Question about Ingram's Water and Air 100,000 BTU RHEEM 80% NATURAL GAS FURNACE DOWNFLOW

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My Rheem gas (sideways) gas furnace burners will go out, shortly after activating. The thermostat works fine, changed out with new one. The system, activates, the fan comes on, the igniter lights, the burners come on, They blow warm air for about 3-4 minutes and then the burners shut off, the fan remains on, blowing cold air out. If I restart the system, a few minutes later, it does the same thing again. Please HELP!! It's getting really cold! Can't afford a technician to come out, right now. Wayne

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HI
YOUR burner have to electrod in head burner please you clean that.

Posted on Oct 26, 2013

Testimonial: "Hi Nasser! When you are referring to an electrode in the head burner, Would you be talking about, the steel heat sensor rod, that sticks inside the top burner head? It is a aprox. 1/8" in diameter and it is in an "L" shape, that runs into a small ceramic "sleeve like" section and has a wire, connected to it by a terminal. Does this sound like what you might be referring to? And there is only ONE of them."

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I just had my furnace cleaned it is a gas rheem. The service guy said it was overheated because of a#3 tube he said the furnace heat exchange is black. What can be do regarding this


I presume you're talking about a gas furnace, even tho the title says Rheem gas water heater. Either way, it works the same for both.

Any black coloring on the heat exchanger is *not* from overheating. Black is from a sooty flame caused by a mis-adjusted burner. (In fact, a sooty flame is less hot). There is an adjustable "air intake plate" for air to enter the burner where the gas enters the burner. A proper flame is made by adjusting this air opening so the proper gas/air mixture feeds into the burner. If the air vent is closed too much it produces a sooty flame.
The age of the furnace is the most important aspect, and that helpful to determine a likely condition of the heat exchanger and burners. Other than a badly adjusted flame, the main thing to watch for is a badly rusted out heat exchanger. But black does not mean rust.

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1 Answer

Furnace burner only coming on short time


The problem is inside the furnace. It can be several reasons. Look at the "Klixon" switch near the burner. It usually goes first. Then there's a thermocouple that has a sensor that must have the flame touching it in order to hold the gas valve open. The wiring diagram on the furnace has all the safety and operational components to check.

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1 Answer

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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I have a Rheem Classic Series Super Quiet 80 gas furnace. My problem is the furnace will turn on burner fires for a couple of seconds then burner turns off and fan blows. This cycle cotinues and eventualy...


Sounds like it could be a dirty or bad flame sensor.
When the burner lights ,there is a flame sensor in the flame and it is suppose to sense the flame and send a signal back to the control board which will keep the gas valve open, if it gets dirty or is bad it doesn't send the signal back to the board and the board will shut the gas valve off and after three tries it will lock out the furnace and you have to reset it to get it to work again.
The flame sensor looks like a wire and it's in the flame usually it will get gas deposits on it, then it won't work.
You can clean this sensor with an extra fine piece of steel wool, but before you attempt to do this DISCONNECT ALL POWER TO THE FURNACE.

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2 Answers

Rheem Classic Series Super Quiet 80 gas furnace problem


I have this same POS model. It is not the thermostat. this model is just garbage and cant wait to get something that works right. i have been fighting this thing for 4+ years now.

Dec 25, 2009 | Heating & Cooling

1 Answer

I have a Rheem Gas Furnace with an old analog thermostat (Wires conneected to terminals R and 4 for the thermostat). I went to install a Rheem digital and programmable thermostat and it indicated that it...


if you have 2 wire at thermostat Terminals at furnace that the thermostat wire attach to should be R & W if your new thermostat has R & W terminals is should work, an easy thing to remember is the red wire on R the white wire on W. If 4 wire at thermostat at furnace green on G, Blue on Y, red on R,and white on W same at thermostat If these do not match find a thermostat with these terminals

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Ruud furnace Model URKA A030jK08 Code opt 589


Flip the lower panel over and look for a wiring diagram. On that diagram there will be a diagnostic chart. Let me know what 5 blinks represent. Then I want you to read on.

On a call for heat, the 24 volt thermostat sends a signal to the control module. The control module will indicate a call for heat with a light on the control either blinking or remain solid depending upon model. The inducer (exhaust) blower will purge all gasses from the furnace and pressurize a pressure switch. Once the pressure switch tells the module to continue, the electronic ignition will energize and send 120 volts to the igniter. The igniter will glow and you will be able to see it if viewed thru the small inspection port. Once the igniter gets hot enough, it sends a signal to the module opening up the gas valve (24 volts). Either a pilot will come on or the burner tube will ignite then spread the flame to all burners. Lastly a safety sensor will be looking for a certain temperature within a few seconds and the furnace will continue to operate and the room air blower will turn on in a minute or two.

What could go wrong? The unit will not run if there is no signal from the thermostat (bad thermostat or broken wire), the control module does not sense a signal from the thermostat (bad control), the inducer does not energize (bad motor), the pressure switch does not close (blocked vent piping, bad switch, plugged condensate hose), the igniter does not energize (bad control, bad igniter), the gas valve does not open or there is no gas (bad gas valve, broken wire, no gas), the pilot does not light (dirty pilot), the burner does not light (bad burner, plugged orifice, not enough combustion air), the flame does not spread to each burner (bad flame spreader, dirty flame spreader, more bad burners), the flame safety sensor does not detect flame (dirty or bad flame spreader, bad flame sensor, broken wire, bad control), or the room air blower does not energize (bad fan motor, bad control).

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2 Answers

FURNACE CYCLING ON AND OFF ..


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1 Answer

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Replacing the gas valve with the original one may get you going. I surely suggest a professional service company for safety reasons and a thorough inspection. A 20 year old furnace is past it's normal life span.

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1 Answer

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Try cleaning the flame sensor. It is located right besides the last burner. Looks like a thick piece of wire. Take steel wool and gently remove the carbon that has built up. Should only take 4 or 5 strokes. Let me know how it goes after that. ken

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