I like how you did all the checks- the gas pressure check was pretty interesting. I have a tempstar furnace in my attic that is six years old. One night it messed up by running the fan all night long, but not getting up to temperature. It kicked out a code so I cleaned the flame sensor and that helped but now it kicks out a code for blocked vent, flame blo out etc. They told me I had possibly a bad high temperature limit switch but I saw online where someone else had the exact same problem as me and replacing the high temperature switch didn't fix the problem. My return is in the ceiling and the professionals came today and told me it has restricted air flow - not enough vents or high temperature limit switch. It's been running fine these six years but maybe it has a problem.

@HughesManHVAC

8 ай бұрын

I would listen to your hvac contractor, thanks for the comment

Great job..... we have several of same series RTU. We have had a few VFD issues were the drive forgets who it is.. lol the tech line is super good. Run through all parameters and haven’t had any more issues... be safe

Great Job. Great Work. Great Video. Great Man 💯❤‍🔥

@HughesManHVAC

Ай бұрын

Thanks 🔥

These are great! Helps me get an idea of what to look for or give me another way of thinking through troubleshooting

@HughesManHVAC

2 жыл бұрын

Thanks brother!

great video, def like how you explained everything.

Hi, I really appreciate what you r doing and the way you explain it. Thank you

@HughesManHVAC

Жыл бұрын

Thanks for watching

@sofa.s8365

Жыл бұрын

My pleasure

Very good and very Thorough. I enjoyed the video. Thank you and cheers!!

@HughesManHVAC

2 жыл бұрын

I appreciate it

I only had a little tartar the terminals of my limit, thanks for the video!

@HughesManHVAC

2 жыл бұрын

Thanks for watching

I like the new intro. Cool tool bag as well.

@HughesManHVAC

11 ай бұрын

Thanks 👍

I like those York units not crazy about the new control boards just got to get used to them

@HughesManHVAC

4 жыл бұрын

Yes, they do take a bit of getting use to

Great video

@HughesManHVAC

3 жыл бұрын

Thank you Andy

I'm a fan of the Fluke 324/325 meters too. I like the smaller size compared to the 902. Good troubleshooting. Good video also

@HughesManHVAC

Жыл бұрын

Thanks 👍 I appreciate it

@MrMultitool

Жыл бұрын

I did cut a little off of the shroud on the test leads so they go in farther and don't come out so easily.

Good video great info

@HughesManHVAC

Жыл бұрын

Glad it was helpful!

Awesome video keep them coing

@HughesManHVAC

9 ай бұрын

Thanks! Will do!

Good video 👍

@HughesManHVAC

4 жыл бұрын

Thank you Jeff! I appreciate it.

Thanks that help me

@HughesManHVAC

3 жыл бұрын

Thank you!

Somebody assumed more filters was a better idea, but wouldn't the restricted draw of air flow cause the limit switch to fault?

We have a York at one of our stores as well. VFD is a problem at random in the cool mode....

@HughesManHVAC

Жыл бұрын

That sucks, thanks for watching

Sometimes if the screen is showing FAN ONLY and the thermostat is calling for HEATING, the OAT (outside air temperature sensor is reading an unrealistically high temperature (i.e.: 145°F). You can scroll down in the STATUS menu and read all the temperature sensors or ohm them out. If the symptoms are intermittent, water may be getting into the sensor's wiring connectors.

@HughesManHVAC

3 жыл бұрын

Good to know, thank you!

@batmantomgaming2262

Жыл бұрын

Thank you hey Mikey and huesman

Great video bud, just wanted to see where was that hight limit switch located

@jordansaudi1324

3 жыл бұрын

*Yeah! We r wondering same. Where is the limit switch? What is part number? The Lennox Booklet is silent about all parts & electrical wiring. My wife is Physicsist & ready to help. But, I have no tools. I need to buy!*

@adminr3803

3 жыл бұрын

@@jordansaudi1324 oh you can get the part from any supplier depending on your region (mine was a Noble) but my real problem is the limit switch not being on top of the burner compartment like his is and I’ve compared both RTU’s and they have the exact same specs but keep in mind the unit I’m working on is very old and has not been serviced in a little less than a decade

I bet they used the old filters to keep the new ones upright. Instead of using the little filter bar.. 🤷🏼‍♂️

@HughesManHVAC

9 ай бұрын

Thanks for watching

Good video, is there a way to reset the board itself without shutting down the unit, which would be the right process to reset it? I usually just turn off my breaker to reset it.

@HughesManHVAC

Жыл бұрын

You could pull the 24v wire that powers it but it just as easy to just pull the disconnect for me

@amfmechanicbowlingcommunit5048

Жыл бұрын

@@HughesManHVAC Thank you for your reply, I had a shut down due to limit switch Failure on the control board. Checked all my safety switches including limit switch but After I reset it. Unit work for about 30 minutes and then swift from cooling, idle to “fan only” and status light start blinking red and it shows a “Supply air temp cooling Excessive”. Thermostat never goes down. Any Idea? Thanks

York, been having similar issues on some of my accounts

@HughesManHVAC

Жыл бұрын

Thanks for watching!

Wow

@HughesManHVAC

4 жыл бұрын

Thanks for watching

#41 thumbs uP

i have the exact unit doing same exact issues with the one board normal heart beat but other board fan only limit issue and cannot find the problem the customer said it's doing it in summertime too and after he resets it it runs again any thoughts on what's wrong

@HughesManHVAC

Жыл бұрын

I’d have to go back and watch this video again to remember what it’s about.

can u tell us about tools u use

@HughesManHVAC

3 жыл бұрын

I will make a tool video soon man! Thanks for watching and stay tuned for that vid!

i did something dumb, .. i changed my thermostat and nothing worked except the main large fan always runs no matter under what setting it is.. i put back the old thermostat but it still does the same thing... the green light on the gas valve gives me an code of- "limit circut fault"

@HughesManHVAC

3 жыл бұрын

there are multiple limits on this unit. i believe a high limit by the heat exchanger, a limit in the blower compartment and maybe a rollout.