wc_tx003208gb.fm
50
Basic Troubleshooting
HDR 155
7
Basic Troubleshooting
Note:
The following symptoms and remedies are some of the more common
issues that have arisen during the history of these machines. These do not
represent all the possibilities. If you need advanced troubleshooting assistance,
please contact Wacker Neuson Product Support.
Problem
Cause
Remedy
Motor does not start, no
ignition
Electrical current is not
present
Check the electrical supply
connection.
Check proper positioning
and functioning of switch.
Check fuse.
Control setting is below
ambient temperature (main,
thermostat, or other control)
Check setting of heater
control. If thermostat, make
sure selected temperature
is higher than room temper-
ature.
Thermostat or other control
is malfuntioning
Replace control device.
Electric motor is malfuntion-
ing
Replace electric motor.
Electric motor bearings are
malfuntioning
Replace electric motor.
Condenser is malfunction-
ing
Replace condenser.
Motor starts, no ignition, or
cuts out
Electric igniter is malfun-
tioning
Check connection of high-
tension leads to electrodes
and transformer.
Check electrodes setting.
Check electrodes for clean-
liness.
Replace high-voltage trans-
former.
Burner controller is malfun-
tioning
Replace control box.
CAD cell is malfuntioning
Replace photocell.
Fuel supply is insufficient
Check condition of motor-
pump plastic coupling.
Check fuel line system
including fuel filter for possi-
ble leaks.
Clean or replace oil nozzle.
