Service manual

Webasto Diesel Cooker X 100 2 Functions description
Temperature sensors
The T4 circuit measures the voltage of the heat
sensor (thermocouple) and will light the red LED
light if the voltage exceeds the limit (10 mV).
Ten seconds after start-up the T4 will begin
recognizing the voltage.
The burning detection limit is 10 mV and it will be
raised 30 % at the same pace as the voltage rises.
The burning detector’s (red LED light) ignition
indicator is 10 mV and its shut-down indicator is 13
mV.
There is an 8-second delay from the time the
burning detector shuts off until the pump shuts
down. The lock-up detector will automatically reset
from the burning detector. The red LED light will
indicate whether or not the burning detector is
functioning. See 2.2 “Descriptions of flashing lights”.
T3 is a overheat thermostat. When the temperature
will rise over 150° Celcius it will cut the power off
from pump and the unit goes to after cooling phase.
After the unit is cool thermostat will automatically go
to on position.
Hot plate indication lamp
An orange hot plate indication lamp lights on the
lower edge of ceramic plate when the plate is hot.
The hot plate indication lamp will light up
immediately after the start. The lamp will remain on
for 50 minutes (± 10 %) after the cooker has been
turned off.
Control unit
The control unit is the central component for
ensuring the cooker’s function and monitoring a
proper cooker operation.
If a fault occurs, an error code will be output in the
LEDs of the operating panel by various flashing
sequences.
In addition, the heater’s parameters and running
hours can be checked using a personal computer.
Note! You must be sure you have ESD
protection while handling the control unit.
Static electricity can damage the control
unit.
204
Electrical connections for the control unit
Wires for control
panel
Control panel
Thermo element