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This was something that was told to me in the past from a trustworthy source. Now, I find myself in a situation at work, dealing with an impacted CHW coil that would run >$6K to replace. The theory...

To best answer this question, I think its better to understand the defrost cycle on heat pumps. In a timed-temperature defrost, both timed (defrost timer motor) and temperature (temperature sensor)...

All great feedback, thanks guys!! Sometimes you get tunnel vision on trying to do a green DIY project that you forget the little things like adding a simple timer. Adding that, plus doing the install...

I've been doing some research about possibly installing a heat reclaim system for my hot water heater. There are many systems out there. Usually coming in a box that houses what only looks to be a...

hvacvegass, take it easy...
we've all had to deal with those nightmare jobs. Considering the space, homeowners budget, previous HvACK's that have now become your problem... "Creative" solutions must...

Yeah... Sorry for not specifying. There is of course a small ducted connection to the actual air handler unit. It will run flex off of that to a trunk line in the attic. No metal.

This has been an ongoing debate at work. I'm trying to find the CORRECT size of a supply flex plenum that will work for a 3 ton unit.

Our debates start with the ductulator being specified for...

With the information you gave, sounds like something on the control board is taking out 24V to your contactor shortly after the unit fires up. You mentioned that the Hi/Lo press switches check out...

I'm suspecting my IR thermal gun of crap readings. I wanna switch to a digital thermometer for overall temp readings; delta/T, pipe temps, ambient, etc.

Looking for something dual-channel, very...

For outside condenser units we use a Goodway electric powered compound chemical/water pressure cleaner. Its a little heavy but its on wheels. If a power source isn't readily available, it'll get...

You'll defiantly have to spend some time with this thick of a coil. A coil of that size will require some sort of low-concentrate chemical or a complete strip down to get out that deep dirt and...

Will it trip the GFI again after another 10-30 min or does it then run fine?

If you are having trouble with ambient temps being too low for proper diagnostic, cover the discharge air for the condenser to bring pressures up. Not exactly sure what the manufacturers typical...

Any of my experiences with Lieberts have proven them to be very reliable. Of course they have their horror stories but many of those horror stories can either be contributed to poor maintenance or...

That's very good to know. In that manual u sent me. I was very interested in the information about troubleshooting triacs, and opto-isos. The manual also gave you info on jumping out circuits on the...

That sounds pretty useful. Is that an app or is it a feature on all iPhones?

Hey Jerry, those files were tremendous help. Thank You

Hey Jerry,
Yeah... I'd appreciate that. The model # is: UH114AUAAM

If you don't have that specific model, anything similar to it would be fine.
My email can be found on my profile page... Thanx

Yeah there is a diagram inside the unit. I just wanted to find a copy for that specific reason of being able to sit down with it. Possibly save a PDF on my computer for future record

Does anyone have, or know where I can obtain wiring diagrams for a Liebert System /3 online?

I am working on a Liebert System /3, Dual circuit DX unit, Air Cooled, Standard AM controls, 480V/3ph....

Thanks guys, I appreciate the feedback. I have a couple of potential career choices available. My goals are to eventually progress past the journeyman level. Whether it be in some sort of specialty...

Does anyone who is either currently employed with Carrier or formerly employed with Carrier, know if the company offers some sort of continued education for their employees?

I heard that their...

I was also brought in through the "back door". Worked at a large mechanical contractor as a non union tin knocker. Asked enough questions and found the right people to get me into the construction...

I just started out with this company but I heard Back in Nov that the bonus last year was about $500. Yeah, that didn't happen this year. But, our GF was able to slip in an extra OT day, which he...

I've been in this trade for about 5 years. Mostly doing commercial contruction, namely unit installs and pipefitting. Currently I am doing service work out of Walt Disney World FL.

I kinda...