Truma Combi (older boards, 4-digit catalogue) error code 0212
Gas supply interrupted.
What to check, and in what order, is in the app. The flow Truma Combi — Ignition / Electrode Diagnostics (Code 0088) 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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- Truma Combi Diagnostics Catalogue (2019-09-10)Truma
- Truma Combi Diagnostics Catalogue (Truma KG, dated 2019-09-10, 57 pp; canonical Gen-1 4-digit fault catalogue) (rv-tech-resources/58-truma-combi-hydronic/Truma_Combi_Diagnostics_Catalogue_2019-09-10_57pp.pdf)
- rv-tech-resources/58-truma-combi-hydronic/Truma_Combi_4_6_Plus_E_D_Technician_Service_Diagnostic_Reference.md