This was an interesting call on their exhaust fans that kept turning on and off after a power outtage.
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I just ran a similar call but instead of room sensor getting fooled, the hood temp was being fooled by a worn belt. Fan was moving so little air that the sensor differential would get close enough to stop calling for exhaust fan. So basically low air flow was resulting in no call for airflow 🤦♂️
I asked a friend who had trained as a chef, did his training include anything about kitchen equipment, the mechanical side of hood fans, gas safety, hood washdown controls, makeup air, etc. He said he only learned about those things once he was in an actual commercial kitchen. Based on my experience over the years, any school that teaches culinary arts should include a field trip to learn about how a kitchen works mechanically. Not so they can fix it, but at least understand what a repair person is telling them… Are you in Barrhaven ?
Let's guess what Mexican restaurant it was
Yaktrax… don't walk on ice without them!
Your my Favorite YouTuber and I love your favorite word. “CHINGUS”
Power outage can scramble unit configuration. Lithium Backup battery is a good test. 3V is Good. <1.8V Bad. Exact Voltage depends on the system. I mark the Date on the battery when its installed. 10 year max life.
Did you pull the little piece of plastic of the LCD display between takes? I feel the OCD too!
Maybe flame rod was locked out due to frost.
you slip, you fall you stick your tiny arm out, your body says "lolz thats not stopping me", your arm is broken, and your still bruised up from the fall. Service area Ottawa??
You are more of a trainer to me than my trainer is to me, thank you for the videos.
This is a case of what I call "white coat syndrome", where the problem is no longer happening when the technician shows up (the guy in the white coat, therefore the name). Happens all the time in automotive repair, and I assume most other trades too.
Usually prior experience is the only reliable quick way of fixing these, otherwise you have to do like you did and go thru the whole diagnostic procedure looking for "fingerprints" of the issue, evidence that something is still not quite right.
Evidence like that temperature sensor reading being wacky is exactly the kind of thing you're looking for.
Around my area, if it's a car you get under the hood and start wiggling wires and looking for the green fuzz of copper oxidation, which means you have a wire that chafed thru, then corroded thru, and now only conducts current half the time. Intermittent issues then show up because one bump in the road might sever the connection, the issue shows up, then they go over another pothole, the circuit completes (probably poorly) again, and now the issue's gone. My dad has gotten really good at finding those kind of issues, if I have one I can't crack I give it to him and he's found it within 2 hours usually.
I know its several months old. But I haven't seen anyone mention this. When you were checking fault codes, you hit enter and got into the codes menu. You saw the PCU error, but when you went to scroll through the list, instead of hitting up or down, you hit menu, which should act like a back button. So you likely backed out of the faults menu back to the previous screen instead of scrolling. I can see how it would be easy to do, your finger is nearly big enough to hit two buttons at once. And the silk screen print telling you which was which is tiny.
wait, there's snow in california? 😀 Are you in Orleans ?
I've never been a huge fan of the automatic hoods, but they are becoming required by code in a lot of areas. I had no idea that there is a room sensor for the hood. I figured it just operated on a fixed temperature using the sensors in the hood. I don't see why that is necessary, but I'm not a kitchen hood expert. Service area Orleans??
Isn’t there an interlock that shuts off the receptacles behind the grills in the event that the exhaust fans don’t turn on for some reason?
Watched this video on the 31. I'm a total rookie in commercial and never even worked on am exhaust fan. A customer called my residential appliance co. and for help as he couldn't get anyone else out new year day. My lucky day this is the same system he has. I knew exactly where to look and what to look for. Even though it was a simple repair sure made a good impression. I love how detail oriented you are and that you take your time to do it right.
I would recommend getting a battery operated heat gun would come in handy at a time like this and checking other temp sensors. Also would work with shrink wrap as well
edit my dyslexic brain left a few words out
Fault logic problem. I have Trapped Xducers. Can they?
I think that is one of the most difficult parts of troubleshooting when there is no way to reproduce the issue and you just have to take what you know and use it to the best of your ability.
Although tech support is always a gamble I have never had too much luck with that. I work in the IT industry so might be different as far as support goes.
The big picture and the narrowing down of the slightest possibility. Reasonable judgment plays a significant role in formulating your next step, yet the path stays consistent until it no longer provides a logical conclusion. That's what I walked away understanding, and I appreciate that. Great job and thanks.
You do a great job with these videos, and your deductions are accurate. Unfortunately, there is a tradeoff with electronics such as these — you get an absolutely amazing variety of options, usually with none or very little additional hardware (most of the time an extra terminal block here or there), many of which are extremely difficult or impossible to achieve the old-fashioned (analog) way. On the other hand, they can be really wonky in a very random fashion after a power outage or a power surge, whereas analog can be a bit more forgiving.
You are correct in that there is an adjustable offset that is used to compare the hood temperatures to the room temperature, to decide when to automatically turn on. In this situation, if getting an accurate room reading is difficult, you can go into the configuration and set temp sensor #1 (the room sensor) to "preset", which then assumes that the room is 75 degrees at all times.
A lot of end users like the auto setting because they don't have to bother with turning the fans on and off — sounds lazy, but it's one less thing to worry about. You'd be surprised how often people forget to simply turn the fans off at the end of the day (which can also be fixed with activating the manual-to-auto option, as mentioned).
Love the videos, and appreciate the hard work you put into this!
I know why I subscribed…😁..love vids like this….dunno how much u make ..its not near enough..
Since you are in the USA, you are using Fahrenheit for the temperature in your videos. Is it possible to add an overlay with the temperature in Celsius (for viewers outside the USA)?
Had to laugh at the painted black trane units that were sticking above the parapet wall.
That is a correct assumption via temperature probes in the hood forcing on/off especially with frost on the roof, it’s cold outside, if the MUA is un-tempered. And as that air comes back in it can quickly trigger the need for no exhaust.
Those room sensors are completely worthless.
Sir, which vacuum pump do you use in the 410 system? Single stage or two stage .plz tell me . Are you in Nepean ?
Something to consider on these, we have somewhere in the range of 30 or so of these where I work. We have had issues with the reliability of the sensors and losing settings after power loss.
A few months ago we had a guy out from Captive Air …he plugged into every one of them with his laptop and updated the software. Since then we have had far less issues with them.
Was this at a walmart ? Service area Kanata??
I'm not in your business but I would schedule those belts for down time. Unless you have permission and they understand they may have to move to another cooking surface. What if something goes wrong. I am in the IT business and work on servers and it's almost the same thing with having to take into consideration the impact on customers operations.
Can someone tell me why there is an RJ-45 connection on that board? I don't think Ethernet would be plugged into that.
with power outages, Always ask how long power was out, how many times it went on and off and if it was sharp on/off or did it brown out!
Hey , Chris , good video as usual .
Hey , if you can address one thing in the stream tonight , even though I can't be here live to my demise ,
How do you differentiate between gut feeling that tells you to double check , and going OCD and doubting yourself too much ?
Cause I kinda suffer of some of that !
Thank you very much indeed 👍
sounds to me like the magical control panel at the hood is going wonky. good old junktronics.
maybe the backup battery on the control board, possibly another in the control button panel? look like standard CR2032, used in many things including computer motherboards. Are you in Kanata ?
Awesome troubleshooting skills Chris nice way to put your thoughts together of how everything works how space temp sensor and Hood temp sensor work together to allow exhaust Hood to come on automatically and disengage when temperature goes down. It makes sense that the sensor is not in the ideal location.
Oof that electrical in the ceiling makes me cringe.
Merry Christmas to you and your family
Great job Chris !!! And nice sub count rising , pretty soon you will be making all your money from YouTube instead of in the field lol so happy for you brother !!!!!
Nice troubleshooting Bud …
Why do you call them motor starters?? There contactors with overloads
Excellent work!! That video demonstrates not only your tech skills but your interpersonal/communication skills as well even though we did not see your interaction with the manager it was an important part of the job as you mentioned in the video.
DANG those TRANES are HUGE!
A fault history log without times and dates. Pure genius. 👎 Service area Barrhaven??
I get the weirdest ads watching Chris's videos like ads about wine, flowers and furniture like how does that have to do with hvac and exhaust fans. Like I watch Car and HVAC Videos that's pretty much it GREAT VIDEO THOUGH! At least you can open the doors this time
Still waiting for the r134 r290 video 😭
These videos are gold. Keep it up, bud!
Great service call. I’ve spoken with Jerry M. with captiveaire before and he was great.