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.
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How many degrees before it reaches desired temp, does it shut off? A thermostat is designed to shut the furnace off a couple/ few degrees before it reaches set temp. It has what is called a heat anticipater, which shuts the burner down, and lets the blower use the remaining heat from the heat exchanger to bring it up to desired temp making it more efficient. If it is more than a few degrees, replace the thermostat. You can jump out the red and white wires to confirm the faulty thermostat. If by doing this, the furnace never shuts down, until you separate the red and white wires. That confirms a faulty thermostat. Hope this helps someone.
For (fire) safety, there is usually a thermostat that will turn off the gas if pilot light goes out.
So when you try to light the pilot you will have keep press & hold the pilot gas supply for at least 10 sec until the thermostat is heated up. Then only when the pilot light stays on continually, can you turn on the burner.
Forget about changing to a High pressure regulator!
Usually thats a sighn of a bad thermocouple,thats the copper tube that goes from the gas valve to the actual pilot assembly it senses that the pilot is burning and allows the main burner to light. If there is no pilot lit the bur will not light. Its there to keep you home from exploding from a release of gas with no pilot. The good thing is that most ofthem are universal and most water heaters use the same one. And you can buy one for a water heater at lowes or home depot for about ten bucks. If you get one thats longer than the origional thats ok because you can just coil it in a circle just be carefull and dont kink the tube,if you do kink it you must get another one. even if you straighten it. It wont work. Hope that gets you going and warm.
This stuff will safely clear the dust and cobwebs and any other junk in there that would make the pilot think that oxygen is low in the room. The air we breathe is 21% oxygen. That pilot is set to push the flame out at 18% oxygen levels. if the pilot is dusty the flame will be extinguished by the safety mech. Rust buster safely flushes any contaminants out without harming the innards of the pilot safety. Use shop air and blow it out and get a great result also.
There should be a removable panel on the bottom front. Remove this panel and you should see gas valve with two lines going into combustion chamber. The larger of the two will be for burner and the smaller to the pilot light. There may be lighting instructions on the inside of panel,or on front of burner compartment. If not look at gas valve and see if you can see where it is marked off pilot and on. Turn thermostat to lowest setting and gas valve to pilot ,locate pilot light and hold match to it while you depress pilot button . Pilot should light. If it does hold button depressed for 1 to 2 mins. Release pilot button and if pilot stays lit turn valve to on. Turn thermostat up to desired setting and see if burner comes on. If it does you should be done. Put cover back on. If pilot light does not stay lit or burner won't light I Would recommend you call a service tech as there are several things that could be wrong. Hope this helps you.Thanks
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.
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
Dan, Since you just had the tank filled and the heatewr installed a tinty piece of trash could have entered the pilot orfice. Un do the lower floor panel take off the pilot assy. Blow out the small pilot orfice. Blow reverse from normal gas flow to unlodge the debre. Re asemble and light.
If this dosen't work It may be the pilot air intake is too open causing the pilot to blow itself out.If thats the case close off the air adjustment some. It will be located behind where the flame exits the pilot orfice.