Question about Sterling RF30 Natural Gas Garage Heater

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Sterling overhead garage furnace Main burner won,'t lite\r\ni replaced the the thermocupler no help. The pilot lites is on the fan comes on but nothing on the main burner?

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You have two sencors for this heater hi limit and low limit try jumping then out one at a time see if this lights

Posted on Mar 27, 2011

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Posted on Jan 02, 2017

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PILOT LIGHT COMES ON BUT WHEN YOU TURN THE KNOB TO ON IT DOES NOT LIGHT UP THE CIRCLE PLATE IN THE HEATER. IT JUMPS AND THE FIRE COMES OUT THEN IT GOES OUT.


I'm not sure what unit you are troubleshooting but if the main burner is igniting and that main burner flame is blowing out the pilot flame, it's possible the pilot flame orifice needs to be cleaned. The orifice can get stopped up and produce a weak pilot. And I've seen a pilot lite, but be blown out by the combustion of the main burner igniting. Now you stated IT JUMPS. If you mean the pilot flame jumps, as if it gets large then weak and goes out, then the gas valve is giving you trouble and may need to be replaced.

Mar 09, 2017 | Heating & Cooling

1 Answer

Polit lite burning but furance wont ingite theromsat ok


flame sensor (ex. thermocouple) is not sensing pilot flame so it will not allow main gas valve to open

Nov 24, 2013 | Sterling Heating & Cooling

1 Answer

Turn main furnace switch on, combustion air fan comes on and main circulation fan comes on. About 40 seconds later the igniter lites, two burners closest to the igniter fire up and immediatly snuff out....


Hello, if all the burners are not firing up then they must be cleaned out, usually dirt gets in the crossover parts of the burner and the gas cant flow to all the burners and therefore the flame sensor will turn off the furnace for safety. Clean the burners out this should fix the problem.

Feb 25, 2011 | Heating & Cooling

1 Answer

Pilot stays lite but fan comes on without burners lighting


On older systems the fan is controlled by a time delay relay which will turn of the blower after a preset time when a call for heat is present regardless if there is a burner function or not.
Need to check why the main gas valve is not energizing, there are to many configurations for a complete diagnostic without further info, Model, Brand etc.

Feb 25, 2011 | Dayton Gas Furnace Heater

1 Answer

Pilot light goes out when gas turned on


I am assuming that you are saying that after you have pushed the pilot knob down and the pilot lites and stay lite and then you turn the knob to turn it to ON the pilot goes out...... Then the Gas Valve is bad and will have to be replaced....... Or if you are saying that the pilot goes out when the burners come on then you may need to replace the Thermocouple because the main burner flame is pulling the pilot flame off of the thermocouple and it is weak and will shut the gas off.... Or You could have a cracked heat exchanger that when the burners are on and then the blower comes ON and is blowing the flame around and blowing the pilot flame off of the thernocouple......which will shut the gas off....and then you will need a new furnace or New Heat Exchanger...... These are the most common problems Hope this helps.....

Feb 16, 2011 | Heating & Cooling

1 Answer

I have a Sterling garage furnace,pilot is on ,but main burner will not light.


Be sure you turned the Control knob from Pilot to ON. Without doing that the heater will not turn. If that's not the problem, the Thermopile may need replacing. Also, check the volume of gas at the heater. It should be a minimum of 5 to 7 water column inches. If it has a wall thermostat, be sure the wires are correctly installed at the heater and the wall thermostat and the it's turned up higher than the ambient air temperature in the garage. If this is an older installation, be sure the exhaust vent piping is not blocked.

Feb 09, 2011 | Sterling RF75 Natural Gas Heater (75,000...

1 Answer

I have a Dayton furnace in my garage. It is well over 20 years old and it is a gas one. Long and narrow with blower on the top and burner on the bottom. Last year I had someone come to look at it because...


I would check and see if the heat exchanger is not spilt and the blower on top is blowing out the pilot .Also clean pilot and check thermocouple .

Mar 13, 2017 | Dayton (3E386) Heater

1 Answer

Heil 75kbtu gas furnace 80% efficiency installed winter 2004-2005 timeframe. the exhaust fan comes on and the green lite on the valve flashes green but the unit wont fire. a service tech asked if the pilot...


if it has a pilot, you can follow the pilot tube from the gas valve back to the burner assembly and find it. It may not have one and if this is the case, the air flow switch is supposed to close when the inducer fan comes on . If the flue is clogged, condensation in the bottom of inducer fan(would hear cracking). then after the draft safety switch is closed,the gas vavle will get 24 volts and allow the gas valve to open

Oct 27, 2009 | Cross Furnace Draft Inducer Blower 115...

1 Answer

Pool Heater Light main burner then goes out


take millivolt reads while main burner is on.i suspect you will see a drop in voltage until you get to point where it will no longer operate burner(around 200mv).if this is the case you probably have poor pilot characteristics due to dirty pilot,pilot out of adjustment ,obstruction or insufficient gas pressure

Jun 21, 2009 | Lite On Laars Lite 2 Heaters: 250,000BTU...

1 Answer

Coleman Furnace


Based on the info you have given here, I am going to make some assumptions. In "cleaning out all the components" you cleaned the air filter or changed it, cleaned the duct-work, and the intake combustion chamber? When the "furnace stays lite" the pilot and the main burner stays on? Lastly, when it "continues to blow cold air" is this when the main burner is on after long periods of time? If the answers are all yes, then maybe some of the ducts have come off, or the burners aren't working correctly.

Nov 08, 2007 | Goodman GMS90703BXA Heater

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