Wacker Neuson HI400HD D

ghi_tx001466gb_FM10.fm
83
HI400HD D / HD G Basic Troubleshooting
8 Basic Troubleshooting
8.1 Basic Troubleshooting
Problem Cause Remedy
The burner does not start
■ The remote thermostat or
thermostat plug is not
inserted correctly.
■ Faulty cable or power
supply
■ The over temperature
limit has tripped
■ The burner is in lock-out
mode.
■ Insert the remote
thermostat or thermostat
plug.
■ Check cable and power
supply
■ Press the reset button.
The burner starts, the flame
does not ignite, the unit
locks out
■ No fuel
■ Worn burner nozzle
■ Faulty electrodes
■ Cad cell detecting
external light.
■ Cad cell defective
■ Burner control defective
■ Fill fuel tank
■ Replace burner nozzle
■ Replace electrodes
■ Check the Cad cell
enclosure
The burner starts, flame
ignites, but the unit locks
out
■ Incorrect fuel pressure
■ Worn burner nozzle
■ Incorrect air lock setting
■ Cad cell defective
■ Burner control defective
■ Increase fuel pressure
■ Replace burner nozzle
■ Re-adjust air lock setting
The burner ignites but the
performance is poor
■ Worn burner nozzle
■ Clogged fuel filter
■ Air leaks in the fuel lines
■ Insufficient oil pressure
■ Replace burner nozzle
■ Replace the fuel filter
■ Inspect the lines for leaks;
replace if necessary
Black smoke from vent pipe
■ Insufficient combustion air
■ Insufficient ventilation air
Remove any obstructions
from the air inlet and outlet
areas.
The machine stops due to
pressure switch fault
■ Overheat condition
■ Faulty pressure switch
■ Incorrect nozzle
■ Wrong fuel pressure
Contact Wacker Neuson
Product Support