Truma AquaGo error code W31
Decalcification finished (flash S,S,S,L,L,L,L,L) - the AquaGo has completed a full decalcification cycle. This is a STATUS message, not a fault.
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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- Truma AquaGo error-code tech-tip (Truma North America, 2025-08-26)
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