Progressive Industries EMS-PT error code E 1
Reverse Polarity - the hot and neutral lines are reversed; the EMS will not provide power to the RV.
What to check, and in what order, is in the app. The flow RV surge protector / EMS fault lookup walks this code step by step with the pass/fail measurements, wiring schematics and procedures that go with it, and it works offline in the bay.
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- Progressive Industries EMS-PT30X & EMS-PT50X Instruction Manual (Electrical Management System)
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