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My gas heater will light then once the house reaches temp on the thermostat the pilot light will go out and you can smell gas

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Turn it off and get a serviced person immediately. You should call your gas company before your domicile becomes pieces from the impending explosion. They will find the leak for you and probably recommend several companies that can repair it.

Posted on Nov 18, 2014

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Posted on Jan 02, 2017

  • 41 Answers

SOURCE: pilot light wont stay lit once heater shuts off/ light goes off randomly

Hi Watertec00,

I am not familiar with this heater but it sounds like it could be a blockage in the main gas line into the heater or perhaps a blockage to the pilot gas line and maybe starving for gas. Best bet first is to check the main gas line from the heater. Easiest way to do this is to remove it from the heater and blow it through with compressed air. Then try the heater again. If that doesn't fix the problem then you can try blowing compressed air down through the pilot line. Could be a little dirt creating a blockage there. Then try the heater again. If it still does the same thing then try removing the panels to expose the heater's piping. If you can remove the main pipe into the heater from the gas and blow compressed air through it it should clear any obstruction from both the main line and the pilot. If this doesn't work then I would think you have a more severe problem and will need to take it to your local Heater Repairer. Hope this helps.

Regards
Bryan

Posted on Dec 22, 2007

  • 234 Answers

SOURCE: Gas wall heater won't light

You need to bled the line longer and when you get lited hold down for a good minute.When the gas gave out ,there could trash in the line.I would take the line off and blow gas through it undtil you can smell it.

Posted on Mar 13, 2009

  • 1 Answer

SOURCE: pro comm natural gas heater, pilot keeps going out

The problem is likely to be either the thermal-couple (easily replaced) or a clogged gas orrifice. The clogged orrifice would require a bit more know-how then the thermal-couple and with gas appliances it would be best to hire someone who knows what they are doing.

Posted on Mar 21, 2009

Therinnaiguy
  • 1420 Answers

SOURCE: my gas furnace pilot light goes out after reaching

The room air blower should have no effect on the pilot unless there is a crack in the heat exchanger. Do you notice a change in the pattern of the main burner flame when the blower turns on? If so, you have major issues. If not, it could be a dirty pilot orifice or a weak thermocouple.

Posted on Jan 14, 2010

atocrxr
  • 135 Answers

SOURCE: Pilot light can light and stay lit if I hold it

You have a possibility of two problems;
First:You need to check the pilot, when you areholding the pilot knob in, is the pilot flame covering the top of the thermocouple-the metal rod that is near the pilot, it will have a copper tube or maybe 2 wires, running back to the main gas valve. If the flame is covering the top 1/8" of the rod, it is ok. (For Now)
If the above checks out ok, now we move to the "Tip Sensor", this sensor is usually bebind the screen near the pilot knob. It has two wires running to it, the sensor is about the size of a dallor coin, inside this sensor is a metal ball, that makes contact with the two contacts inside the sensor, while the heater is standing upright, if the heater tips over, the ball moves and breaks the contacts in the sensor, shutting off the heater. This is a safety switch in case the heater tips over, sometimes the contacts in the sensor get dirty, try tapping the switch, basicly getting the ball to move around,then try it.
The final step - "Trouble Shooting purpose only", take the two wires coming to the sensor, cut them about 2" away from the sensor, and twist them together, then try it, if it works, the sensor is bad, take the sensor out, and shake it for awhile, then put it back in, rewire it to original wiring, if it still doesn't work, you will have to replace the sensor, contact the manufacture.
Please rate me, if this has been helpful, it keeps us keep on trying to help, LOL.
Contact me back if you have anymore questions.
Sincerely,
Paul Gibson

Posted on May 15, 2010

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The thermocouple is not working correctly. sometimes you can clean the soot build up from it and it will work again. sometimes they just need replacing. the thermocouple is what the pilot light flame heats up when you turn on the heater. when the thermocouple gets hot it sends a 20 to 60 millivolt signal to the gas valve to activate the gas flow to the main burner.

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Problem is not thermocouple:
Thermocouple should be finger-tight plus 1/4 turn
Overtightening will short thermocouple against gas control valve, and solenoid switch will not open, and no gas will reach pilot once red button is released.
Tip of thermocouple has to sit in the pilot flame.
If pilot flame will stay on, then thermocouple is good.

Problem is not solenoid switch.
The gas control valve solenoid opens and closes gas supply to gas control valve.
On mechanical gas control valve, when you push down the red button to light pilot, then you are opening the solenoid and letting gas flow into gas control valve.
When heat is applied to thermocouple, a small electric current travels to gas control valve, and this causes solenoid to stay open.
If you extinguish pilot, then no current travels to gas control, and solenoid clicks off.
You can hear it click, and this is how you test it.
However, since you are getting gas to pilot light, then the solenoid is not the problem.

This leaves 4 possible problems:
1) Bad gas control valve thermostat.
http://waterheatertimer.org/pdf/How-to-replace-water-heater-gas-valve.pdf
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http://waterheatertimer.org/How-to-troubleshoot-gas-water-heater.html

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