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cemonds- Check the wiring, I am sure you mentioned that this is single phase, correct. Is the compressor noisy ? It could be running reverse rotation. If the start and common leads to the compressor...

Brand new driers, the process chiller has a brand new TXV. The 30GTN100 is using the Carrier electronic valve

Has anybody had any issues when converting an R-22 chiller to MO-99.
Is the TXV compatible with the new charge.
I completed a 30GTN100, Evaporator pressure out of the EXV freezes to the evaporator...

I've heard several different options here. I agree that the IFR would be the best. But, dollar for dollar the McDonald / Miller would be the best option. As far as condensation is concerned you can...

Okay will go with that. More in pro section

Yes, thanks did that with the unbinding and changing the module the module ftom circuit #1 did bind. Unfortunately you can't get the module. So I guess I doing the superseded EXV change out. Any...

Thanks to both of you for all your help. I have found the green LED and it will light when I put all LED on. It will also light when I attempt to bind it and run my magnet by it. But it does not stay...

Thank you sir That is what I needed to see. We have rain right now so I won't be back there til next week. But at least now I know what I am looking for. When I pulled the vomm cable apart it looked...

can you send me your email I don't know how to do pictures, still old schoolEmail address removed.

Unfortunately nothing lights up on this valve or the working valve. I put all LED's on and the sensors all lit up, but the valves and/ or connectors did not light up. The other EXV is working, but...

Thanks for your reply, this is not the flat clear cable that had the 4 wires inside and those crimp clamps. I lifted the epoxies electronic module and it does not look healthy. Where on this module...

I am working in a Trane CGAM110F. s/n U11H24480, I have an alarm that says exv #2 is not communicating. Went on TechView binding report and got the red face. Tried to bind it, but not getting the...

Joemach- Talk to them this morning said the speaker might be the issue. She told me to just try using it with a set of headphones plugged in. I did that and it worked. Thanks for the lead

All I'm asking is why is this occurring ? The last time I used this leak detector, it was indoors an dry. The leak detector did it's normal warm- up and was ready to go. The beeping was there and...

You guys have mo idea what you are looking at; that is a sub-cooling modulation valve sensing bulb, so it has to be on the liquid line.

Good afternoon- I have an Inficon D-tek Select leak detector that the beeping sound has stopped working. The alarm light is completely functional, just mo sound.
Any response would be appreciated -...

Good afternoon, hope everybody is staying safe out there.
I have a 10 ton Copeland scroll compressor and Copeland VFD mounted in a Thermalcare process water chiller.
The VFD has voltage on all 3...

Good afternoon, hope all is well with every body during this time .
I am working on a Carrier 30GTN060'KA 600 and It kept going off on compressor fault T-051 and T-055 compressor A1 and B1 only 2...

Good morning gents and ladies, I hope everyone had a great Thanksgiving and said a Prayer for all our hero’s that could not be home with their family to celebrate.
Has anyone been involved with...

Good afternoon to all ! I am working on several Carrier RTU's. They all have rusted power caps that have either lost their charge or are in the process of losing it. Did the omd stand by sensing bulb...

All you actually have to do is open the doors where the dampers are. If there is no ductwork going down to the space it is 100% outside air. Also remember these systems reheat for humidity control. ...

I am trying to find service information on a Trane mini-split m/n 4TYK1624A10NOAA, s/n 170500919X. Would anybody out there have a service book for this unit ? Thank you in advance. - GEO

coolerinfredrick- not concerned about warranty parts. I have a 70 ton Annexair unit that the entire gas heating section is rusted away and needs to be replaced completely. I have managed to get the...

Bald Looney, yep that"s them, today I found out that they are out of Canada and they use Heatco gas burners. Unfortunately Annexair won't quote on burners or parts with out the burner serial number...

Good evening, I am trying to locate an area rep for Annexair roof top units. This is a roof top mounted air handler with a Carrier condensing unit attached. However when I look it up it gives me a...

VTP-99 Thanks, I will do that !

core_d - complete loss of program and won't display indoor temperature, no indoor air sensor. Only existing one inside stat. -GEO

Greetings one and all, hope y'all are having a Great Thanksgiving. Now for my question; I have a Lennox commercial thermostat m/n 14W81. also has the number TB8220U1011, seen as to be a iom version...

I have 32 brand new Lennox commercial RTU's especially made for this client. These have the Prodigy 1 controller. Some of these units were set up at the factory to monitor CO2 levels in the store...

BALloyd - I thank you sir, for all that wealth of information, including what I had asked for that York could not under stand ! GEO

York "Simplicity" RTU Controller - I have several new York Roof top units that utilize the "Simplicity" controller. My question is not about this control, but an add on to it. This is a York...

rundawg-- Thank you sir, very helpful indeed. I very much appreciate your comeback. -GEO

Good morning - I am trying to figure out what is going on with this Carrier RTU m/n 50PG-C28-CL50-AG, s/n 3406G40024. This unit has 3 scroll compressor circuit A has 2 in tandem and circuit B has 1...

Sometimes you could have 3 contactors, input to the drive output from the drive and a mechanically interlock bypass contactor that won't pull in if the VFD out contactor is closed. You will find...

hvac69 - Thanks for clearing that up, as this is exactly what it is 2 Addison units doing 100% outdoor air and 30+ RTU's with a minimum of 10% fresh air and one Munters hear recovery/ dehumidify.

No, all the RTU's do recirculate return air with a minimum of 10% outside air. There are 2- 30 ton Addison outdoor simair units that do no recirculation. They attempt to pull the moisture from 100%...

This is a retail store, as built. It has all those RTU's as this is a high square footage with RTU's sized from 5 to 25 ton cooling capacity, most smaller. I went through the manufactures IOM and it...

In the Galveston area I have a commercial application of a building dehumidifaction system that uses 100% outdoor air and no recirculation at all. There are about 25 RTU's with a 10% make up outside...

Sanchez - First off,you blind sided the original post. You should have started a brand new post. You have more non-condensibles then the purge can cycle on. If it is only getting non-condensibles to...

Wsllyeimpme - It appears that you already know the answer, so why are you asking further questions ? - GEO

Wallywimple - if you still have the heads removed from the compressor body, let the compressor run for a few seconds. Keep yourself out the way should it throw a rod. If the vibration is still there...

acjourmeymam - Good post but you forgot the click at the end of the Hmmmmmmmm.

Your going to have to contact the vender directly to obtain your information.

Jayguy - I agree that a purge would work great, however I have used chilled water to condense the vapor and it gelps seperating it out. I hear my relief valve belch several times. After warming up to...

An outdoor unit is always susceptible moisture, especially when you have rapid changes in the ambient conditions. Check that all the electrical cabinets close tightly. I had a Trane CVAA blow the...

I like to run chiller water through the recovery system, gives a vapor pull down. I like to go over EPA guidelines to 29" hg. No micron is necessary at this point. I have several school district...

Wylbek - slight correction the oil pump starting relay is a current, not a potential relay. Picks up the start winding via the locked rotor current of the pump motor, then drops the winding out of...

My life depends on my meter. I have seen too many people getting zapped. I have used Fluke for the past 30 years and they haven't failed me yet. Ad far as DC current measurement hoes the Fluke...

Looks good if you want to take a shower with it or drop kick it through the goal post of life. The supply houses have little if any information on this machine. Big question of course is how much...

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