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Electric Water heater not working. - Air Conditioners

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Check for tripped breakers or power to the unit, then adjust the settings..

Posted on Sep 08, 2008

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I was curious as to when my Rheem 40 gallon electric water heater was purchased and installed. I fear it may be on it's last legs. The serial number is RH0198BO4391. Model # is 71-40D B. It is the...


I think that your water heater was made in 1991 so it would be 20 years old. This is not uncommon for a electric heater but you are probably right about it being on it's last legs. The good news is that a electric water heater for use in a manufactured home is no different then other building types so they are not more expensive. Gas water heaters for manufactured homes cost anywhere between 150.00-200.00 more than standard. Thank you.

Jul 14, 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

I have 40 gallon Gas hot water heater. I need t replace the anode rod. I need to know the size


Normally, gas tanked water heaters do not have a an anode rod.It's not required. Only electric tanked water heaters do.
To help you to understand the workings of a gas tanked water heater, click on the following link.

http://homerepair.about.com/od/plumbingrepair/ss/hwh_tank_gas.htm

Apr 05, 2011 | Air Conditioners

1 Answer

Water heater isn't making hot water




Hi,

If your electric hot water heater is not working...check out this tip about electric hot water heater problems

Electric Water Heater not Working


heatman101


Feb 08, 2011 | Air Conditioners

1 Answer

I cannot get the water in the water heater to drain out


Are we talking about the big water heater for the whole house?-- the a 30 ro 40 gallon water heater-- one that stands several feet tall?

What heats it?-- Electric or Gas-- or what?

You have shut off the water supply to it?--

If electric:
AND THE ELECTRIC TO IT!!-- so you don't burn out the heater elements?

Can you find any drain plug near the bottom?
Some heaters have a valve at the bottom-- does yours?

Some Electric Water heaters make you remove the heating element to drain it--
You can remove the electric wires, and slip a big deep socket over the hex shoulders on the threaded type--- Or remove the bolts on the flanged type--
Which is yours?
And it helps to open a hot water faucet somewhere-- to let air into the tank, so water can run out the bottom.

If you are talking about an instantaneous water heater, it will mean opening some union fittings on the supply and return fitting of the heater-

Tell us more, so we can help more.

Mack B

Jan 18, 2011 | Air Conditioners

1 Answer

I have a Paragon model 4004-20 Water Heater Timer and I moved the TIME arrow. Now the water heater is not working at all. I am thinking of just restoring full time power to the water heater. I did not...


You are not supposed to move the time arrow.
http://waterheatertimer.org/Paragon-timers-and-manuals.html

4000 series time arrow is pointed at 8:00.
geno_3245_97.jpg
To set current time, lift and rotate dial clockwise until current time lines up with pointer.
Put X2772 trippers on dial at times you want water heater to turn on.
Minimum on-off with Paragon 4000 is 1-1/2 hours because trippers are so fat.
You can replace 4000 timer with electronic timer and control exact on-off down to the minute:
http://waterheatertimer.org/Boxtype.html

Electric water heater heats about 21 gallons of water per hour.
Shower uses 6-9 gallons hot water.
Bath uses 10-12 gallons hot water.
Average water heater that is not connected to timer, runs about 3 hours a day. You can make timer pay off by keeping time schedule lower than 3 hours.

Following link shows how to figure cost for electric water heater:
http://waterheatertimer.org/Figure-Volts-Amps-Watts-for-water-heater.html

Following link shows several ways to save with water heater, plus general information to save money long-term:
http://waterheatertimer.org/9-ways-to-save-with-water-heater.html

Nov 21, 2010 | Air Conditioners

1 Answer

Electric water heater reset trips


what is your volatge. maybe reset button not working properly

Jul 23, 2009 | Intertherm Air Conditioners

1 Answer

Water heater problem (no leak on floor)


shut off the power to the hot water heater wait 5 to 15 min. If the noise stops it is the water heater eating up electricity. Turn it back on if noise starts again feel about 5 or so feet down the hot water line. If this line is hot you have a leak beyond the hot water heater. If you still hear it when the power is off to the water heater. next turn the water off on the cold water line at the water heater with the power off also Look at the water meter and see if the hand or wheel on the meter is moving and it should no be. Also think if the breaker to the hot water is off the electric meter should practically stop if no refrig oe anything else on. Have someone watch the electric meter and switch 1 breaker at a time leaving the one you just shut off in the off position until you cut them all off. Should the meter still be moving you have a main service cable shorting somewhere call the power company to advise you further if this is the problem.. Should just cutting the circuit breaker for the hot water heater stop the noise and down the hot water line is not hot then you are probably wasting power due to a thermostat or element inside the hot water heater.. Thank you j




Nov 23, 2008 | Ruud Central System Air Conditioner

1 Answer

NO HOT WATER UNLESS HEATING IS ON


Some Hydronic heating systems have a loop for hot water. If you only have hot water when the heat is working then your normal hot water heater is out of the circuit. Breaker off, or problem with the normal water heater. These can be ether electric or gas.

May 01, 2008 | Air Conditioners

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