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Out in full Sun as well as the box is

Figured at 110degrees by the sales rep

Ok Thank you

So using the data how do I calculate the line size??

How does this relate back to suction line size?

Elevation 1000ft

Less than 10’ run on piping. Temp usually set around -5

CFO9K6E-TF5-245 -21 degrees 7500 btu application capacity on the evaporator. Freezer usually runs about -5 degrees

404A

My mistype it is 2.5hp

Condenser has 2.5 ton comp. I will have to to look at the cut sheet for the evaporator tomorrow.

Looking for a “best practice “ answer. New condenser and evaporator for a small low temp box. Liquid line is 1/2” on both. Suction is 7/8” at the condenser and 5/8” at the evaporator. Better to run...

Sorry for the delay in getting back here . It as some stated was simply low on gas. I knew the site glass was flashing but assumed it was because the TXV was wide open. After a few minutes of checks...

I will get that a little later. Fortunately this box is empty and I just shut it down . I work for a school district and have a few alligators nipping at my butt this morning.Hope to get back to it...

I have a walk in freezer with a Trenton condenser and evaporator. The unit is running but it seems the TXV is wide open and it is flowing warm liquid into the evaporator I am baffled by this. It...

This is the first thing I did and even replaced points in in 3. No change. I have amp probed all 3 legs on both A&B sides simultaneously and have never seen a significant enough imbalance to cause...

Another question I have is there a way to circumvent the CT’s and fool the CPM. I know the risk and if I did that I would install a phase monitor on a control circuit. Flame away if you must but I...

We had the main board replaced (not the CPM’s) 2 years ago. I would assume those got the latest software install. We are headed the route of replacing the CT’s and the CPM’s. The retro is 1 new CPM...

My manual does not give me squat for info on the out put of these CT’s. I talked to my service guy (Carrier Service) and does not know and has yet to get that info from Carrier Tech support. He was...

I will have to dig deeper in the manual I have. The fault is 1.35 loss of phase. There is no loss of phase and current draw on all phases is well within the normal parameters.

See my reply below. Thanks for your input and help

My dilemma is I don’t know what the signal is supposed to be. I have poked around and can’t find any consistent signal that makes sense. I have reached out to my Carrier guy to see if I can get that...

Admittedly out of my wheelhouse a bit but only because I have not learned yet. This chiller has an A&B side. The A side faults out on a phase fault every reset. The B side will run for a day or so...

Thank your your feed back

Similar run?? What type of hood did you tie it into? Thanks Is it quiet?

This is a bit out of the norm on what I deal with on a daily basis so I thought I would reach out for some advice/opinions. When I'm not keeping my schools warm/cool I love to cook! Stove is a...

I have 2 Lennox rooftops that each have 4 compressors. Neither of these have any motor protection controls. No LP or HP cut outs anywhere. Apparently these were”options” on these units. Consequently...

This what I thought . New valve should be here today or tomorrow. Thanks for the help

The way these FHP units are set up as long as the thermostat or controller are set to cool the RV coil is energized. Whether the set point is satisfied or not. So it never de- energizes just creeps...

I hope so I have them stuck before and bleed over but have never seen one "creep" like this over time.

Valves are gone, no load on the motor would be my bet.

I have aW2W Florida Heat Pump. It is a 30 ton 2 stage unit. It will run fine for awhile sometimes a couple of days then it will be as if one stage has lost its “ cool” signal and go into heat mode....

PSIO was able to be reloaded. New battery and install and the unit is up. Thanks for the help

Initially the load is somewhat greater as the box is loaded and everything comes down to temp. once loaded and down to temp is the load not less coming off defrost due to all the frozen product? ...

I got the same info from my service guy. It is the PSIO machine and it is our hope it can be reprogrammed from Carrier. My understanding the upgrade is big$$$ and this particular school is inline for...

Thanks that is helpful info. To the best of my knowledge the Danfoss in the Trenton Evaporator is OE.I get the advantage of the CPR but in my case the difference of a few minutes to pull down to temp...

I am not being argumentative I am just trying to learn a little. If I change the TXV to one with an MOP of say 40psi and it keeps my compressor out of overload until it pulls the temp/suction psi...

Had the service company out to day that I use when I can't figure it out. It is an issue with bad batteries and comm devices that lost their program. They are at Carrier to get new batteries and...

I understand the reasoning behind the CPR and that may be the route I go but wouldn't a a lower mop txv accomplish the same thing?

I think the TXV would be easier to change, from a piping perspective at least with the Sporlan one I looked at, but that's just my perspective. Not sure, but I might be able to just change the...

I have been working on a low temp box and in the process saw that when it comes off of defrost the suction pressure is high enough ( over 50 Psi on a unit using 404A) that it overloads the compressor...

Thanks. I will look into that tommorow

Admittedly I am a bit above above my pay grade. I work for a school district and generally I can restart this chiller when needed but not today. I will probably end up calling in an out side company...

I thought about that. The drain is not trapped and terminates to the outside. In addition to the kill switch I think I will add a trap. As far as the horn goes that would be a no go. This is in a...

So by doing that then the fans imediatly shut down and then the condenser will pump down and shut off. Correct? I think I will try this and see if it helps.

Also did not put in my first post that the the evapotator drain is clear and drains during defrost.

Shutting off the disconnect. I have talked with them about this and they won’t stop doing it. I have talked with them about shutting it down at the thermostat but that seems to be too hard for them...

I have a walk-in low -temp freezer (10'x12'x 8') that is forming ice on the ceiling and I can't quite figure out why. Defrost cycle seems to be be working fine as well as the fan delay after the...

That makes sense I will look at that today. Still thinking I will add the boost transformer to bring the FLA amperage down a bit. At temp I am running about 17amps. With a full load ,hot box, I was...

I agree with that and I think I am going to put a boost transformer on to kik the voltage to 230v. I am curious to see what that will do . Should lower the amperage somewhat. But still does not...