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Electric water heater only heating small amount of water

Not enough hot water

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There are top and bottom elements on hot water tanks. The bottom one usually burns out first, it can be replaced, they cost about $30. Some are immersible some are wrap around. Disconnect the power. Open the bottom cover for the element, cut the insulation, remove both wires and test with a meter to see if you have approx. zero ohms. If you have high ohms readings, then the element is pouched.

Posted on Feb 20, 2015

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Posted on Jan 02, 2017

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Miele CVA4070 Coffee not hot enough




Here is what I would do;
1. Determine if you have noticed a change. i.e was the coffee hotter in the past or has it always been this temperature. If the cups are cold or the amount of water used for each cup is small then the resulting coffee will be cooler than if warm cups were used or if the amount of water used was larger. Also if the water is not hot enough you will not get a good Crema and coffee taste will not be correct.
2. Assuming the problem is not '1' above then the likely causes is the flow through water heater. This heater is used to heat water for coffee and also for the hot water. So if the hot water pipe is also not producing hot water then you know it's a problem with the flow through water heater or power control of this module. In addition to the actual heater there is a temperature limiter, temperature fuse and a temperature sensor. If some heating occurs then it is not the temperature fuse. But it could be a fault in the actual heater, the sensor or the limiter. These components are at mains voltage and thus identification of the fault and replacement of defective parts should ONLY be performed by a trained Miele technician. So if this is the problem its best to call Miele.
I hope this helps. Regards

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1 Answer

Squeeling sound and lower pressure from gas water heater


Probably the factory-installed heat trap nipples are clogged.
Open following links.
http://waterheatertimer.org/Low-hot-water-pressure.html
http://waterheatertimer.org/Low-hot-water-pressure.html#trap
Noisy whistling and humming and low pressure are common problem with heat trap nipples and inserts from factory.
Replace heat-trap nipples with pex-lined nipples, or remove heat trap inserts with screwdriver or needle nose... careful not to break insert so it falls into tank ... which can then get lodged in hot water line elbow or under-sink shut off.
Factory-installed heat traps are part of overall strategy so manufactures can claim more efficient water heaters, without requiring customers to any thinking.
Other strategies include foam insulation instead of fiberglass (so that wires cannot be replaced on electric units), reducing factory-set temperature from previous 130-135 to 100-120, and re-estimating downward the hot water use for average family.
So some of the strategies are useful, while others problematic or imaginary.
Call manufacturer to pay-for or provide new pex-line nipples. Warranty for fist year covers Labor and parts, and after 1st year, warranty covers parts
http://waterheatertimer.org/Water-heater-manufacturers.html
Save $10 a month in future replacement costs: maintain water heater so it lasts longer:
http://waterheatertimer.org/How-to-maintain-water-heater.html

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1 Answer

My 1994 Lincoln Continental gets hot and blows cold air all the time?


Sounds like water pump is going bad. Most pumps have a small weep hole at the bottom of where the pulley mounts in the housing. Thes els will go bad and allow water to leak from it. The longer you wait to replace the water pump the worse the leak will get and eventually the pump will fail all together and the car will be undrivable until it is repaired. Once it leaks enough water out there is not enough to send through the heater core so no heat. hope this helps!

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1 Answer

MY Rheem 81SV40D Water Heater (47 gal) does not heat enough water. Approximately one bath worth.


You have dual-element 240Volt electric water heater.
Since you have some hot water, then we know upper element is good, and that circuit breaker and electricity to water heater are good.
Not enough hot water is probably bad lower element, and possibly sediment build-up in bottom of tank.
Test element:
http://waterheatertimer.org/How-to-test-water-heater-element.html
Replace 4500 watt element available at local hardware, and clean out bottom of tank:
http://waterheatertimer.org/How-to-replace-water-heater-element.html

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1 Answer

HOW LONG DOES IT TAKE AFTER INSTULATION TO HEAT WATER


Electric water heater typically makes 21 gallons hot water per hour.
Gas heater makes 41 gallons per hour.
If you use a timer on electric heater, it will make enough hot water for shower in about 15 minutes summertimer and 30 minutes wintertime. So incoming water temperature is a factor.

If your water heater is not full of water before turning on electricity, then elements will burn out.
Also the ECO might be tripped out: open top cover and push in red reset button.
How to troubleshoot electric water heater:
http://waterheatertimer.org/How-to-troubleshoot-electric-water-heater.html

Apr 18, 2011 | RELIANCE ELECTRIC WATER HEATER

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

My Reliance 606 40 gallon water heater only heats up enough hot water to fill a bathtub. We've drained it, the pilot light is fine, it heats up the water really hot, but it just doesn't seem to be able to...


How big is your bathtub? Is your water heater set on the hottest setting? What is the temperature of the hot water at the tap?

Keep in mind that hot water can cause severe burns. Children and those with diminished mental capacity can be seriously harmed by hot water.

The "40 Gallon" rating on the water heater is usually the amount of hot water the unit can produce in one hour. So the tank, and the amount of immediately available hot water, might be smaller than 40 gallons.

My bathtub is 2 feet wide by 1 foot deep and 4 feet long. This is 8 cubic feet or almost 60 gallons. So a 40 gallons of water at 120 degrees, mixed with 20 gallons of cold water (60 degrees), fills the tub with 100 degree water. My January cold water is 42 degrees, so it will take 40 gallons at 129 degrees to fill the tub. If the tub is cold to start it will take even hotter water.

So the water heater might be just fine.

Possible solutions:
1. turn the temperature up on your water heater- or the temperature control could be malfunctioning and not getting the water hot enough.
2. insulate your hot water pipes so that the water loses less heat on the way to the tub.
3. bigger water heater.
4. smaller bathtub, or less full bathtub.


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1 Answer

Hot water lasts half the time


How old is the heater?

It may be something as simple as just needing to flush the tank to remove any sedemints....and hopefully so because this is the easiest/cheapest thing to do.

If this is not the case go ahead and remove the heating elements and check for wear. Replace them if necessary. I would also replace the thermostats that accompany each of the elements.


Checking and replacing both of this requires you to drain the tank completely and should be close to $25 total....last time I checked.

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Pool and Spa Heaters pros and cons


An electric heat pump needs heat available to pump. If it is 30 degrees outside, heating a spa to 102 or so, may be impossible unless the heater has some type of alternative heat source. A properly sized, gas fired heater can take care of a larger range of heating needs. A combination heat pump and natural gas heater, probably with a controller, really makes the issue more difficult, expensive, and would require a lot of study for efficient, cost effective operation. Bottom line: In really mild climates a heat pump might do the job. In cooler climates the gas heater rules. And where a wide range of temperatures and high heat demand is wanted by the customer, a gas heater is the only way to go. A backup heat pump may take years to payout.

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