Xantrex Freedom EX 4000 error code 78 (Cold Temperature warning and shutdown)
[W/F] Warning then shutdown, any mode: internal temperature is approaching the lower end of the operating range (-10 degC); the unit shuts down until it warms above freezing.
What to check, and in what order, is in the app. A step-by-step flow walks this code with the pass/fail measurements, wiring schematics and procedures that go with it, and it works offline in the bay.
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- Freedom EX 4000 Inverter/Charger with 48VDC-to-12VDC Converter Owner's Guide 975-0999-01-01 Rev F (May 2025)Xantrex LLC
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