Ok thanks again. Reason I ask is because I have plugged my 220v wired boat into a 110v outlet, primarily to equalise the batteries, which I did today using the solar
and victron controller. All went well and Sg is back up. I did t select the shore power
at the panel and left the invert on, although I did turn off everything including fridges during equalisation.
I also turned on the water heater at the panel, assuming no damage could be done. Tonight after running out of water during a shower
, I put some clean water in the tank and ran the water through the faucet to clear the air blockages. All good till I turned the faucet to hot and brown water came out of the faucet for about a minute, before running clear again. I don't really think the brown water was sludge in the water tank as they are clean and the water in the hose was clean. We spent so e time using it to clean the boat earlier and it was fine.
I also noticed the water was hotter than usual, really hot, which led me to rethink the 110v.
So it's possible the shower
used up all the water in the water heater, and the brown water was some sludge coming from that. It's also possible the water heater did get a lot hotter than it should have and was hot enough to clean off some internal corrosion
. The water heater is less than a year old so I doubt it would be very corroded.
I've since turned off the water heater.
Which brings me to another question. What happens when the water runs out when you are showering. Does the water heater empty, but the element continues to heat? Perhaps the brown water was the water being pumped back in and when it hit the element if steamed and steam cleaned the inside if the water heater? The brown water was accompanied by steam.
Any thoughts or ideas and explanations much appreciated! Especially what happens with the waterheater when the water tank runs dry. FYI the waterheater is probably 1m below the water tank.