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I have an A.O. Smith water heater. The ignition devise will not light. Any suggestions?

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How old is the heater. more than likely it is the thermocouple. if the unit is 2-3yrs old, call a professional

Posted on Nov 26, 2008

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A.O. smith model fpsh50 water heater has smelly water i know its the anode rod and it's on top of the tank but where and how to take it out


Hi and welcome to FixYa, I am Kelly

Use this link to locate your EXACT model.
http://www.hotwater.com/resources/product-literature/parts-lists/
There are 6 different types of FPSH50
270, 271, 270E
235
236, 237
250, 251
251, 252
260, 261, 261E

Download the manual for your unit. The anode rod just unscrews CCW from the fitting on the body of the hot water heater.

I checked the 250, 251 model

Using 3 and 9 o'clock for the plumbing connections as a reference, the anode would be at the 6 o'clock position under the metal cap in the top.
The part number for your anode is in italic bold below.FPSH50 -250. -251

1 ......... Anode - Aluminum (.750" dia.) Standard Models.......... 43817-25 ................... 43817-25 ................. 43817-38

1 ......... Anode - Aluminum (.840" dia.) Optional ...................... 180618-29 ................. 180618-29 ............... 180618-35
1 ......... Anode - Magnesium (.840" dia.) Optional .................... 183463-29 ................. 183463-29 ............... 183463-38

Thanks for choosing Fixya,
Kelly

Sep 09, 2011 | Air Conditioners

1 Answer

I have a six-year old AO Smith Model 50-100 that goes out intermittently and is getting harder to light and stay lit. Had the thermocouple replaced today, and it still won't light and stay lit. I am...


1st thing I would check would be the chimney. Take a match and light it, stick it near
the draft hood of the water heater, be carefull it might be hot. If the match gets blown
out, then you have a backdraft problem. Because it does not happen all the time, perhapsit only does it when you have a strong wind.

Turn off the gass and break the union apart, turn on the gas for a little bit to bleed the
air out of the line. Turn the control on water heater to pilot or lowest setting. Follow
the lighting instructions, if it still does not light then my guess would be the gas valve.

Aug 30, 2011 | Air Conditioners

4 Answers

I am looking for reset code for AO Smith GPVH50 1000 water heater.Valve installed is Intellivent White rogers 184960 000, and 184960 002 on another boiler at the same location. After disconnecting Flamable...


Hi,not too sure what really prompted the problem. But you will need to still check for more posible places on your water heater to really know what causes it not to respond.

How Do I Troubleshoot My AO Smith Electric Water Heater

Troubleshooting and repairing an AO Smith electric water heater only takes a few minutes, and can save you hundreds in service calls and plumbing bills. The main indications of electric water heater problems are; no hot water, not enough hot water, slow hot water recovery, overheating and loud or unusual noises. Each of these problems has its own cause and repair requirements. We recommend calling a professional; however, you can repair most hot water heater complications yourself. Remember, if your water heater is still under warranty, or you are not sure, call the 1-800 number on your AO Smith water heater and ask for help and parts free.

Make sure the main electric circuit breaker(s) or fuses are in their "On" position inside the home's main electric panel. If a breaker(s) looks to be half on and half off, close the breaker and open it rapidly. If the breaker does not stay in the on position, replace the water heater breaker(s) and/or inspect the wiring from panel to heater. We recommend contacting a licensed, bonded and insured electrical contractor to troubleshoot the problem. In some cases, a bad breaker is a sign of trouble within the wiring system or water heater itself.
Testing AO Smith Electric Water Heater Thermostats

Turn off all circuit breakers and/or disconnect the fuses. Remove the thermostat cover plate(s) with a Phillips screwdriver. Turn the power back on.

Check for incoming power using a voltmeter. Set the meter to read 250 Volts. Touch and hold one lead wire to each of the top left and right screws of the top thermostat (or top two screws of the lower, if only one thermostat is present.) The meter should read approximately 210 to 230 volts of electricity. If no voltage is present with the breakers and fuses on, contact an electrician.

Turn on all the hot water faucets in the house until the water runs cold. This will ensure that the thermostat(s) will call for heat. Turn the faucets off.

Place one lead of the voltmeter on the top left thermostat screw and one lead on the second screw down on the right side of the thermostat. There should be 210+ volts of power. If not, turn the power off to the heater and push in firmly on the red reset button in the middle of the thermostat. You should here a click (but not always.)

Turn the power back on and check for voltage again. If no power, or limited power- fewer than 210 volts are present, check the top water-heating element for proper operation. If full power is present, but you still have no hot water after an hour or two, replace the top heating element. If no voltage, replace the thermostat.
Testing the AO Smith Electric Water Heater Heating Elements

Turn the power off to the water heater; remove the cover plate(s).

Test for incoming voltage with your voltmeter. Do not proceed until you verify that no voltage is present.

Loosen the two screws on each side of the heating element with a Phillips screwdriver.

Wearing heavy, electrical certified gloves remove each wire from the heating element and bend it slightly back out of the way.

Set your multi-meter to the Ohms position.

Place one lead on each screw of the element. The Ohm or resistance should read 12 to 16; averages are 13 to 14. If the reading is below 12 ohms of resistance, replace the water-heating element.

Reinstall the element's wiring.

Turn the power back on and test the circuit again. Reset your voltmeter to 250V. Full power should now be present. Turn the power off and replace the front cover(s).

Turn the water heater power on and wait an hour or two to check the hot water temperature at several faucets. The recovery time of an average AO Smith residential elect water heater is around 22 gallons an hour. It may take a while to reheat, depending on the size of your unit;

20 gallon 1 hour

30 gallon 1-1/2 hours

40 gallon 2 hours

50 gallon 2-1/2 hours

60 gallon 3 hours

80 gallon 4 hours

120 gallon 6 hours
Not enough Hot Water:

Calcium and other mineral buildup on a gas water heater control-valve thermostat probe will limit the heat detectable. You can clean the thermostat by removing the control valve and soaking the probe in a tall glass of white distilled vinegar and a little backing soda. Do not immerse the control valve itself; you will ruin it. Soak it for about an hour, and then rinse will with tap water before replacing.



Pilot light will not stay lit:

The most common issue with pilot lights is the thermocouple. The thermocouple is the thin copper wire, that when heated at its tip, creates a small electric charge that opens the magnetic safety valve inside the main gas control. Gas, water heater thermocouples do fail from time to time and need replaced. Older water heaters with accessible burner chamber doors are the easiest to work on. New water heaters are required to have sealed inner chamber doors and are not readily accessible. Only certified brand technicians should remove these doors. Each time the doors opened, you must replace an airtight seal. Failure to replace the seal could lead to carbon monoxide leaking from the water heater causing carbon monoxide poisoning.



The water heaters gas control valves and thermostats can also go bad. Replacing the control valve is just as critical a safety concern. If the pilot tube, and main burner tube, is not attached to the control valve correctly, gas leaks can occur.


Electric Water Heater Troubleshooting



Trouble shooting electric water heaters requires a bit of electric know how. Learning how to use a voltmeter, or multi-meter and becoming acquainted with your home electric system is most important when fixing an electric water heater. Failure to follow safe electrical practices can cause injuries and property damage.



When troubleshooting an electric water heater, keep in mind, there are only a few parts to its operating system: the heating element(s), thermostat(s), the main wiring connection junction, anode rod(s), water connections, T&PR valve, drain valve and the tank.



The most honest recommendation when repairing an electric water heater is this. Replace the thermostat(s), and the element(s), both upper and lower, if applicable, at the same time. Replacing one element or one thermostat of an electric water heater at a time causes a mismatch in the operating capacity of each part. Kind of like only replacing one battery in and electric device, it puts more of a strain on the older parts and causes premature failure. This leads to more frequent and costly repairs. Replacing all the parts at one time will help prevent future hot water heater problems and unnecessary water heater maintenance.


Water Heater Leaking



Water heater leaks are also an issue when troubleshooting a hot water heater. In most cases, you will need to replace the water heater. However, there are times when the leak is no coming directly from the water heater's tank. Leaks can also occur at a number of the water heaters connections. Before you replace your water heater, take the time to check of these locations:



Temperature and Pressure Relief valve (TP&R)- The brass safety valve usually located on the top, or near the top of water heater.

Finding Water Heater Repair and Replacement Parts

Finding water heater repair and water-heater replacement parts is not always so easy. Electric water heater repair and replacement parts are at most hardware stores, home centers and online retailers. Residential electric hot water heater repair parts are generally generic in by nature. New high efficiency, water heater parts like the ones for hybrid electric water heaters will only be available from their respective manufacturers until there is a need in the market place.



Hot water heater parts for gas hot water heaters are harder to find and often-difficult purchase. Many wholesalers will not sell gas repair parts or equipment to none licensed nonprofessionals. They feel there is a safety risk involved. However, there are online retailers whom do not see a need to limit their water heater parts sales. This is good for us, not so good for water heater companies.

Or you could simply contact them from the below link:



AO Smith Water Heater Phone Number and Contact Information

A. O. Smith Water Products Company

500 Tennessee Waltz Parkway • Ashland City, TN 37015

1-800-527-1953 • www.hotwater.com


Hope that helped

Jun 05, 2011 | Air Conditioners

1 Answer

My a.o.smith 50 gals.hot water heater pilot going out every 2 hours whats the problem?


The flame sensor may be a little corroded. You could try sanding it to clean it up, or replace it. Cost for a flame sensor around $10.






flame sensorrollllo_0.jpg

Jan 30, 2011 | Air Conditioners

3 Answers

AO SMITH HOT WATER HEATER PROBLEM Model: GCV 40 100 Serial #: B05A062383 Questions/Comments: originally problems with pilot light goes out every time the heater shuts itself off  after...


thats what it sounds like to me you have a bad thermocoupler...as far as being under warranty alot of the components usually have bear minumum warranty the tank itself will still be under warranty based on your info... the thermocoupler are inexpensive and fairly easy to change most home depot or lowes building centers carry these in the water heater department....good luck

Jan 02, 2011 | Air Conditioners

1 Answer

I have an older Teledyne Laars EPS Gold Series One pool heater. About a year ago, I had a new Jandy igniter installed. Now, the pilot light goes on and simply burns -- it does not ignite the full burners...


You need to see what what pressure is required to turn the heater on. If you don't have enough flow or pressue, the heater will not ignite. Was it working before?

Sep 28, 2010 | Air Conditioners

1 Answer

Leaking from beneath


If it is leaking it must be replaced.

Apr 22, 2009 | Air Conditioners

1 Answer

Rheem Model# RGDJ-10eamer sometimes lights and sometimes does not


Find the small tube that runs from the inducer blower. Disconnect the hose and see if there is water in it. If so then I suggest remounting the pressure switch that it is attached to a little higher and so that there is no droop in the tube for water to collect. Just shortening the tube will only allaow water in to the pressure switch. The second thing is with the tube disconnected at the inducer take a straightened paper clip and poke it in the orifice on the nipple attached to the inducer. there may be a partial blockage. Let me know what you find.

Feb 27, 2009 | Air Conditioners

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