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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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  • 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

  • 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.
A/C, & Heating Contractor.
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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

  • 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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1 Answer

Rheem super quiet 80 turns on lights up for 5 or 6 seconds then shuts down then repeats once i replaced the flame sensor still does same thing?

Three possible problems come to mind. A dying inducer motor, or a partially obstructed exhaust vent could do that; bypass your pressure switch to find out. Also, and this one is trickier, it is possible that the flame isn't hitting the flame sensor just right. Adjusting those brackets can be a pain, and there is no easy test to eliminate that. Finally, real or perceived overheating of the exchanger can cause short-cycling. A bad high limit can do that, or you can run your unit fan on medium or high windings to trick it for now.

I would try testing in that order.

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Oct 27, 2013 | Goodman Heating & Cooling

1 Answer

Rheem furnace not heating.

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.

Mar 07, 2012 | Heating & Cooling

1 Answer

I have a carrier furnace and the led light is blinking 3 short then three long what is the code

code 33 LIMIT OR FLAME ROLL-OUT SWITCH IS OPEN - If open longer than three
minutes, code changes to #13. Flame roll-out switch requires manual reset.
Check for: - Dirty filter or restricted duct system. - Loose blower wheel.
- Defective blower motor or capacitor. - Defective switch or connections.
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Apr 19, 2011 | Carrier 38BRC036 Air Conditioner

1 Answer

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.

Dec 11, 2010 | Heating & Cooling

1 Answer

Set thermostat to auto switch unit to heat. Unit lights runs for a minute then shuts off. Fault light blinks4 times, msg. Open high limit.

Check air filter for blockage, clean off flame rod found in the flame pattern of the last burner that ignites, check high limit switch with multimeter to see if good (found above the burner box). Make sure room air blower turns on within 90 seconds of first flame.

Nov 28, 2010 | Goodman CLQ36AR49 Air Conditioner

2 Answers

My Blower runs 24/7 and the burner is not kicking on.... Is this a high limit switch issue?

It might be the high limit, but it could also be the roll out switch or the flame sensor. Start by ohming out the simple switches the high limit the rollout if the are good use a piece of light grit sand paper or some emery and clean the flame sensor. This is a rod that sits in the flame of the burner telling the gas valve the burners are lite and it is okay to keep the valve open.

Jan 15, 2010 | Ruud UBHC Air Conditioner

1 Answer

My furnace, Goodman CAPF030B2C, isn't putting out any heat. The blower runs constantly without any heat. The code light flashes 6 times, which means open roll out. Is there anything i can do to fix it...

Yes, the roll out switch is located near the burners and has two wires leading to it. It is about the size of a dime or penny. There is a small reset button between the two wires that you press to reset it. Sometimes you need to press a little hard to get it to reset. If the unit trips it again, and you don't see the flame "licking" out from the firebox and no evidence of soot in the area, it's a bad limit and needs to be changed but if you see even a little bit of flame leaving the fire box, shut down the unit immediately!!!! You are in danger of a fire and carbon monoxide poisoning!

Mar 30, 2009 | Goodman Heating & Cooling

1 Answer

Goodman Dependable 92 blowign cold air only - no heat

blowing cold air on this furnace usualy caused by high limit trip, or flame roll out. the first one, (high limit) is from insf. air flow. (blocked filter,bad zone damper?
The second,(flame roll out) caused by bad heat exchanger,blocked vent.ect.

Jan 09, 2009 | Heating & Cooling

1 Answer

Weather king outside gas furnace unit in not igniting

have a lennox combo furnace that will not light but has been lit manually at times. This is an ongoing issue....worked for two weeks but is now acting up again and will not lite manually now. Had unit apart and cleaned checked all connection for tightness or issues. When manually lighting it ignites but within a sec flame goes out....any suggestions out there please help

Dec 13, 2008 | Heating & Cooling

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