Opened a brand new store for the company. First time the heat kicked 'on' the electric heat tape smoked off all the oils and dust while the store was open. Had the fire dept respond, part of the shopping center evac'd... Quite the response! Fire Dept gave us a hard time, and we told 'em to blame the HVAC contractor. They are supposed to dry run the system and do full air balance before we get the occupancy cert. Funny thing? About a month later, Store filled with smoke again... Fire Dept blamed the HVAC again! HVAC company comes out and states "Not us, Everything is MINT as it's a new system and it already flashed off the trash." Seemed to happen every few months until they closed the location a few years later.
Loose belts wear out the pulley. Then wears out new belts when installed. Then the next step is belt dressing. The only proper way is keep the belt properly tightened to prevent worn pulleys and belts stretching from the heat generated by the slippage. You made the exact correct call, replace the pulley and belt. It is great seeing someone with integrity and know how at work.
Every time I deal with any service call I wash your videos as references to help me find an issue that I having a hard time finding, thank you so much for videos
Agreed. If the pulley is adjusted to compensate for the wear, then air balance and motor over-amping will be affected... and I chalk this knowledge up to you Chris! True tradesman and stellar teacher! Thank you very much for the Fieldpiece SC480... It is very sweet
I have found the circuit boards crack around the relay pins where they solder. When I worked on equipment at our church I had several boards fail at the solder connections. Both hot surface and spark ignition versions.
Always check CO after touching a gas burner. Huge liability if you don't own a combustion analyzer at least get a CO analyzer. You can use it on any type of gas equipment. Hot water heaters etc. A must,I can't tell you how many times a year I find a gas burner running incorrectly. Those Lennox units are tough units.
It’s funny I never realized the doors had those jam sticks lol usually after the wind smacks the door in to me like 2 or three times depending on what I’m doing I rip all the screws out of it and throw it on the ground lol
I have gone in behind so many fly-by-night techs that closed down on the pulley to tighten belts. It is extremely frustrating because it causes so many other problems. For one that drove me crazy, the air volume was so high it was sucking the condensate out of the pan and blowing it down the duct
I just fixed an ICP package unit for a friend. It had no ignition from the ignition module. When I unplugged power from the module and put my meter on it, , I had 26 volts. First assumption was bad module. Then I happened to notice during diagnosis that the gas valve was sporadic. After looking at the diagram the power was ran in parallel with the ignition module. Plugged up ignition module and it dropped to 2v. Ended up being an intermittent relay on the control board. Replaced and all has been well for a month or so now. If I hadn't used a big picture diagnosis, I would've replaced the ignition module for no reason. Funny how it would show 26v with no load on the circuit then dropped to 2 with a load.
Those were hands-down my favorite units to work on. Very service friendly, especially when it came to swapping out heat exchangers (I remember how happy I was when I realized they are on a T-track).
@Timothy Salomon I think FerdinandFake was being sarcastic in that with adding a reversing valve and a few sensors it could be a heat pump instead of a combustion emission producing device... maybe I'm reading to much into his comment.
@Timothy Salomon burning gas is propably alot cheaper than the electricity and expensive heatpump components. Just thought it was funny because ive never seen a setup like that. I wonder how the microchannel condenser would react if you hacked a reversing valve and some biflow components in there, considering the climate in cali it might just work without instantly freezing over.
there's not many states/areas a giant crude heat pump would work worth a beans. if there was they'd all be heat pumps :) it;s just too cold in winter in vast majority of their sales areas to even have them as heat pumps.
@@FerdinandFake I don't know about California, but here in Spain it is cheaper to use a heat pump rather than burning gas. It is also not warm, with temperatures between 0 and 10 ⁰C in the coldest months.
I might of missed it but double check for those galvo coated heat exchangers in those older l -series rtus. I've been finding a ton of them rotted out lately
If you blow CO2 or bottled 'air' on a cirquit board you basically are refrigirating it. It probably not failed due to static but due to watervapour condensating and shorting things out.
yep co2 generates huge amounts of static from the friction of dry ice particles created when the liquid turns to gas. pretty much the worst thing to use to clean electronics lol
Interesting, never thought about Exhaust air (Vacuum) and Make up air as something in a building which would effect the pressure in the building. In my Industry, we have tanks that need to be kept at a pressure of around 1 inH20 and that is done by means of "injecting" make-up gas or a controlled valve on a vacuum line to pull down the pressure.
wait a minute there chris is this the same unit that had the popping compressor? i swear you have worked on this unit before anyway great job as always!
I’ve only been on the job about 4 weeks and it’s been nothing but no heat calls, aside from installs. But it gets quite a bit colder up here in the high desert. 😆
Good call on changing pulley but if the belt is loose I always just change the belt, if it’s loose it’s worn out. More than once after tightening a belt I would come back to find it broken.
Basic millwright skills - align and tension your belt drives, and you can go many years in most applications. Those motor mounts in the package HVAC units are flimsy and awkward, and the pulleys look to be low cost items as well, so I don't expect you to get decades out of such a drive, but when you have really good components that are set up well, your limit on life is the elasticity of the belt, and I've worked with machine tools that have gone decades before needing a new belt and the pulleys are just lightly polished. Decades in shops which are not air conditioned spaces. The roof-top exhaust fans are going to cook belts here in SoCal... sunlight plus hot gases from the kitchens will do that. That long life is largely due to a pretty significant difference in quality of the system and alignment, because the belts are the same, and the pulleys aren't hugely better than on these HVAC units.
a ribbed belt and a smothe is messuired diffrently, in sweden alteast. i cant remember if the smoothe is messuerd inside diameter and vice versa on a ribbed belt.
The heat is on, on the street Inside your head, on every beat And the beat's so loud, deep inside The pressure's high, just to stay alive 'Cause the heat is on Oh-wo-ho, oh-wo-ho Caught up in the action I've been looking out for you Oh-wo-ho, oh-wo-ho (Tell me can you feel it) (Tell me can you feel it) (Tell me can you feel it) The heat is on, the heat is on, the heat is on Oh it's on the street, the heat is on
Good video on Monday Chris can you bring in Sheave gauges show how it works and what brand you have thanks wanna purchase them browning is good but, not cheap. Be safe East Coast getting frigid weather be safe!
about the adjusting pully's etc. i've seen stuff like that in most industries. so many tradesman make the error of trying to save the customer a dime, only to have it cost a dollar later on. even with my own work, we probably lost $1000 in production because the boss just "adjusted it" instead of replacing the $10 part.
Be mindful of metal debris when cleaning the unit with a leaf blower. Could potentially cause a short on some electrical components. I know from experience 😎
Changing the width of the drive pulley, will change the amp draw of the motor. Drawing higher than recommended amperage is an excellent way to destroy the motor, but I'm lazy and would rather replace the belt, they're lighter than a motor. Also, if that building had a professional air balancing, changing the pulley's width will toss the air balance right out the window, and that is not saving the customer anything. Funny, but my recent maintenance sweeps at a national sporting goods store have turned up issues on unit#3 at multiple stores. I just cannot turn of the technician part of my brain to just change filters🤷♂️ Great video as always.
Personally, I’m not a fan of tightening belts. If I didn’t change it within the last year or so and it’s loose then I’m going to replace it. Great call though. I have replaced a handful of those ignition modules this winter
I would much rather 5* than the 120* he talks about in the summer. I'm in Denver Colorado BTW, 5* is to be expected but in the summer 95* is a high normal of course probably around 30%RH
A piece of string works better than a straight edge for pully alignment. It doesn't take up any room in the tool bucket either. Breeze Mechanical. I just stumbled upon your channel.
that's a problem, best you can do is check the motor run current isn't too high with belt properly adjusted, but that doesn't tell you if the building air balance is correct :)
Considering the board is grounded I'm kinda shocked that static took it out especially running co2 for a blow out its more the plastics like the stuff running down hose aka like when we run sanders on vacuums for dust collection like don't get me wrong I've seen main boards on inverter welders main boards when working on them being taken out when doing a board swap but that's uncommon honestly grounding strap to you while blowing it out in the worst case but my area isn't quite as dry as your area
Question Why don’t they use reverse cycle in the States instead of having a gas burner system ? I work in Melbourne they do have a few here but not many 🤔
you mean "heat pump", that would only work efficiently in some of the warner climate areas. other areas it would be constantly frozen up and needing to defrost after very short run cycles.
Replace pulley's? Absolutely! And don't adjust the pitch. You'll screw up the customers air balance. Wish we had no no heat calls. Glad I am retired Setting a ladder on snow and Ice going up on a roof with 18" of snow on it and the wind blowing. Not fun
service outlet for work/repair, likely it's just one leg of the 208V 3 phase, which would provide common 120V to neutral single phase power ;) obviously the unit would need fed with 4 wire conductors(plus ground) so it has a neutral. I didn't pay attention that it was 3-phase unit, but I'm sure it is without going back to look :)
Wow this is the first time getting to the "H" in HVAC!
Many dont realize that the "H" actually stands for "How did I get roped into this disaster"
Right. High.
That's Southern California for yah lol
Help!
@@labombao7725 Beat me to it! ;)
I can just smell the hot burning dust..
Every time we start up our furnace in our house(for the first time in the season) it smells like burning
Opened a brand new store for the company. First time the heat kicked 'on' the electric heat tape smoked off all the oils and dust while the store was open. Had the fire dept respond, part of the shopping center evac'd... Quite the response! Fire Dept gave us a hard time, and we told 'em to blame the HVAC contractor. They are supposed to dry run the system and do full air balance before we get the occupancy cert.
Funny thing? About a month later, Store filled with smoke again... Fire Dept blamed the HVAC again! HVAC company comes out and states "Not us, Everything is MINT as it's a new system and it already flashed off the trash." Seemed to happen every few months until they closed the location a few years later.
Loose belts wear out the pulley. Then wears out new belts when installed. Then the next step is belt dressing. The only proper way is keep the belt properly tightened to prevent worn pulleys and belts stretching from the heat generated by the slippage. You made the exact correct call, replace the pulley and belt. It is great seeing someone with integrity and know how at work.
No heat call in California That's a good one! Great job! I agree when a pully is worn out time to replace it!
Yeah,That is a "HOT" one!
10:22 quick way to check for spark on those modules is pull the gray ignitor wire off and use a flat head screwdriver close to the pin to see the arc
It took 3 weeis for our Hvac company to fix our no heat problem. Fantastic company
Up here, 59 in the kitchen in January is a win! lol 😂
Shit, we used to turn the pizza ovens on if the heater couldn't keep up, it'd be 70-75f in no time. Haha
Every time I deal with any service call I wash your videos as references to help me find an issue that I having a hard time finding, thank you so much for videos
Agreed. If the pulley is adjusted to compensate for the wear, then air balance and motor over-amping will be affected... and I chalk this knowledge up to you Chris! True tradesman and stellar teacher! Thank you very much for the Fieldpiece SC480... It is very sweet
I have found the circuit boards crack around the relay pins where they solder. When I worked on equipment at our church I had several boards fail at the solder connections. Both hot surface and spark ignition versions.
when that happens, it's most always due to relay contacts failing, which causes excess heating and expansion/contraction of the solder joint.
Love your explanation on each issue that is causing the problem and trying to resolve it
Always check CO after touching a gas burner.
Huge liability
if you don't own a combustion analyzer at least get a CO analyzer. You can use it on any type of gas equipment.
Hot water heaters etc.
A must,I can't tell you how many times a year I find a gas burner running incorrectly.
Those Lennox units are tough units.
It’s funny I never realized the doors had those jam sticks lol usually after the wind smacks the door in to me like 2 or three times depending on what I’m doing I rip all the screws out of it and throw it on the ground lol
The ignition part was really cool, thanks for the great videos as always!
I have gone in behind so many fly-by-night techs that closed down on the pulley to tighten belts. It is extremely frustrating because it causes so many other problems. For one that drove me crazy, the air volume was so high it was sucking the condensate out of the pan and blowing it down the duct
I will discuss this on my Livestream this evening 2/1/21 @ 5:PM (pacific time) on UA-cam ua-cam.com/video/3FcefEaLBCc/v-deo.html
I have the binnie and just purchased the hoodie!
Thanks so much for the support bud!!
Bet the return is too close to a stove so the detector is covered in grease, seen that happen multiple times with kitchens
You have a great eye ball Chris don't let anyone say otherwise
I just fixed an ICP package unit for a friend. It had no ignition from the ignition module. When I unplugged power from the module and put my meter on it, , I had 26 volts. First assumption was bad module. Then I happened to notice during diagnosis that the gas valve was sporadic. After looking at the diagram the power was ran in parallel with the ignition module. Plugged up ignition module and it dropped to 2v. Ended up being an intermittent relay on the control board. Replaced and all has been well for a month or so now. If I hadn't used a big picture diagnosis, I would've replaced the ignition module for no reason. Funny how it would show 26v with no load on the circuit then dropped to 2 with a load.
Those were hands-down my favorite units to work on. Very service friendly, especially when it came to swapping out heat exchangers (I remember how happy I was when I realized they are on a T-track).
We have this giant heatpump, lets add a burner to it in case we want to heat something.
@Timothy Salomon I think FerdinandFake was being sarcastic in that with adding a reversing valve and a few sensors it could be a heat pump instead of a combustion emission producing device... maybe I'm reading to much into his comment.
@Timothy Salomon burning gas is propably alot cheaper than the electricity and expensive heatpump components.
Just thought it was funny because ive never seen a setup like that. I wonder how the microchannel condenser would react if you hacked a reversing valve and some biflow components in there, considering the climate in cali it might just work without instantly freezing over.
there's not many states/areas a giant crude heat pump would work worth a beans. if there was they'd all be heat pumps :)
it;s just too cold in winter in vast majority of their sales areas to even have them as heat pumps.
@@FerdinandFake I don't know about California, but here in Spain it is cheaper to use a heat pump rather than burning gas. It is also not warm, with temperatures between 0 and 10 ⁰C in the coldest months.
Thanks for sharing all your videos with us.
I might of missed it but double check for those galvo coated heat exchangers in those older l -series rtus.
I've been finding a ton of them rotted out lately
Good video Chris ,good pointers on the pulleys👍
01:26 snow on the mountains in the background. No wonder they needed heat!
They are pretty aren't they
@@stellr88 Yes, I saw that...
pro-tip for testing ignitors, try the 9-volt on the tongue trick.
Awesome Chris! Love to see more no heat calls!
Cooks: Bake in the kitchen
Chris: Bake the kitchen
If you blow CO2 or bottled 'air' on a cirquit board you basically are refrigirating it. It probably not failed due to static but due to watervapour condensating and shorting things out.
Wow, we been running no heat calls in Central California for a couple of months. Winter arrived late for you guys down there.
First no heat?! Man yall got it good😂 high was 19* F today for us lol
Glad u are fine ! happy new year and stay safe :D
On the first stage you really don't want blow back with all those wires so close. Great job again.
Good call.
Gas pressure, temp rise,hx inspection and a co test.
I find many out of mfg. w/c range.
yep co2 generates huge amounts of static from the friction of dry ice particles created when the liquid turns to gas. pretty much the worst thing to use to clean electronics lol
don't forget about the "speed" of the flowing gas. high pressure in small area = higher speed/friction and more static generation
Eye-crometers are great when nothing else works, like a straight edge.
I literally thought they hung curtains in the filter housing..
Damn almost February and First no heat. I sometimes miss Cali weather. It was 11° today and supposed to be 8° tomorrow. With a fresh 6" of snow.
Ive had a few no heat , I mainly do residential. Waiting for that summer $!
Another great video Chris keep safe dude
So this is the start of your heating season wow
Yeah it will last a few weeks
@@HVACRVIDEOS oh wow and you get your rainy season now ?
I agree with you about those sloppy filters. I’ve cleaned up after “filter jockeys” many times. They just don’t get it.
Love the videos, great help while I am learning how to do this line of work!
Live in NorCal. So many condensing furnaces in my area. Condensate issues all day every day!
Interesting, never thought about Exhaust air (Vacuum) and Make up air as something in a building which would effect the pressure in the building. In my Industry, we have tanks that need to be kept at a pressure of around 1 inH20 and that is done by means of "injecting" make-up gas or a controlled valve on a vacuum line to pull down the pressure.
Good job.
VTEC just kicked in, yo!
Love it buddy!!
Man i miss the mountains.
Amazing 👍👍👍
Guess you have one of those calibrated eyeballs!
I've only seen you do AC, glad to see some heater troubleshooting!
wait a minute there chris is this the same unit that had the popping compressor? i swear you have worked on this unit before anyway great job as always!
No I just used the same thumbnail
I’ve only been on the job about 4 weeks and it’s been nothing but no heat calls, aside from installs. But it gets quite a bit colder up here in the high desert. 😆
Good call on changing pulley but if the belt is loose I always just change the belt, if it’s loose it’s worn out. More than once after tightening a belt I would come back to find it broken.
The way you beat up the thingy
lol
The 44l5901 is toast need a 44w96. I replace lots of those!
12:40 SHEAVE god dammit!!!!!! LOL
Ha ha
Basic millwright skills - align and tension your belt drives, and you can go many years in most applications.
Those motor mounts in the package HVAC units are flimsy and awkward, and the pulleys look to be low cost items as well, so I don't expect you to get decades out of such a drive, but when you have really good components that are set up well, your limit on life is the elasticity of the belt, and I've worked with machine tools that have gone decades before needing a new belt and the pulleys are just lightly polished.
Decades in shops which are not air conditioned spaces. The roof-top exhaust fans are going to cook belts here in SoCal... sunlight plus hot gases from the kitchens will do that.
That long life is largely due to a pretty significant difference in quality of the system and alignment, because the belts are the same, and the pulleys aren't hugely better than on these HVAC units.
cheap cast iron for sure and loose belts means more slippage and faster wear for sure
Like it when someone changes for motor and gets it all crooked on the mounting plate.
a ribbed belt and a smothe is messuired diffrently, in sweden alteast. i cant remember if the smoothe is messuerd inside diameter and vice versa on a ribbed belt.
The heat is on, on the street
Inside your head, on every beat
And the beat's so loud, deep inside
The pressure's high, just to stay alive
'Cause the heat is on
Oh-wo-ho, oh-wo-ho
Caught up in the action I've been looking out for you
Oh-wo-ho, oh-wo-ho
(Tell me can you feel it)
(Tell me can you feel it)
(Tell me can you feel it)
The heat is on, the heat is on, the heat is on
Oh it's on the street, the heat is on
Ain't gonna fall for no banana in my tailpipe.....
lmao!
Another awesome video
Good video on Monday Chris can you bring in Sheave gauges show how it works and what brand you have thanks wanna purchase them browning is good but, not cheap. Be safe East Coast getting frigid weather be safe!
about the adjusting pully's etc. i've seen stuff like that in most industries. so many tradesman make the error of trying to save the customer a dime, only to have it cost a dollar later on.
even with my own work, we probably lost $1000 in production because the boss just "adjusted it" instead of replacing the $10 part.
I thought i woulsnt see a heat video on this channel again because where you work at great vid
More heat pump vids please!
I work on PTAC units the whirlpool ones are usually the pain in the butt
Nice video
It’s not eyeball Chris it’s your laser eye vision 😉
Always Check The Heat Exchangers...Its An Issue Here In Midwest...
Be mindful of metal debris when cleaning the unit with a leaf blower. Could potentially cause a short on some electrical components. I know from experience 😎
Chris you need to move to New Jersey to get the heat calls!! LOL!!
Chicago is always looking also
@@kenji369 YES!! More than New Jersey!! lol
was going to order a t-shirt but no international shipping sadly .
Changing the width of the drive pulley, will change the amp draw of the motor. Drawing higher than recommended amperage is an excellent way to destroy the motor, but I'm lazy and would rather replace the belt, they're lighter than a motor.
Also, if that building had a professional air balancing, changing the pulley's width will toss the air balance right out the window, and that is not saving the customer anything.
Funny, but my recent maintenance sweeps at a national sporting goods store have turned up issues on unit#3 at multiple stores. I just cannot turn of the technician part of my brain to just change filters🤷♂️
Great video as always.
Cockeyed, now there’s a phrase you wonder about the derivation of. Some geezer that didn’t take his spirit level to work one day and improvised.
Ha ha yeah I have no idea where their mind was at when they coined that phrase.....
Personally, I’m not a fan of tightening belts. If I didn’t change it within the last year or so and it’s loose then I’m going to replace it. Great call though. I have replaced a handful of those ignition modules this winter
Man some frost, sounds horrible. It was 5 on my way to work the other morning.
I would much rather 5* than the 120* he talks about in the summer. I'm in Denver Colorado BTW, 5* is to be expected but in the summer 95* is a high normal of course probably around 30%RH
A piece of string works better than a straight edge for pully alignment. It doesn't take up any room in the tool bucket either. Breeze Mechanical. I just stumbled upon your channel.
I’ve done 15 over the last day & 1/2
I find it a little hard to believe that a working commercial kitchen could be that cold...even in these times!
yessss
Do you ever replace adjustable pulleys with fixed pulleys?
Amazing work as always thanks for the content stay safe and take care
Us techs here in Michigan envy your lack of no heat calls lbvs
I’m in pa and winter is getting ready to end but apparently it’s just moving job locations
Ready to end??? Shit it’s gona be cold for like the next two weeks and snow in the forecast here in Pittsburgh
@@kenb1918 it started to snow like 10min after I posted this
Whoa live in Lancaster man know this is late but got snow storm after snow storm here
Can I be your apprentice? This is quality content 😅
So did you lube the bearings on the blower shaft? All four? Big pitcher!!!! Did you fix the filters??
So if your not suppose to adjust the pulley but a previous tech(s) did adjust it how are you suppose to know exactly the width opening of the pulley?
that's a problem, best you can do is check the motor run current isn't too high with belt properly adjusted, but that doesn't tell you if the building air balance is correct :)
must be at 100 this year... quebec
with proper alignment and tension a pulley should last around 5 years of continuous use if memory serves correct
Considering the board is grounded I'm kinda shocked that static took it out especially running co2 for a blow out its more the plastics like the stuff running down hose aka like when we run sanders on vacuums for dust collection like don't get me wrong I've seen main boards on inverter welders main boards when working on them being taken out when doing a board swap but that's uncommon honestly grounding strap to you while blowing it out in the worst case but my area isn't quite as dry as your area
Do the negative pressure correct after you fixed the unit?
Yes
Chris what’s the model of then flashlight you carry?
Question
Why don’t they use reverse cycle in the States instead of having a gas burner system ?
I work in Melbourne they do have a few here but not many 🤔
you mean "heat pump", that would only work efficiently in some of the warner climate areas. other areas it would be constantly frozen up and needing to defrost after very short run cycles.
So, is that sheave intended to be a pressure clutch?
Wouldn't grounding yourself have prevented that from happening with the CO2 can? Personally, I don't touch the inside of my computer without doing so.
Nice😏😪
Stay safe.
Retired keyboard super tech.
Wear your safety glasses.
Replace pulley's? Absolutely! And don't adjust the pitch. You'll screw up the customers air balance.
Wish we had no no heat calls. Glad I am retired
Setting a ladder on snow and Ice going up on a roof with 18" of snow on it and the wind blowing. Not fun
Do you use an rpm scanner that has a laser to check the speed?
Love the videos!!
with lennox h01 will turn on both sides
Why is there a 110 outlet inside the unit. and is there a inverter for 110? I’ve always wondered
service outlet for work/repair, likely it's just one leg of the 208V 3 phase, which would provide common 120V to neutral single phase power ;)
obviously the unit would need fed with 4 wire conductors(plus ground) so it has a neutral.
I didn't pay attention that it was 3-phase unit, but I'm sure it is without going back to look :)