88DU
Maintenance
GB
490070GB
The stove does not
start up
(after two
attempts)
The pump does not receive
current pulses.
The red LED on the circuit board
does not blink.
Check the wiring of the pump and
the condition of the overheat
protection.
The pump receives pulses (the
red LED on the circuit board is
blinking), but the piston is not
moving.
(The pump jolts or clicks slightly
when the piston moves.)
Check the pump.
(You can try to start the piston by
carefully striking the side of the
pump. If necessary, replace the
pump.)
The pump receives pulses and
the piston is working but the fuel
in the pipe is not moving.
Check whether the fuel needle or
the filter is clogged.
The connection of the intake
hose to the pump is not entirely
sealed and the pump is sucking
air in.
The pump is worn or dirty and its
pumping power is no longer
sufficient.
The glow plug does not receive
sufficient current.
(The glow plug does not heat up
to a sufficient temperature.)
Low fuel quality.
Change the fuel.
Check the power cord
connections, joints and the main
switch.
Water in the fuel.
Dewater the fuel or replace it.
The combustion air blower
is not working,
or its speed is too low.
Check the combustion air blower.
The flue gas lead-through is
closed.
Water in the flue gas hose.
Open the flue gas lead-through.
Check the bends and loops of the
flue gas hose for water
(water trap).
Add fuel.
The burner is sooty.
The burner must be opened and
cleaned.
LOCKING INDICATION
The fuel has run out or its level is
too low for the intake hose in the
tank to reach it.
Defective glow plug.
FAULT INDICATION WITH
BLINKING LIGHTS
Visual check.
(The glow plug often changes
shape as it breaks)
FAULT INDICATION WITH
BLINKING LIGHTS
88DU_GB.indd 31
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Summary of Contents for 88DU
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Page 205: ...88DU RU 490070RU 2467 S 2448 2467 min 150 mm 74 mm max 25 mm 125 mm 2467 50 4 x 6 205...
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Page 214: ...88DU RU 490070RU Wallas Wallas 500 Wallas Wallas 214...
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