Happy new year Ted. We can’t be sure what 2022 will bring but we know there will be an endless supply of run cap banditry and helicopters to keep you busy. Love the videos as always!
That's why you gotta LOVE a roll out switch. They may be a pain, but you don't die when they do their job. That old unit is gonna be HEAVY. The Home owner is in for a treat when they get the estimate for replacement. Great job on the diagnosis. 🇺🇸😎 (edit) the lost voltage is getting sucked into that thermal resistor on the insulation plate you removed. I guess it was doing its job also.
You're saying the voltage drop to the valve was due to the resistor that was under the insulation sitting above the gas valve? Please explain why it would do that on a cold start up. Thanks
@@kaptaintrips sure. Some (not all) of those resistors are a 1 time trip. When they reach the temperature they are designed for, they will open to cause the gas valve to close. Some of them are designed to allow the insulation ( ceramic part ) to degrade and cause a " leaching" of voltage. This type is now more common on an electric strip heat unit, ( commonly in mobile homes ) they are Very effective but just like anything electrical they often fail. But the short answer is that they degrade and only allow a fraction of the total voltage to pass.
I learned something new. How to diagnose a faulty heat exchanger by watching the dancing flames when blower kicks on. Saves over a combustion analysis.
Raymond Pajeda , a cracked heat exchanger doesn't always cause the flame to dance. Sometimes the crack is really small and only opens when the unit has been running for a long time. Those are the one's that are HARD to diagnose.
I know it’s an older clip..but I had a unit similar..guy didn’t seem to want to attempt a repair..I thought he was just being a arse..but watching your vids,I understand more about the unit and age..it gets to a point where you have to draw a line …. I got mine running on my own..lasted about a month, then I had to replace it anyhow….actually hauled from NC to FL and gave it to our local tech center so they could use it as a teaching tool ..we don’t have heat exchangers here..my son was enrolled in HVAC..works in the field now..
I ran across a Trane gas pack from 2005 that was going out on roll out earlier this winter. The guys son had rigged it up to run. The flames would literally blow out of the front of the burners when the blower came on. Luckily the guy let me replace it. There was a huge hole in the heat exchanger. I love your videos btw.
Did anyone else hear The Prices Right losers’ music when the date was found? 02:52 I highly recommend for the homeowner to bid 1 dollar, when they receive the estimate.
We don't have many residential package units in Indiana.. package units are mainly commercial here. With the way that inducer motor sounded.... why didn't you check voltage at pressure switch? Seems to me like pressure switch might of been closing and opening causing irregular voltage to valve. Why not in the jumper diagnostic just jumper pressure switch and see if valve opens and ignites? Main thing is all technicians have a different way and you done good. Good job and happy new years.
Hope they have money saved up for a new unit, it won't be cheap. I had my 1977 furnace replaced last year and had saved up money to replace it. I bet the new one will not last 40+ years.
Nice video. Ya, those flames were everywhere. Im curious... did you measure voltage output at the transformer to see if it was wavering there also,or if it's a board/wiring issue?
It depends on the location and severity of the breaches. If there are holes that are 90 degrees offset of the airstream, a venturi effect can create a low pressure condition that will draw exhaust out of the heat exchanger and into the home air supply. This still doesn't guarantee that CO will be present in the home, as a proper burn should also result in little to no CO production.
Ok so you hooked the jumpers up to common and red(24v) right? Where is the white jumper a little further into the video? It's just over the insulation or where?
Thought thata why he went in ... would love too see the heat exch rot 15yrs gota suck for gaspack ..here in phx az was workin on 50+yr old units sometimes .. and with the newer ones its mostly comp or bad coil leaks that get them changed out .. sir have you ever seen a indoor coil dissolve from so much cat pee .. turns the alum fins into green dust and then the copper coils turn into fish bubbler stones leaks so fun then you have to tell them there ac isnt warrenteed for that abuse ?? Twice for me
I own a property with 3 health aire high temps that are about 50 years+ probably if maintained would get another 50 honestly I've only replaced a pully some bearings and rewired a motor because the cable was dry rotted........... I really don't like the newer stuff
Erratic voyage he saw suggests cracked solder joints on the board socket for the molex plug. I've repaired many control boards that had cracked joints rather than replace the board. Saves me time, the company money, and the customer feels we care that much more about getting things done fast
Vent port can allow rain or condensation to fill the atmospheric side with water and prevent the regulator from doing its job, even worse in freezing weather where ice can form and lock the regulator in a "wide open" condition. Gas valve damage can happen very easily happen in that situation.
