Carrier CLO (Current or Compressor Lock Out Board) explained.
As requested here is a brief explanation of the operation of a basic Carrier CLO board.
Жүктеу.....
Пікірлер: 47
@destronger531313 күн бұрын
Great video. On some of the (older?) carrier units these are in, the larger Carlyle compressors have a internal protector in 24v series with the LP, HP, FP.
@megabadass304 жыл бұрын
Thank you, this video is great, and the diagram being drawn out is absolutely amazing, so helpful
@arthouston73616 жыл бұрын
Hi, SLC. TB here. The most frequent cause of the CLO locking out the compressor is when the LP switch opens during a low ambient startup on units without a working economizer. Carrier had a timer kit that could be installed to bridge the LP switch until pressures could rise enough that the LP would stay closed. We found we could make our own bypass. Of course, I have found the compressor conductor removed from the sensing loop and terminals 2 and 3 jumpered together by others... which is not the right approach to that issue. When they place that jumper, they lose the protection the safeties provide, including the HP switch and the freeze stat. The purpose of the board is to not allow the contactor to ride on the safeties, opening and closing repeatedly when there is a problem. This way, the tech can know that an issue exists, and then investigate the issue, and the contactor can have a much longer lifespan, along with the compressor. That's a very good explanation of the way it works, too.
@slctech3432
6 жыл бұрын
Thanks TB. Hope all is well with you, loving my new gig in the private industrial side of things.
@elcrazy80177 жыл бұрын
Thanks a lot SLC tech for clarifying things for me. Never knew how it actually worked. Great teacher!
@darwinjames20006 жыл бұрын
Finally, found what I was looking for. Thank you! Just to understand the way the climate control board works on a condenser.
@gillcorona9615Ай бұрын
Great explanation 👌
@russellkelley27373 ай бұрын
Thanks for sharing this information it really helped me understand what is happening to the unit I am working on
@3dgar916 жыл бұрын
Great explanation! I ran into 1 today not knowing what it was. Now I do. Thanks!
@rkinnett Жыл бұрын
This made my day. Thanks for your very clear explanation.
@samho93186 жыл бұрын
Thank you, thank you.....SLC TECH😀😀😀😀. I had been searching for this circuitry and explanation for a while. I was so happy to came across your channel and VOILA!!!! there she is hehehe. The best ClO explanation of what it does and how it operates. BTW , Thanks for the wiring diagram. God bless you and your family.
@matth502 Жыл бұрын
Holy crap I just had a issue with this today and I’m not a carrier tech but this board through me a loop , didn’t know exactly what the board does but now I think I know what’s wrong
@EyesofIllusion4 жыл бұрын
Thank you for explaining. It now makes sense to me now🙏
@fighkb4 жыл бұрын
Great video, very illustrated 👏👍🏻
@mikemalone61037 ай бұрын
great explanation / concept
@wannis10011 ай бұрын
Hello SLC Tech Yesterday I was working on one of the Carrier Horizontal units with a Current Sensing Board. It was my first time troubleshooting one of these boards. I suspected it had something to do with the amp draw because my compressor was drawing too much amp and it was shutting down on LRA Locl Rotor Amp. When I removed the common wire on the board and contactor will energize try to start the compressor but it will fail on LRA. Thank you for clarifying. Great educational video.
@josephdalton8026 жыл бұрын
Great video very informative need more on wiring
@ralphruiz10662 жыл бұрын
Thank you for explaining this.
@michaelcostello69915 жыл бұрын
Great explanation. Thank you
@MrRene19682 жыл бұрын
Thank you sooo much. My air con does not recover after power outages, until I manually reset the thermostat, sometimes I have to turn off the breaker.
@Anihmal5 ай бұрын
Thank you for this video, by any chance are you familiar with the blue control boards with the CLO moles plug intertwined with the main board itself? And if the CLO trips would the condenser fan motor stay running without the compressor?
@apr9286 Жыл бұрын
TY , For this. So if I measure 24 volts at terminal X that means the board is in Lockout due to a low current at the compressor? Other than that X terminal should not read any Voltage in normal operation operation.
@firozrajhati35543 жыл бұрын
Amazing video I understand every thing about this lock out Realy in only 8:45 mint thanks
@mohammedalobaidi99819 ай бұрын
Thank you so much
@guddumishra56553 жыл бұрын
Very good example sir thanks
@GKRAJAN7 жыл бұрын
Good message sir thanks
@captainnemo35496 жыл бұрын
Thanks, had that issue today
@omarsharif26665 жыл бұрын
Thanks sir good information and nice explanation sir i have one question plz show me high amp auto cutoff circuit board so we can protect compressor from high current plz sir
@syedbasheer82103 жыл бұрын
Thanks .its helps alot🤩
@michaelcostello69915 жыл бұрын
Now i know how it works what is its main purpose of the CLO . To detect any fault that stops current in winding and require a power cycle to reset ??
@elcrazy80177 жыл бұрын
Also very good diagram
@shahrukhqureshi56215 жыл бұрын
Good job sir
@rb32634 жыл бұрын
What if it's a 2 stage and both have clo, they are in series. If second stage drops off then itll trigger the clo right?
@rb3263
4 жыл бұрын
Nevermind, if the y de-energizes and energizes itll reset that board like you stated.
@jude22427 жыл бұрын
THANKS !!
@rajaawaisshahzad432 жыл бұрын
Yor explain it really amazing thanu kindly make a video like this on pc board of trane package
@user-nh6xr5cw1w Жыл бұрын
Good ✔👍
@samho93186 жыл бұрын
One more thing to add: can I temporarily eliminate this board once I determined it defective ? New board take a week @ the supply house. Thank you. Sir
@arthouston7361
6 жыл бұрын
It is actually pretty rare for the board to fail. It can happen, but I encourage techs to exhaust all other avenues, first.
@stevengeis1466 жыл бұрын
great
@prithwishdey67083 жыл бұрын
Sir please one video make on Emerson ICM-220 lock out relay Waring cannection.
@marcelobustos39152 жыл бұрын
Alguien me puede traducir al español está explicación?? Gracias
@nascimento80833 жыл бұрын
OK
@sumeshac1103 жыл бұрын
Sir voice not clear
@braintumor943 Жыл бұрын
Dude, you didn’t mention that it won’t start up if it senses current when not calling, not so needed with this but the older ones people try to jump out
Пікірлер: 47
Great video. On some of the (older?) carrier units these are in, the larger Carlyle compressors have a internal protector in 24v series with the LP, HP, FP.
Thank you, this video is great, and the diagram being drawn out is absolutely amazing, so helpful
Hi, SLC. TB here. The most frequent cause of the CLO locking out the compressor is when the LP switch opens during a low ambient startup on units without a working economizer. Carrier had a timer kit that could be installed to bridge the LP switch until pressures could rise enough that the LP would stay closed. We found we could make our own bypass. Of course, I have found the compressor conductor removed from the sensing loop and terminals 2 and 3 jumpered together by others... which is not the right approach to that issue. When they place that jumper, they lose the protection the safeties provide, including the HP switch and the freeze stat. The purpose of the board is to not allow the contactor to ride on the safeties, opening and closing repeatedly when there is a problem. This way, the tech can know that an issue exists, and then investigate the issue, and the contactor can have a much longer lifespan, along with the compressor. That's a very good explanation of the way it works, too.
@slctech3432
6 жыл бұрын
Thanks TB. Hope all is well with you, loving my new gig in the private industrial side of things.
Thanks a lot SLC tech for clarifying things for me. Never knew how it actually worked. Great teacher!
Finally, found what I was looking for. Thank you! Just to understand the way the climate control board works on a condenser.
Great explanation 👌
Thanks for sharing this information it really helped me understand what is happening to the unit I am working on
Great explanation! I ran into 1 today not knowing what it was. Now I do. Thanks!
This made my day. Thanks for your very clear explanation.
Thank you, thank you.....SLC TECH😀😀😀😀. I had been searching for this circuitry and explanation for a while. I was so happy to came across your channel and VOILA!!!! there she is hehehe. The best ClO explanation of what it does and how it operates. BTW , Thanks for the wiring diagram. God bless you and your family.
Holy crap I just had a issue with this today and I’m not a carrier tech but this board through me a loop , didn’t know exactly what the board does but now I think I know what’s wrong
Thank you for explaining. It now makes sense to me now🙏
Great video, very illustrated 👏👍🏻
great explanation / concept
Hello SLC Tech Yesterday I was working on one of the Carrier Horizontal units with a Current Sensing Board. It was my first time troubleshooting one of these boards. I suspected it had something to do with the amp draw because my compressor was drawing too much amp and it was shutting down on LRA Locl Rotor Amp. When I removed the common wire on the board and contactor will energize try to start the compressor but it will fail on LRA. Thank you for clarifying. Great educational video.
Great video very informative need more on wiring
Thank you for explaining this.
Great explanation. Thank you
Thank you sooo much. My air con does not recover after power outages, until I manually reset the thermostat, sometimes I have to turn off the breaker.
Thank you for this video, by any chance are you familiar with the blue control boards with the CLO moles plug intertwined with the main board itself? And if the CLO trips would the condenser fan motor stay running without the compressor?
TY , For this. So if I measure 24 volts at terminal X that means the board is in Lockout due to a low current at the compressor? Other than that X terminal should not read any Voltage in normal operation operation.
Amazing video I understand every thing about this lock out Realy in only 8:45 mint thanks
Thank you so much
Very good example sir thanks
Good message sir thanks
Thanks, had that issue today
Thanks sir good information and nice explanation sir i have one question plz show me high amp auto cutoff circuit board so we can protect compressor from high current plz sir
Thanks .its helps alot🤩
Now i know how it works what is its main purpose of the CLO . To detect any fault that stops current in winding and require a power cycle to reset ??
Also very good diagram
Good job sir
What if it's a 2 stage and both have clo, they are in series. If second stage drops off then itll trigger the clo right?
@rb3263
4 жыл бұрын
Nevermind, if the y de-energizes and energizes itll reset that board like you stated.
THANKS !!
Yor explain it really amazing thanu kindly make a video like this on pc board of trane package
Good ✔👍
One more thing to add: can I temporarily eliminate this board once I determined it defective ? New board take a week @ the supply house. Thank you. Sir
@arthouston7361
6 жыл бұрын
It is actually pretty rare for the board to fail. It can happen, but I encourage techs to exhaust all other avenues, first.
great
Sir please one video make on Emerson ICM-220 lock out relay Waring cannection.
Alguien me puede traducir al español está explicación?? Gracias
OK
Sir voice not clear
Dude, you didn’t mention that it won’t start up if it senses current when not calling, not so needed with this but the older ones people try to jump out