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Pilot will not light

Gas coming from small hole below pilot jet gas outlet normal or replce jet

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You can remove that assembly and blow out the hole in the nozzle or orifice.

Posted on Dec 06, 2008

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Relight combi pilot light?


These are designed not to light once the thermocouple fails.the thermocouple has a small wire that positions in to the pilot light which checks the pilot is on and keeps the gas governed.once the temperature drops it shuts off the gas to prevent a build up of gas in a room where a pilot light has gone out.this is why you need to hold the button in on reignition to allow the thermocouple to heat up so the gas keeps open.
Try to relight by turning on the gas ....pressing down and holding the button for at least 10 seconds whilst firing the piezo to ignite flame.do not release gas button for at least 10 seconds then slowly release.if the flame on the pilot will not stay alight....then it is likely the thermo has failed.try cleaning the metal wire that is above the pilot jet.still no joy then it needs replacing.hope my comment is of help...please vote.

Feb 19, 2015 | Water Heaters

1 Answer

When I try to light the pilot, the flame light at the small hole on the outside on the pilot burner


You have a plugged pilot orifice. That small hole is basically an air intake for pilot when working properly, and when it gets a spider web or something in it, the pilot flame will burn rich (orange/yellow). When pilot orifice is plugged, that"s the next closest place for propane to escape, thus, flame . You need to either blow compressed air in to pilot tube end where flame is normally at, and hope it cleans debris out, or use a 3/8 and 5/16 wrench and disconnect pilot tube from end and remove orifice in pilot assy, and make sure small pinhole is cleared in center of orifice. Be careful when removing tube, as it is aluminum and can crack very easily, especially if older. The best thing to do would be to stop at RV store and get a new pilot tube and thermocouple assy, and install new. Not very expensive, and troubles should be over for years to come with regular servicing. New assy, comes with new orifice etc.

Sep 13, 2012 | RTO Atwood Water Heater - 6 Gal LP

1 Answer

I can't get the pilot light to light. The heater hasn't been operated for 6 months. I have gas at the heater. I have followed the instructions implicitly.


Hi,
The gas in the line may be stale or there is air in the line... make sure you have purged the line enough to get the good gas to the pilot...
Then check the pilot orifice...this is a very, very small hole in the part that the gas is to come out of....
Taking the pilot assembly can be very tricky and the hole is so small that even a small dust particle will plug it up....

Your problem is one of these two things... and yes it can be totally frustrating to work on this stuff!!

heatman101

Jan 21, 2011 | Water Heaters

1 Answer

The pilot light goes out. When I go to re-light the pilot and turn the temp for vacation to medium the flame goes out again.


The pilot light jet may have got a little bit of dirt or grit in it which is preventing it from keeping alight. Try probing the jet with a fine piece of wire to see it the blockage can be dislodged. You may have to unscrew the jet to clear it by blowing air through it. Make sure gas is turned off first before removing any parts.

The pilot light also has a thermocouple that allows gas to the pilot light while the flame is burning. If flame goes out it shuts gas off to the pilot jet. The thermocouple is bypassed by a switch during the initial ignition and once the thermocouple warms up after a minute or two of holding in the bypass switch, it should maintain the pilot. If, after cleaning, the pilot light keeps going out, it would seem that your thermocouple is faulty and needs to be replaced

Nov 26, 2010 | Rheem 40 Gallon FVR NATGAS Low WATER...

1 Answer

Pilot l.ight will not stay lit


The pilot light jet may have got a little bit of dirt or grit in it which is preventing it from keeping alight. Try probing the jet with a fine piece of wire to see it the blockage can be dislodged. You may have to unscrew the jet to clear it by blowing air through it. Make sure gas is turned off first before removing any parts.

The pilot light also has a thermocouple that allows gas to the pilot light while the flame is burning. If flame goes out it shuts gas off to the pilot jet. The thermocouple is bypassed by a switch during the initial ignition and once the thermocouple warms up after a minute or two of holding in the bypass switch, it should maintain the pilot. If, after cleaning, the pilot light keeps going out, it would seem that your thermocouple is faulty and needs to be replaced

Oct 20, 2010 | Whirlpool Water Heaters

1 Answer

I have a GE smart water heater model GG40T6A. the pilot light will not stay lit. what can i do?


The pilot light jet may have got a little bit of dirt or grit in it which is preventing it from keeping alight. Try probing the jet with a fine piece of wire to see it the blockage can be dislodged. You may have to unscrew the jet to clear it by blowing air through it. Make sure gas is turned off first before removing any parts.

The pilot light also has a thermocouple that allows gas to the pilot light while the flame is burning. If flame goes out it shuts gas off to the pilot jet. The thermocouple is bypassed by a switch during the initial ignition and once the thermocouple warms up after a minute or two of holding in the bypass switch, it should maintain the pilot. If, after cleaning, the pilot light keeps going out, it would seem that your thermocouple is faulty and needs to be replaced

Oct 08, 2010 | General Electric GE SmartWater Household...

3 Answers

PILOT LIGHT KEEPS GOING OUT.


If the pilot flame is weak, when the main burner is ignited, there can be enough 'whoosh' of air and gas to blow out the pilot. There may be a little of grit in the pilot valve jet hole restricting the flow, hence the weak flame. Try using a piece of fine wire to clear the obstruction. If that does not help the pilot jet will have to be unscrewed and cleaned with compressed air. Ensure the gas is turned off before attempting any maintenance.

Sep 13, 2010 | Reliance Water Heater #6-40-GBRS 40GAL...

1 Answer

Reliance gas water heater 640ycrs pilot light will not stay after 1 heat period replaced thermal couple has gas thermal switch


if water heater will heat a tank of water before the pilot light goes out you need to replce the gas thermostat

Mar 04, 2010 | Reliance & 30 Gal LP Gas Water Heater

2 Answers

No gas going to my water heater


A bad/dirty thermocouple or pilot safety sensor will prevent the main gas valve from opening up and allowing gas to the main burner and will prevent the pilot from STAYING lit.

A bad thermocouple indication is the pilot will light while you are holding down on the pilot start button (thermo-couple is over ridden) but as soon as you release the button the pilot goes out.

If your description of the problem is correct and you cannot even light the pilot even while holding down the pilot light button AND you have followed all the proper relight procedures I would suspect
a dirty pilot orifice or condensation build up in the gas trap.

If you can NEVER LIGHT THE PILOT follow the steps given below: if it lights and goes out when you release the button and you have a nice blue pilot flame the problem is the thermocouple or gas valve (most likely the thermocouple).

If the pilot is yellow and weak looking and the pilot shuts off when the button is released follow the following instructions also as a weak pilot indicates a blocked/dirty orifice and will not get hot enough to activate the thermo couple and presents as a thermocouple problem.

Turn off gas and remove the cap on the bottom of the trap (little stub of pipe that hangs down below the gas line usually on a tee). Drain any condensate out, reinstall cap being sure to seal threads with dope or teflon tape. Then remove pilot tube from the heater and scrub the small pilot tubes orifice. It is very small and plugs easily with debris, rust scale etc. You may need to probe it with a tiny wire to get it clear, if so do not damage or enlarge the hole by going gorilla with it. Once you are sure orifice is clear and clean re-install, turn gas back on and attempt relight sequence, you may need to do it several times to purge air out of system. While you are at it you should also give the thermocouple a good scrubbing, steel wool or scotch brite nylon pads will do just fine for this, you just want to clear it of carbon or any corrosion.

You should get a nice blue flame on the pilot>

If you still cannot get the pilot to light AT ALL you most likely have a gas valve problem and need professional help to diagnose and fix.

Nov 16, 2008 | Water Heaters

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