Bontrager Report post Posted April 20, 2020 M Bontrager I have a 2004 Damon Ultrasport 3679 on a Freightliner Chassis and had it winterized last fall. After I de-winterized it my hot water is not heating anymore when driving from the engine. Would there be a valve somewhere that would have been closed when they winterized the Coach. It works fine using electric Share this post Link to post Share on other sites
hermanmullins Report post Posted April 20, 2020 Welcome to the Forum. Since the water heater works on electric are you talking about working on propane? If so have you checked to see if, when you had it winterized, they turned your propane off? Herman Share this post Link to post Share on other sites
Bontrager Report post Posted April 20, 2020 No I’m talking when driving the Coach it used to heat the water in the water heater automatically from the engine Share this post Link to post Share on other sites
wolfe10 Report post Posted April 20, 2020 Bontrager, Yes, welcome to the FMCA Forum. If you are talking about Motor-aid, check for a valve in the engine room-- could also be one at the back of the water heater that would direct engine-heated water to dash heater core vs water heater. Start by checking the back of the water heater, as winterizing should not have affected engine-room components. Share this post Link to post Share on other sites
hermanmullins Report post Posted April 20, 2020 Ok, might I suggest that you contact the shop that winterized you coach and ask them if they shut off a valve from the engine to the heater. Hermna Share this post Link to post Share on other sites
Bontrager Report post Posted April 20, 2020 Yes that is an option but after all the BS they tried to sell me just fixing my furnace I think we will stay as far away from Camping World as possible!!! Share this post Link to post Share on other sites
hermanmullins Report post Posted April 20, 2020 Another lesson learned. Check with the valve coming into the heater like Brett said. Herman Share this post Link to post Share on other sites
Bontrager Report post Posted April 20, 2020 Ok thanks. The bypass valve for the water heater is closed but didn’t think that would cause the problem. Share this post Link to post Share on other sites
wolfe10 Report post Posted April 20, 2020 This would be a separate valve-- IF you have one. It would be in the engine coolant line (i.e. engine coolant), not potable water line. Normally, the hose from engine cooling system goes to BOTH water heater (motor-aid) and to the dash heater core. If is common to have a valve that allows you to divert all engine heated water to the dash heater core. That is the valve, again IF you have one, to check. Share this post Link to post Share on other sites
Bontrager Report post Posted April 20, 2020 Ok I’ll check. Thanks Share this post Link to post Share on other sites
