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Where is the auxillary limit on a rudd urka gas furnace

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Should be 2 by burners and another in blower housing. Also purge motor/inducer fan has to pull slight vacuum to complete circuit.

Posted on Nov 20, 2014

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Posted on Jan 02, 2017

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SOURCE: schematic diagram Rudd silouette II a/c gas furnace needed

There should be a small set of screw lugs on the electronic board in the furnace. Look for a red wire that comes out of the transformer and follow it to find where the 24V connections are.

Posted on Sep 26, 2009

  • 10 Answers

SOURCE: EQPT; RUDD GAS FURNACE // Model #

thermostat has a 'fan on' switch. flip it to auto

Posted on Oct 23, 2009

  • 99 Answers

SOURCE: i have a rudd hot air gas furnace,ignitor sparks

to carmelmontgo; do you have a smart gas valve sometimes the wire connections get loose. remove wire connector then reinstall. also cleaning a flame sensor will work if the flame sensor is good. I would check the ground connection sometimes contaminated with rust. also I would check the gas pressure with a gas manometer...my email is alpharomeo@windstream.net

Posted on Jan 21, 2010

taran_2005
  • 10515 Answers

SOURCE: Rudd Furnace Model UGRA-04EMAES Gas

Hi,

If the Igniter is not glowing, then the gas valve would not open to push out the gas. This indicates a Weak Igniter and you need to replace that.

Let me know, if needed further assistance.

Hope i helped you.

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Posted on Feb 20, 2010

  • 1015 Answers

SOURCE: I have a Rudd furnace

Well first you want to verify that there is gas pressure coming from the connector. Turn off the valve and disconnect the connector. Then turn on the valve for 1 second and back off. You should get plenty of gas flow. Be careful doing this!. Then inspect the opening at the adapter to the control. There is a screen inside there. Make sure the screen is clear(not plugged with pipe dope,lint ect). When the igniter reaches the 2200 degrees you should hear the gas solenoid valve click open releasing gas. If you hear it click and no gas is released you will need to inspect the burner orfices. The orfice has an extremely small hole and there is a posibillity that they are plugged with debris. You will need to use a very small wire(like a tie strap) and insert it into each hole and see if there is anything in the orfice. If you do not hear the gas valve click then it might not be getting the signal it needs due to a weak igniter or flame rectification sensor. Does your furnace have a stand-by pilot that is lit by the hot surface igniter or does the igniter directly light the burner assembly?

Posted on Feb 20, 2010

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1 Answer

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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You have one of three things here
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2 Rheem Protech 500 thermostats, 1 upstair & 1 downstairs with a Rudd Achiever 90Plus gas furnace. Thermostat downstairs works fine but upstairs one cycles fan on and off 2-3 times during heating...


Have you checked to make sure that all of the supply registers are open, the air filter is clean and nothing is blocking the return air grill?
It almost sounds like you could be cycling on a limit switch.
Usually on gas furnaces, the blower is controled by the onboard controls, in the cooling mode the thermostat will control the blower.
I would be looking past the thermostat, at the furnace it self.
I hope you find this helpful. If you continue to experience problems, please let us know and we will dig deeper. :)
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Feb 13, 2010 | Ruud UBHC Air Conditioner

1 Answer

I have a rudd hot air gas furnace,ignitor sparks


to carmelmontgo; do you have a smart gas valve sometimes the wire connections get loose. remove wire connector then reinstall. also cleaning a flame sensor will work if the flame sensor is good. I would check the ground connection sometimes contaminated with rust. also I would check the gas pressure with a gas manometer...my email is alpharomeo@windstream.net

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The gas sometimes ignites and the goes out and


Check out my tip. I think it will fix your problem.

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Meaning of rudd furnace trouble codes


Error Codes
A green LED indicates system faults
Steady On: System OK
Steady OFF: Board control fault or no power applied
1 Flash: Ignition failure (control in one-hour lockout)
2 Flashes: Pressure switch fault, fails open (switch is
stuck open)
3 Flashes: Limit switch open (main or auxiliary)
4 Flashes: Pressure switch fault, fails closed (switch is
stuck closed)
A yellow LED indicates flame status
Steady on: Normal flame is sensed
Flashes: As flame weakens, frequency of LED flashes
increases

Dec 12, 2009 | Heating & Cooling

1 Answer

Schematic diagram Rudd silouette II a/c gas furnace needed


There should be a small set of screw lugs on the electronic board in the furnace. Look for a red wire that comes out of the transformer and follow it to find where the 24V connections are.

Sep 21, 2009 | Ruud UBHC Air Conditioner

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