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The gas was on when the pilot first went out. After replacing the Thermocouple I turned the gas back on before many attempts to relight the new thermocouple.

Well a thermocouple does not prevent the pilot light from being initially lit while holding down the pilot button. The thermocouple just keeps it lit after releasing the pilot button. So I am guessing ur lighting issue is not the thermocouple. So either no gas in line or you have a gas valve issue.

Mar 20, 2015 | Water Heaters

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Water heater can be added to any incoming water line, either on hot or cold.
Under-counter water heater located near tub will supply hot water just like ordinary household water heater. But it will not reheat water that circulates inside the spa tub.
Otherwise, a spa heater is made with electric element that can work with 120V or 240V. Water from tub circulates through tank that holds element. Element must be fully immersed in water.
To retrofit spa tub with this heater would require cutting water line near pump, running both ends of water line into tank with element.
Then of course you would need to retrofit adjustable thermostat to control when element is on. And integrate element operation into air control switch at tub that can override thermostat so element is not heating when tub is not in use.
Unless there is a pre-packaged kit to retrofit heater, I think adding heater would be difficult.

Jun 05, 2013 | Maax Crescendo - 100085-000 Bathtub

1 Answer

Bradford white u45036FRN pilot wont stay lit

1) Copy following link to troubleshoot by type of gas control valve with basic service manual for old and new gas control valve on unit:

2) Add a comment and say what you find so far.

Jan 21, 2013 | Bradford White 239-47463-01 ICON Natural...

1 Answer

How to replace thermocouple in 42v50-50f

Copy following link:

Rheem 42V50-50 is ordinary atmospheric-vent gas water heater with mechanical (non-electronic) gas control valve, which says that unit has ordinary thermocouple, and not thermopile.
Buy generic thermocouple from local hardware.

To replace the thermocouple you need to remove entire burner assembly from water heater, and have replacement Burner access door gasket on hand. 1-800-268-6966
Combustion door held in place with tamper-proof screws

Since the water heater problem may be more complicated than just the thermocouple, and water heater flame arresor screen may need to be cleaned, and burner parts cleaned, door gasket replaced, and gas pressure checked, and piezo electrode checked, it might be best to have qualified service technician do the work for $300.

Jul 28, 2012 | Rheem Water Heaters

1 Answer

Believe I need to buy a Rheem Water Heater Thermocouple. Where do I find them?

If thermocouple is from ordinary tank-type water heater, then it is a generic part with different lengths 15" 17" 21" 24" 30" available at hardware of home center.
I suggest reading manual for installation information, advisories, and required maintenance.

There are good utube videos on replacing thermocouple.
Tip of thermocouple has to be positioned in the pilot flame.
The heat on tip of thermocouple causes millivolts of electric current that travel back to the gas control valve and the electrical signal causes gas control valve to keep gas flowing down the pilot tube to the pilot light.
If pilot light blows out or if pilot tube is clogged and needs to be cleaned, or if gas valve has gone bad, then tip of thermocouple cools down and electric signal back to gas control valve causes gas control valve to shut off gas going to pilot.

When attaching thermocouple to gas control valve, it is finger tightened.
Be careful and do not cross-thread thermocouple. Just use your fingers to start the nut.
Finger-tighten thermocouple and then add 1/4 turn using small wrench.
The end of thermocouple has a small piece of insulation that isolates the electric current from body of gas control valve. If thermocouple is overtightened, the insulation is crushed, and electrical current millivolts short out and no signal reaches gas control valve, so gas control valve keeps gas turned off to pilot tube.

If this is a tankless water heater, then open following link with troubleshooting resources and contact information for Rheem.

Upvote the help.
And take advantage of fixya expert assistance live.
For a price, expert works with you while you work on water heater or any do-it-yourself project.
Fixya is always less expensive than a service call.

May 20, 2011 | Rheem 36" Water Heater Thermocouple Kit

1 Answer

Pilot hard to lite when lites stays on about 15 minutes goes out this is on reliance gas hot water heater 101

The thermocouple has gone bad or in this case is going bad to the point that it is useless.

The thermocouple is the pilot's, well, co-pilot! It is the electronic device that senses if the pilot flame is hot enough to ignite natural gas or propane fuel to the burner. If the thermocouple thinks it's safe, then it keeps open the main gas valve located in the pilot assembly. If the thermocouple does not sense enough heat from the pilot flame (such as when the pilot is out), then the thermocouple shuts off the gas valve to the burners.
How the Thermocouple Works
So what is this thing and how does it work? Well the thermocouple (technically called a thermocouple junction) is a device that contains two metal wires welded at the ends and placed inside a protective metal case. The thermocouple sensor is found at the business end of the pilot flame and is designed to be placed in the hottest part of the flame. The other end is connected to the pilot valve body. As the thermocouple heats up, it produces a small amount of electricity and when it gets hot enough from the pilot, send a signal to open the gas valve by using a solenoid operated by a 24 volt transformer. The thermocouple calls the shots, and by converting heat to an electrical signal, it allows the gas valve to open or close. Once the gas valve is open, gas is then constantly supplied to the pilot and as required for the gas burners (as called for by the thermostat). If the pilot goes out, then the thermocouple gets cold and produces no electric signal to open the gas valve's solenoid and the gas valve shuts off the gas supply to the pilot and burners. Neat huh?

Feb 04, 2011 | RTO W4 A.O Smith Gas Hot Water Heater...

1 Answer

Will not stay on geep going out

Will pilot lit then burner and after it does this with just pilot on is that when it goes out. If this is what is happening ,pilot going out,then I would first change thermocouple. The thermocouple is usually on the bottom left hand side of gas valve.It will look like copper wire about as thick as a pencil lead. Remove burner cover and trace thermocouple line to where it mounts on pilot light assy.Thermocouple should be held in place by friction.Remove thermocouple from gas valve by lossenjng retaing nut,reach in burner compartment and grasp thermocouple at base.using small amount of force pull thermocouple from pilot assy and remove.You can get anew one at most hardware stores. Try to get one close to the length you have. A little longer ok. shorter no.Reinstall being careful when you tighten thermocouple nut as it is made of brass and valve body is made of aluminum.Very easy to cross thread or overtighten and strip threads. Make sure thermocouple is properly plased by pilot. Light piloy and hopefully this will tke care of it for you. THANKS

Nov 14, 2010 | Reliance Natural Gas Water Heater Control

1 Answer

Pilot light goes out each time the jets stop heating

This is most likely a thermocouple problem. Try replacing the thermocouple. If it still does it then the draft from the fire is pulling so hard that it pulls the flame away from the thermocouple just after the flame goes out. readjust the way the pilot flame hits the thermocouple to keep it on the thermocouple...


Mar 21, 2010 | Little Giant Water Heaters

2 Answers

What component inline with thermocouple on assy 9003542:

The thermocouple connects directly to the gas valve. They're universal fit.

Oct 22, 2009 | Reliance Water Heater #9003531 NAT Gas...

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