Truma Combi (older boards, 4-digit catalogue) error code 0090
Fault in the electronics
What to check, and in what order, is in the app. The flow Truma Combi — Window Switch Fault (Code 0042) 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 Diagnostics Catalogue (2019-09-10)Truma
- _catalogue_extracted.txt
Related codes
- 0088Ignition spark interferes with electronics
- 0089Combustion air motor faulty
- 0094Heater overheats OR combustion air temp sensor incorrect value
- 0150Fault: air or water temp switch opened OR combustion air sensor >215°C
- 0091Fault in the electronics
- 0092Fault in the electronics
- 0093Fault in the electronics
- 0160Fault in the electronics