Originally Posted by dbailey
Brian: I believe you meant E1 in this paragraph...
Good catch! Thanks
Yes, E0 is the normal operating condition; I intended to refer to E1, the reversed input ("polarity") error.
Originally Posted by Brian B-P
- An Electrical Management System is sort of a surge protector plus; it is not the converter
- The one installed by Escape is the Progressive Industries EMS-HW30C
The installation guide and operating instructions document is linked on that web page.
- Error code E1 is labelled 'reverse polarity', but AC ('alternating current', in contrast to DC or 'direct current') power doesn't have a polarity; as Robert explained it is actually the hot (normally black insulation) and neutral (normally white insulation) wires reversed.
- Lots of AC-powered systems work fine with the two reversed, but it can be unsafe, because the neutral (and only the neutral) is supposed to be bonded (connected) to ground at one point in the system.
- Some campground ("cg") wiring is pretty bad; in this case the outlet was apparently wired incorrectly, reversing these two wires.
- If the EMS has always reported E1 when plugged in - to different sources of power - the wires could be reversed within the trailer. If it only reports E1 when plugged into a particular campsite receptacle - and works with other receptacles - then that site is wired incorrectly and there is no way to get around the problem other than moving to another site. Page 10 of the guide is a troubleshooting information relevant to E1 errors.
- The response of this EMS to many conditions includes waiting for a time delay - patience and observation of the time delay indicator is required in troubleshooting.
Does that make anything more clear?