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Rudd URGG-05E24JKR Rooftop unit.The rollout disc needs to be reset every couple of months.If the tenant changed the filter would this help? What would be an appropriate part no. for the disc in this furnace?

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I would first check the heat exchanger for cracks

Posted on Apr 04, 2011

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How do I locate the aux limit switch on a rudd urka gas furnace?

Been awhile since I worked on one, but here goes. Should be 2 rollout switches on burner assembly and another in blower housing. Most are resettableand have a red button to reset.

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My Rudd Model# UGPH-07EAUER Silhouette II furnace goes into lock out. I have replaced the filter and still happens. I actually thought it might be the Limit Switch and replace all 3 of them. Still goes...

Does this unit also have an AC coil installed? Can you check to see if it is dirty or blocked? Although you are not cooling the heated air must still pass through this component. Has it ever been operated without a filter? How many return ducts tie into the unit and is each path filtered? Do you have filters in the individual return grilles? What do the blades on the blower look like? It sounds as if the temperature may be too high if you have to continually reset the high limit. This occurs when you have low air flow.

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If you didn't reset the rollout switch, the air will not work. The rollout switches are in the furnace burner secton. Look at the burners, the rollout switch(es) are just above the burner. They will have a button on top to push for reset. These rollout switches will generally have two wires going to them.

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The flame rollout switch keeps kicking out. Theirs no flame rollout,i put new burners in it, everything looks good. unit may stay on and run for 3 or 4 cycles,and sometimes it wont stay on 30 seconds.Ive...

Try adjusting gas pressure. There might be an inline rollout switch that looks like an inline fuse. If that is the case several techs might over look it. The best thing to check is the schematics for the furnace in the owners manual. If you follow the low voltage, you will definately see if there is a rollout switch. If it is a new unit it has one somewhere. If you paid a company to change the burners, call them to get your money back. I have only changed burners on old janitrols where there was a factory problem with the design. They are a stationary device that has no moving parts and therefore very rare if they break. The tech probably did not know and got nervous. Call the comapny and talk to the manager about the problem. You should not have to pay for parts that were not broken.

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Gas furnance would only operate for about 3-5 minutes then turn off. Replaced gas valve on furance for a Rudd comerical A/C 4 ton unit model UKKA-A048JK10E. Now the blower fan turns on but the igniator and...

the rollout switches will be located at the ends of the burner assembly and will have a manual reset. they must be manually reset to ensure that the problem has been corrected. Most units will go into a soft lockout for a time and eventually a hard lockout if the problem persists. Go to and go to their troubleshooting section for a gas furnace. the codes they give are pretty common for alot of furnaces and see if they help

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1 Answer

Carrier 48GP rollout switch code

You need to find the rollout switch and see if it has a manual reset button on it or not. There are 3 styles of rollout controls. One is a disc type that mounts behind the burner ends, there may be more that one,possibly one on each side of the burner tray. This style rollout is usually manual resetting. It most likely will be black or silver in color and usually is about the size of a penny in diameter and about 1/2" in thickness with 2 wires going into it and a red push type button in the middle. The next style is similar two the first as it is manual resetting also, but this rollout uses a small copper capillary tube that runs just behind the burner ends and is mounted to the burner tray. If you follow this tube it will lead you to the manual reset button which is most likely mounted below the burner tray. The last style rollout is what they call a fuseable link, this is mounted behind a burner end and looks like a resister used in electronics, it is about 3/4" long and about 3/16" in length and is silver in color. It is mounted in a porcelain mount. This style is not resettable it has to be replaced with one of the same temperature rating. You would need to go to a Carrier/Bryant dealer to get the right one. Either take it with you or bring the model and serial number of your furnace.
The most important thing about rollouts is that there is a reason it opened up(went faulty). The reason they trip or open up is due to the burner flames are rolling back out of the burner box and getting the rollouts hot enough to trip or open up. This is telling you there is a serious issue with your furnace that needs to be found and repaired. There are a couple of things that is causing this. They are that your exhaust is not venting properly. Your exhaust venting could be restricted with whatever. You need to pull your venting off and look for restrictions all the way from your heater to the end of the chimney. The next thing it could be is that your heat exchanger is cracked enough to allow positve air pressure on the exhaust system when the indoor blower fan is running. You can check this out yourself by watching the burner flames when the indoor fan comes on. If the heat exchanger is cracked enough the burner flames will flutter or move back toward you when the indoor fan comes on causing the rollout to trip or open up. Most manufacturers have a 20 year warranty on the heat exchanger(parts only,you pay the labor cost). Depending on the age and condition of your furnace it may not pay to have the heat exchanger replaced.
I hope I was able to steer you in the right direction!! Good luck!!

Nov 28, 2009 | Heating & Cooling

1 Answer

Where can I find specs on two older RUUD models: URGG-05E30JKR & URGG-05E24JKR?

what kind of specs are you wanting. try to google the model#. It should take you to where you need to go

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2 Answers


service once a year clean dirt and hose the coil out make sure power to outdoor unit is off also make sure you keep a new air filter change about every 2 months you should also have a tech test you pressures this could cause poor cooling also need to clean inside coil also a service tech will probaly need to do this good luck

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Combustion Fan runs all the time

the schematics sould be on the back of the door panel

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sounds like your burners need to be cleaned, you will need to pull them out and clean the rust out of them. the rust builds up on top of the burners and when you gas valve opens and fills the burners full of gas you will have a roll out of flames. hope that helps.

Dec 30, 2008 | Heating & Cooling

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