Question about Rheem 40 GAL ELEC TALL Water Heater 6YR SC 82VH402

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My water is not hot. Do I need a new thermostat?

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Depending on the age of your unit, it could be thermostat(s). The heater has two, an upper and a lower. If you got this new and are familiar with the unit, have you noticed a decrease in the temp of the water or, does it turn cold sonner than usual? It's not likely that both thermostats would go bad at the same time but, if you noticed less then premium hot water supply, you may have been operating off of one for a while. First, make sure your breaker is on and, if you have a timer on the heater, make sure it's working. Also make sure you don't have a remote switch that may have been tirned off. You should have 110v to each element and, you can turn power off and check for continuity. Try turning your thermostats up and see if the heater produces even warm water. If it does, you have bad heating elements.

Posted on May 25, 2011

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Posted on Jan 02, 2017

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Why will my boiler not fire up for heating but works fine on hot water


you have a triple aquastat that maintains a temperature level needed to provide hot water. but you are not getting the thermostat to operate the central heating. The thermostat is a switch that operates by temperature. if you have tried raising the thermostat and the system did nor kick in try jumping the thermostat terminals in the aquastat . if that works then the problem is either in the thermostat or the wiring to the thermostat. also with a electrical tester." while the thermostat is jumped" test the c1 and c2 terminals to see if power is going to the circulator. If not then you need a new aquastat. if you have power and the pump is not moving water replace it.

Oct 11, 2014 | Water Heaters

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How to Change the Gas Valve and Thermostat on a Hot Water Heater


<p>If you are having<b> trouble with the temperatures</b> of your <b>gas hot water heater</b> fluctuating too much, or after <b>changing the thermocouple</b> of your gas <b>hot water heater</b> then you may need to change the complete <b>gas valve and thermostat assembly</b>. Also if you have changed the <b>thermocouple</b> and the pilot still will not stay lit, then the gas valve could be bad or the <b>ECO (Emergency Cutout)</b> may have activated and is open. This is a onetime device and cannot be replaced.<br /> <p><br /> <p>These instructions are for the older style <b>gas valve and thermostat combination</b>. These commonly have a large red knob that adjusts the temperature of the water. Also note that the burner tube nut for <b>natural gas</b> is right hand thread, but if you have <b>LP or propane gas</b> the burner tube nut is left hand thread.<br /> <p><br /> <p>The newer <b>gas valve thermostat combinations</b> that have come out recently are similar, but they have a well in the tank that the sensor slides into. The assembly is held fast with a set screw. With this type of <b>gas valve and thermostat unit </b>the tank does not need to be drained, but most of the rest of the change out is similar.<br /><br />To change a <b>gas hot water heater thermostat</b> you will need to first buy a new gas valve for your <b>hot water heater</b>. The <b>gas valve</b> and the <b>thermostat</b> are integrated into one unit.<br /><br />To <b>replace the thermostat on a gas hot water heater</b> you must follow these procedures....<br /><br />1. Turn off the incoming water and<b> drain the hot water heater</b>.<br /><br />2. Remove the <b>pilot tube</b>, the <b>burner gas tube</b> and the thermocouple from the gas valve. Turn off the <b>gas line</b> and remove from the gas valve.<br /><br />3. Get a <b>pump pliers</b> or a<b> wrench</b> in behind the gas valve and turn the whole assembly CCW to remove it from the tank.<br /><br />4. After applying pipe dope or tape to the new gas valve threads, turn the new gas valve into the tank by turning in a CW direction. Be careful not to damage the small wires to the <b>ECO</b>. They are the little red wires on the back. If you break them the assembly is irreparably damaged.<br /><br />5. Reinstall the gas line, thermocouple, burner tube, and the pilot tube to the gas valve.<br /><br />6. Fill tank with water. Make sure to open a <b>hot water faucet</b> and <b>purge all air from the tank.<br /><br /></b>7. <b>Check for leaks</b> where the gas line hooks up with soapy water.<br /><br />8. Relight pilot light and check operation.<br /><br />9. Set the new temperature setting to a medium setting and then adjust the temperature to your liking from there and adequate time for heating completely<br /> <p>

on Feb 25, 2011 | Water Heaters

Tip

How to replace the Thermostat and Element for Electric Hot Water Heater


If you are having a problem with your electric hot water heater then you may also wonder if you can replace the failed part. The short answer to this is yes! The replacement is easy enough that most any handy person can easily perform this task.

First off make sure that you remove all power to your electric hot water heater. Then remove the access covers that cover the thermostats and the heating elements. After performing the required diagnostic tests to find the fail part you can then concentrate on the part removal and replacement. Check the tips at the bottom of this one to see how to trouble shoot your hot water heater.

To replace the heating element you may have one of two styles of element. One style has a four bolt flange that holds the element in and the other has threads that hold it in.


Before removing an element make sure that you shut off the water and drain the tank to a level below that of the element that you need to replace. This will keep you from making a mess and possibly hurting your self with the hot water.

For the four bolt flange type element, you simply remove the two wires from the element and then turn out the bolts from the flange. Once the flange is off the element will just pull back and out of the hole.
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Replace with a new element and gasket. Make sure that the new gasket gets seated in the hole to seal the element when you tighten down the bolts on the flange again. The bolts do not need to be super tight. Just snug them up good and then fill the hot water heater with water to check for leaks and then tighten more if necessary.

For the screw in elements, a removal tool is a good idea.
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A large socket looks like it would work, but because of the thinness of the hex part of the element and the bevel on most large sockets, it is very difficult to get them to grip the element securely. Most hardware stores or home centers sell a very inexpensive removal tool that works very effectively. It is well worth the effort to get the proper tool to do the job. To remove the screw in element you need to turn the element to the left or counter clockwise. Then make sure that you do not cross thread the new element as you turn in clockwise or to the right and tighten it in. Once again, make sure the gasket is seated correctly and do not over tighten. Re-hook the wires after leak checking the tank and replace the cover before energizing the electric hot water heater.
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To replace either the top or bottom thermostat, you also need to de-energize the hot water heater and remove the cover. When removing a thermostat it is a very good idea to mark the wires and the position where they were on the old thermostat. This makes the re-installation of the new thermostat easier. The old thermostat is held tightly too the tank so that it gets a good reading on the tank temperature. Be careful not to bend the bracket that holds the thermostat when you remove the old one. If you do not have the new thermostat making good contact with the tank it will not operate correctly and give you too hot of water. After switching the old thermostat with the new one, replace all of the wires to their correct position, replace the plastic, and the cover before energizing the hot water heater. Both the top and bottom thermostats are similar in their replacement, but the top thermostat also incorporates a safety reset control and switches power to the bottom element when the top of the tank is hot enough, so there a re a few more wires to that thermostat. This also keeps the two thermostats from being interchangeable. You cannot install a bottom thermostat or the top or a top one on the bottom.

This whole process is not as complicated as it may seem and you can do it!

http://www.fixya.com/support/r4654730-electric_water_heater_not_working

http://www.fixya.com/support/r4422595-electric_water_heater_wiring_diagram

http://www.fixya.com/support/r4656190-electric_hot_water_heater_temperature

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on Apr 29, 2010 | Water Heaters

1 Answer

Unit stiebel Tempra 24Hot water is running through house but cold water pipe is getting hot. Hot water pipe is not getting hot. When cold water connection is removed and water is turned on hot water is...


follow this steps and fix it. God bless you

If there is no hot water, first push the reset button on the high-temperature cutoff; test the thermostat and replace if faulty (see below). Test the heating elements and replace if faulty (see below).
If there is not enough hot water, adjust the thermostat settings. As needed, reset, test and replace thermostats and heating elements if faulty.
If the water is too hot, adjust the thermostat settings and reset. Test and replace the thermostat or high-limit cutoff (see below).
An electric water heater is a 240-volt appliance that can deliver a fatal shock. Always turn off power to the heater at the electrical panel 585dc480-4881-44a8-afda-7267c0f3de26.jpgbefore beginning work, and verify that power has been shut off. Make sure others in the house know not to restore electricity prematurely. If you have any doubt as to whether electricity has been turned off, seek professional assistance.

Oct 02, 2013 | Stiebel Eltron TEMPRA 24 Tankless Water...

1 Answer

Water heater no hot water


1) Copy following link for troubleshooting newly installed electric water heater:
http://waterheatertimer.org/How-to-troubleshoot-electric-problems-with-water-heater.html#new

2) Push in rest button on upper thermostat.

Jan 18, 2013 | Water Heaters

1 Answer

Water heater


Guessing that you have 240Volt residential non-simultaneous electric water heater? And that you have 30 amp breaker and 10 gauge wire. And that water heater is located within 100 feet of breaker box. And there are no leaks running hot water out of tank. And that you installed fully brand NEW elements of same wattage as old elements. And that fully brand new thermostats were installed, and wiring exactly duplicates wiring that was present before. And that factory-insulation was re-installed over elements and thermostats.

1) Guessing the 'hot water shut off' means the ECO red reset button located on upper thermostat keeps tripping and cutting off electric power to water heater?
http://waterheatertimer.org/How-to-troubleshoot-electric-problems-with-water-heater.html
http://waterheatertimer.org/images/WH-w-combined2-1000.jpg
http://waterheatertimer.org/How-to-test-water-heater-wires.html

2) If the ECO is tripping, then water is getting too hot, or there is shorted wire located near the upper thermostat, .
Typically replacing both thermostats and replacing elements will solve this problem .... assuming that new thermostats and elements are good, and wiring correct.
Double-Check your wiring on upper and lower thermostats.
Test wires for short.
Make sure factory-insulation is re-installed over thermostats so cool room temperature will not affect temperature reading.
Check that thermostats sit flat against steel tank.
Many short draws hot water can also cause stacking event that will trip circuit breaker.

3) Add comment and say what you find using checklist above.
Be careful to explain findings fully, using same words found on links above, so illuminated diagnosis can be made.

Dec 28, 2012 | Water Heaters

1 Answer

I have a reliance 501 propane gas water heater how do i change a thermostate


Hi,

To change a gas hot water heater thermostat you will need to first buy a new gas valve for your hot water heater. The gas vaive and the thermostat are integrated into one unit.

To replace the thermostat on a gas hot water heater you must follow these procedures....

1. Turn off the incoming water and drain the water heater.

2. remove the pilot tube, the burner gas tube and the thermocouple from the gas valve. Turn off the gas line and remove from the gas valve.

3. get a pump pliers or a wrench in behind the gas valve and turn the whole assembly CCW to remove it from the tank.

4. After appliying pipe dope or tape to the new gas valve threads, turn the new gas valve into the tank by turning in a CW direction. Be careful not to damage the small wires to the ECO. They are the little red wires on the back. If you break them the assembly is irreparably damaged.

5. reinstall the gas line, thermocouple, burner tube, and the pilot tube to the gas valve.

6. Fill tank with water. Make sure to open a hot water faucet and purge all air from the tank.

7. Check for leaks where the gas line hooks up with soapy water.

8. Relight pilot light and check operation.

9. Set the new temperature setting to a medium setting and then adjust the temperature to your likeing from there and adequate time for heating completely.

heatman101

Feb 23, 2011 | RELIANCE ELECTRIC WATER HEATER

1 Answer

Gas hot water heater will not automatically heat water, i have to manually start the burner to heat the water


Sounds like you have a bad thermostat. You can change the thermostat, but if the heater is more than 8 or 10 years old you might be better off to replace the entire heater. Thermostat replacement is easy:
1 turn off the gas 2 drain the heater 3 unscrew pilot, main burner, and thermocouple lines from bottom of thermostat. 4 unhook gas line from thermostat. 5 unscrew thermostat from heater tank. Use pipe sealer when you install new thermostat, and gas line fittings. burner and thermocouple lines seal on a taper seat and do not need sealer. after reassembly check for leaks with soapy water, not a match, light the pilot and turn up the temp. The heater may sweat quite a bit while it is heating up the first time, this is due to the cold water on the inside and the fire on the outside. some water may drip in the bottom of the heater and you might think you have a leak, but let it heat up completly, if the water is still dripping after the tank is hot then you need to find the leak.

Jun 18, 2010 | Water Heaters

1 Answer

Water heater needs a jump-start every morning


Hi,
Did they change the thermocaouple or the gas valve/thermostat???
My gues is that they changed the thermocouple and NOT the gas valve which also has the thermostat in it.

The gas valve is the problem... make them change that or give you a new hot water heater.

Heatman101

Mar 21, 2010 | Water Heaters

1 Answer

Water Too Hot


needs new thermostat(s) If the whole tank is heating( next time it trips, before using any hot water check the lower tank thru the lower element access(breaker off) If the lower tank is hot-you need a new lower thermostat. if just the upper part of the tank is heating -you need an upper thermostat.

Jan 18, 2010 | RELIANCE ELECTRIC WATER HEATER

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