Error codes › Diesel Air Heaters › Webasto Air Top EVO 40 / EVO 55 (substantially applies to Air Top 2000 STC) › F04
Webasto Air Top EVO 40 / EVO 55 (substantially applies to Air Top 2000 STC) error code F04
Premature flame detection
What to check, and in what order, is in the app. The flow Diesel Air Heater — Won't Start / Lockout (glow vs fuel) 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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- Webasto_AirTop_EVO_40_55_Fault_Codes_butlertechnik.txt
Related codes
- F00Control unit defective / heater lock-out / internal room-temp sensor…
- F01No start / no flame formation
- F02Flame abort (flame extinguished during operation, no reform after…
- F03Undervoltage or overvoltage
- F07Fuel pump defective
- F08Open circuit / short circuit / overloading / blockage in drive motor
- F09Glow plug defective
- F10Overheating