Tech for 20 years, I took a bad gas valve out last week and put the bad valve right back in to find a bad gas valve again. Realized that I put the bad one back in pretty quickly but it definitely happens to the best of us. Good stuff
It's also good practice to check to both ground and neutral in a 120v circuit. Sometimes a neutral will be damaged and not allowing enough voltage to power the equipment.
Nicely put Bert. I've done everything I can think of to invite new techs to ask questions if they don't know the answer. I'm disappointed regularly when they call me in a panic after making a bad diagnosis and prove that they don't understand electricity or how to use their meters.
Good info I work industrial maintenance and agree with everything you said *but* on initial safety check of voltage potential I always use a no contact tester or tone stick. A multimeter requires a completed circuit for a proper reading and if you had say a broken neutral bus bar or maybe a open path to ground the meter won't show anything. Possibly if your equipment is energized with no path to make a completed circuit your body will make it completed...
I’ve been a tech for 15 plus years and last week I accidentally replaced a high voltage 2-pole contactor with a multi tap step down transformer. It happens to the best of us.
I've showed this to a guy this who would have gotten shocked. He became my manager because of politics and then tried to get me fired. Some scared of those that know more than them. Not saying this will always happen but sometimes I've regretted teaching some people. I've never found this to be an issue in the trades, guess there's honor amongst some guys. This was at a corporate retailer working maintenance. Watch yourself in other environments.
On the Lennox that had 24V to ground on both sides of the contactor, that should be a red flag. One side of that contactor should be hot/load and the other common/ground. Therefore checking to ground on one of the legs should be 0V and the other 24V on a properly energized contactor, correct??
Yes if it is properly energized it will pull in and have 24v to ground on one side and 0v to ground on other. But this board when in a lock out will allow the 24v path to contactor but break common path back to common. So on that situation contactor would not pull in because voltage would not be flowing. And it will show 24v to ground on both sides of contactor
Good video. Bert gets it.
Tech for 20 years, I took a bad gas valve out last week and put the bad valve right back in to find a bad gas valve again. Realized that I put the bad one back in pretty quickly but it definitely happens to the best of us. Good stuff
They are fortunate to have such a good lead techs and leadership who are always being willing to educate. Good stuff.
More of these videos please. Extremely informative. Well done Bert!
It's also good practice to check to both ground and neutral in a 120v circuit. Sometimes a neutral will be damaged and not allowing enough voltage to power the equipment.
Nicely put Bert. I've done everything I can think of to invite new techs to ask questions if they don't know the answer. I'm disappointed regularly when they call me in a panic after making a bad diagnosis and prove that they don't understand electricity or how to use their meters.
HVAC is pretty cool, nice mix of technical skills rolled into one job.
You guys are great. Love the community and the videos. Great content. Such a great trade. Frustrating at times, but very rewarding
Great training Bert!
Beautiful discussions bert.
Thanks Bert, great lesson 👍🏻🛠
Good info I work industrial maintenance and agree with everything you said *but* on initial safety check of voltage potential I always use a no contact tester or tone stick. A multimeter requires a completed circuit for a proper reading and if you had say a broken neutral bus bar or maybe a open path to ground the meter won't show anything. Possibly if your equipment is energized with no path to make a completed circuit your body will make it completed...
Good stuff Bert. Tell Bryan to let you do more.👍
I’ve been a tech for 15 plus years and last week I accidentally replaced a high voltage 2-pole contactor with a multi tap step down transformer. It happens to the best of us.
I want this guy to work on my HVAC system
I've installed old parts before that's embarrassing once you find out after troubleshooting.
I've showed this to a guy this who would have gotten shocked. He became my manager because of politics and then tried to get me fired. Some scared of those that know more than them. Not saying this will always happen but sometimes I've regretted teaching some people. I've never found this to be an issue in the trades, guess there's honor amongst some guys. This was at a corporate retailer working maintenance. Watch yourself in other environments.
On the Lennox that had 24V to ground on both sides of the contactor, that should be a red flag.
One side of that contactor should be hot/load and the other common/ground. Therefore checking to ground on one of the legs should be 0V and the other 24V on a properly energized contactor, correct??
Yes if it is properly energized it will pull in and have 24v to ground on one side and 0v to ground on other.
But this board when in a lock out will allow the 24v path to contactor but break common path back to common. So on that situation contactor would not pull in because voltage would not be flowing. And it will show 24v to ground on both sides of contactor
Umm the contactor pulls in and BOOM. Line in Load out
At-a-boy Bert 😎👍
Electricity is like water, it has to go somewhere. If you’re getting voltage at the beginning, but not the end, find the dam.
Thermodynamic Man 👨🏽
You don't know what you don't know
Live Dead Live test evey time
Emo Bert
....is bert sad lol