Water not hot enough


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Old 09-27-10, 09:30 PM
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Water not hot enough

This problem started a few days ago. The hot water is not as hot as it used to be. The dial is set on "hot". If I turn it all the way up, the burner comes on. If I turn it back to "hot", it cuts off.

When the hot water in the tub is turned on, the water starts out warm, but gets cooler. The burner does not come on, even after several minutes.

In the past, turning on a hot water faucet would make the burner come on almost immediately.

It's a gas 40 Gal. Kenmore "Economizer".
 
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Old 10-26-10, 05:40 AM
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First remove the upper thermostat cover plate and check the high limit switch button. If it has tripped, press it to reset it.

Check for power at the input terminals of the upper thermostat. (usually marked L2 and L2) If no power is present then check your circuit breakers or wiring to the water heater.

If there is no hot water then the upper thermostat should be applying power to the upper heating element. Check for voltage at the upper heating element. If there is power at the heating element but the element is not getting hot then the heating element needs to be replaced.

If there is no power at the upper heating element then the upper thermostat needs to be replaced
 
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Old 10-26-10, 06:42 AM
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It's a gas water heater.

Update: Water heater has been replaced.
 
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Old 10-26-10, 01:11 PM
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What's the size of the water heater?


You need to measure how much hot water you get.

Use a five gallon bucket or measure the amount of water in a smaller bucket.

Get a thermometer and measure the initial hot water temperature.

Use the bathtub and measure how many gallons of water you get before a significant decline in water temperature, and measure the additional water produced and temperature until most of the hw is exhausted.


This can help identify which of several problems you are experiencing.
 
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Old 10-26-10, 01:17 PM
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See the last post by the OP...he's already replaced it. I assume there is no problem now.
 
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Old 10-26-10, 08:28 PM
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The old water heater was 11 years old. The gas thermostat control valve went bad. New water heater was installed up to current code, and works like a charm.
 
 

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