Using the hopscotch method of troubleshooting a high voltage electric heater circuit. You can use this method on high or low voltage and it works!
Пікірлер: 117
@aridematos35556 ай бұрын
Damn John.....The best explanation and straight forward
@dgonzo222 Жыл бұрын
2nd year apprentice, learned basic fundamentals on the job, but your videos have made everything click. Kudos on the electrical troubleshooting. Would be lucky to work for somebody like you. THANK YOU
@johnjennings487 Жыл бұрын
Thank you. Sometimes it is hard to say things so everyone is on the same page but if it helps you then I am glad to hear.
@TheMaster51503 ай бұрын
Though I like hopscotching with ground, this is helpful to others in understanding how potential differences work.
@tomn48388 ай бұрын
Its the heating season again. I am a Facilities Technician troubleshooting air comfort complaints or heading off complaints if I see heating Setpoints not being satisfied. Thanks for the hopscotch method. Self study has always been my go to in building the skill set. Good short tutorial.
@johnjennings4878 ай бұрын
Thanks. Somebody showed me so this is just passing it along.
@johnnyriser851915 күн бұрын
That's Great!!!! Thank you so much for the explanation. You make it sooooo plain!!!
@littleshopintheshed7 ай бұрын
Very helpful and clear video. I wish I had that confidence with electrical. Got hit with 220v one day because my meter said the lines were dead, been gun shy ever since.
@johnjennings4877 ай бұрын
I saw someone ...a "friend"...do that to but when I looked at his meter I noticed his leads were pushed all the way into the meter. Terrible...just terrible.
@joeatx45642 жыл бұрын
I appreciate it man I can watch this video all day.
@johnjennings4872 жыл бұрын
Thanks. I appreciate it.
@MrRalph438 Жыл бұрын
Getting very proficient using my mult-imeter with your videos. Thank You. Keep Posting.
@genalisseabreu2569 Жыл бұрын
Wow! Thank you very much. That was an excellent explanation. Very clear.
@johnjennings487 Жыл бұрын
Best way to troubleshoot any circuit in my opinion. Thanks for watching.
@MrOakpark Жыл бұрын
Thanks for the hopscotching video. You do a good job with explaining the concept. I would enjoy more of these type videos. I mainly do work on down flow mobile home air handlers and furnaces. Thanks
@johnjennings487 Жыл бұрын
We are looking to get some more of those style units and if so then I would try to out something out on it. Everybody has their own way of troubleshooting but once I got the hang of the hopscotch it really helped me. Thanks for commenting.
@JuanSanchez-nn1db Жыл бұрын
Thank you so much for the explanation Great video
@boopernator2 жыл бұрын
Nice video, a good refresher for me. I don't work on many electric heat systems but I do work on electric water heaters. This method will make my next electric water heater diagnostic much easier.
@johnjennings4872 жыл бұрын
Thanks. A circuit is a circuit! I tell some younger guys that the electric water heater is an electric furnace...just no blower. I try to make it easy to relate to what they know so they are less freaked out by "something new".
@jparson3309 Жыл бұрын
Great job of explaining Very glad KZbin suggested I would like 😊
@johnjennings487 Жыл бұрын
Thank you
@chesstime356 Жыл бұрын
Great job I watched this video many times
@johnjennings487 Жыл бұрын
I tell people all the time that this method is the best way.
@zambalic15 ай бұрын
Excellent presentation.
@jrjr17223 жыл бұрын
Great Tutorial Definitely will follow more videos thank you
@johnjennings4873 жыл бұрын
Thank you.
@dwaynegordon610 Жыл бұрын
Thank you! Help me out alot!
@cenricocustoms64899 ай бұрын
Thank you so much! Love this video!
@johnjennings4879 ай бұрын
Thank you
@rahulmanohar4114 ай бұрын
Very informative 👏👏
@MrRalph438 Жыл бұрын
Great information. very helpful.
@corruptedbrain68 ай бұрын
amazing job !
@simmonsjr253 жыл бұрын
Awesome video. Thanks for sharing.
@johnjennings4873 жыл бұрын
You bet. I am trying to get you there.
@prettycureforever71023 жыл бұрын
Wish my school had this. Time to take notes
@johnjennings4873 жыл бұрын
Thanks for watching. You only need a few notes. Once you got it, you got it..if you have any questions I'll try to help.
@airmechanical71633 жыл бұрын
Excellent video!
@johnjennings4873 жыл бұрын
Thank you.
@stevencarrillo36152 жыл бұрын
Hi there and that had helped me become a better technician.
@johnjennings4872 жыл бұрын
Thanks. That is good to hear. We should all want to get a little better because there is always something to learn.
@johndoe-wt4ui Жыл бұрын
Thank you
@nakiapringley53912 жыл бұрын
Great video brother 💯💯💯💯💯
@johnjennings4872 жыл бұрын
Thank you.
@lajuanjohnsonbtc96342 жыл бұрын
Thank you for this video. Your explanation was the simplest I have found. Can you make videos showing the other methods?
@johnjennings4872 жыл бұрын
Awesome. I'll try to put more out on other methods. I prefer the hopscotching...is there one you like/heard of you would like to see?
@lajuanjohnsonbtc96342 жыл бұрын
I'm new to hvac. Anything you upload explaining troubleshooting methods & how multimeters work is cool with me.
@johnjennings4872 жыл бұрын
I'll try. Stick with it and learn what you can. There are a lot of resources out there. Lots of potential.
@TalentNetworked Жыл бұрын
Thanks so much
@johnjennings487 Жыл бұрын
Hopscotching is the way to go. Thanks for checking it out.
@marshallstephens73562 жыл бұрын
Thanks man!
@johnjennings4872 жыл бұрын
Thanks for checking it out.
@jay863betta3 жыл бұрын
I Subscribed!!!
@johnjennings4873 жыл бұрын
Thanks.
@mr.fixdaplate3 жыл бұрын
Jst subscribed to channel great job
@johnjennings4873 жыл бұрын
Thanks.
@Eddy633 жыл бұрын
Couldn't of done it better ... Lol ... Great tutorial ...
@johnjennings4873 жыл бұрын
Appreciate it! It isn't terribly hard to do once you get it.
@gods959 Жыл бұрын
Great video Blessing and more blessings to you and your family in Jesus name Amen ❤️🙏
@joseph-ine4527 ай бұрын
Interesting.
@gods959 Жыл бұрын
Bruh 👍❤️❤️❤️❤️❤️❤️ Big Respect 🙏 Blessing and more blessings to you and your family in Jesus name Amen
@johnjennings487 Жыл бұрын
Thank you. We are, have been, and will be blessed as I hope you are too.
@HsingSun2 жыл бұрын
Thank you for your video. If I have a outdoor unit, then the air-handler will be different than this video, right?
@johnjennings4872 жыл бұрын
A little bit different but the same principles apply.
@yaseenhashim85382 жыл бұрын
awesome
@johnjennings4872 жыл бұрын
Thanks
@jasonhewitt7614 Жыл бұрын
Can you do a video showing the hopscotch method tracing from a terminal block to the loads , switches etc? Great videos
@johnjennings487 Жыл бұрын
I got a couple of videos with different relays and go through some of them doing voltage checks but I am working on another one where I will do that...
@jasonhewitt7614 Жыл бұрын
@@johnjennings487 thank you, your videos are very helpful
@garywebb98182 жыл бұрын
When checking across the contactor and again at the high limit with your lead on L2 is the meter actually showing power from L1 ( both legs) and when checking the heat element across from the high temp. limit isn't the meter showing L2 to L2. May be over thinking it or really don't get it. I thought L1 to L1 or L2 to L2 would read "0".
@johnjennings4872 жыл бұрын
Sorry...been night fishing lately. Yes. When i first started and kept the lead on L2, I was checking the L1 side up to the circuit entering the element. Once I hit the element, I had to switch the stationary lead from L2 to L1 to get a voltage reading. Just like you said...L1 to L1 would be '0' since it is the same side of power. Likewise with L2. This one short vid was just trying to show how you could do the hopscotch method. The readings could change due to an open hi limit, fusible link, etc. I hope this helps, I don't want to confuse.
@sinnerface1 Жыл бұрын
on a Goodman model# MBR1200AA-1AA all electric furnace only, one in awhile(usually the middle of the night) the blower will not kick on but element lights...I have to shut breaker(on-off switch at bottom of unit) OFF ,wait 5 mins till a light click is heard, then switch power back on and PRESTO! is it the sequencer or fan relay?? TY in advance!
@johnjennings487 Жыл бұрын
I would have to say that if the electric strips are on and the blower isn't that it would seem like the fan relay/board is the issue. I have never come across this particular model but i don't see how it is any different than a regular Goodman air handler that I have in the shop.
@chenchris7576 Жыл бұрын
Hai john I question confusing me, when we recovery system to a recovery tank, it’s same time we recovery the refrigerant oil to the tank , can we reuse the refrigerant on the recovery tank to another system? Thank you 😊
@johnjennings487 Жыл бұрын
A lot of guys do reuse it or sell it to another customer. You can discuss EPA regulations for the US but I don't need to. Plenty of that information online. I look at it this way...I am not going to take a chance of putting a mixed refrigerant or acid into someone else's system. One company I worked for had a simple rule, no exceptions...once I take it out of a unit it goes to the reclaiming station or turned in at a local part supplier. Let them recycle and reclaim the used refrigerant so it is right. Good question. Thanks for asking..
@chenchris7576 Жыл бұрын
Thank you 👏👏👏
@johnjennings487 Жыл бұрын
No problem. Just my 2 cents worth!
@user-py1vu6vo6s11 ай бұрын
I have a 5 Ton Goodman package unit. Model #GPH16M series Blower motor contactor stays on even when I disconnect all thermostat wires from TB1.. The contactor will release when I turn off power from the unit.
@johnjennings48711 ай бұрын
Sorry for the late reply but got caught up with work. I tried to look at a wiring diagram for the 5 ton model and it looks like you have an x13 blower motor. I have yet to see this model personally but I do know that the x13 motor has high voltage power on it at all times and relies on a low voltage signal to run. If your blower motor is running constantly, it may be an issue with the blower motor module itself. You would have to get in there and do some voltage checks. I wonder why they even have a blower motor relay except for maybe a commercial application where you would need to cut off the blower during a fire/smoke situation.
@user-py1vu6vo6s11 ай бұрын
@johnjennings487 ok thanks for your help I'll check it and let you know
@jeffblakey52232 жыл бұрын
So you're testing with the contactor open or disengaged ?
@johnjennings4872 жыл бұрын
I think for that one I had to heat turned on so the contactor should have 24 volts from the t'stat, closing the switch, and passing power to the electric strip heater.
@jeffblakey52232 жыл бұрын
Okay I watched it again, and you went straight across from L1 instead of L2 which thought you went straight across from. You did a fine job, I should have watched it twice before commenting. Thanks
@johnjennings4872 жыл бұрын
No worries. I hope it makes sense and I didn't mess up on checking/explaining.
@jesse53142 жыл бұрын
What other methods can I use to troubleshoot electrical circuits?
@jesse53142 жыл бұрын
Or would this be the best method?
@johnjennings4872 жыл бұрын
I like this method more than any other. It took me a while to realize that there are 2 legs of power feeding our circuits and that if i prove power using that main power source then i am better off. Some guys put one lead to ground when checking circuits. I think a lot of others just don't know what to check sometimes. This is just the way I feel is the best.
@user-bj8ke7zx1z7 ай бұрын
what voltage is the coil? No voltage to coil no activation.
@MichaelOrona-og4ww5 ай бұрын
Can this work on any Air Handler Brand ?
@johnjennings4875 ай бұрын
Should be able to use this method on really anything.
@ranimouf Жыл бұрын
If you have 209 v on each end of the heat strip, then it should be on. How does it turn on? I thought it turns on when it has 209 v going into it.
@johnjennings487 Жыл бұрын
Tell me minutes/seconds in the video you are referring to and I can better answer
@ranimouf Жыл бұрын
@@johnjennings487 ,the question is simple. You tested the power on each end of the heat strip and you got 209v at 6.39 and the heat strip was off. Wien the heat strip is off , and if you test the power on each end of the heat strip, should you get 120v or 240v because if you get 240v it should be on and hot Thanks
@johnjennings487 Жыл бұрын
I think we are on the same side but dancing around each other... The heat strip was on for this video pretty much from the 1 min mark. Yes...I did check at the actual terminal ends of the heater and got 209v while it was running. If i had shut it off and left my meter leads in place at those circle looking ceramics I was at...I would have read 0 volts because this unit has a 2 pole contactor used for the heater strip. That would have broken both the L1 and L2 sides of power to the strip and that means 0 volts. If it were a standard heat sequencer or heat relay I still would have gotten 0 volts on my meter if checking at those same terminals but only because the heat sequencer breaks one side of power. If I checked either terminal to ground I would have gotten the 120v you mentioned.
@ranimouf Жыл бұрын
@@johnjennings487 thank you for the info.
@jolyonwelsh98342 жыл бұрын
I am a big proponent of electric resistance heat.
@johnjennings4872 жыл бұрын
Very popular with heat pumps around my area and very easy to learn/fix.
@cjsimmons3140 Жыл бұрын
What to do if the fan continues to run when thermostat in on off
@cjsimmons3140 Жыл бұрын
?
@johnjennings487 Жыл бұрын
Indoor fan or outdoor fan? Either way it sounds like a switch is closed and should be open. It could be a stuck relay switch or it could be the thermostat is sending power to the relay when it shouldn't. If the indoor fan, you would need to check voltage at the fan relay coil or circuit board 'G' terminal (to the Common)to see if you have 24v present. If not then it is likely just the relay needing replacement or the entire fan board.
@jolyonwelsh98342 жыл бұрын
I see you are operating on a 208 volt Wye 3 phase system. Keep in mind that when you do that, your heat strips will deliver only 75% of their rated output. In this case a 5 KW heat strip will put out 3.75 KW worth of BTU's.
@johnjennings4872 жыл бұрын
Thanks. This is a 208 system with both single & three phase for the shop. This one was a single phase I think but nonetheless there are a lot of good things to remember about different phase/voltage systems as you said. Definitely have to pay attention to the power supply/system you are working on.
@jolyonwelsh98342 жыл бұрын
@@johnjennings487 Or use a buck/boost transformer. In this case you will need a 1 KVA transformer with a 120/240 volt primary with a 16/32 volt secondary wired a an auto transformer in order to boost the voltage as close to 240 volts as possible. According to my calculations the output voltage will be around 238 volts.
@johnjennings4872 жыл бұрын
Man that is too much calculating for me. But I would use a buck/boost on my flounder lights! I do like the thinking aspect of electricity "stuff"... Keeps the brain sharp when it's working on those calculations.
@jolyonwelsh9834 Жыл бұрын
Or you could install a 7.5KW heat strip. That is 7.5KW at 240 volts. It would be 5.6KW at 208 volts. Thus you would be compensating for the voltage drop and getting the same heat level at the lower voltage.
@johnjennings487 Жыл бұрын
Good point. I'll have to bring that up in the future. The wire size already there is probably plenty big enough so it shiuldn't be a problem. Thanks
@deltafour12123 жыл бұрын
Please, don't ever take this video down
@johnjennings4873 жыл бұрын
I don't plan on it. Thanks for watching.
@michaela6147 Жыл бұрын
Not a good place for meter. Just asking to put your hand in wrong spot and get lite up
@user-bj8ke7zx1z7 ай бұрын
209 is a bit low
@johnjennings4877 ай бұрын
I don't have a 240 volt power supply at my shop, it is a 208 volt source.
@drummersnare6276 Жыл бұрын
Does it also work with one lead on ground instead of neutral?
@johnjennings487 Жыл бұрын
With one lead on ground it is a little tricky. I don't like using it. Not to plug any of my own stuff but I have a video on why I don't like using ground for checks with a meter. It can confuse you if you don't watch it. In my eyes you really have to know what you are going to get before even checking it.
@drummersnare6276 Жыл бұрын
@@johnjennings487 Okay thanks for the reply. In my HVAC program we used ground and it seemed to help, but I’ll definitely check out your video on it
@johnjennings487 Жыл бұрын
We all have our ways. Understanding them sometimes is tricky and takes a while.