Espar (Eberspächer) RV fault codes
Espar / Eberspächer diesel air heaters (Airtronic) are widely used in vans and RVs. Faults are stored as numeric codes, read via a diagnostic controller.
Furnace
012
Overheating detected by software: the outlet (heat-excha… 017
Overheat shutdown. The temperature measured at the overh… 019
Glow plug (glow pin) energy too low: the glow plug is no… 020 / 021 / 022
Glow plug electrical fault: 020 = open circuit / interru… 047 / 048
Metering (fuel dosing) pump fault: 047 = short circuit /… 050
Operating lockout: too many unsuccessful start attempts.… 052
Unsuccessful start (no flame established). The heater at… 053 / 054 / 055 / 056
Flame-out (flame cut-out) during operation: a stable fla…
Overheating detected by software: the outlet (heat-excha… 017
Overheat shutdown. The temperature measured at the overh… 019
Glow plug (glow pin) energy too low: the glow plug is no… 020 / 021 / 022
Glow plug electrical fault: 020 = open circuit / interru… 047 / 048
Metering (fuel dosing) pump fault: 047 = short circuit /… 050
Operating lockout: too many unsuccessful start attempts.… 052
Unsuccessful start (no flame established). The heater at… 053 / 054 / 055 / 056
Flame-out (flame cut-out) during operation: a stable fla…