Piliot light goes out - Water Heaters

faulty thremocouple,

turn gas off the then back on then light

the piliot light can not be adjusted, it is what it is,, the only ones that can be adjusted are from back in the 60's where they had a seperate gas line off the primary gas line,, you might have to much gas pressure and might have to have a regulator installed

a tankleess water heater doen's have a piliot? but check the vent outside make sure nothing is blocking it, if it detects the exhaust thru the cold air intake it will shut off and over heat, other then that it would have to be the control board

some times the wire for the ignitor will get burned inside the chamber, if this happens you will not get a spark and will need a tech, but turn the gas valve to the piliot position hold down the button on the gas valve while clicking the electric ignitor button, look thru the site glass towards the left side of the burner assembly while doing this, if there is no spark it will have to be taken apart and replace the spark ignitor, not a big job you just have to make sure the seal on the burner cover doesn't tear or get damaged

the large burner sits on a cradle in the center of the tank, the piliot light connects to the burner assembly make sure the opening is facing the right way toward the burner, the thermocoupling should slide through the hole and sleve for it and should be pushed all the way till you feel it click, put it in vary carefully, sitting the asembly on it's perch, then line up the door and slowly push it all in at one time, making sure that the burener is level and is directly on it cradle, the door will line up pu the nuts on the screws pull it in evenly so there is no gap on either side, if there is any air gap it will not light, nor will it stay lit, do not touch the thermocoupling the oils from your hand will get on it and give it a false reading and will not light

turn the gas valve button to piliot position, push it down and hold it, click the ignitor to light it... look thru the site glass to see the spark all at the same time, if it lights hold the button on the gas valve down for 30 seconds, let it up if it doesn't stay lit you need either a thermo coupling or a gas valve thermo coupling would be the first choice, the is also a filter around the bottom of th tank near the floor it needs to be clean that is the only soirce of air to run the heater

there is a screen around the bottom of the unit? if so take it off and clean it,, does this unit have a self ignitor, or is it piliot? make sure your flue is clear so the unit is not over heating,, make sure on the power vent that the filter is clear also,, does the fan come on before the gas ignites, if not the circuit board is going bad the fan should start first to omit the gas fumes

years after the problem..... i find this link. relevant for future people i suppose and definately better than the previous answer which is not applicable at allravenheat.co.uk/pdf/manuals/LS80printV3.1.pdf

change the gas valve, if the thermocoupling works and the piliot stays lit then it has to be the gas valve check to make sure the screen is clear also,, you said it's propane, check to make sure it is all the way turned on, and has the right pressure it might have a bad regulator on it, but will let other things in the house run good luck