4. FAULT CODES / TROUBLESHOOTING
Note: This fault code book is designed for an easy identification of any issue. Any repairs/replacements of the internal components of
the heater unit described below must be consulted and pre-approved first with the supplier of the product. The warranty will be
voided if there are any repairs/modifications or unauthorized changes in the hardware or firmware of the product without the approval of
the supplier or any replacement of non-original parts or components that are not supplied by the supplier.
●Run out of fuel
○This can happen anytime after you run out of fuel in the individual fuel tank or
the fuel level of the main tank has dropped under the tip of the suction pipe.
You must fill the tank and then fill the fuel lines using the Pump Oil Start or
Remote Pump Oil mode or repeat the start-up process again until successful
ignition or until you remove all the bubbles sitting on the fuel line.
●Closed / blocked breathing vent of the tank
○Implosion of the tank prevents pumping the fuel. Open the breathing vent of
the tank.
●The wrong placement of fuel lines/fuel filter/fuel pump
○A problem especially on the intake side of the fuel line before the fuel pump,
which is most vulnerable for creation of an airlock. Review the placement of
the fuel line /filter/ fuel pump exactly as per the provided instructions.
If you are unsure if the problem is due to the placement of the fuel lines (this
can occur if you run longer distance in horizontal level), you may try placing
the fuel pump directly under the heater and suck the fuel straight from the jerry
can to determine if the problem is caused by the fuel line placement.
●Wrong diameter of the fuel lines
○The fuel lines supplied are a special size with very small internal diameter.
Never use any other type of fuel line.
●Blocked or compressed air intake / exhaust pipe
○Check the air intake / exhaust pipe for the blockage, dirt, snow, mud.
●Condensed / rain water staying in the air intake / exhaust pipe
○Reinstall the pipes as per instructions to allow water to escape naturally.
●Blocked fuel line or fuel filter
○Replace the fuel line or fuel filter.
●Bad quality of fuel
○Replace the diesel.
●Carbon deposition inside the burner
○Replace the burner.
●Carbon deposition in heat exchanger / exhaust pipe / exhaust silencer
○Pressure clean with water the heat exchanger/ exhaust pipe / exhaust silencer.
●Dirt on the atomising net of the glow plug
○Replace the atomising glow plug net
●Dirt on the glow plug
○Replace the glow plug
●Faulty blower motor / heat exchanger gasket OR burner / heat exchanger gasket
○Replace the gasket
●Fault of the Fuel Pump
○Replace the Fuel Pump.
●Fault of the ECU * please see above
●Undervoltage
○System minimum voltage is 10.5 volts. Verify battery voltage. Connect the
multimeter to the positive and negative terminals of the wiring harness and set
to volts DC. If the wiring harness has been extended for a longer distance,
check the voltage at the main ECU connector.
○Record the voltage. If the voltage is less than 12.6 (flooded cell) 12.8 (AGM),
connect the battery charger and log off the job until the batteries are fully
charged. Otherwise, turn on the unit while watching the multimeter.
●Wrong connection in connectors
○Check the connector of the main ECU board for any dirt or corrosion on the
