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Turn off the gas supply and unplug the heater.
Remove the control knob and check for any debris or damage.
Clean the control knob and the area around it with a soft cloth.
Reattach the control knob and turn on the gas supply.
Turn on the heater and check if it works properly.
If these steps don't work, then it's best to contact a professional technician
There are a few potential issues that could cause a gas furnace to light but not stay lit when the control knob is released. Here are a few things you can try to troubleshoot the problem:
Check the gas valve to make sure it is open and functioning properly.
Check the gas pressure to the furnace. If the gas pressure is too low, it can cause the furnace to go out when the control knob is released.
Check the thermocouple for proper installation and alignment. The thermocouple should be seated securely in the pilot assembly and should be properly aligned with the pilot flame.
Check the pilot assembly for any debris or obstruction that may be causing the problem. Clean the assembly as needed to remove any debris.
Check the control valve for proper operation. If the control valve is not functioning properly, it may not be able to supply the necessary gas to keep the furnace lit.
First locate where to light pilot. You can do this by following thin aluminum colored tubing from control valve to inside heater.In general on top of your gas control valve is a knob. Turn indicator of this knob to pilot and depress knob. This will start gas flow to pilot at end of thin tube. Hold this knob in the depressed position and light pilot. DO NOT release knob for 30 -45 seconds. Then release knob and pilot will remain lit. Then turn knob to on position. If pilot will not stay lit you may need a new thermo coupler, which senses heat from flame to keep pilot gas flow open.
Good luck
From the Owners' manual:
LIGHTING
1. Before attempting to light this appliance, the door if so equipped, shall be open.
2. Turn the appliance manual gas shut-off valve to the OFF position.
3. Turn the combination gas control knob to the OFF position.
4. Turn the thermostat control to the OFF position.
5. Wait 5 minutes.
6. Turn the appliance manual gas shut-off valve to the ON position.
7. Turn the combination gas control knob to the PILOT position.
8. Light the pilot with a match while depressing and holding the combination gas control knob until the pilot remains
lit upon releasing the gas control knob.
9. Turn the combination gas control knob to the ON position.
10. Turn the thermostat control knob to the desired temperature to turn burners ON.
11. Ensure that the door is closed during operation.
12. For complete shut-down, repeat steps 2, 3, and 4.
It won't turn any further until the pilot is lit and stays lit.
If this is a standing pilot system, turn the gas valve to pilot position. push in the knob & hold while lighting pilot...keeping holding knob down for a minute... this will pick & hold the gas valve. Let go of the knob & see if the pilot stays lit, if it does, then turn the knob to on position & the furnace should start if there is a call for heat from the thermostat
TO LIGHT THE PILOT
1.Open the door.
2. Turn the thermostat OFF The thermostat is located
behind the door.
3. Push the gas control valve knob and turn to OFF. Wait 5 minutes for unburned gas
to vent.
4. Push and turn gas control valve knob to the "L" in PILOT.
5. While still holding the knob in, light the pilot with a lit flame. Continue to depress the
knob until pilot remains lit when knob is released. If the pilot does not remain lit,
repeat step 3 through 5.
6. Depress and turn gas control knob to ON
Hi, follow what I say and it is very easy. The knob that says off, on, and pilot, is where you need to start. You don't want to turn it off now, as its been off for awhile now. Turn the knob slowly pushing down on it until you fill it go down. The knob will go down believe me. When this happens, keep holding it down as this is what starts the gas to the pilot which is back under the burner, under it. Just take a flash light and you can follow the aluminum tubing back and where it stops is where you light it with something long with a match in it or a small rolled up paper. Keep the knob down the whole time you are lighting it. When it lights, keep the knob pushed down for about another minute. Then slowly release the knob and the pilot should stay on. Once you have it on, turn the knob to on, not off. If you turn it the wrong way, it will go off and you will need to start over again. Once it stays on by itself, turn your thermostat up for heat and the burner will light and come on. Just remember that the pilot where you light it is where the tubing goes back under it, as the pilot gas goes through it. You will need a light. Look at the knob with a good light and it will tell you which way to turn it. In the pilot position, the knob will press down to let the pilot gas in, and you can reach back and light it. Then turn knob on. Pilot should stay light. Turn on thermostat and it will fire up. Let me know how it goes. You may have to try a couple of times. Sincerely, Shastalaker7 A/C, & Heating Contractor
the white rodgers gas control needs to be replaced; the way it works is: the thermocouple opens the pilot gas circuit and, holds it open when it heats up by creating a magnetic field in the gas control then: when you turn the knob on the gas control to "on" a valve inside the gas valve opens the main gas circuit and, electricity supplied by your RV keeps it open. the main gas coil inside the gas valve is defective and, can not hold the main gas circuit to the burner open anymore.
On standing pilot ovens the maker uses a safety device to kill the gas in case the pilot blows out. As long as the pilot is lit the gas safety magnet hold the gas flap open inside the safety valve.To save energy the pilot has 2 flames. The standby pilot keeps the cooper/nickel probe/sensor warm so the oven will light faster, the 2nd pilot is much larger, only appears when the oven control is turned on and this is what opens that valve. So when you turn the oven knob on the gas leaves the control and goes downtown to burner land. If that pilot is lit and that slow opening flap inside that valve is open, then the gas will enter the burner tube and ignite when it hits the pilot. Pretty slick ain't it? So what can go wrong? With age the flap inside the safety valve will wear out, get weak, work a little, then take forever to light and eventually just goes bye bye. When you get ready to replace the valve it ain't gonna be adjusted exactamundo, you gotta tweak it. To do so after bubble testing for leaks and lighting the pilot you turn it on and observe the flames. It needs to be not more than half way up the flame spreader. If it is to small of a flame it will take forever to bake even a pie shell, if it is too much their could be burned bottom and in some cases fire hazards. OOPs.
Some of the models require you to push in the oven thermostat knob to set the pilot if it blows out. So try pushing in the knob and hold it while lighting the pilot. When the pilot lights continue to hold the knob in for about a minute. When you let go of the knob the pilot should stay lit. If it does not stay lit then try it one more time. If it continues to go out the thermocouple or aso might be bad and will need service.
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