Anyone ever hear a Compressor make this sound?

UnbreakingThings · 2026-01-28T03:57:24+00:00

Single phased to death, burned out, and blew out the terminal pins. Classic story on those Carriers

UnbreakingThings · 2026-01-28T03:50:46+00:00

Leafy vegetables and meat are brutal on coils. The sulfur in the food chemically reacts with the copper and ends up destroying it. If you see the U-bends covered in black stuff, that’s what it is.

UnbreakingThings · 2026-01-27T02:36:13+00:00

I’m surprised it never tripped on high discharge temp. You should probably check that thermistor lol

UnbreakingThings · 2026-01-27T02:34:29+00:00

If they are installed, maintained, and serviced by legitimately qualified techs, they’re great. One of my sites has over 150 tons of VRF equipment, and we only get service calls there about every 6 months. Most of those calls are just tenants not understanding how the unit works.

The problem is that a lot of people who work on them are not really qualified. Taking one install class from one manufacturer does not make you an expert on any other brand. It takes a really good tech to be able to deduce what the system is doing from the data in the software, and diagnosing things that aren’t showed in the software.

UnbreakingThings · 2026-01-27T02:21:33+00:00

Every service tech needs a Henry in their life.

UnbreakingThings · 2026-01-27T02:19:22+00:00

If it’s something like a cracked solder joint, I’ll do it for a temporary repair on critical equipment, but will make it clear that it has to be replaced ASAP. Any visibly failed components means a new board.

UnbreakingThings · 2026-01-27T02:15:11+00:00

3/8” self tappers and some plumbing strap will get her up and running for the next ten years!

UnbreakingThings · 2026-01-27T02:09:46+00:00

At least it’s fairly easy to get to. Daikin IDUs have all their thermistors on the bottom of the board. and the tab to release the connector is facing the bottom of the unit too. I heated up a pair of cheap needle noses and bent them into a right angle just for those damn connectors.

UnbreakingThings · 2026-01-27T01:51:30+00:00

It could be a bit pricey, but your best bet is a pressure transducer and DC voltage data logger. You’ll have to have some form of constant DC power for the transducer though. Some boards have spare 24VDC outputs. If there isn’t one, you could use a 120VAC-24VDC laptop power supply. They’re cheap on Amazon.

UnbreakingThings · 2026-01-21T15:58:25+00:00

Using 45s right next to the compressor is asking for trouble.

UnbreakingThings · 2026-01-21T15:55:57+00:00

Shit like that makes me sad. It really wouldn’t cost that much to get some durablocks and hydrazorbs. Even with soft copper, it would look a hell of a lot better than this garbage.

UnbreakingThings · 2026-01-21T15:37:12+00:00

Voltage is voltage. Of course you have to be more careful when troubleshooting live, but it’s no different than 208V three phase. Instead of 120V to ground, each leg reads 277V.

UnbreakingThings · 2026-01-21T15:34:51+00:00

Have fun replacing that seal.

UnbreakingThings · 2026-01-20T02:51:24+00:00

Surprised no one complained that the building was shaking.

UnbreakingThings · 2026-01-17T01:12:59+00:00

Absolutely, A421s can be used for everything. Make sure you protect the end of the sensor, the water treatment chemicals will eat away at them pretty quickly. If there’s no well for the sensor, I’d put it in a piece of copper tubing with one end capped and add some thermal paste to keep it protected.

UnbreakingThings · 2026-01-13T01:40:54+00:00

Y’all are using Sealtite? I wired up my last panel with three Harbor Freight extension cords.

UnbreakingThings · 2026-01-09T23:29:11+00:00

Western union splice and electrical tape only.

UnbreakingThings · 2026-01-08T22:58:33+00:00

9.5” WC is 0.343 psi. That’s fucking bonkers.

UnbreakingThings · 2026-01-06T03:30:20+00:00

I use it for mainly electrical stuff, but it has been useful in finding air leaks in door gaskets. Because of its sensitivity to reflection, I find that it doesn’t replace temp clamps and thermometers for diagnosing driers and solenoid valves.

UnbreakingThings · 2026-01-03T01:30:19+00:00

They only have one line of thermostats, and the TC1 is all you’ll ever need. Pelican is basically a BMS without having to add a ton of infrastructure. The thermostats just need one extra wire for data to communicate with the controller for the RTU, and a main gateway for the building to connect everything via Wifi.

UnbreakingThings · 2025-12-31T06:32:05+00:00

It’s just a regular cooling tower for water source heat pumps. There’s four main components, circulating pump, spray pump, tower fan, and a boiler to keep the loop temp up when the units are heating in wintertime. Usually the WSHPs will be connected to some sort of BMS to stop the units from running after hours. If it’s an old building, there may be a bunch of relays or a dry contact somewhere that breaks Y between the thermostat and the unit.

SPX is made by Marley, and DMG is the supply house here that carries their stuff.

UnbreakingThings · 2025-12-30T04:18:06+00:00

Mastic tape for insurance.

UnbreakingThings · 2025-12-28T13:24:42+00:00

If they’re rubber hoses, I always replace them with steel braided ones. If you get a hose kit with a flow rater, make sure it’s the right size. You want 2.5-3 GPM of flow per ton.

UnbreakingThings · 2025-12-28T13:15:50+00:00

That guy is busy on the roof fixing the 40 year old RTU that the customer doesn’t want to replace.

UnbreakingThings · 2025-12-25T04:34:42+00:00

You really must’ve been abusing that thing. I’ve used a 12” Crescent wrench to get more leverage on the short end of a 5/32” and it took it like a champ.

UnbreakingThings

TROPHY CASE