[C320-list] Hot water heater

[MARK STEVENS via C320-list]

Installed new hot water heater 2 seasons ago. Worked fine. Worked fine after launch this year then drained sanitized and refilled tanks. Now no hot water. Advice??
Sent from my iPhone

[John Beck via C320-list]

Reset the breaker on the side
John Beck
518 Sail On


Jb

[M K via C320-list]

Hi Mark,
You may just need an electric heating element. If that element is powered
and the hot water tank is empty, the element will overheat and fail very
quickly.

In troubleshooting this you want to make sure the hot water tank is full
before energizing the a/c circuit to the tank. I don't have a separate
switch to turn it on or off, so I use the breaker to kill the power to the
water heater. Then with your freshwater tank full, turn on your water pump
and when it stops running your hot water tank should be full. Once the
tank is full you can safely put the breaker in and power the element. You
can then use a meter to see if you in fact have power at the element. If
you have power at the element and no hot water, you will need to replace
the element. Mine requires a 1.25 inch socket. To access the element you
will need to pull the cabinet out under the galley sink, and possibly
remove a small cover from the element.

You likely know this, but it is worth mentioning. The original heater would
also have had hoses from the engine cooling system to the heater. These
allow hot engine coolant to pass through a heat exchanger (a small tube) in
the tank. This is independent of the electric element. In my case these
were bypassed at the engine because the hoses were in bad shape and needed
replacement. If your system has not been bypassed then you should also
have hot water after running the engine and getting it up to normal
temperature.

Regards,
Matt Knoll
#315 MaryAnne