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You refer to a defrost termination klixon. Is this what the schematic calls it or you? In most self containers I work on, there is a klixon that shuts the fans off if the coil is above X degrees....

1 - Why does the return fan shut off when the supply fan stops?
2 - What is your accelerate and decelerate parameter set to?

Is there an oil equalizing line between the two? Is it plugged?

Are they your subs or the buildings?

I have been taught that in most commercial HVAC applications there is no real need to have a derivative value in the control loop. It seems that that PID is the problem. If you can find these values...

Is there a freeze stat on the unit? I have had a few Tranes act this way.

Lol. That's a good one.

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Really. The site rules only tell the OP to ignore any responses that do not have a * next to the title. Get off your high horse.
I was not giving advice, simply answering a question, and explaining...

Southern Mechanism it's the damn auto correct on the phone.

NEVER put CO2 into a refrigeration system. It can cause unexpected EXPLOSIVE consequences. A suction filter is used to catch any crap before it goes into the compressor. It is used usually on initial...

The 036 denotes the btu's in thousands. There are 12,000 btu's in one ton. Therefore your unit is 3pre tons

Do you know what the PID parameters are?

Do you have a complete model number. There are a few versions of the Y.P.A.L? Does it have a BFD or any other accessories?

You should check out a mechanics lien for Florida

Check into the landlord/ tenant laws in Florida. I know in California, that the renter can deduct that from his rent. Hence you get paid by the renter and the landlord and tenant can argue over what...

Can you run it in service test?

Is there any thing else in the unit that will cause an 'externalanswer stop' I.e. duct detector or occupancy switch.

They all need to be the same length so they all have the same pressure drop through them, so you get uniform flow through the coil.

I like to spray coil cleaner on and then run he fan to pull as much cleaner into the coil as possible.

What refrigerant?

Do you have the m.n. of the cooling coil?

Yeah. I like working on Trans units. They are usually pretty easy. I hate Yorks, no field experience by anyone in the factory, the electrical panel is way to small.

It reconfigures the L.T.B for conventional thermostats. The pain in the neck is to see if your unit is pre 93 or after 93. They change where the wires land on the LTB

If you have the UPC board with the #'s and the letters. Yes you can switch to a conventional stat. If you have the UPC board with no connections on it, then you would need the C.T.I board....

Is the house occupied the entire day? Is there any reason to run the unit when your not home? If the answer is no, then you can have someone install a programmable thermostat that can be programmed...

My company is safe to the extreme. We have been told by management that we need to do what you are describing. The techs still have not received an answer on what to do. There is no really good...

Good luck!

I think the difference is that in the canned air it is considered a deminimus vent, seeing as how it is only a few ounces. If you were to vent from a refrigeration system, that would not be...

Have you tried taking Benadryl. If it is an allergic reaction the anti histamine should help with the itching. If it does work, then you know you a probably allergic to something. If it doesn't,...

http://www.epa.gov/ozone/title6/608/technicians/lostcard.html

http://www.epa.gov/ozone/title6/608/technicians/lostcard.html

Here is the URL.

http://www.epa.gov/ozone/title6/608/technicians/lostcard.html

Here is the url.

Easiest way to find a restriction in the eval is to kill the I.F.M. and run the compressor. If the eval is restricted you wont get uniform icing on the distributors