Truma Combi error code E 24 H
Risk of low voltage. Battery voltage too low < 10.4 V. (Published as warning 'W 24 H', not an 'E' fault; the Truma Combi Diagnostics Catalogue and the CP Plus Operating Instructions both independently define code 0024 / W 24 H this way -- the cited Service Handbook row appears to duplicate code 26's text as an extraction artifact.)
What to check, and in what order, is in the app. The flow Truma Combi — 12V Supply Diagnostic 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.
Start free trial 14 days free, no card neededDocumented in
- 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 Diagnostics Catalogue (canonical 57-code reference, external PDF at leisureshopdirect.com/pdf/370196265.pdf)
- Truma Combi 4 / 6 / Plus / E / D Technician Service Diagnostic Reference (rv-tech-resources/58-truma-combi-hydronic/Truma_Combi_4_6_Plus_E_D_Technician_Service_Diagnostic_Reference.md)
Related codes
- W 18 HWarm air outlets blocked / circulated air intake blocked. Yellow…
- 0020Plausibility of NTC Water Temperature Sensor. Water Temperature…
- W 21 HPlausibility of NTC Room Temperature Sensor. Room Temperature Sensor…
- W 22 HPlausibility of NTC Air Temperature Sensor. Air Temperature Sensor…
- E 25 HCurrent for air circulation motor too low. Air circulation motor or…
- E 26 HCurrent for air circulation motor too high. Air circulation motor or…
- W 45 HNo 120VAC supply to Combi. Fault in 120VAC power supply, WECO manual…
- E 69 HCurrent monitoring for air circulation motor with CP Plus - software…