SYMPTOM
REMEDY
Fuel smell
● Check fuel system on vehicle.
● Check the fuel supply line in the fuel fired heater for fuel leaking and fuel hose for twisting or clogging.
● If none of above is affected, there is likelihood of fuel leaking from the heater inner. Repair the heater after removing it.
Heater does not work at full load
● Repair the heater after removing it.
White smoke occurs continuously during operation
● Repair the heater after removing it.
Shortage of coolant
Smoke occurs during operation
Excessive exhaust gas smell
● Check coolant hose for leaking, twisting and hose clamp for looseness.
● If above items are normal, leaks from the heater inner may cause these symptoms.
Repair the heater after removing it.
Loss of fuel
● Check fuel system on vehicle.
● Check the fuel supply line in the fuel fired heater for fuel leaking and fuel hose for twisting or clogging.
● If above items are normal, there is likelihood of fuel leaking from the heater inner.
Repair the heater after removing it.
MalfunctionError caused by heater malfunction1. In case of "No flame-up", fuel is cut for maximum 180 seconds.
2. Fuel is cut immediately in case of overheating.
3. The fuel fired heater will be stopped in every case of malfunction.
Error caused by low voltage or over voltage1. If the voltage from the power input terminal is lower than 9.5V - 0.5V, an error will be occurred and operation of the heater will be stopped for 120 seconds.
2. If the voltage from the power input terminal is higher than 15.5V ± 0.3V, an error will be occurred and operation of the heater will be stopped for 120 seconds.
Reset function1. Every malfunction becomes the cause of output of the fuel fired heater control unit.
2. When a malfunction is occurred, reset the fuel fired heater for restarting.
Reset can be done by removing the fuel fired heater fuse of 20A from the fuse box in the engine room for 10 seconds and by reinstalling.
Be sure to remove the fuse while the engine is running or remove the fuse within 60 seconds when the engine is stopped.