Yes, it is possible for a water heater to leak from the cold water inlet due to issues such as a faulty connection, loose fittings, or corrosion. Regular maintenance and inspection can help prevent leaks in the water heater.
The cold water inlet in a water heater system brings in cold water from the main water supply into the tank, where it is heated up to provide hot water for household use.
The cold water inlet valve to the water heater is closed.
I think the only reasonable answer can be that the cold and hot water inlet/outlets are reversed. your hot water line is attached, at the heater to the cold water inlet or your hot water outlet is too short inside of the tank
Hook it up on the cold inlet side where you have room.
Take cold inlet water pipe off tank. The dip tube sits below the fitting joining to the tank on the cold inlet side. You can pull it out and replace it.
There is no hot water inlet in a water heater. There is a cold inlet and a hot outlet. Yes it can be connected to the hot outlet depending on the jurisdiction. Check the plumbing codes in your area to be sure.
The inlet valve is shut off on the cold water feed side or your mixing valve or tempering (if you have one has failed.
The cold side inlet may be plugged with sand or rust.
A hot water heater is designed to supply hot water to faucets, not cold water. It is not possible for a hot water heater to siphon into a cold water faucet. Each faucet is connected to either the hot or cold water supply lines, which are separate in a plumbing system.
yes, as long as the cold water inlet valve to your water heater is open.
no
look online or go to a handware store or plumbing store just make sure you get the right one for your brand water heater.