Jimmyjonestoo
Well-Known Member
Anyone do hvac? Got some questions.
Random Jibber Jabber Thread
- Thread starter Trolling
- Start date
Blue Wizard
Well-Known Member
I used to but nothing technical. Mostly building and installing duct work and condensation lines and stuff like that.
Jimmyjonestoo
Well-Known Member
Ac quit a couple weeks ago. Replaced the capacitor. Nothing. Today i replaced the fan motor. When i flipped on the unit from inside it made this crazy humming noise. Im thinking thermostat is fucked? Also the blades now seem to be really tight and dont spin freely. The motor is but a few hours old.
Blue Wizard
Well-Known Member
Blades are tight now? They should turn freely, did you check the motor again? Are there any frayed or burnt wires in the outside unit?
Jimmyjonestoo
Well-Known Member
Ya they are tight now. I hooked everything up exactly how it was when i took it apart. No frayed wires.
Blue Wizard
Well-Known Member
Does the outside unit come on at all? The fan turn? Is the motor burned up? All the wiring on inside unit good?
Jimmyjonestoo
Well-Known Member
This is all the outside unit. Capacitor replaced a couple weeks ago and a literally brand new motor today. Hums loud as hell snd does not spin. I dont know enough about it to fuck with the in house portion of the system.
Blue Wizard
Well-Known Member
Replacing run caps, motors and thermo stats was about as far as I got on the technical part of the job. If you needed duct work installed or a return air cabinet built I was your man.
Humming usually means the motor is trying to turn but can't, I've seen them burn up immediately if there's a short somewhere.
Humming usually means the motor is trying to turn but can't, I've seen them burn up immediately if there's a short somewhere.
Jimmyjonestoo
Well-Known Member
I really hope i didnt burn out the motor. 120$ i didnt really have.
Blue Wizard
Well-Known Member
Yeah, I had that happen at work. Turned out there was a wire that had the insulation get stripped off and it was making contact somewhere on the unit (HVAC did the work not me) and it was over loading the motor.
Jimmyjonestoo
Well-Known Member
I know the heat works fine if that means anything.
Blue Wizard
Well-Known Member
Nah. You can run heat on most units without the outside unit at all. If we had a AC unit break in the winter time at my old complex we used to switch them over to some setting that by-passed it. I can't remember what it was now because these units at my current complex are completely different.
Aeroknow
Well-Known Member
Check the contactor
sure sounds like it's the contactor. They do go out pretty oftenPm me if you don't know what a contactor relay switch is.
It's the only thing in the compressor box that will chatter like that.
Last edited:
Blue Wizard
Well-Known Member
I don't really know, it would help if I could look at it. I know there are some tests you can do to check whats wrong with the unit but the equipment is expensive.
TripleMindedGee5150
Well-Known Member
So I've been kind of having some problems lately. My 2 plants turned out to be males. One of mybseeds didn't even make it. The last one has been in the ground since June first and my beer can is still bigger.
Turns out my neighbor's uncle, friend's , cousin's , mom's , brother is having issues with his ferret. You guys can send me free weed if you like.
Don't mind the bad water
Turns out my neighbor's uncle, friend's , cousin's , mom's , brother is having issues with his ferret. You guys can send me free weed if you like.
Don't mind the bad water
AlphaPhase
Well-Known Member
Whooaaaaaaaa Nelly. That was awesome
Jimmyjonestoo
Well-Known Member
Yeah i have no clue what that is. Can you explain please?Check the contactor
Pm me if you don't know what a contactor relay switch is.
It's the only thing in the compressor box that will chatter like that.
Aeroknow
Well-Known Member
This is a contactor:
It handles the power to the compressor unit. The low voltage lines from the thermostat switch hook up to it, and is used to turn the compressor on and off.
Check out these two vids:
Please be careful when messing
around with electricity
You should use a multimeter to fully test the contactor, which is best, and should be done either way. Make sure there is power being supplied(240v and 24v). You can quickly test the contactor by using a screw driver and manually pushing down the switch like that dork did in the video. If it now works and everything else is good, replace the contactor. 10-20 dollar part, available at any electrical distributor.
Last edited:
