Truma Combi error code E 122 H
Combustion Failure: Flame not detected. Part of the 6-code combustion-failure family (E 112 H, E 121 H, E 122 H, E 202 H, E 211 H, E 212 H per Truma Service Handbook Further Details sidebar). Potential combustion issue with at least one of the three ingredients: air, fuel, or spark.
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 Service HandbookTruma
- Truma Combi Service Handbook (TrumaCorp, 20 pp; technician training handbook with Common Error Codes table and per-code Further Details sections) (rv-tech-resources/58-truma-combi-hydronic/Truma-Combi-Service-Handbook_TrumaCorp_20pp.pdf)
- Truma Combi 4 / 6 / 4E / 6E / D6 Operating + Installation Instructions
- Truma Corp 1-855-558-7862 (Elkhart IN)
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