Truma VarioHeat error code E 2 H
Flame not recognised: the ignition trial completed but the control did not detect a flame. (The cited operating instructions publish no ionization-current threshold - use the Truma service documentation if you need a measured value.)
What to check, and in what order, is in the app. The flow Truma: Heater Won't Ignite 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 VarioHeat Operating Instructions (EN)Truma
Related codes
- W 25 HOver-voltage at the heater: battery > 16.4 VDC. Heater self-recovers…
- W 26 HUnder-voltage: battery voltage < 10 V. Heater shuts down to protect…
- W 29 HImminent under-voltage: battery < 10.4 V (early warning before W 26 H…
- W 255 HNo 12 VDC at heater OR no TIN-bus comms between heater and CP Plus…
- W 27 HWarm-air outlets blocked or circulated-air intake blocked.
- W 28 HWindow above the exhaust cowl is open (window switch): the CP Plus…
All Furnace (Forced-Air LP) error codes · Look up another code