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Pilot going out

I can light the pilot, set the dial for the level I want and the burner will light OK.
After the heater gets up to the temp it's set to and goes out the pilot will fade out and extinguish. I can re-light the pilot again, holding it down until the sensor heats up, but when I set the dial the flame shrinks and goes out again. Once the heater has cooled down I can light the pilot and it will stay lit and cycle the burner again, but will shrink and go out once again after the heating cycle shuts down. I have taken the lines apart and blew them out, along with the pilot tube, to make sure they're not blocked with dust.No change, still does the same thing.

Any idea why?

Thanks,

Dan

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Sounds like a bad thermostat.I am not to familiar with this problem.
sorry i could not be more help

Posted on Nov 23, 2008

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I light pI lot and it stays lit burners light and reach temp but then burners wont relight to keep temp unless I tap gas valve..is it my gas valve


A lot of pilot lights have a thermal coupler... the pilot light must be lit for several min to open the coupler so the pilot light will not go out.... the newer systems use an electronic ignition and no pilot light and need power to autostart but the coupler may be gone if you are holding that pilot start button down for several min and the pilot light is still going out..ps.. leave it in pilot mode for several min after initial start up before turning turning full burner operation operation operation operation operation operation operation it will snuff out the pilot light.

May 18, 2016 | Water Heaters

Tip

Trouble shooting common gas water heater lighting problems


This covers just the basics on no burner flame or pilot outage issues on standard tank gas water heaters and does not pertain to tankless or instantaneous heaters. As always, safety first; if you do not understand what you are doing, do not attempt to make repairs on your own. This is just a guide to help you figure out what may be wrong.

1) Let's take care of the obvious things first. If you have a propane gas water heater, make sure you are not out of gas! Go to the tank, lift the lid, look at the % gauge. If it's pointing at 5% or less, you may be empty or about to run out of gas. If it says you have plenty of gas, make sure the gauge is not sticking and bang the lid down. If the gauge drops down to 5% or less, order a gas delivery.

2) Remove the panel on the water heater to view the burner. Is the pilot still lit? Yes, then make sure the control knob is in the "ON" position. Also make sure the temp dial is not on "Vacation" setting or set at a very low temp setting. Typical dial settings are at medium "arrow" selection or "A" selection.

3) Is the pilot flame out? If you smell gas, do not attempt to light. Turn gas off at shut off valve on gasline to water heater and call your gas co. Otherwise, follow the manufacturer's lighting instructions on the water heater to relight. Pilot still won't light? Then you may have a dirty pilot orifice that needs cleaned. Or if you were out of gas and just got filled, you may have air in the lines and lighting the pilot will take longer than normal to light. It's best to have the gasman light this when he is there to fill your tank. It's also possible you have a control that is locked out or defective, which will require a serviceman to repair or replace the control.

Let's say you get the pilot flame lit. When you release the button, does it stay lit? No, then you might not have held the button down long enough, Try again. Still goes out? Is the pilot flame a strong blue color and actually making the thermocouple red hot? If so, and it won't stay lit, replace the thermocouple. Or is it a lazy yellow flame? If so, it may have burn't the tip off the thermocouple and it will need to be replaced. This condition is caused by a dirty pilot orifice, which will need to be cleaned with a broach to prevent it from ruining the new thermocouple you install.

4) Ok, let's say you relight the pilot and get the main burner to light as well, but later they both go out again. This only happens, of course, after the service tech has left. With it still off, get a flashlight and look inside the access panel in the area above the main burner? Do you see a lot of black soot build-up? If so, this make be causing your problem. Have your water heater serviced. If no soot, then check for blockage in your vent. Look for a bird nest or even a dead bird. Your vent cap is either going through your roof or through a wall to the outside. You'll need a ladder to check either. If it has bends and elbows, check those out for blockage too.

5) No blockage? Sometimes a vent is installed wrong (like under an eave) or you are getting a strong down draft. Make sure your vent cap is still attached on top of your vent too. Strong winds can blow out the pilot flame.

6) Here's another test you can do, if the pilot and burner shut down. Relight it as you did before and with the burner lit, reinstall the access panel. Now light a match at the draft diverter (standard water heaters have these on top which connect the water heater to the venting) Blow out the match near the edge of the draft diverter and watch where the smoke goes. (Shining a flashlight there also helps you see the smoke better) If it gets pulled into the draft diverter, it's working properly, pulling outside air in. If the smoke gets pushed out, you have a drafting problem. To make matters worse, you are also allowing carbon monoxide into the home. Have your water heater serviced immediately. I also recommend having a carbon monoxide detector located on every level in houses that have gas or oil appliances.

These are just a few ideas to help you figure out your common lighting issues. There are other issues that I did not cover, which may require a repairman. I hope you find these useful. If you still have concerns, please ask away! That's why we are here!

on May 16, 2010 | Water Heaters

2 Answers

How to I start my heater


If it is this heater, then you must:

1- turn the toggle switch to the ON position.
2- Turn the gas valve dial to the PILOT position.
3- Depress the pilot button while pressing the ignitor until you see a flame. Continue to depress the pilot dial for about 30-60 seconds.
4- let go of the button, and the pilot flame should stay lit. If it does , then turn the gas valve dial to the ON position.
5- Set the temperature and your done.

Apr 27, 2011 | Jandy Lite 2 Natural Gas Pilot Light...

1 Answer

I have a reliance 805pv gas water heater..the pilot light is lit..I have no hot water.


OK, make sure your ON-Pilot-OFF knob is turned to "ON" after you light the pilot. Then make sure the temperature dial is not set at vacation setting. It should be set to atleast mid range between low and high at the "A" or triangle symbol, depending on what dial you have. It will take 20-30 minutes for the water to get hot, but the burner should come on right away after it has been relit. If not, you may have to call your local gas co to look at it. Douglas

Jan 02, 2011 | Reliance Water Heaters

1 Answer

Pilot will light, burner lights stays on for a while probably till it reachers temp then pilot goes out, its a rheem gaurdian 40 gal


This covers just the basics on no burner flame or pilot outage issues on standard tank gas water heaters and does not pertain to tankless or instantaneous heaters. As always, safety first; if you do not understand what you are doing, do not attempt to make repairs on your own. This is just a guide to help you figure out what may be wrong.

1) Let's take care of the obvious things first. If you have a propane gas water heater, make sure you are not out of gas! Go to the tank, lift the lid, look at the % gauge. If it's pointing at 5% or less, you may be empty or about to run out of gas. If it says you have plenty of gas, make sure the gauge is not sticking and bang the lid down. If the gauge drops down to 5% or less, order a gas delivery.

2) Remove the panel on the water heater to view the burner. Is the pilot still lit? Yes, then make sure the control knob is in the "ON" position. Also make sure the temp dial is not on "Vacation" setting or set at a very low temp setting. Typical dial settings are at medium "arrow" selection or "A" selection.

3) Is the pilot flame out? If you smell gas, do not attempt to light. Turn gas off at shut off valve on gasline to water heater and call your gas co. Otherwise, follow the manufacturer's lighting instructions on the water heater to relight. Pilot still won't light? Then you may have a dirty pilot orifice that needs cleaned. Or if you were out of gas and just got filled, you may have air in the lines and lighting the pilot will take longer than normal to light. It's best to have the gasman light this when he is there to fill your tank. It's also possible you have a control that is locked out or defective, which will require a serviceman to repair or replace the control.

Let's say you get the pilot flame lit. When you release the button, does it stay lit? No, then you might not have held the button down long enough, Try again. Still goes out? Is the pilot flame a strong blue color and actually making the thermocouple red hot? If so, and it won't stay lit, replace the thermocouple. Or is it a lazy yellow flame? If so, it may have burn't the tip off the thermocouple and it will need to be replaced. This condition is caused by a dirty pilot orifice, which will need to be cleaned with a broach to prevent it from ruining the new thermocouple you install.

4) Ok, let's say you relight the pilot and get the main burner to light as well, but later they both go out again. This only happens, of course, after the service tech has left. With it still off, get a flashlight and look inside the access panel in the area above the main burner? Do you see a lot of black soot build-up? If so, this make be causing your problem. Have your water heater serviced. If no soot, then check for blockage in your vent. Look for a bird nest or even a dead bird. Your vent cap is either going through your roof or through a wall to the outside. You'll need a ladder to check either. If it has bends and elbows, check those out for blockage too.

5) No blockage? Sometimes a vent is installed wrong (like under an eave) or you are getting a strong down draft. Make sure your vent cap is still attached on top of your vent too. Strong winds can blow out the pilot flame.

6) Here's another test you can do, if the pilot and burner shut down. Relight it as you did before and with the burner lit, reinstall the access panel. Now light a match at the draft diverter (standard water heaters have these on top which connect the water heater to the venting) Blow out the match near the edge of the draft diverter and watch where the smoke goes. (Shining a flashlight there also helps you see the smoke better) If it gets pulled into the draft diverter, it's working properly, pulling outside air in. If the smoke gets pushed out, you have a drafting problem. To make matters worse, you are also allowing carbon monoxide into the home. Have your water heater serviced immediately. I also recommend having a carbon monoxide detector located on every level in houses that have gas or oil appliances.

These are just a few ideas to help you figure out your common lighting issues. There are other issues that I did not cover, which may require a repairman. I hope you find these useful. If you still have concerns, please ask away! That's why we are here! Douglas

Sep 02, 2010 | Rheem Water Heaters

1 Answer

We have a rheem 30 gallon gas water heater / rn 1094a16941 -- the pilot light keeps going out - we have replaced the thermol couplier then it worked for a while and now it lights but won"t stay lit for...


Hello,
This covers the basics on no burner flame or pilot outage issues on standard tank gas water heaters. As always, safety first; if you do not understand what you are doing, do not attempt to make repairs on your own. This is just a guide to help you figure out what may be wrong.

1) Let's take care of the obvious things first. If you have a propane gas water heater, make sure you are not out of gas! Go to the tank, lift the lid, look at the % gauge. If it's pointing at 5% or less, you may be empty or about to run out of gas. If it says you have plenty of gas, make sure the gauge is not sticking and bang the lid down. If the gauge drops down to 5% or less, order a gas delivery.

2) Remove the panel on the water heater to view the burner. Is the pilot still lit? Yes, then make sure the control knob is in the "ON" position. Also make sure the temp dial is not on "Vacation" setting or set at a very low temp setting. Typical dial settings are at medium "arrow" selection or "A" selection.

3) Is the pilot flame out? If you smell gas, do not attempt to light. Turn gas off at shut off valve on gasline to water heater and call your gas co. Otherwise, follow the manufacturer's lighting instructions on the water heater to relight. Pilot still won't light? Then you may have a dirty pilot orifice that needs cleaned. Or if you were out of gas and just got filled, you may have air in the lines and lighting the pilot will take longer than normal to light. It's best to have the gasman light this when he is there to fill your tank. It's also possible you have a control that is locked out or defective, which will require a serviceman to repair or replace the control.

Let's say you get the pilot flame lit. When you release the button, does it stay lit? No, then you might not have held the button down long enough, Try again. Still goes out? Is the pilot flame a strong blue color and actually making the thermocouple red hot? If so, and it won't stay lit, replace the thermocouple. Or is it a lazy yellow flame? If so, it may have burn't the tip off the thermocouple and it will need to be replaced. This condition is caused by a dirty pilot orifice, which will need to be cleaned with a broach to prevent it from ruining the new thermocouple you install.

4) Ok, let's say you relight the pilot and get the main burner to light as well, but later they both go out again. This only happens, of course, after the service tech has left. With it still off, get a flashlight and look inside the access panel in the area above the main burner? Do you see a lot of black soot build-up? If so, this make be causing your problem. Have your water heater serviced. If no soot, then check for blockage in your vent. Look for a bird nest or even a dead bird. Your vent cap is either going through your roof or through a wall to the outside. You'll need a ladder to check either. If it has bends and elbows, check those out for blockage too.

5) No blockage? Sometimes a vent is installed wrong (like under an eave) or you are getting a strong down draft. Make sure your vent cap is still attached on top of your vent too. Strong winds can blow out the pilot flame.

6) Here's another test you can do, if the pilot and burner shut down. Relight it as you did before and with the burner lit, reinstall the access panel. Now light a match at the draft diverter (standard water heaters have these on top which connect the water heater to the venting) Blow out the match near the edge of the draft diverter and watch where the smoke goes. (Shining a flashlight there also helps you see the smoke better) If it gets pulled into the draft diverter, it's working properly, pulling outside air in. If the smoke gets pushed out, you have a drafting problem. To make matters worse, you are also allowing carbon monoxide into the home. Have your water heater serviced immediately. I also recommend having a carbon monoxide detector located on every level in houses that have gas or oil appliances.

These are just a few ideas to help you figure out your common lighting issues. There are other issues that I did not cover, which may require a repairman. I hope you find these useful. If you still have concerns, please ask away! That's why we are here! Douglas

Aug 17, 2010 | Kitchen Ranges

1 Answer

The pilot light on my gas water heater continually goes out. I can re-light the pilot and get it going. The gas burners goes on runs for awhile. I'm assuming when that when the temp hits the desired temp...


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The pilot assembly should look similar to the pic above. Depending on where you live, you may be required to hire a certified plumber to replace the parts. If not you can do it your self. Keep in mind if it's not staying lit you also need to check the thermostat and the thermocoupler before replacing the pilot assembly. There is a good chance it is just the thermocoupler going out. It is one of the first things to check when troubleshooting a pilot light problem with a gas water heater. A thermocouple determines if the pilot light is lit. If it's not lit, the gas valve fails. If that's the problem, replace the thermocouple.


  1. Shut off the gas valve on the water heater and the gas valve on the line near the heater. Remove outer and inner doors, and loosen the pilot and supply tubes and the thermocouple connections to remove the burner assembly.
  2. Step 2 Loosen the screw holding the thermocouple to the bracket. Remove old thermocouple. Bring it with you to the store to ensure you are buying the proper replacement.
  3. Step 3 Install the new thermocouple. Position the thermocouple so that the pilot flame heats 1/2 inch of the tip.
  4. Step 4 Reinstall burner assembly in the water heater. Tighten burner supply tube, pilot tube and thermocouple connections. Tighten thermocouple no more than a quarter turn more than hand-tight.
  5. Step 5 Turn on both gas valves. Check supply tube and pilot tube for leaks with soapy water. If soap bubbles, tighten connections to fix leak. Ignite the pilot light, and make sure the thermocouple tip is heating up. Replace inner and outer doors.

Jul 09, 2009 | Northern Tool Water Heaters

2 Answers

Pilot light will not light


you should have to push the dial or a seperate button in to manually open the pilot gas valve. If you find this not to be true and you have a spark either the pilot burner assembly needs to be pulled and cleaned.

Dec 18, 2008 | Heating & Cooling

1 Answer

Pilot goes out after heating cycle


Check regulator on the unit.
Check pilot unit on the heater
use soapy water to check for leaks if see bubbles turn off main gas supply valve.
always turn off gas supply before any checks or repairs are made
when all else failes call your local gas provider to check heater and gas supply

Nov 22, 2008 | Rinnai Desa Vent-Free Infrared Gas Heater:...

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