Aqua-Hot™ Hydronic Heating System Owner’s Manual 07/04 Page 10SECTION 5: WINTERIZATIONC. Attach an adequate piece of hose onto the suction side of the domesticwater demand pump.D. Place the opposite end of the hose into an adequate supply of FDAapproved RV-Antifreeze.E. Open / close all interior and exterior water faucets, one at a time, untilonly pure RV-Antifreeze is present. Perform this procedure for both thehot and cold faucets.F. Remove the hose and reconnect the domestic water demand pump'ssuction line to the fresh water storage tank.G. Disconnect all electrical power supplies to the Aqua-Hot during storage.NOTE: For de-winterization, completely fill the fresh water storage tank.Open / close all interior and exterior water faucets, one at a time, until onlyclear water is present / visible.CAUTION: If you are disinfecting your potable water system after de-winterizing, be sure to follow RVIA’s “Instruction for Disinfection ofPotable Water Systems on Recreation Vehicles.” These instructionscan be found in the ANSI A119.2 Handbook for Recreational Vehicle Stan-dards. To receive a copy of this RVIA Standard, write to: RecreationVehicle Industry Association, 1896 Preston White Drive, P.O. Box2999, Reston, VA 20195-0999 or visit the RVIA website at www.rvia.com.Storage,continuedSECTION 6: TROUBLESHOOTING6.1 General InformationIf the Aqua-Hot’s Diesel switch “Indicator Light” does not illuminate, and theDiesel-Burner is not functioning, locate the Electronic Controller (Figure 6)and check the following:A. Check the Aqua-Hot’s Electronic Controller for any RED lights indicating afault condition. Reference Figure 6 and the Electronic Controller Trouble-shooting section to identify these fault conditions.B. Check for loose wire connections on the Electronic Controller’s TerminalStrips/Plugs. When checking for loose Terminal Strips/Plugs, remove theElectronic Controller Faceplate by unscrewing the four cover screws.C. Remove the Aqua-Hot’s Access Cover and check for loose plug connec-tors on the Diesel-Burner's Control Unit (located on the under side);reference Figure 1..D. Check to ensure that the vehicle’s fuel tank has a sufficient level of fuel.E. If your Aqua-Hot still fails to operate, please contact the Technical Sup-port Department at 1-800-685-4298 for additional troubleshooting assis-tance or visit our website at www.vehiclesys.com.GeneralInformationSECTION 6: TROUBLESHOOTING