I have a 1971 Motor Home with an Intertherm or International Thermal model DC1720 heater which in not operating. I need a Wiring diagram, schematic diagram and/or troubleshooting guide for this unit.
Tnx. Roger Janke

Intertherm has been acquired by Nortek Inc. Their address is www.nordyne.com. At this point I am assuming Nordyne is a division of Nortek.