Power off. Better still, unplug your boat.Thank you Bill. I'll try to do this. Is there anythng else? Extra fuse or switch or something else I need to be aware?
For us rookies, could you give us step-by-step instructions like Artboas did? Thanks...If your 35.5 is anything like my 33.5 I would start by checking Circurt Brearker/Switch at the electrical panel first, then move to the check that ARTBOAS mentions above. Had a similar problem in the past on a Catilina 30 and it was the CB/switch.
When my Seaward 6 gal heater stopped working, I turned the power off, removed the metal cover over the electrical connections on the heater, identified where the power came in to the unit, turned the power on and used a tester to see if I had power at these terminals....I did, so I assume it was the element...but I noticed that the wires then went to a reset switch of some sort with a red reset button on it. Tr button did not seem to do anything when pushed in. There was no power at the element terminals, so I replaced this switch....a temperature limiting switch I think it is called. About $15plus s&h. The switch is held on by 1 or 2 screws, and has terminal screws for the incoming and outgoing wires...very simple to replace.....just make sure your power is off, and that you pay attention to which wires connect where. Before buying a new element, use your multi tester to determine where the power "stops". That will be the culprit. If every thing checks out, and you have power at the terminals of the element...then the element is probably bad. I looked through my photos, but could not find one of the electrical connections.Thank you Bill. I'll try to do this. Is there anythng else? Extra fuse or switch or something else I need to be aware?
An excellent point. I also checked the element with an ohm meter and it showed continuity, meaning it probably was not the actual element.Indeed you can test whether you have juice at the element or at the switch but you can also test the lement itself with a simple ohm meter. See how on attached link.
http://waterheatertimer.org/How-to-test-water-heater-element.html