Water storage tanks are an effective means of storing water for various purposes such as commercial, residential, water treatment, irrigational and agricultural. Water tanks features that are important are strength and durability and leaks and residue can be avoided by using FDA approved products.
The following are some of the problems faced in hot water tank and their possible repairs.
Hot Water Tank Repairs - Troubleshooting all Hot Water Tank Problems:

If the water is not hot:

First, remove the upper thermostat cover plate and check the upper limit switch button. If it trips, press it to reset. Check power at the input terminals of the upper thermostat. If no power is present then check the circuit breakers or wiring to the water tank. Check 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 and if there is no power then the upper thermostat needs to be replaced.

If there is lack of hot water or the water temperature is too low:

When the upper portion of the tank is hot, the upper thermostat removes power from the upper heating element and transfers the power to the lower thermostat. If the lower thermostat is defective, then the lower portion of the tank will not be heated and the supply will be less. Check power at the upper thermostat terminals. If there is no power then the upper thermostat should be replaced. Check power at the lower heating element. If there is no power, then replace the lower thermostat. Also check for a broken dip tube and replace if necessary.

If the water is too hot:

Check power at the upper heating element. If power is present at the element, the top thermostat is defective. If power is present at the lower heating element then the lower thermostat is defective. Another possible cause maybe the thermostats not pushed firmly against the tank.

If the TPR relief valve is leaking:

The relief valve operates if the temperature is too high or if the pressure gets too high.
Place an expansion tank in the line at the inlet to give the increased volume an outlet and to prevent operation of the relief valve.

If there is a banging noise:

Scale builds up on the heating elements and causes noises to occur while heating. Remove the heating elements and clean or replace them.

If there is stink:

Various bacteria can react with the magnesium anode resulting in odor. Clean the tank with chlorine bleach or change the anode rod to aluminum.

In this way, all problems pertaining to hot water tanks can be repaired easily and effectively.

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