Chinese Diesel Heater RV furnace fault codes
RV forced-air propane furnaces lock out after failed ignition attempts. Many use a status LED on the control board that flashes a fault pattern.
How to read the code
Find the control board (often behind an exterior access panel or inside under a vent) and watch the status LED. Count the flashes in each group; the pattern maps to a specific fault.
All documented codes
E1 warning
Most commonly under-voltage: the heater senses supply voltage below the safe operating win… E2 warning
Most commonly over-voltage: the supply voltage is above the safe limit and the heater shut… E3 warning
On the widely-sold Vevor-style controllers E03 indicates a glow plug (ignition plug) fault… E4 warning
On Vevor-style controllers E04 indicates a fuel pump fault (pump disconnected or not pulsi… E5 danger
On Vevor-style controllers E05 is an over-heat (over-temperature) protection trip: the hea… E6 warning
On Vevor-style controllers E06 indicates a fan / blower motor fault (the combustion/air fa… E7 warning
On Vevor-style controllers E07 is a communication / broken-circuit error between the contr… E8 warning
On Vevor-style controllers E08 is a flame-out / low-fuel fault — the flame failed or died,… E9 warning
Commonly a glow plug / ignition-circuit electrical fault: the glow plug circuit is open, s… E10 danger
Two documented meanings: (1) repeated start-up failure — the heater has tried and failed t… E11 warning
Glow plug / heating-element performance fault: the plug is electrically connected but is n…
Most commonly under-voltage: the heater senses supply voltage below the safe operating win… E2 warning
Most commonly over-voltage: the supply voltage is above the safe limit and the heater shut… E3 warning
On the widely-sold Vevor-style controllers E03 indicates a glow plug (ignition plug) fault… E4 warning
On Vevor-style controllers E04 indicates a fuel pump fault (pump disconnected or not pulsi… E5 danger
On Vevor-style controllers E05 is an over-heat (over-temperature) protection trip: the hea… E6 warning
On Vevor-style controllers E06 indicates a fan / blower motor fault (the combustion/air fa… E7 warning
On Vevor-style controllers E07 is a communication / broken-circuit error between the contr… E8 warning
On Vevor-style controllers E08 is a flame-out / low-fuel fault — the flame failed or died,… E9 warning
Commonly a glow plug / ignition-circuit electrical fault: the glow plug circuit is open, s… E10 danger
Two documented meanings: (1) repeated start-up failure — the heater has tried and failed t… E11 warning
Glow plug / heating-element performance fault: the plug is electrically connected but is n…