"just putting out fires" **proceeds to clean up system and make everything nice and then check the rest of the equipment on the roof** Fantastic work as always!
I love your videos, I'm a commercial hvac tech, but when I moved to orange county, the hvac techs were also refrigeration techs. I stumbled on you, Nor Cal, and a few others to help me.
I came to watch some HVACR work, stayed for Luke. That's one adorable little fella. I've got a soft spot for hound dogs with big puppy eyes and floppy ears.
That heat wave was absolutely brutal. I survived 3 months of the miserably hot summer here in the high desert, until this heat wave came and ruined me. Saturday Sept 3rd (the day before you made this video) I got sick with heat exhaustion. I was in a 130 degree attic for almost 2 hours trying to diagnose a zoning system problem. Finally got outta there, and figured well at least I’m not in an attic anymore. My next call was a residential PM for an RTU, it was 110, humid, and no breeze. That’s when I started to feel sick. My next call was another PM. I was up at the top of my 8 ft ladder checking return air temp, felt woozy and dizzy and almost lost my balance. Could’ve been worse. This heat wave was no joke.
Chris, I just wanna say thank you so much for posting these videos. I’ve been doing this for 27 years for a large Ac company down in Orlando Florida and I’m learning a lot from watching your videos. Im picking up so many little tips and tricks here and there from you and I appreciate you taking the time to share your experiences with us.
Chris, I hadn’t watched any of your videos in quite some time, since I’ve been stuck in the steam plant at the prison, but now that I’m moving back out onto a yard, a yard with almost 20 walkins, half of them freezers, I started watching your videos again. It’s noticeable how you have slow down and take more time explaining things, I think that’s a bright move, a move in the right direction.
Yeah working with them for 10 years shows their confidence in your abilities to see problems in the future and fix them before they become big problems in the middle of the night
Eres un gran hombre Chris, pues tienes un buen corazón ya que nos enseñas todas las cosas buenas que se tienen que hacer en la refrigeración. Muchas gracias. Saludos desde Coacalco Edo de México.
Newer sub, here. Commercial tech, 13yrs in. This is my new favorite channel. Love the content + format..! - Informative, practical, and straight forward. The closing words at the end of each video are a cool touch. It's like a mini podcast/moment of reflection. You're very good at this. Keep it up!!
I like the simple refrigeration systems you have at USA. Here in Europe they are getting more and more complex due to all electronic systems that are getting to our lives. keep the good work Chris, greetings from Greece!
That’s interesting, man. I can’t imagine what I’d run into overseas 🤔 I have run into European equipment installed over here in the States, and for the most part, those machines are relatively normal, aside from having to convert kg to lbs, and C° to F°, things like tha. Not that difficult, but…. There was one chiller I worked on from Germany (if I remember correctly) that serviced laser cutting equipment. I was surprised at the customer service. It was spot on, real easy to get a hold of tech support 👍
@@seanmichael8202 they are coming to your country with US specifications, they are not the same. Here in my country i do service a lot of bitzer units via laptop and lan connection port.
Great vid man! As a new tech I really appreciate your vids, especially your trouble shooting, process and anything with electrical! lol keep up the good work man!
Chris watching you clean the coil is so satisfying watching all the dirt and dust just wash away it's so ASMR? Hope your weather calms down soon it's freezing here in the UK keep safe Mr Chris dude
Definitely love watching your vids! My only minor complaint is that it would be better to disconnect power prior to spinning the condenser fans. Keep up the great troubleshooting skills! I love how you teach people to proceed in a logical manner. Some people just like to jump to conclusions.
@@nikyjim Sure, but we are cranking the AC's just as hard in the midsouth and pretty much 24/7 from May to late September. We have a lot less people than cali for sure, but we also have a lot less power production. Cali's electric management has been a mess for decades though. Not sure why considering they deal with much less severe weather than most places. There equipment should have very long lives and easy RTE for the power companies. We have had substations here that are less then 5 years old be completely wiped out from tornadoes and the power company has them rebuilt in just a few months.
I think stuff gets so dry that when you get a bit of moisture all that grit and dust just gabs onto things and it dries. We get that here in the autumn with dry weather after rain - the soil kicks up and gets in the inside of houses and cars in the windows and creates a film. Of course all that stuff has minerals and stuff in it, which can change the chemistry of the condenser coils creating a bit of a layer of schmo the heat has to get through. In the springtime we also get the clogs of pollen which its own fun adventure to clean.
Watching your videos has teached me a few things, and I'm not even going into the HVAC trade, at least planning on it yet. It also reminds me of the systems at my current job. For example over a month ago one of the rooftop units that gets no love or attention ever failed over a month ago. Management denies it failed, even though the thermostat is calling, it's 79f+ in the store most of the time, and no airflow from the vents. No breaker is tripped and I believe it failed on high head pressure like this one did as it stopped working during a pretty hot week. I can only theorise though. I see why preventative maintenance is important, but our owners don't care as they are cheapskates. The makeline for example is very dirty where the compressor is, and it has failed before resulting in it needing to be fixed in the middle of the day while we're trying to work.
Nice work. God I wish we were super busy. Kind of a shoulder season for us. Not too hot so nothings breaking. And we haven’t started our heating PMs yet. So I’m struggling to find something to do all day. Can’t wait to move south and be busy all the time.
I remember those really low voltages when i lived in San Diego....when i lived in Buffalo....absolutely no issues with voltage sags. It was always stable.....here in Austin....its better than California, but not as good as Buffalo. Usually 208v equipment is at worst 201v.....in the morning and in the evening it is a little better. But 195v....is pretty low. It is enough to pull in that contactor. If memory serves me correctly....you can have up to 20% less than the rating and it'll still pull in. You might want to start investing in Buck Boost XFMR'ers for those really bad areas
You know? Now that I think about it, the systems that I've had to change compressors on have the same pattern of discoloration on the discharge line. Makes me think that these condensers I have are flooding back bad........now I have a connection and I'm not crazy!
This crazy heat wave we just had here in So Cal, VC area. We had capacitors go out like crazy. We also had dumb calls on units freezing over due to tenants running equipment set at 68°, had to constantly tell people the equipment was not meant for this high heat.
That's crazy my first service call of the day was for a walk in freezer that wouldn't turn on. Ended up being a bad temp control but nonetheless great video
The amount of times I’ve heard you explain the viper foam gun is ridiculous at this point I feel like the sales rep 😂😂 love the vids though man i know you gotta say it incase theres new viewers
There is a minimum voltage that it will still pull it in. A 24v contactor will pull in with as little as 19v. I believe its called pilot duty, which some relays like RIB will state on their relays
One WIC i made and service has 198v line to line 3ph and even one of the lines is almost 10 volts under like 189-190v. How can you give warranty on something like that?
That liquid injection system looks very janky doesn't it?? Also i think the current sensing is just to ensure the compressor does not get a shot of refrigerant when its off but the injection goes off the bi mettallic switch in the discharge line please correct me if i'm wrong. And i'm trying to find a reason for the suction line check valve and can't find one. I do install discharge check valves in scrolls that have to pumpdown but the suction i don't get it...
Didn't listen to outro so apologies if this was answered: Why was the receiver and compressor hot if the HP peanut switch was bad? Edit: ambient temp tricked you into thinking it had been running?
is that can going into the compressor the f/o metering device? or a filter drier just before metering? May be a dim question.... but it IS a question lol.. yep, confirmed. it's 100%a question
You put you hand on compressor and said it was hot....then put your hand on liquid receiver and said "This condenser is hot"....do you guys in the States call it a condenser? Cheers. Trev Australia
No way for it to make it into the system. It's such a little amount if it did but those lines should always be under positive pressure. Only way is if suction control was cutting out too low (in vacuum) which isn't good for many reasons. High side will never. Nonetheless, no way to purge those lines.
Being on-call, you have to be vigilant about all the systems the customer has operating. It's such a sting when you walk into your living room, just to be paged to return to a site you just spent 10 hours at over something silly.
Dude… I know you did it super carefully, but touching the fan blades with your bare finger without turning off the disconnect, VERY unlikely they could have started, but still possible, especially when dealing with auto reset high pressure switches, it’s definitely a bad habit.
Auto-reset HPCOs are dumb. If the coil is that dirty, it needs to be cleaned. If fan cycle isn't functioning, it needs to be replaced. If condenser fan motor is dead, it needs to be replaced. Don't understand why auto-resets are put on these units when a HPCO event will never fix itself. Just a good way to smoke a contactor or compressor until someone gets on the roof.
How do you know it is not the low pressure control? All the switches are in series like Christmas light string. Any one of the OTHERS could be open & you would see zero V on the low pressure control regardless whether it is open or closed. I note that despite having 3 phase power, the fan motors are 1 phase (capacitors are there). Comment about cleaning: the water flow should go in the reverse direction that the air goes, so you don't push the dirt further into the condenser (I assume the fans pull the air through the condenser). You also need to clean the blades. Manufacturers make it hard to access both sides of the condenser. Those fans should be set on hinges (with the wiring passing over the hinge axis to not interfere with opening).
@@davejohnsonnola7908 Closed switch will certainly show 0 volts across the contacts. But an open one will also show 0 volts across its contacts if there is another open one in the series circuit (the same as if all power is cut). Schematic lesson is: is ANY switch is open in the circuit, there is NO voltage ANYWHERE in the circuit. So other switches will measure as zero volts across them, even if they are open. If only ONE of the switches is open, you will find it with voltmeter checking across each switch as you describe. Better way is to put one end of the voltmeter on one end of the circuit (either the neutral or the contactor feed from outside) & probe along the circuit between the switches. When you are all the way across, you should see voltage (if you don't, the cooling unit is not sending it). As you probe along, you will find the first open switch when you move the probe to the other side of the open switch. You can determine the status of the other switches until you fix the open one.
@@kaptaintrips Regarding the electrical class you need to go. In a series circuit, if you have an open ANYWHERE in the circuit, the ENTIRE circuit goes dead! All OTHER switches in the circuit will read zero whether open or closed. Strategy used only works if only ONE switch is open. Murphy's law operates in A/C units. There can be multiple failures! Regarding coil cleaning, it is common for a film of crud to form on the side of the condenser that the air ENTERS. Spraying water on that side tries to push that crud THROUGH where it ends up causing massive clogging. On some of the newer A/C condenser units, you can't spray water on the condenser AT ALL without risking damaging the electronics.
Ok. This guy uses blue and yellow viper cleaner. Assumming yellow is the aluminum safe stuff. How come he dont just use the yellow cleaner on everything?
@@HVACRVIDEOS neat. Always fun troubleshooting and wondering what caused it as you are explaining what the unit is doing. I also fixed a walk in cooler because of your videos.
Hey Chris, for school I have to write a paper about someone who exhibits Hard work, honesty, and integrity and I'm writing it about you.
That’s actually pretty cool. Too bad you didn’t get a response on that. Keep up the good work man 💪🏽
Your dad reading this 👁👄👁
@@marcusmitchell95695 7i77
"just putting out fires"
**proceeds to clean up system and make everything nice and then check the rest of the equipment on the roof**
Fantastic work as always!
Just making sure the fires stay out ;)
I love your videos, I'm a commercial hvac tech, but when I moved to orange county, the hvac techs were also refrigeration techs. I stumbled on you, Nor Cal, and a few others to help me.
Arent we all both? Lol
In my state, refrigeration and hvac are two separate licenses.
@@joelking8588 depends everywhere. Here in FL, most companies combine the two, only some will have different divisions for HVAC and for Refer
Here in California it’s both, HVAC-R. But you could actually choose to do only refrigeration or only AC
@@drummersnare6276 it's not that way in San Diego. But definitely in smaller areas
I came to watch some HVACR work, stayed for Luke. That's one adorable little fella. I've got a soft spot for hound dogs with big puppy eyes and floppy ears.
That heat wave was absolutely brutal. I survived 3 months of the miserably hot summer here in the high desert, until this heat wave came and ruined me. Saturday Sept 3rd (the day before you made this video) I got sick with heat exhaustion. I was in a 130 degree attic for almost 2 hours trying to diagnose a zoning system problem. Finally got outta there, and figured well at least I’m not in an attic anymore. My next call was a residential PM for an RTU, it was 110, humid, and no breeze. That’s when I started to feel sick. My next call was another PM. I was up at the top of my 8 ft ladder checking return air temp, felt woozy and dizzy and almost lost my balance. Could’ve been worse. This heat wave was no joke.
take care, while hypothermia (cold) is slow, heat exhaustion and heat stroke happen fast.
Chris, I just wanna say thank you so much for posting these videos. I’ve been doing this for 27 years for a large Ac company down in Orlando Florida and I’m learning a lot from watching your videos. Im picking up so many little tips and tricks here and there from you and I appreciate you taking the time to share your experiences with us.
Chris, I hadn’t watched any of your videos in quite some time, since I’ve been stuck in the steam plant at the prison, but now that I’m moving back out onto a yard, a yard with almost 20 walkins, half of them freezers, I started watching your videos again. It’s noticeable how you have slow down and take more time explaining things, I think that’s a bright move, a move in the right direction.
Yeah working with them for 10 years shows their confidence in your abilities to see problems in the future and fix them before they become big problems in the middle of the night
Eres un gran hombre Chris, pues tienes un buen corazón ya que nos enseñas todas las cosas buenas que se tienen que hacer en la refrigeración. Muchas gracias. Saludos desde Coacalco Edo de México.
Newer sub, here. Commercial tech, 13yrs in. This is my new favorite channel. Love the content + format..! - Informative, practical, and straight forward. The closing words at the end of each video are a cool touch. It's like a mini podcast/moment of reflection. You're very good at this. Keep it up!!
Thanks for the nice words bud
I like the simple refrigeration systems you have at USA. Here in Europe they are getting more and more complex due to all electronic systems that are getting to our lives. keep the good work Chris, greetings from Greece!
100% right
That’s interesting, man. I can’t imagine what I’d run into overseas 🤔 I have run into European equipment installed over here in the States, and for the most part, those machines are relatively normal, aside from having to convert kg to lbs, and C° to F°, things like tha. Not that difficult, but…. There was one chiller I worked on from Germany (if I remember correctly) that serviced laser cutting equipment. I was surprised at the customer service. It was spot on, real easy to get a hold of tech support 👍
@@seanmichael8202 they are coming to your country with US specifications, they are not the same. Here in my country i do service a lot of bitzer units via laptop and lan connection port.
@@seanmichael8202 and also a lot r744 units are getting to our lives! A real nightmare...
@@ΗλιαςΜπελος-σ1ψ I work on Co2 (r744) and it can be an absolute nightmare...and dangerous
Great vid man! As a new tech I really appreciate your vids, especially your trouble shooting, process and anything with electrical! lol keep up the good work man!
Chris watching you clean the coil is so satisfying watching all the dirt and dust just wash away it's so ASMR? Hope your weather calms down soon it's freezing here in the UK keep safe Mr Chris dude
Thanks for video Chris
Very interesting one
I like the way ur fine the problem
For is a learning experience
Good job Chris, I like those ladder diagrams, shows you the electrical system how it really works.
Definitely love watching your vids! My only minor complaint is that it would be better to disconnect power prior to spinning the condenser fans. Keep up the great troubleshooting skills! I love how you teach people to proceed in a logical manner. Some people just like to jump to conclusions.
Man yall's voltage sags are crazy in California. The TVA here where am rarely has the power more than 3 volts over/under even in the depths of summer.
all the a/c that runs in the summer
@@nikyjim Sure, but we are cranking the AC's just as hard in the midsouth and pretty much 24/7 from May to late September. We have a lot less people than cali for sure, but we also have a lot less power production. Cali's electric management has been a mess for decades though. Not sure why considering they deal with much less severe weather than most places. There equipment should have very long lives and easy RTE for the power companies. We have had substations here that are less then 5 years old be completely wiped out from tornadoes and the power company has them rebuilt in just a few months.
I have the same condenser here at work, and let me tell you, it's been a struggle, you make it seem so easy
Very helpful and informational as always and much appreciated brotha!
Excellent job as always.your the man.cant wait for another victory repair
Youre great you taught me everything thanks
This was a excellent video today..thanks as always..
I think stuff gets so dry that when you get a bit of moisture all that grit and dust just gabs onto things and it dries. We get that here in the autumn with dry weather after rain - the soil kicks up and gets in the inside of houses and cars in the windows and creates a film. Of course all that stuff has minerals and stuff in it, which can change the chemistry of the condenser coils creating a bit of a layer of schmo the heat has to get through. In the springtime we also get the clogs of pollen which its own fun adventure to clean.
Watching your videos has teached me a few things, and I'm not even going into the HVAC trade, at least planning on it yet. It also reminds me of the systems at my current job.
For example over a month ago one of the rooftop units that gets no love or attention ever failed over a month ago. Management denies it failed, even though the thermostat is calling, it's 79f+ in the store most of the time, and no airflow from the vents. No breaker is tripped and I believe it failed on high head pressure like this one did as it stopped working during a pretty hot week. I can only theorise though.
I see why preventative maintenance is important, but our owners don't care as they are cheapskates. The makeline for example is very dirty where the compressor is, and it has failed before resulting in it needing to be fixed in the middle of the day while we're trying to work.
I enjoy your videos. I have learned a lot from you. Thanks for sharing.
Nice work. God I wish we were super busy. Kind of a shoulder season for us. Not too hot so nothings breaking. And we haven’t started our heating PMs yet. So I’m struggling to find something to do all day. Can’t wait to move south and be busy all the time.
Interesting to see how similar but different your refrigerations systems are over there compared to here In Australia.
I remember those really low voltages when i lived in San Diego....when i lived in Buffalo....absolutely no issues with voltage sags. It was always stable.....here in Austin....its better than California, but not as good as Buffalo. Usually 208v equipment is at worst 201v.....in the morning and in the evening it is a little better. But 195v....is pretty low. It is enough to pull in that contactor. If memory serves me correctly....you can have up to 20% less than the rating and it'll still pull in.
You might want to start investing in Buck Boost XFMR'ers for those really bad areas
Dogs are the best. I have 2 labs- a silver male named Jax and a charcoal female named Mia
awesome job as always, your Manager (your Dog) wants out, you gotta listen to your manager :P
You know? Now that I think about it, the systems that I've had to change compressors on have the same pattern of discoloration on the discharge line. Makes me think that these condensers I have are flooding back bad........now I have a connection and I'm not crazy!
That should be on your merch. 1 2 3 please don't blow up
Was the compressor gettng slugged like what the ring was indicating at the suction line? What was the superheat? Thanks
looks like a great trade -hvacr vocational student
Maybe instead of 3/4 you should try 2/3 or 1/2 on your recivers for your temps.thanks for all your help.
💪❄🇺🇸👍 Great troubleshooting and information thanks Chris.
Sounds like Luke is more eager that your wife got home then you were. Haha. Great video as always.
This crazy heat wave we just had here in So Cal, VC area. We had capacitors go out like crazy. We also had dumb calls on units freezing over due to tenants running equipment set at 68°, had to constantly tell people the equipment was not meant for this high heat.
Also see with heat waves that the employees of the locations will leave the doors to walk-ins open to "cool off". Doh! 😒😒
That's crazy my first service call of the day was for a walk in freezer that wouldn't turn on. Ended up being a bad temp control but nonetheless great video
Did you go digital? Mechanicals suck.
@@Brisket9392 no unfortunately my boss Is old school we only stock mechanical
Love it! Nylog, in NY is called "SNOT". Think about it...LMAO. Luv Ya.
Very niece sir 👍🇮🇳
I wonder if the threading tool for tanks could help you on that bad thread...
The amount of times I’ve heard you explain the viper foam gun is ridiculous at this point I feel like the sales rep 😂😂 love the vids though man i know you gotta say it incase theres new viewers
Nice
Interesting about the sand in the area. I live in MN. Never saw that before. Can you stick filters in front of the condenser?
Question...if the contractors fail so often...why not try solid state relays?
I'm in north Mississippi and we have triple digits coming next week.
Hey , you can't blame dog for loving trophy wife 🤣😅😂 Thx for posting ...
in before the 10 minute crew shows up
True
I'm surprised the contactor pulled in not having the full 208v
There is a minimum voltage that it will still pull it in. A 24v contactor will pull in with as little as 19v. I believe its called pilot duty, which some relays like RIB will state on their relays
One WIC i made and service has 198v line to line 3ph and even one of the lines is almost 10 volts under like 189-190v. How can you give warranty on something like that?
That HPC failed and probably saved that compressor. It probably took some damage, but it still works.
Just bought a hat Chris. Needed one
198 V is pretty low. 208 V system? Usually caused by LONG runs and bad connections. Southern California huh? Misters! Been there done that in MN.
That liquid injection system looks very janky doesn't it?? Also i think the current sensing is just to ensure the compressor does not get a shot of refrigerant when its off but the injection goes off the bi mettallic switch in the discharge line please correct me if i'm wrong.
And i'm trying to find a reason for the suction line check valve and can't find one. I do install discharge check valves in scrolls that have to pumpdown but the suction i don't get it...
That line voltage seems too low
Where does checking the condensor fan motors' starting caps fit into your checks?
Is 195 all you guys get on a 208v service? That's terrible
That is 5%. Marginal. BUT that was No Load. Once the comp starts, it is going to be even lower. The utility should re-tap the transformer
If it isn't broke don't fix it, that original contactor looked perfectly fine.
Didn't listen to outro so apologies if this was answered: Why was the receiver and compressor hot if the HP peanut switch was bad?
Edit: ambient temp tricked you into thinking it had been running?
So this is like what you call a final heatwave and than it will cool off right ?
👍
is that can going into the compressor the f/o metering device? or a filter drier just before metering? May be a dim question.... but it IS a question lol.. yep, confirmed. it's 100%a question
by the way yours vids are just golden. Keep it up. U rock
Hey there
You put you hand on compressor and said it was hot....then put your hand on liquid receiver and said "This condenser is hot"....do you guys in the States call it a condenser? Cheers. Trev Australia
Whens the last time something has blown up? Sounds personal 😅
I thought having a schrader on a high pressure switch was taboo!
❤
Start keeping dog treats in your room, he will be real attached - or at least that's how my dog works :)
Dang my line voltage is always above the rated voltage and doesnt dip one bit with heavy loads.
What is California doing???
What about the air in the brand new pressure control? Too little to be of concern?
No way for it to make it into the system. It's such a little amount if it did but those lines should always be under positive pressure. Only way is if suction control was cutting out too low (in vacuum) which isn't good for many reasons. High side will never. Nonetheless, no way to purge those lines.
👍👍👍👍👍👍👍👍👍
👍🏻
So what about the clamp lol
Above 100 for two weeks, sounds pretty awful. Seek shade and hydration.
Another One....
Being on-call, you have to be vigilant about all the systems the customer has operating. It's such a sting when you walk into your living room, just to be paged to return to a site you just spent 10 hours at over something silly.
Cut that HPS open to look at the contacts
When in doubt jump it out!
Fuck all these boards lol
Dude… I know you did it super carefully, but touching the fan blades with your bare finger without turning off the disconnect, VERY unlikely they could have started, but still possible, especially when dealing with auto reset high pressure switches, it’s definitely a bad habit.
You cant be rinsing off the roof like that
Gavin is watching you sir!!!!
Jk
Channel should be renamed to "SUNDAY CALL HVACR VIDEOS"
Why not just use one cleaner?
Auto-reset HPCOs are dumb. If the coil is that dirty, it needs to be cleaned. If fan cycle isn't functioning, it needs to be replaced. If condenser fan motor is dead, it needs to be replaced. Don't understand why auto-resets are put on these units when a HPCO event will never fix itself. Just a good way to smoke a contactor or compressor until someone gets on the roof.
223 Thumbs uP
Uno
4th
Maybe Newsom disabled their thermostat... 🙄
How do you know it is not the low pressure control? All the switches are in series like Christmas light string. Any one of the OTHERS could be open & you would see zero V on the low pressure control regardless whether it is open or closed.
I note that despite having 3 phase power, the fan motors are 1 phase (capacitors are there).
Comment about cleaning: the water flow should go in the reverse direction that the air goes, so you don't push the dirt further into the condenser (I assume the fans pull the air through the condenser). You also need to clean the blades. Manufacturers make it hard to access both sides of the condenser. Those fans should be set on hinges (with the wiring passing over the hinge axis to not interfere with opening).
Brian See the 5:00 mark for schematic lesson.
Closed switch will show 0 volts across the contacts.
You need to pay closer attention. He actually went over that very very thoroughly.
Time to go back to basic electrical class. After that, visit a coil cleaning seminar.
@@davejohnsonnola7908 Closed switch will certainly show 0 volts across the contacts. But an open one will also show 0 volts across its contacts if there is another open one in the series circuit (the same as if all power is cut). Schematic lesson is: is ANY switch is open in the circuit, there is NO voltage ANYWHERE in the circuit. So other switches will measure as zero volts across them, even if they are open. If only ONE of the switches is open, you will find it with voltmeter checking across each switch as you describe.
Better way is to put one end of the voltmeter on one end of the circuit (either the neutral or the contactor feed from outside) & probe along the circuit between the switches. When you are all the way across, you should see voltage (if you don't, the cooling unit is not sending it). As you probe along, you will find the first open switch when you move the probe to the other side of the open switch. You can determine the status of the other switches until you fix the open one.
@@kaptaintrips Regarding the electrical class you need to go. In a series circuit, if you have an open ANYWHERE in the circuit, the ENTIRE circuit goes dead! All OTHER switches in the circuit will read zero whether open or closed. Strategy used only works if only ONE switch is open. Murphy's law operates in A/C units. There can be multiple failures!
Regarding coil cleaning, it is common for a film of crud to form on the side of the condenser that the air ENTERS. Spraying water on that side tries to push that crud THROUGH where it ends up causing massive clogging. On some of the newer A/C condenser units, you can't spray water on the condenser AT ALL without risking damaging the electronics.
Ok. This guy uses blue and yellow viper cleaner. Assumming yellow is the aluminum safe stuff. How come he dont just use the yellow cleaner on everything?
The yellow is not as strong as the blue......
@@HVACRVIDEOS neat. Always fun troubleshooting and wondering what caused it as you are explaining what the unit is doing. I also fixed a walk in cooler because of your videos.