shut the vent in the (71 deg, above) bedroom it&#39;s not making the noise it used to - some air used to get through anyway. Not anymore - the air is not blowing nearly as hard as it used to. Which registers are open and which doors are shut is the same.

[carie_r]

Maybe I should add that 15 minutes after the A/C shuts off (or less?) the bedroom (above) and Living room are at the same temperature - 78. Surprised me a bit...

[carie_r]

Correction - the bedroom was still a couple degrees cooler...

[carie_r]

Correction - the bedroom was still a couple degrees cooler...

[<kjpro]

Are you sure he didn&#39;t mess with the blower speed?

[carie_r]

I don&#39;t know. He wouldn&#39;t talk, and left very nervously when I asked him for his contractors license #, as I previously described.

[carie_r]

I don&#39;t know how long the pressure out of the vents has been like that, the noise I was referring to was from a few months ago. I don&#39;t know if he changed it.

[carie_r]

I don&#39;t know how long the pressure out of the vents has been like that, the noise I was referring to was from a few months ago. I don&#39;t know if he changed it.

[Noon-Air]

A piston system with a gross overcharge will freeze from the compressor back to the evap, whereas if its running real low on refrigerant, or there is no airflow, it will freeze from the evap to the compressor. It doesn&#39;t matter if its A/C or a heat pump, it works the same.

[Tony]

You absolutely right with one difference that some people can do more in half the hour then some in half month and some people have college degree only to qualify to clean toilet Tony

[Tony]

Condenser freezing because of overcharge that would be some a MAGICAL system. So I tout I seen everything I guess not. Tony

[Tony]

KJPRO the only qualification you have kiddy garden and that would be to advance for you I am suggesting more like day care. son grow up. Tony

[Tony]

Kjpro is going to fix it for you he only posted what I did 7/8 @ 4:14pm Tony