I have a vangaurd heater natural gas , older model vn2550ITB , everytime i get it lit, it shuts down a couple mins later , it seems to act like it isnt getting enough gas to keep the grids lit, i changed the, .thermal cupler, and it still isnt working right ..do you think you can help me figure out what the heck could be wrong with this thing , the weather is cooling off and i like to use this heater , ..
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I would question the Thermo couple. It pretty much runs the whole show. Inexpensive quick fix. It's the small tubing that is connected to the gas valve. The other end is a bulb that sits over the pilot flame.. Remove the old and match it up at the hardware store. Install new coupler ensuring bulb is directly over the pilot flame Common iten. The thermocoupler alks to the gas valve. If the pilot flame extinguishes (goes out) the bulb cools and shuts down the gas valve so the pilot gas feed doesn't permit raw gas to accumulate, avoiding the need emergency Services. . You will not get the heater to fire until the bulb is good and hot. The red push button ,when depressed will allow the pilot flame to be lit. Hold it down until the heater fires, indicating the T-coupler has reached its operating temp.Good Luck-Ned
simply replace the the thermo couple. Any home depot. Very easy.Be sure all doors are in place or it could cause the flame to pull away from the thermocouple. If the problems new, change it. 5 minutes literally. Shut off gas and get the correct legth(18,24,36,12 inches.
With FVIR protection: Get more fresh air to the unit. Clean the flame arrestor screen. Test and replace the thermocouple: http://waterheatertimer.org/How-to-test-water-heater-thermocouple.html Inspect and clean burner and combustion parts Test gas pressure, bleed air out of gas line. Replace gas control valve. Test draft air by lighting match and see if smoke is pulled into the vent pipe at draft hood on top of tank.
pilot light keeps going out! more then likely its the thermal coupling doing this. if bad it shut all gas to heater for a safety measure. just shut power off, then turn gas off and replace it. then you should be ready to go. to relight heater hold down on gas vavle knob in the pilot position, hold down and light it at the coupling where gas comes out. when it is lit, continue to hold down for 60 seconds. release knob very slow. then if its lit, turn to the run position. if flme goes out, wait at least 5 minutes to expel the gas fumes and turn to pilot and try again. good-day !
There should be a troubleshooting guide in the manual for the unit. If you do not have a manual you can obtain one at www.desatech.com , then go to "Wall Heaters" then click your model number. I know the thermocouple, gas regulator, and gas valve all share common symptons of what you're describing. For more parts check out Master Parts, as they carry a lot of the Vangaurd parts. ( 1.800.446.1446). I hope this helps!
If your persure is to high you are probally running propane in a natural gas heater. If this is a new heater take it back and get a new L.P. verson if not they make a conversion kit with new gas orfaces for the burner and a new gas block for the gas valve. if your tech dosen't know this get a new tech, this is a box full of fire next to your hause. Don't save money on the tech it can cost to much!
As a licensed plumber I will recommend now that you don't touch the heater. Gas is dangerous and leaks aren't easily found.
Everytime a gas heater is serviced the tradesman needs to do a gas check to see if all is working well. There are too many things that can go wrong, from a small gas leak to burnt gas leaking, all of which are lethal.
I can tell you how to fix it, but I won't, because it is too dangerous.
Getting a repair man will cost you, but not getting one may cost you your health or your life.