Question about Whirlpool 6th Sense 40-Gallon 6-Year Tall Gas Water Heater Natural Ga

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Whirlpool pilot light wont stay lit

Pilot light wont stay lit. replace the control valve, replaced thermocouple burner unit, still didn't cure problem. does leaving the fan switch unplugged effect the millivolt amperage on the thermocouple? this model has the switch but not the fan installation

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Posted on Jan 02, 2017

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SOURCE: pilot won't stay lit

Possible thermocouple is defective. The thermocouple is heated by the pilot itself, the theory behind this safety design is so the main burner cannot come on, if the thermocouple won't stay hot, it reduces the chance for a huge gas buildup in the burner compartment and possible explosion.

I have also seen cases a pilot would not stay lit if the flue for the heater is blocked by a spider web, bird nest or other obstruction.

Check and make sure the flue/vent is absolutely clean and clear, if it is, then the thermocouple may be defective. If you have an electric pigtail on the thermocouple, the problem may be the electronics or circuit board.

Here is a link to a photo of a thermocouple
https://www.centraltrailer.com/cart/images/2631-3481.jpg

Posted on Dec 22, 2009

Testimonial: "It was a bad thermocouple on an 8 month old water heater. Mfgr sent a replacement. I installed. Problem solved. Thanks for your help."

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SOURCE: pilot light wont stay lit

This usually means that you need to replace the thermocouple

Posted on Jun 28, 2010

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SOURCE: pilot lite went out and

Hi. Before you go to the expense of a new gas valve , a correctly adjusted pilot flame is steady and blue, and stands between 1/4 and 1/2 inch high. If the flame goes out repeatedly, it may be getting too little air; if it's yellow at the tip, it's getting too much air. To correct either condition, turn the pilot adjustment screw slightly, as directed by the manufacturer.

Joe

Posted on Nov 10, 2010

  • 5245 Answers

SOURCE: I have a whrilpool water heater model fg1f404053nov replaced the thermocouple, stays lit for a couple of days and goes out....change out the gas vavle ???

Resources for Whirlpool/Craftmaster gas water heater:
http://waterheatertimer.org/How-to-troubleshoot-gas-water-heater.html

Problem might be diminished air supply or bad venting. Clean the air intake located on bottom of water heater using compressed air or feather duster. Air intake screen is series of openings as wide as razor blade and can easily clog.
Clean the combustion parts and burner. Bleed air/water out of gas line. Check gas pressure.
Check for pilot and venting issues on link above, including tight house, and other gas appliances and vent fans pulling draft down the water heater vent pipe, etc.
Also see service manuals for each type of gas control valve, and replacement steps for each type.

Posted on Mar 16, 2013

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1 Answer

Richmond gas hot water heater. After I light pilot and main burner why does it flame out in 15 seconds?


If you had to light the main burner manually, something is wrong. Once you light the pilot and it stays lit, the flame heats the thermocouple to open the gas valve and fire the main burner. Either or both of the components you replaced could be defective.

Sep 10, 2015 | Water Water Heaters

1 Answer

My whirlpool 50 gal natural gas water heater wont stay lit?


Are you sure the pilot is heating up the thermocouple? Make sure the flame is close enough to the thermocouple. Also make sure the thermocouple is seated properly in control valve. Try unscrewing and resetting it back into place.

Feb 10, 2013 | Whirlpool Water Heaters

1 Answer

Water heater burner wont light


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
2) Inadequate gas pressure. Call gas company.
3) Dirty combustion parts. Clean the burner with wire brush and water.
4) Clogged air intake on FV water heaters: Rheem FV gas water heaters have glass vial that will break if combustion is slowed by clogged air intake.
http://waterheatertimer.org/How-to-repair-Rheem-TRD.html
http://waterheatertimer.org/How-to-troubleshoot-gas-water-heater.html

Oct 06, 2012 | Rheem 40 Gallon FVR NATGAS Water Heater 6...

1 Answer

We have an atwood lp gas water heater 6 gallon g6a7 white rogers control. The pilot lights but when we turn it to on it goes out, even after holding it up to a minute. It was running fine, we thought we...


If pilot stay lit, then thermocouple is working.
If pilot will light, then you have gas. If pilot goes out when pilot button is released, then thermocouple is next suspect.

Thermocouple tip must sit in pilot flame.
The pilot light heat applied to two different metals inside thermocouple causes small current.
The current travels back to gas control valve through copper line.
If the gas valve receive this current, then a magnetic switch stays open and allows gas into the gas control valve.
The magnetic switch is on the end of the red button you push down when lighting pilot. Essentially the red button is an override to the magnetic switch.
If the gas control valve does not receive the current, then the magnetic switch does not stay open when you release the red button.
When replacing thermocouple, note that it is not screwed very tight into the gas control valve. Finger tight + 1/4 turn. If it is overtightened, then the small thermocouple current shorts out against the gas control body.

Sep 01, 2012 | Water Heaters

1 Answer

Reliant 501 Natural Gas won't stay lit


Reliance water heater?
Thermocouple is good if the pilot stays lit continuously.

501 is older model. Unknown if this unit has FVIR protection and sealed combustion chamber or open air intake on front of unit.
http://waterheatertimer.org/pdf/Reliance-2006-Service-Handbook.pdf

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.

Aug 20, 2012 | Water Heaters

2 Answers

I have a 40 gal. Whirlpool Water Heater and the pilot light will not stay on. I light it, but it will not hold (stay on) The heater was purchased in Aug 2003. Model No. FG1F4040SNOV. Any ideas?


The thermocouple has gone bad.
You will need to replace it. The video at the link below is a good overall view.
I would use soapy water for the leak test mixed at about 90 to10 (soap to water.
Also when you have the assembly removed clean the area with a vacuum and clean the assembly also.

Take the old thermocouple out before you go the the store to replace it as the do come in different sizes/lengths


http://videos.howstuffworks.com/discovery/34524-gimme-shelter-replacing-a-thermocouple-video.htm

Feb 03, 2011 | Whirlpool Water Heaters

3 Answers

Pilot light on water heater wont stay lit


The thermocouple has failed. It is the temp probe that goes from the pilot lite burner area to the control valve. Go to your local plumbng repair shop and buy one. Most appliance parts stores have them also. Take the old one with you and they will hook you up with an exact replacement. They are not that hard to change. Usually a nut or 2 screws in the temp bulb area at the burner end and a nut that threads into the control valve.
Make sure before you install the new one that the area where it mates to the gas valve is clean. Should be about a 20 min job including clean up with replacement parts in hand.

Jan 23, 2010 | Rheem 40 Gallon FVR NATGAS Low WATER...

1 Answer

I don't know how to restart my old bosch water wizard 10p, pilot light has gone out.


get a long stick match, a flashlight remove lower inspection cover, find thermocouple and pilot light will be next to it,turn gas valve to pilot light and hold down,stick the match in by thermocouple till the pilot lights and hold valve down till pilot stays lit,this may take a minute or more,then release gas valve and see if pilot stays lit, if not retry,if it wont stay lit,the thermocouple is defective and needs replacement

Jul 12, 2009 | Bosch & Tankless LP Hot Water Heater

1 Answer

The pilot light on my gas water heater continually goes out. I can re-light the pilot and get it going. The gas burners goes on runs for awhile. I'm assuming when that when the temp hits the desired temp...


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The pilot assembly should look similar to the pic above. Depending on where you live, you may be required to hire a certified plumber to replace the parts. If not you can do it your self. Keep in mind if it's not staying lit you also need to check the thermostat and the thermocoupler before replacing the pilot assembly. There is a good chance it is just the thermocoupler going out. It is one of the first things to check when troubleshooting a pilot light problem with a gas water heater. A thermocouple determines if the pilot light is lit. If it's not lit, the gas valve fails. If that's the problem, replace the thermocouple.


  1. Shut off the gas valve on the water heater and the gas valve on the line near the heater. Remove outer and inner doors, and loosen the pilot and supply tubes and the thermocouple connections to remove the burner assembly.
  2. Step 2 Loosen the screw holding the thermocouple to the bracket. Remove old thermocouple. Bring it with you to the store to ensure you are buying the proper replacement.
  3. Step 3 Install the new thermocouple. Position the thermocouple so that the pilot flame heats 1/2 inch of the tip.
  4. Step 4 Reinstall burner assembly in the water heater. Tighten burner supply tube, pilot tube and thermocouple connections. Tighten thermocouple no more than a quarter turn more than hand-tight.
  5. Step 5 Turn on both gas valves. Check supply tube and pilot tube for leaks with soapy water. If soap bubbles, tighten connections to fix leak. Ignite the pilot light, and make sure the thermocouple tip is heating up. Replace inner and outer doors.

Jul 09, 2009 | Northern Tool Water Heaters

2 Answers

I have replaced the control valve and thermocouple but burner wont stay lit. when burner shuts off so does the pilot


Thermocouple is probably not adjusted in to the pilot flame correctly, readjust and try again, if that does not work replace the thermocouple, not all brand new thermocouples are good right out of the bag

Jul 01, 2009 | Rheem 50 Gallon FVR NATGAS Water Heater...

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