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You need to start a new thread instead of hijacking and resurrecting a 9 year old thread.

I’m still trying to figure this out…

Since this thread is from 2014 and is 9 years old, I would think he has the chiller fixed by now.

Okay.

Well fella, I said before and I’ll say again… I have never in my life put black tape over the optical eye or jumped it out. And if you search this forum, you’ll probably see that I’ve advised against...

First off, welcome to this group. You didn’t specify what quote you were replying to so generally that would mean the one above yours. I never said I pulled and covered the optical eye and I never...

Can you explain to me how pumping oil out of the oil separator and into the compressor after the oil solenoid valve is going to give you a wet optical eye??? I’ve been a Trane tech for 20 years and...

I don’t think so.

Probably low on refrigerant. Controller is very smart and looks at EXV position and calculated refrigerant flow.

Another one who asked a question and never heard of again.

You need to call a technician familiar with Trane chillers.

My thoughts are you need to start a new thread instead of resurrecting and hijacking a 9 year old thread.

That’s not push pull.
Push pull is when you run hose from lowest part of chiller to liquid port on cylinder, pull off the vapor port of the cylinder, and discharge from the recovery unit to high...

Is it doing this shortly after startup or when it’s been running a long time?

This is a 7 year old thread talking about contractors receiving technical support from the factory. Please start a new thread with your question.

Run fully UNLOADED to return oil to sump. Verify gas pump is operational.

What’s so sad is it appears the hospital was well aware of this in the cooler months along with the rotting cooling towers but decided that their HVAC system isn’t important enough. Now they’re in...

I believe that would cause low oil pressure.

I’m with Healey Nut… did you try adjusting the new oil pressure regulator?

Like others have said, 3 way valve is needed at farthest AHU to keep water flowing in low load situations when all valves are closed. Also keeps cold CHW in lines (like domestic hot water...

Or just put a Trane purge on it and be done with it. I made a portable purge out of a Trane purifier purge that was upgraded to an Earthwise purge during an AdaptiView controls upgrade.

It’s online.

Where do you get the parts info from?

Yes.

-

You have to sign up for it. You put in the serial number and it lists all the parts.

Why not just use webcats?

T-Frame.

It’s all hard.

If they disassemble it, ask them if they’re going to change the oil.

That sure looks like parallel chillers to me…

Welcome to the group! Passwords are info that should not be posted in the open forum. Manufacturers put passwords in for a reason. Everything posted in the open forums become searchable by Google and...

Make sure you change both of them - it’s a matched set. And yes, it’s a SEN00306

^^^^^^^^^^^^^What Graham said^^^^^^^^^^^^^

What he’s trying to tell you is low pressure R-123 o-rings are made out of special material that a hydraulic shop isn’t going to have. R-123 will eat up standard refrigeration o-rings.

Wondering why a 9 year old thread was revived to ask an unrelated question???

Yes.

What kind of chiller? It’s different for different chillers. And why rehash an old thread instead of starting a new one? Just curious.

I think he got snookered.

Measure the evaporator/cond temp on u tube in middle of circuit gives you saturation temp. Then you can figure SH/SC from there. Same way Trane RTAA Or Carrier 30GT chiller controllers measure it.

I know this thread is a couple weeks old and others have chimed in… The way your fan coils are SUPPOSED to work is like this:

Thermostat is supplied with 20# air from building air compressor and...

If what the OP is saying is true, JCI is responsible. But there are 2 sides to every story and we only heard 1. The contractor is the expert, not the customer. The contractor should have used the...

Actual GPM = Square root of (actual PD / design PD) x design GPM

Did anyone check to make sure the EXV is working and not stuck? Did you check pressure drop across the evaporator when this issue is happening? Also, why do you have a “plumber” checking your...

So I’m just curious, you said we need to be careful and issued a warning to us. So what are you saying? If we don’t give you the info you demand your going to have us thrown in jail or sue us???...

They had a run of 1U1 modules that lost their memory back in the day. Can’t remember the vintage but I think around 2008. You need to replace the 1U1 module and enter all the settings manually. No...

How about you show a pic of the bottle, specifically showing the valve, not the box…

No ladders or racks on my truck. I believe the new trucks come with ladder racks but they’re removed before the vans are issued to chiller techs. Many central plants are located in parking garages...

You need to hire a commercial company that works on chillers. A lot of commercial companies don’t know anything about chillers. And yes, they’re going to be more expensive than what would like…...

No, you don’t have to replace the air handler.