Service manual

Webasto Diesel Cooker X 100 4 Failure detection
CONTROL UNIT
BURNING FAN
GLOW PLUG
PUMP
The stove does not
start up (after two
tries).
(2)
The stove does not do
anything.
(1)
Check to see if the electric
wires are connected properly;
check the couplings and main
switch.
Check the power supply and
control unit fuses.
Check the battery voltage.
The battery voltage must be
at least 10.7 V.
Check the control unit.
Is the device receiving
currency ?
Check the control panel and
the control panel´s cable.
No
The pump is not receiving
electric impulses. The red
LED light on the control unit
is not flashing.
The pump receives impulses,
but the pump´s piston is not
moving. (You can see the
movement of the piston in the
pump´s vibration and the
slight clicking sound it makes.
Check the pump´s wiring and
the condition of the over-
heating protector.
Check the pump. (You can
try to move the pump´s piston
by tapping the side of the
pump a bit; if necessary,
change the pump).
The pump receives impulses and the piston is moving, but
the fuel is not moving through
the hose.
Check to see if the fuel
needle or filter is clogged.
Check the coupling and, if
needed, tighten it.
Change the pump.
The connection of the suction
hose to the pump is not
completely tight and the
pump is sucking in air.
The pump is worn out or dirty
and is unable to take in fuel.
OTHER REASON
The glow plug is not receiving
enough voltage (it does not
get hot enough).
Defective glow plug (light
flashes signifying defect).
Make a visual check. (The
glow plug often changes
shape when it breaks.)
Make sure that the cross-
sectional area (mm²) is
sufficient in size.
Low-grade fuel. Change the fuel.
Check the couplings.
There is water in the fuel. Filter it or change the fuel.
Check the control unit.
Change the control unit.
The burning fan does not
rotate (light will flash
signifying defect), or it rotates
too slowly.
The lead-through is closed.
There is water in the
combustion hose.
The stove is out of fuel or
there is not enough fuel for
the end of suction hose to
reach the fuel in the tank.
Open the lead-through.
Check to see if there is water
in the curves of the
combustion hose (water
trap).
Add more fuel.
The stove smokes
when starting up.
(3)
The stove suddenly
stops while running.
(4)
Burning is irregular /
the stove smokes.
(5)
Yes
Clean the fuel needle and
burner. Change the filter.
BURNER
The burner has become
sooty.
The burner must be opened
and cleaned.
Check the control unit´s
jumper settings.
Check the control unit´s
couplings.
(2)
(2)
(2)(3)
(3)
Check the condition of the
battery and power supply
cables. Charge the battery, if
necessary.
(4)
(2)(4)(5)
(4) (5) (5) (5)
Check the brand and type of
glow plug you are using. Only
use original Wallas glow
plugs.
(5)
Under 10,7 V
Defective control unit.
(1)(2)
LIGHT FLASHES WHEN IN LOCKED
POSITION
Unlocking the lock:
1. Turn the switch to the ON position
(light flashes when in locked position).
2. Unplug the main electric cable (light
stops flashing).
3. Plug the main electric cable cack in
(the yellow LED will turn on for 1-3 sec.).
4. When the yellow LED light has shut of,
turn the switch to the OFF position.
(1)
4.1 Trouble shooting chart
402