Need HVAC help asap plzzzzzzzzzzz

[Hydropimp]

Am in a apt my central air is blowing air but not cold air.

I put my hand on the gas pipe and it is not cold.

I think it can be two of things

1 I need more gas in the unit.

2 the compressor went out.

The unit is old. When I moved in the apt I had a havac company come out and clean the blower because it had alot of dust on the blower.

The a/c is the type of model that the blower is under the radiator. So the coils are clean. I saw it with my own eyes.

On moday I will go up to the roof and see if it is the compressor works.

Any other idea's on what can make a unit not blow cold air?

Thanks guys

 

[RedRain]

lots of reasons

under charged, over charged, condensor fan failure, clogged condensor coil, compressor failure.

also if it is winter where you are, your AC unit is probably not equipped to be running in the cold. let me know!!

 

[Hydropimp]

Red thanks for the response.

I read on line last night that Rheem a/c have reset switches in the outside unit. The only thing is I can't get to the roof top where the outside unit is at till tomorrow.


also if it is winter where you are, your AC unit is probably not equipped to be running in the cold. let me know!!

I had the a/c off during the cold days.

 

[stussy22]

like redrain said. Could be a bunch of problems. Hoping for something simple like the fuses blew. Compressor went out and the unit is old would look into getting a knew out door unit. Only thing about that is that the are only making 410A system now. And with an indoor section being as old as it is it would need to be replaced. Praying its something simple. Sounds like rain knows what he is doing. I'm in the trade as well so drop me a line if you need an extra hand.

 

[RedRain]

r22 is being banned in 2015, but you can retrofit by changing to POE oil.

if a 24v safety has been triggered there is a problem,either high head pressure which can be caused by condenser fan failure, or clogged condesner coil. or a low charge, which means u have a leak somewhere.

checkout on the roof and report back to us.

its better to have another person there, so u can be on the roof and have someone else trigger the stat for cooling.

 

[Hydropimp]

Yeah my girl will be in the inside while am on the roof.

Hope I don't have to change shit not my place. Really just want to get all my plants flowered and am gone.

My chick needs to get a job so we can move. Fucked up shit I would have been out of there by now but her boss was doing fraud in the real estate biz and got popped. So she is out of a job. She is still waiting on interviews for the new year. So as soon as she gets a new place of employment we are out.

Thanks for the time Stussy and Red.

Wish I had someone to work with that has a hvac company to learn the trade. I got my electrical on lock. Also I have a 5 ton central and 3 ton mini in a shed.

I am well round in this game where I lack is in the hvac department. I had a vacuum pump and gauges, but all of that got stolen from my previous house.
And all of my equipment tooo.

Fuck it they can't stop me.

But like rain stated in another post water cooled a/c is the way to go.

And the shit that sucks is that am ready to flower but can't lite my 1k with no a/c.

 

[stussy22]

r22 is going to be ban in 2015 but the major manufactures stop manufacturing equipment for R22 last year.

I have seen that system clean out you use on the line set for changing a 22 system to 410. I am a bit leery of using that stuff sure it might work. But what if something gets left behind. Idk I rather play it safe and run a new line set.

But sounds like you need to just finish this flower and get the hell out.

Maybe look into a portable or move in cool unit. I mean being able to kick on that other 1000 watter is 2x as much light. Which means more 2x as much goodies. Would be well worth it. Let us know how it goes.

 

[Hydropimp]

Stussy tell me about it. When I fire that 1kw it gets hot as hellllllllll.

I have a 26w cfl that is = 100wtts and a dehumidifier 70pint and the temp is 84-88.

Got to keep the humidity low.

My setup is crazy because am in a loft so I enclose the tent in a 8x8 box made of reflective and 1x2 I think. So I could use the air vent from down stairs.

Damn wheres the cold when you need it?

Last week I wanted the cold to go away and know I need it.

 

[Hydropimp]

The condensor coils are dirty is there any product I can spray on the coils to get all of that shit off of it?

 

[Midnight]

like redrain said. Could be a bunch of problems. Hoping for something simple like the fuses blew. Compressor went out and the unit is old would look into getting a knew out door unit. Only thing about that is that the are only making 410A system now. And with an indoor section being as old as it is it would need to be replaced. Praying its something simple. Sounds like rain knows what he is doing. I'm in the trade as well so drop me a line if you need an extra hand.

Due to our fabulous governments ineptitude, dry shipped R22 units will be back on the market sometime in the first quarter of 2011.

 

[RedRain]

The condensor coils are dirty is there any product I can spray on the coils to get all of that shit off of it?

if you are in the US there are many things that u can use

call and HVAC company and ask for a bottle of condensor coil cleaner. I like the harsh ones that foam alot. I use the Alka Brite Max Foaming,but I am in Canada.

The US has superior products, and due to our tighter regulations and EPA rules we are not allowed to use the "good" ones.

You will need a pump sprayer and read the directions. Make sure to wear tight fitting safety goggles, and a mask and gloves, and long sleeve shirts. If the chemical gets on your skin it can and will burn and eat little pits of your flesh. You simply spray the coils with the chemical, wait 10 min. and hose it off with water. I just use a hose with no nozzle as to not damage or bend any coils. I also like to apply the chemical on both sides of the coil, but i wash with water from the inside out. Make sure to blow power to the unit before u start hosing it down.

 

[Hydropimp]

Red that is the one I bought the foam scrubbed the coils clean.

That still didn't work. So i jumped on the roof top with some tools and a drill. I removed the fan from the unit. I put it upside down and turn on the a/c the compressor did not get hot.

So we called the landlord and she said her father will come out and take a look at it. I spoke to the man over the phone he is suppose to be a handy man hope he has a vacuum pump and some brazing experience. OH and some gas handy I think he is going to need to change the compressor.

? red what kind of gas propane or map kind of gas can I use to braze copper pipping?

I know I can't use propane the blue container that they sell at homedepot. I tried this once and failed at brazing.

 

[Hydropimp]

Oh the fun part of it is I live in a loft and I have to take down my reflective 8x8 box I made for the tent and stick 5 - 3 foot mommas and about 11 1.5-2foot plants in the half bathroom down stairs with the vortex and filter in a small space not to mention my clone tray.

Drop my 4x4 tent and the 2x4 as well.

But he makes it seem for what I told him it was the compressor and all he wants to do is go up on the roof.

I still am going to drop everything till all the work is done then set up and flower.

If you need work help out in BC let me know. I just have to take a long flight.

 

[RedRain]

hey hydro

check the capacitor to see what nF it is reading at. see how many amps the compressor is trying to draw. lastly check the ohms of each contact on the compressor to determine the fault. Broken winding etc.

you use acetylene when brazing and a special solder called silfoss, you cant use normal solder because it will contaminate the interior of the copper line sets.

make sure the tech uses nitrogen to purge the copper while brazing to prevent carbon build up inside the lines.

make sure they check the capacitor before you change the compressor.

you guys should really have a tech to charge the system and install the compressor.

you need a recovery pump and a recovery tank to recover and store the refrigerant that is currently in the system.

you have to purge the lines with nitrogen to prevent carbon buildup while brazing. If the tech refuses, kick his dumb ass for refusing to spend 10 bucks and thats usig more than 1/3rd of a tank to keep your lines clean. Most techs, companies are lazy, cheap and wont dump nitrogen into the lines while brazing. Pump the unit with nitrogen to pressure test the welds. Also do a acidity check of the refrigerant to see if you can reuse it, also make sure the tech installs a liquid line drier, a sporlan "HH" is a super waxy drier/filter that is excellent for after a burnout. You install one on the liquid line. I would test @ 200 psi. You can now spray your welds with a soapy solution to see if any air bubbles form. After waiting about 30 min check to ensure there is no pressure loss. Allow the nitrogen to escape, before attaching vaccuum pump and vaccuum guage. Vaccuum down system to 400-500 microns. No lower than 300microns because you start drawing oil from the compressor. Ensure that your system holds the vac for at least 15-30 min. You can now charge the system with the correct weight of refrigerant. Then you run the system and top off system to optimal performance.

he will also need access to your indoor unit to ensure that your unit is running properly.

 

[stussy22]

^ What he said to the tee

Red if you ever want to move down to Southern California for some reason. I work for my family in the HVAC trade and I can easily get you a job with how you described that compressor change out. Glad to see their are other techs that care about the trade.

 

[RedRain]

hey stussy,

thanks...i am trying to pass on my knowledge to the cannabis community

hahaha I am pretty happy in BC, but I'll let ya know if I ever find myself wandering around Southern Cali.

 

[Hydropimp]

So I tore everything down except one sun hut with all the ladies.

The association is walking around the building so the maintance guy would not let the landlord go up to the roof.

But the maintance guy said do it tomorrow.

Red that is some serious knowlegde you just dropped on me hope the owners tech does all of that. My girl just got a call for an interview today so that's good.

 

[RedRain]

Hey Hydropimp,

no worries.

let us know how it turns out!!

 

[Hydropimp]

Red and stussy

Thanks for all the replies.

The old man came yesterday with a new capacitor in hand thinking that was it but it wasn't the problem. But I have a new cap that will last my flower period.

The unit need more r22 so he forgot to bring it. So he went home and got is guages and tank. He didn't have a scale he just filled the way he knew how. He also told me it might need more gas in two days maybe. Tomorrow will be the second day the unit will be running and it running fine. I went up with to help him out. Then he wanted to come in and feel the breeze so I was like ok. Had my girl cooking bake to mask any smell just in case with some music playing and all the girls in the half bathroom next to the front door.
Fan running and everything he was in and he was out.

What a relief man I love tents.

All I need is a cam for pic. Now it time to get back on schedule.

 

[RedRain]

hey hydro,

Capacitors are a common failure.

Your unit will never achieve 100% efficiency with a leak in your system.

Units just dont loose gas.

First your unit is leaking r22 which is harmful to the ozone. Your unit should never need gas, unless you extend a line, or develop a leak. Your landlord has to find the leak, seal it, remove any moisture from your system, install line drier.

The old fill and run is a joke and a waste of money, refrigerant, and a strain on the environment and your equipment.

You dont need a scale to top off the unit. You can charge the unit based on super heat and super cool readings, with your guage manifold and the temperatures.

You are just gonna continue to have issues. Tell him to fix the leak,so you have reliable cooling. You may only need a top up once every 5-6 months, but it will put a major strain on your system. The oil for your compressor is carried with your R22, so you can starve your compressor of oil if you get too low. Maybe your system has 24v safety features to prevent start up, which is a good thing to save your compressor from failure. As a safety feature for your grow, and to have your appliance that you deserve to have working, working...get him to come back and do it right!