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Lennox cgs16 series roof top unit, flame lights for 6-8 sec then drops out, switches (roll out, high limit, ventor,ok)

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5 Suggested Answers

tborn6
  • 700 Answers

SOURCE: I need to adjust the

If you mean the ambient lockout switch it shpopuld be oin the outside unit and all that you will need to shut off is the outside condenser before you open the panel. ther is a disconnect that you will have to throw either right by the unit or inside of a main breaker panel.. Hope that this helps and Thanks for using Fixya

Posted on Dec 25, 2008

  • 1 Answer

SOURCE: seal for roof top ac unit

I just spoke with the mechanic at my RV dealership and he said the sticky side goes on the a/c unit. You only have to turn it on it's side to do this. Just wait 1 hour after re-installing the unit on your RV before turning it on.

Posted on Jul 24, 2009

shastalaker7
  • 1515 Answers

SOURCE: I have 2 dometic roof

Hi, unit # 2 sounds as though the run capacitor may be open, shorted, ect.When you say you changed relay, I assume you were talking about the capacitor. If the motor didn't run when you changed it, you do have a bad winding, or open as it just hums. Unit number one may just be the stat switch is only wired to high, or they only have a single speed motor in the unit. You will need to see on the side of the motor or see how many leads are coming off the motor to see if it is a 1, 2, 3, or even 4 speed motor and go from there. It should be a 3 speed to run your heat and a 3rd wire for a spare, capped off. Please let me know if you need more help. I know your condenser fan motor is faulty if the run cap is good, even though the shaft spins free.
Sincerely,
Shastalaker7
A/C, & Heating Contractor.
Please rate me on this :))

Posted on Nov 29, 2010

  • 1015 Answers

SOURCE: i have a dayton fuel

It sounds to me like your draft motor is probably shuttimg off on thermal overload. They will get to hot and shut down until the motor cools down then run again.But by that time it's caused other trouble so I think you need to replace the motor first and then see what other problems it has caused.I hope this helps you and thanks.

Posted on Jan 10, 2011

johnjnail
  • 1702 Answers

SOURCE: 1998 Class "C" - 600

most likely cause would be a seized compressor, but try this remove the cover from the a/c unit and make sure the fan on the condenser is not sized up if the fan is free then you will most likely have to have the compressor replaced, and on most of these units it is cheaper to replace the unit then have it repaired.....good luck

Posted on Jun 05, 2011

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4 red blinks, open limit switch. Replaced limit switch, still getting red blinks.


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Sounds like limit switch is tripped if all it does is start the fan. Is ventor motor running? If not check limit switch should be located below burner compartment. May be manual reset but probably not. Tap on switch and then check filter to see if plugged.

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I have a reznor heater in my garage, it is flashing the code for open limit switch or open flame roll out switch, it will ignite but not put out any heat, and stay lit for a minute or two then go out. ...


I have the same issue, Appears that the fan does not start thus the high temp limit switch operates and the unit shuts down and the green light flashed three times. The open flame roll out switch is resettable manually in the top upper left of my unit. Were the manual shows the high temp limit switch, there is nothing visually located in the panel there.

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My Goodman GMP 125-4 furnace has 4 blinking lights and we currently are unable to get it to come on. What might be wrong?


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1 Answer

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1 Answer

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Here is a link to the manual for your unit heater:

http://tech.lennoxintl.com/C03e7o14l/mk6x6w5J5/503526e.pdf

The 4 flashes is a high limit or roll out switch is open. There are 2 or 3 little brown or black button looking switches with a little button on the top and a wire attached to each side. Press the button on each, you may hear a slight "click". If you do, that is the one that was open. Hope this helps.

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