Boat Water Heater Not Working

The gauge indicates your engine operating temperature and tells you whether the engine is in danger of overheating.

Boat water heater not working. We know that hot water from the engine jacket is flowing through the water heater because the webasco heat exchanger cabin heater plumbed in parallel still works fine and puts out as it always has. Hands on sailor from our december 2010 issue. As to shorting out the 120 v ac heater that might happen though i doubt it since the heater already sits in the water in the tank. Before checking any electrical parts of a water heater shut off the power to the heater s circuit by turning off the appropriate breaker in your home s service panel breaker box.

Your boat s water temperature gauge provides important information about your engine. This failure leaves you in the. Even after running the main engine for an hour and thereby causing 180 degree f 80 c water to flow through the heater s exchanger the water in the heater is barely warm. Electric water heaters are high voltage 240 volt appliances that are dangerous to work with when the power is on.

I do not know seaward but some basic trouble shooting. If the breaker is on use a volt meter to make sure you have 120v at the water heater. Is there a reset button on the water heater make sure it is in. Ps there is no such thing as a hot water heater just a water heater.

Don t land in hot water. By the way as i see it if the heater coil failed bay water would flow into the boat s water tank and then either stop flowing when the tank filled or flow out the air vent overboard. By steve d antonio.