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If you worked for a decent company your buddy would be told to explain exactly what he found.... how he found it..... and why it was acting the way it was.
The bible is my constitution and the constitution is my bible.
WE THE PEOPLE refers to THEM and not YOU.
Jonathan Lawson 2024
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Originally Posted by
corny
If you worked for a decent company your buddy would be told to explain exactly what he found.... how he found it..... and why it was acting the way it was.
I wish that were the case, I saw what he wrote when the ticket was closed and asked him on my own, and he was vague about it, what I wrote before was as much as I got, had to rewire using different wires on tstat and condenser and said it happens all the time...He knows I'm still getting through the basics. He said he did not have 24v at the contactor, I know for a fact there was. I'm new, but not that new..lol
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Originally Posted by
psehunter
I wish that were the case, I saw what he wrote when the ticket was closed and asked him on my own, and he was vague about it, what I wrote before was as much as I got, had to rewire using different wires on tstat and condenser and said it happens all the time...He knows I'm still getting through the basics. He said he did not have 24v at the contactor, I know for a fact there was. I'm new, but not that new..lol
Don't worry about this you won't find out the correct answer, there was no short and the repairing tech sounds like an a hole not to explain it to you. forget it and move on.
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Originally Posted by
psehunter
I have a fluke 116 always set to auto, is this considered high impedance meter?
Set it to Low Z.
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2 Tim 3:16-17
RSES CMS, HVAC Electrical Specialist
Member, IAEI
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Originally Posted by
timebuilder
Set it to Low Z.
Never noticed that setting until you said it..lol.. Should I always use that for Low Voltage / 24V ?
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Post these issues in the pro section going forward so we can go into much more detail. You can use your meter to find a short, though it doesn't sound like the issue here. The easiest thing to do would have been to grab a new contactor off the truck when you were outside and just see if it would pull in with the low voltage wires places on the coil without installing it completely. If it didn't pull in you could grab your amp clamp and see if it's pulling any current. I know you didn't have a contactor on the truck, but make sure you get a few.
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Originally Posted by
hurtinhvac
new contactor off the truck when you were outside and just see if it would pull in with the low voltage wires places on the coil without installing it completely
Thanks, thats a neat shortcut.
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Originally Posted by
psehunter
Never noticed that setting until you said it..lol.. Should I always use that for Low Voltage / 24V ?
Use it when something makes no sense to you. Like this situation.
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2 Tim 3:16-17
RSES CMS, HVAC Electrical Specialist
Member, IAEI
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Originally Posted by
timebuilder
Use it when something makes no sense to you. Like this situation.
Maybe he should use it on that other tech.
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Originally Posted by
timebuilder
Use it when something makes no sense to you. Like this situation.
What makes that setting different than the normal Vac setting?
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Originally Posted by
psehunter
What makes that setting different than the normal Vac setting?
The low Z function will load the circuit and you probably would have seen a loss of 24vac. Don't worry as this has happened to many techs on time or another. You will learn from this situation and will probably not get stumped again. We learn new things every day.
Doug
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Something's off in this thread.
If we can accept op's statement that he had 24v
"ACROSS THE COIL " (not at the flag ends),
why are you all.. except Indy, running around saying that you need a load on the 24vac.
The contactor coil is the load.
A poor connection or a single frayed wire scenario would add resistance and voltage drop.
OP's next step should have been pull one wire off coil & ohm it.
PCEhunter, find out exactly what the other tech did to fix it.
edit: you say you had 24v "at all the switches..."
are you measuring across the coil, or to chassis?
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Originally Posted by
psehunter
He said he did not have 24v at the contactor, I know for a fact there was. I'm new, but not that new..lol
So what's up with that?
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Originally Posted by
IRBH
Something's off in this thread.
If we can accept op's statement that he had 24v
"ACROSS THE COIL " (not at the flag ends),
why are you all.. except Indy, running around saying that you need a load on the 24vac.
The contactor coil is the load.
A poor connection or a single frayed wire scenario would add resistance and voltage drop.
OP's next step should have been pull one wire off coil & ohm it.
PCEhunter, find out exactly what the other tech did to fix it.
edit: you say you had 24v "at all the switches..."
are you measuring across the coil, or to chassis?
If you start a thread in the Pro forum and ask about this, I will post a reply there.
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2 Tim 3:16-17
RSES CMS, HVAC Electrical Specialist
Member, IAEI
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Originally Posted by
IRBH
Something's off in this thread.
The contactor coil is the load.
"questions"
This part of IRBH's statement.
I would have to agree...
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Were you checking for 24V to ground, or with your meter leads on both coil terminals on the contactor? The other tech may have been confusing an open wire for shorted. You can have a low voltage short that won't blow a fuse. For example, R to Y can be shorted somewhere in the cable.
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Originally Posted by
VTP99
"questions"
This part of IRBH's statement.
I would have to agree...
I'm not going to delve into this in an open forum.
I will observe that none of us where there to examine the contactor or to take readings, and so we don't know if voltage readings were taken with the leads connected to the coil, or if continuity was established through the coil.
Even without that specific knowledge of the situation, there is more to say. In the Pro forum.
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2 Tim 3:16-17
RSES CMS, HVAC Electrical Specialist
Member, IAEI
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Agree. I despise Pro Members posting serious questions IN the Open Forum because,we,can offer SO much MORE Advice behind Enemy lines or prying eyes.
Short's Blow,Lack of voltage is 'another story.
No matter how long you have been doing this,
Go back and reread the Basic's.You WILL Learn something.
Why is it called,an Act of GOD when IT has Nothing to do with Him?
Will of the Devil would be more appropriate IMO.Just Saying.
PSALMS, 18 & 25.
I am Tired of High Efficiency Propaganda.
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Originally Posted by
VTP99
So what's up with that?
I dunno