Inverter Question

[pdo]

https://www.tugnuts.com/threads/inverter-question.23907/post-151801
I have a new 2024 C288 with the lithium batteries. When I go off shore power to inverter the hot water heater will no longer work. Everything else operates fine, other than the hot water heater. I understand that the hot water heater is a big energy draw, so I normally turn all other things like AC off when turning the hot water on. Can someone give me some guidance as to the cause and solution to this? Thanks for the help!

 

[Brian John]

Is the stove AC-powered or propane? Do the microwave, stove (power or stove controls) and AC work?

Per the drawing, I found the Water heater, microwave, stove, and AC all come off a 4-circuit AC circuit breaker panel. I cannot tell if this is inverter-fed, my thought is it is not??????? I cannot see from the drawing I have if the two AC panels can be tied together.

A heater is a resistive load that is not much more basic than a resistive load pretty much any power you can throw at it it will produce (except extreme overvoltage.

 

[pdo]

Is the stove AC-powered or propane? Do the microwave, stove (power or stove controls) and AC work?

Per the drawing, I found the Water heater, microwave, stove, and AC all come off a 4-circuit AC circuit breaker panel. I cannot tell if this is inverter-fed, my thought is it is not??????? I cannot see from the drawing I have if the two AC panels can be tied together.

A heater is a resistive load that is not much more basic than a resistive load pretty much any power you can throw at it it will produce (except extreme overvoltage.

stove is propane. Everything works fine on inverter power except hot water heater. The hot water heater works fine on shore power.

 

[Brian John]

One possibility is the Inverter could be shutting down due to an overload?

What size water heater, and what size is the inverter? What model and size of lithium, are they being properly charged?

If you have an amp clamp I would measure the current at the water heater while on shore power, I would also measure the voltage at the circuit breaker for the water heater while on shore power and watch what happens when you disconnect shore power and go to inverter.

Additionally, I would do this test measuring the voltage of the batteries.

 

[Nwdiver]

I believe the water heater is not on inverter power. To verify, look at the ac distribution panel when running on inverter power. If the red led is not lit when breaker is on, then the water heater is not on inverter.

 

[pdo]

I believe the water heater is not on inverter power. To verify, look at the ac distribution panel when running on inverter power. If the red led is not lit when breaker is on, then the water heater is not on inverter.

The hot water heater worked on inverter when I first got the boat, but stopped for some reason. I understand that the inverter is designed to run the hot water heater, obviously realizing that you still have to manage whatever power demand is on.

 

[Nwdiver]

When you used the water heater before, how long were you off shore power? The water heater can stay hot for a long time. My boat is a northwest edition with AGM batteries, so I never have the water heater on and rarely use the inverter,