Question about Reliance Water Heater #9003531 NAT Gas Pilot Assembly

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I can manually lite the water heater the first time and it will heat up but the next time it calls for heat, it will not turn on to reheat. I have a model 153.336465 Power Miser 6 Do yoiu think it is the Reliance Water Htr/State 9003531 Natural Gas Pilot Assembly For Natural Gas Water Heater

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Posted on Jan 02, 2017

  • 7 Answers

SOURCE: reliance gas water heater 640ycrs pilot light will

if water heater will heat a tank of water before the pilot light goes out you need to replce the gas thermostat

Posted on Mar 17, 2010

  • 32 Answers

SOURCE: reliance gas water heater, pilot will not stay

sounds like you have a worn thermocouple or maybe a blocked jet

Posted on May 04, 2010

Testimonial: "thanks for the info deaqling with it now"

  • 25 Answers

SOURCE: Model #606 640nort Reliance 30gal gas water heater

this is either the thermocouple lead or the uni control i would replace the thermocouple leed first, these parts can't be repaired they have to be replaced

Posted on Jul 14, 2010

packrat1948
  • 528 Answers

SOURCE: pilot hard to lite when

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?

Posted on Feb 04, 2011

SOURCE: Reliance 606 natural gas water heater - model

If I understand correctly, the pilot light is not staying lit.
You light the pilot and water in the tank reaches temperature.
Once hot water is gone, then pilot light has to be lit again.

Gas pressure is good, and gas is flowing.
Thermostat is working at high end because it cuts off heating.
Vent is working because tank heats up.
Air intake is working.

Gas control thermostat might not be reading low temperature. Replace gas control valve.
Pilot tube might be dirty. Clean burner parts and combustion chamber, and air intake, and vent.
Backdraft might be blowing out pilot. Check for constant updraft by running water heater 5 minutes, and then light match under vent hood and see if smoke goes up.
Very hot air can put out pilot, especially when water heater located in attic. Add ventilation.
Improper vent might have water dripping back down into combustion chamber and putting out pilot light and rusting out the parts. Inspect for rusted parts and water.
http://waterheatertimer.org/How-to-install-gas-water-heater.html#troubleshoot
http://waterheatertimer.org/pdf/Pilot-light-will-not-stay-lit.pdf

Posted on Aug 10, 2011

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The heater does not shut off when the faucets are turned off. It is intermittent and after turning the faucet on and off a few times it will eventually shut off. What the solution to fix this problem?


First, add a comment and describe which heater you have: tankless, tank, gas, electric, which brand, approximate age of installation, and what you have done so far.

Next would be to turn off all taps, and put ear on pipe and listen for water leak.

If cold water is running and hot is off, and single-handled faucet has crossover problem, then a water heater will continue to receive incoming water causing waste of energy
http://waterheatertimer.org/Crossover.html

Next would be to review product manual for troubleshoot, and required maintenance.
Next would be to call installer, if installation is new.
Next would be to call manufacturer and ask for name of qualified service technician in area, and check if your product is still under warranty.

If you have tankless computer water heater, and unit is older than 5 years, then imagine how well your 5 year old laptop computer works, and then install tank-type heater to avoid continual maintenance and failures:

http://waterheatertimer.org/How-to-install-gas-water-heater.html

Gene
h

Sep 13, 2013 | Bosch GWH 425 EF L Water Heater

1 Answer

No hot water - the light shows red. It has had problem in the past months but cutting the power off and back on seemed to reboot the computer. This time the light stays red.


Before calling service technician:
Click following link, the click product, then scroll to page bottom to tab that offers technical literature, and download service manual and operation manual.
http://www.hotwater.com/water-heaters/residential/hybrid/

Read the required installation and maintenance protocol to see if air filter has been cleaned regularly, or the condenser coil might be dirty.
Required maintenance can be done by service tech recommended by AO Smith.
Contact AO Smith to find trained person, and next time, do not install expensive water heater since all savings disappear with service issues.

Gene
h

Sep 08, 2013 | AO Smith PHPT-60 60 Gallon Voltex...

1 Answer

There is power to the system but when you turn water on elements do not come one and heat water. all phases have 238 volts to them. why will system not turn on and heat water


Do you have 3-phase water heater? Is this balanced or unbalanced 3-phase unit. Add comment and describe product in detail, including brand since i have some service resources for both types.
Or do you have ordinary residential split-phase 240Volt Bosch tankless computer that heats water, and has 2 or 3 separate elements, and a separate circuit breaker supplying power to each element? And testing across both hot leads coming from each breaker yields 238Volt?
Copy following link for Bosch tankless manuals, with brief troubleshoot section that does not provide detailed service procedures for repairing tankless computer:
http://waterheatertimer.org/How-to-wire-Tankless-electric-water-heater.html#manual
If this is new water heater, then call installer. If you installed yourself, then remove tankless and return to seller for refund.
Tankless computers require certain amount of water flow to activate computer sensors. Turn on Hot tap and listen to pipe to hear if water if flowing through hot pipe. Check for crossover:
http://waterheatertimer.org/Crossover.html
Clean water filter usually located just above where cold water connects to unit.
Delime tankless ... and use water softener. Tankless cannot be exposed to more than 11 grains hardness in water, or parts will fail within 2-3 years. Simply deliming tankless heat exchanger each year will not maintain full efficiency... although for typical family of 4, tankless comper water heater costs $100 more to operate than tank-type heater according to manufacturer's promo literature and independent studies.
Call local technician who specializes in fixing tankless computers. For plumbing problems call local plumber. These are two different things.
If tankless computer is older, then cut losses, and buy tank-type electric water heater at Lowes for $285 and make quick changeover and have hot water same day. Sell old tankless on ebay and cheat next guy, or sell at scrapyard for $3 per 100.
Gene
h

Aug 05, 2013 | Bosch PowerStar AE125 AE125 Whole House...

1 Answer

Install continuous flow hot water system


I dont know if any tankless that have that installed.
Because as soon as it detects water movement it starts heating and if you continuous movement it will heat all the time. If that happens then something is going give and it wont be pretty. With a tank type water heater it just recirculates back to the tank and get reheated as needed.

Jan 10, 2013 | Bradford White everhot outdoor tankless...

1 Answer

Rheem power vent heater will lite one time and go out after 5 minimutes. It tries to restart three time and then shuts down


Problem can be bad gas control valve, bad wire connections, combustion chamber and burner parts need cleaning, bad venting, air in gas line. Rheem manual recommends calling service technician.
Open following link for gas water heater troubleshooting resources and illustrations for cleaning:
http://waterheatertimer.org/How-to-install-gas-water-heater.html#troubleshoot
http://waterheatertimer.org/pdf/How-to-clean-combustion-chamber.pdf
Generic pilot light information:
http://waterheatertimer.org/pdf/Pilot-light-will-not-stay-lit.pdf

Open following link for Rheem gas water heaters to identify product and download manual:
Click on link next to image, next page opens, click on Spec/Docs to find typical use and care manuals and then read troubleshooting tips for your specific unit where it suggests calling service technician.
http://www.rheem.com/Products/tank_water_heaters/gas_water_heaters

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1 Answer

Basemnt flooded water heater wont stay lit ever since, taken out burner assembly severl times now stays on long enough to heat water then shuts down soon after.replaced thermocoupler and have to lite...


Sounds like the air intake is clogged, and pilot and burner tubes are dirty.
All manufacturers say that flooded water heater should be replaced and not repaired.

You can clean air intake and burner assembly, and then next step would be to replace burner assembly and replace gas valve thermostat to see if functionality returns.
Expense of replacing parts is about half the cost of new gas water heater from box store, and still no guarantee that old heater will work.
http://waterheatertimer.org/How-to-install-gas-water-heater.html#clean

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1 Answer

Noisy Rheem 16 instant hot water heater


About the only device in that heater that could cause the noise you describe is an electrically operated valve that controls water flow. Rheem is a better-than-average company so I would give them a call and describe your problem to them; I'll bet that they will be glad to tell you which part you need and supply it to you.
We had a heat pump system from Rheem that needed only the replacement of one large relay and the outside unit fan motor during more than 25 years of service and is still operating at age 30 in our former home.

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1 Answer

Pilot Light problem


By controler I am guessing you mean gas valve? The next step, and I am not sure the water heater age rates this ,is to replace the gas valve. 

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1 Answer

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Unless your AO is a high recover it will take a while for it to fill up with the water that you have used then reheat the water in the tank.

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