Sequence of operation of the 80% AFUE efficient gas furnace Goodman

[@enriletrinidad3378]

Thank you for explaining the sequence of operation for this Goodman furnace. I don’t have a manual but with your help, I was able to figure out that my gas valve was defective. I could not find the original Honeywell valve, but obtained a White-Rodgers replacement for below $68 including tax. Thank you for a very clear and concise explanation I fixed my furnace!!

[@jeremycreager9875]

Because of your outline of the process, I was able to troubleshoot my pressure switch issue. I discovered it was not lighting, so I inspected the switch and discovered there was debris in it. I made sure it was shut off, then held the pin in for two sec to reset it. Buttoned everything back up tuned on the breaker and it was running like a champ. Thank you sir!

[@goodkao]

I like the way this guy explains things so clear and very easy to understand. Thank you all your help and thank you for who you are and thank God for you.

[@benaires07]

I WENT to school for HVAC in 2004, and I'm RUSTY AS HELL, but with your videos and my BOOKS that I STILL OWN FROM SCHOOL, I have been re-training myself and do some work for neighbors in my hood. You are a very Knowledgeable cat!!! Keep showing these cats how to make this money and how to actually LEARN how to fix furnaces. The IFC board makes things easy with the blink codes, depending on the model!! THANK YOU!!!!!

[@grayfurnaceman]

Welcome GFM

[@grayfurnaceman]

It varies with the manufacturer. Some as low as 10 sec, and some up to 45 sec. Thanks for the support. GFM

[@grayfurnaceman]

Thanks for the support. GFM

[@tomsadler2961]

Thanks for your expertise

[@drummerdem50]

Excellent video , instructor GFM.

[@DDouce]

Very important guys

[@r4ym1n13]

nice & short. easy explanation. thank you GFM

[@grayfurnaceman]

Welcome GFM

[@bryanwilliams7530]

You explain stuff great, thanks

[@sarbbhamra6758]

Thank you so much for making this video……you should be a instructor… the school I am attending to get my G2 …. Teaches nothing.. god bless you 🙏…..

[@grayfurnaceman]

Well, I did teach for 9 years. GFM

[@sarbbhamra6758]

Can you please make a video with a multimeter checking all the components in the furnace….. Thank you 🙏

[@stevencarrillo3615]

I learned a lot thanks

[@grayfurnaceman]

Welcome GFM

[@grayfurnaceman]

There are a number of possibilities. Is there power to the unit? Is there a flashing code from the control board? Hope this helps. GF

[@luckyguy600]

thank you

[@leanorlando]

Nice video!

[@el1015able]

very nice video sir god bless you

[@bobbydigital8]

At what point after the hot surface igniter turns on does the gas valve open up? Thanks for the video.

[@metalblade2323]

Thank you!

[@NatureBoy711]

the inducer fan won't come on when calls for heat. is it the pressure switch? or, is it the control module?

[@geojor]

informative video, thanks...

[@craigwarnasch2769]

So i may have not complete understood what you were saying but you said that when the combustion blower is on and pressure switch is closed the unit will no longer move forward that is incorrect the unit will operate correctly like i said could have been a misunderstanding

[@grayfurnaceman]

You have misunderstood. The control board must see an open pressure switch switch before the inducer will start. This is done to insure a stuck closed pressure switch will stop the sequence for ignition. GFM

[@justindenomme3769]

T-stat call for heat Inducer/venter motor starts Closes Pressure switch HSI is powered Gas valve opens (3.5") w.c Blower motor starts to cool heat exchanger T-stat becomes satisfied Gas valve closes Venter motor continues for 30 secs to a min Blower continues till heat exchanger is cooled

[@grayfurnaceman]

Justin Denomme Just a couple of things missing. Control board checks to see if pressure switch is closed before starting inducer. Also control board checks to see if any limits are open and stops the sequence if any are open. Hope this helps. GFM

[@justindenomme3769]

Very help full , I write my g3 exam today in ontariobso I'm very nervous

[@fsu3784]

first off love the videos, very helpful! Have a 1975 bryant furnace that has pilot light lit , but burners will not fire. I'm thinking pressure switch, but should I look at inducer motor first? Tia

[@grayfurnaceman]

+coil junkie If your furnace was made in 1975, it has neither a pressure switch or an inducer. If pilot stays lit but no fire, check incoming power first. Hope this helps. GFM

[@1242chisox]

How common is it to have a limit on an inducer? I seen one yesterday and that's the first time seeing one. If they trip, is it like a high limit where the blower runs to try and close it. Will the inducer keep running to try and reset it? New to this field.

[@grayfurnaceman]

+1242chisox They are fairly common. It shuts down the furnace and starts the fan on most furnaces. Hope this helps. GFM

[@justaguy4real]

great explanation, all of your videos. but theyre really slow

[@grayfurnaceman]

+byekim mikeyb I taught for 9 years, slow makes sure everyone understands. Thanks for the thoughts. GFM

[@conchaivn]

With thermostat set on heat and fan set to on, the inducer motor doesn't come on. W=C and R-C terminal voltages are 0V..Where do I go from here?

[@kahit_ano15]

check the 24 volts transformer, R- C should 24 volts

[@copkhan007]

I'm taking HVAC course and we had the same exact furnace in the class room which we were working on. The inducer fan would run and turn off every 30 seconds. When we disconnected the wires going to the limit switch it would run but ignition would not come on. What you think the issue is there? thanx

[@grayfurnaceman]

The pressure switch was probably not making. The board gives up if the switch does not make within seconds. GFM

[@Babyfryhead]

There could be a couple things, first check that the exhaust pipe is clean all the way out, because if it has a birds-nest in there or other object it can change the flow of the air and make you think the pressure switch is bad but it is not. once you do that, if that still doesn't solve your problem, i would use a jumper wire and bypass the pressure switch just to see if that solves your problem, if it does, replace the pressure switch.

[@richardmurphy512]

Once again - one year to the day my Weil- McLain ULTRA 155 has an internal leak in the heat exchanger. Those things are a piece of crap. Being efficient is not much good when the heat exchanger has to be replaced every year. Weil- McLain don't want to know about it. So if you are considering a new unit do yourself a favor and consider a different brand.

[@garyoconnordbaairrepair7775]

The indoor fan sure sounded a bit noisy.

[@purrungas2012]

what makes the blower stay on till the heat has dissipated from the unit thanks

[@grayfurnaceman]

On this unit, There is an adjustable timer on the control board. GFM

[@nathanbirnakamichaeljackso1705]

I like furnaces

[@HighVoltageMadness]

me to

[@adamshowers6877]

Same I work on Mine

[@wjackstl]

gfm, what are thoughts on goodman? junk or cheaper alternative to carrier & trane?

[@grayfurnaceman]

I have not had good luck with them. GFM

[@rimpaheart6954]

Chole aslam tomar ghore tumio aso kintu

[@aspillie]

hello my code flashes twice that tell me pressure open with inducer on I have no heat

[@grayfurnaceman]

I would first look at venting blockages, if your furnace is the same model as the one in this video, check the fitting at the inducer that connects to the pressure switch. Sometimes it plugs. GFM

[@terpencar]

My furnace from the day it was installed (9 years ago) starts the House fan, then the inducer then the igniter then the gas.. How can I change the sequence so the squirrel cage does not start spinning til the Flames are on? Thing blows cold air until the flames come on...

[@grayfurnaceman]

You may have the wrong thermostat or the thermostat is not set up properly. When W is energized, it should not energize the fan. The fan should be energized by the furnace when the heat exchanger is warm. GFM

[@terpencar]

Ok, W has 4 wires connected to it two brown and two white.. Ill see if I can tell where those go on the thermostat.. Its a 1F81-261 white rodgers and I have a heat pump

[@grayfurnaceman]

You have the wrong thermostat for your system. As you have a heat pump, the fan must be set to operate as soon as the heat comes on. You could use something like an IF82-261. You will have to cut the W-904 jumper. GFM

[@terpencar]

ok, My apologies. I just got home and look at the thermostat and I indeed have the IF82-261.. However it looks like that jumper is not cut... so are you saying because it is a heat pump system the house fan must come on first or with the inducer motor? Sorry for all the questions and I sure appreciate the help.

[@terpencar]

I`m just wanting to make sure here.. Because the jumper is not cut, that`s why the blower is coming on first when its on backup heat (Propane) but when its using the heat pump that`s by design? So if I cut jumper It will operate on heat pump the way it does now, but when using propane it will wait to turn fan on after Gas is lighted? Thanks

[@milew81]

How do you take the covers off!

[@grayfurnaceman]

+Mike M If you mean the sheetmetal covers, the top one has 2, 1/4 turn plastic screws on top. The bottom one is lifted up and and pulled out after the top one is removed. GFM

[@leonardlee5050]

why was the blower fan shaking

[@grayfurnaceman]

+Leonard Lee The blower wheel is out of balance. GFM

[@ryans413]

It was unbalanced so it was vibrating.

[@richardmurphy512]

For the second time in three years my ULTRA has developed a leak inside the boiler Last time the plumber replaced the whole heat exchange part of it. Is there a problem with those boilers?

[@HoChiMinh30abril1975]

Take it from one who knows. Don't buy anything from goodman. I have a goodman gas pack that was installed in 2012. The capacitor on the inducer motor went out last year. I called the local goodman dealer in November of last year and several more times since then. They're some of the most ill mannered, insulting people I've ever met. I called goodman manufacturing and got about the same treatment. The inducer motor has to have a 2 microfarad 370 volt capacitor in order to work. I was going to replace it myself but you wouldn't believe how hard it is to find a 2 µF 370 volt capacitor. Every supply place around here has a 3 µF but not a 2 µF and a 3 µF won't work. I finally wound up calling the local Trane dealer to fix the thing. But at the rate I was going if I had continued running all over the state trying to find the right capacitor I would have had more money tied up in gas than the repair costed.

[@craigwarnasch2769]

Some of your terminology during you presentation is not fully correct may want to edit your videos just an opinion

[@grayfurnaceman]

Interesting. Could you tell me where my terminology is wrong. GFM

[@bettytalbert3797]

one burner will lite blow in the chamber and the other burners will come on

[@grayfurnaceman]

Clean the burners. GFM

[@grayfurnaceman]

Thanks for the support. GFM