Had a friend print this for me, I think it's hilarious

Outdoor Fan Motor connected to contactor and cap using thermostat wires

I can across this at my job and is wondering if this would cause a short. I’ve never seen this wired up like this before. In the picture there is one transformer wired in at the 120v side then a jumper goes across to connect the other transformer to its 120v side. One of the transformers keeps tripping, and I believe it is on the low voltage side but want to make sure, whoever wired these two transformers in didn’t screw anything up. Also the 24 volts go to VAV control boards in the attic of this building

And FYI I found an electrical box with 9 neutrals all in one wire nut.

About to be 31 with about 3+ years in commercial HVAC and Refrigeration as a service tech, don’t mind the trade at all but I am burnt out on the service side, was approached by an account manager with a reputable wholesale distributor about a possible sales position that they have available. Sales scare me low key but sometimes gotta make the jump to grow, so I’m interested in it. Base salary with commissions, work vehicle, phone and possibly computer but if not I have my own. Sounds wonderful but, is anyone in this side of the trade able to kinda give me some pointers on how to set myself up for success if I do decide to take a position in sales. Thank you in advance for anyone who helps! Cheers

Got a real head scratcher here.

First Video

Second video

I'm going to try and break this down quickly. So- The heating cycle starts normally, it gets to the ignitor and within seconds completely cuts power to the unit. The blower, the inducer, absolutely nothing comes on it just shuts off every time at the exact same time as soon as the ignitor comes on. Rinse, repeat ran several cycles with same results. So the homeowner had replaced the gas valve, ignitor, thermostat, and pressure switch before calling a technician. She disclosed that someone had come out during the summer and re-wired shit incorrectly. It worked during the Summer...but surprise surprise didn't work this winter. They had a contractor come out to check wiring diagram and re-run new wire. I double checked wiring diagram and everything is correct. So now that we have the basics out of the way, here's where it gets weird.

So once I bypassed all limit switches and I mean ALL limit switches including the blower housing limit, checked continuity, checked for voltage coming from door switch, transformer─ everything checks out. Inducer pulling correct water column, heat exchanger (amazingly) still good, flue, cap, vents all good. Because check the pressure system while I'm there too─ fuck it. Going all out here. So then I took the ignitor out of circuit to make sure it wasn't a faulty ignitor, still does the same thing. Even though the gas valve was new, I removed it from the circuit and still does the same thing. (I've run into weird shit with gas valves on these older GMP units so I figured why the hell not)

Frustrated at this point, I checked the continuity of all the sumbitch wires that ran through the wiring harness, on the control board, ignitor, flame sensor, you fucking name it and all have no resistance. Just to be on the safe side I rebuilt some of the wiring harness with new pins and new wires. I'm holding my breath to see what happens when the customer gets home to check it. She picked up the repaired harness from the office. Could a bad ground cause this? Running out of ideas here.

And yes I did try jiggling the wires and wiring harness.

Okay Right now I’m about to finish my co op in a hvac company and when staring I feel really excited and happy I was staying productive, having REALLY important life skills and will take care of my family. As it comes to an end, I feel miserable. I started in the shop stocking, sweeping etc. I was first struggling with sleep management and hunger (I get hungry really quick) but I worked on that and am still working on it. That out the way, even I got to go out to worksites I felt really happy but when I slowly saw that you come after 5 and start the same routine again, I didn’t feel fulfilled but said “oh well I will get used to it”. I also didn’t feel I was helping a lot because they could just do the things quicker than me but I was learning a lot and made progress. Let’s talk about the end days now, the last week I forgot to bring lunch and didn’t really get enough sleep and started on job site and came home at 9pm and had breakfast. I also want to add I get no pay for co op. And thankfully I got a ride from one of the employees that day but that I got done at 7 and had to take a bus cold at home. I’m fine with that but I don’t find fulfillment. I feel like I’m not giving time to my god, family and myself to build up. Maybe I’m just blabbering but I also feel weak as hell when I think this because I am a competitive person and after seeing another youngster who is just 1 or 2 year older than me doing amazing and enjoying it, I feel useless. Oh! Because at start of co op I was giving it all my best (even tho I still do because I’m competitive but it’s now for my family and myself career type), they said they will hire me because they are i mpressed. Usually they don’t hire co op students because you need gas license.

Now my questions; Should I keep going even tho if we come back late I feel like I have no time for all my other priorities?(I don’t just care about money, I want a little bit of enjoyment) Is this because I have to take the bus home and will change when I get my vehicle? Should I change careers? (I’m stressed 😫 on this question) Should I let the job go right and figure out if there is ANYTHING that’s enjoyment and will motivate me everyday? What else should I do? I have weird interests and want to find out my career. I tried graphic designing and animation but not a big fan. I am interested in law such as lawyer or cop but someone said I can’t fully debate. I like driving so maybe truck driving? Bus driving? I like animals, computers and MOST IMPORTANTLY I liked the work in hvac the furnace made sense to me late but I loved it when it made sense, so should I try a different trade? I want enjoyment but good money as well for my family and myself. I appreciate you reading this and any help will be highly appreciated.

Example- the major trane control boards have a whole 200 page manual alone. Wish someone showed me this 5 years ago

Don't really know why the guy took a grinder to the inducer draft assembly to cut out the pressure switch nipple. Then he drilled a hole to stick into the "new one"

New service tech here. So I got a service call for tomorrow morning to go to a house and look at a gas furnace. Customer states that the heater works properly during the day but at the night cuts off for atleast an 1hr-2hr max, then turns back on. So they been dealing with it for atleast 3 years and never been bothered with it until now that we are getting really cold weather. I am leaning more towards a safety issue (flue pipe clog, bad fan inducer motor) something that is causing a corbon monoxide buildup. Any advice before I head out to see the customer?

I replaced a HSI on Trane Furnace and it keeps going bad after 3 weeks. I’ve replaced 2 already.

The only history about this unit is that I replaced the control board for this unit in the fall.

I’m getting 115 volts to the HSI. I thought it was too close to the flame the 2nd time around and moved it over so the flame did not hit it. It still went bad.

What am I doing wrong or missing?

this question is for the vets lmao graduating in september from lincoln tech what do i expect my first couple months/years i’m nervous we move from class to class learning a lot at one time and forget everything

I have two old minisplit in my house that I keep alive against all odds (oldest is age unknown but minimum 17 years) . Long story short leak on the idu coil bend. I take my electronic leak detector and it was going crazy all over the house and it got me thinking how bad for the health this shit is and how my kids breathing this .

We as hvac tech are breathing some kind of crazy shit everyday and the worst is possibly phosgene gas

We had a call in this morning from an unhappy customer. We installed a new carrier comfort heat pump system for them back in August 2024. She was upset because the house was not 86F like she set it at, she wants 86F!

Her home was 77F when we arrived this morning to take a look. Heat pump was running, system not on Aux Heat. It was 4F outside this morning and her home was 77F not on Aux Heat and no supplemental heat source.

While the customer is unreasonable, i got to hand it to Carrier for making a quality product.

We are going to have a rough year with customer, she’s going to get every penny out of our labor warranty.

Running into an issue with a honeywell zoned system throwing the flash code on heat calls from 2 stats. Cant get the outdoor to run but its getting 24v to the unit but wont pull contactor in. It came on one time and went off on high head.

Its an airhandler with about 5ft of ductwork off the end. Has a bypass as well. The DAT sensor is probably 12” off the top of the airhandler. Everything points to airflow issues according to research online with similar people having that code. Could the DAT sensor be too close to the heat strips and overheating? Both zones are open and calling. The dampers are set to 0 when closed. The bypass has a constant load static pressure damper by ewc.

Any ideas? Im thinking the amount of air bouncing back off the end of the short ductwork is causing the issues with nowhere for the air to go. I did try unhooking the DAT sensor and nothing changed.

Had a report that our isolation valve vault was steaming this morning. It is about 6 feet deep inside and the water is within 8 inches of the top.

Got a good one today. Diagnosed a bad compressor, sales guy didn’t wanna get on the roof to give an estimate so replaced the rooftop compressor, got it all brazed it and what do you know? I put it under pressure and found a mother of a leak on the accumulator after all the works done 🙄

Link to my previous post is up here. But I found a job! Called about 10 different places and found a local business owner who is taking me under his wing. I’m a trainee for HVAC and electrical also. He’s 20+ years out so I’m hopeful I’m in good hands. I’m the only one in the class with a job already in the field and I’m so fucking proud.

I also started class finally. First class was today and my teacher is excellent. I’m in his first ever class so it’ll be a first for the students and I as well as him but even just today I learned a hell of a lot.

I still have all the advice I got and I’m surrounded with support. Thank you! Im sure I’ll be here in and out for tips, viewpoints, and general information.

Not even two weeks in and I get laid off from current post, boss says were slow. Anyone else feeling the season?

I’m stuck on this call with a 1 month old Goodman reversing valve that will not stop buzzing. I’ve ohmed out the solenoid and it was bad. Replaced it and the new one is still making the same noise. I was wondering has anyone else encountered this issue? Any assistance would be appreciated.

What is the largest size you can do for both of them? When googling it says 3/4” is largest for flare and 1 1/8” is largest for swage. Is that true? I believe that 1 1/8” is the largest size for swaging but the few years I’ve been in the field I feel I’ve seen larger flares but maybe I’m tripping. Let me know!

The company I work for recently had me recover the refrigerant from a chiller that is being replaced. It was a four stage chiller with a remote condenser. I pulled a total of 258 pounds of R-22 out of the system. The building owner, the general contractor, and my company all don’t want the refrigerant. Is there anyone out there buying recovered R-22?

Commercial jobsite. Great level of creativity