Webasto DBW 2010 Workshop Manual

5Troubleshooting DBW 2010 / 2016
508
5.4.6 Heater emits white smoke
5.4.7 Heater cannot be switched off
no
yes
Does the heater smoke
for longer than 20 s?
Does the heater emit
smoke during opera-
tion (including at inter-
vals)?
Does the heater emit
smoke after being
switched off?
yes
Is the electrode adjust-
ment correct according
to the gauge (see Sec-
tion 6)?
Adjust ignition elec-
trodes using gauge (see
Section 6).
Does the seat of the so-
lenoid valve fail to
close?
Check valve in atomiser
nozzle is leaky. Replace
atomiser nozzle (only
DBW 2010 with return
line nozzle).
Replace atomiser noz-
zle.
Check seat of solenoid
valve and replace small
parts if necessary.
Have unsuccessful
starting attempts pre-
ceded?
Is the flow rate of the
atomiser nozzle insuffi-
cient? - Replace.
Does the heater still
emit smoke?
Collected oil in combus-
tion chamber must
evaporate first.
Does the heater emit
visible smoke?
Replace atomiser noz-
zle.
Open burner and pull
out combustion cham-
ber. Are the coke de-
posits in the
combustion chamber
visible?
Clean combustion
chamber.
no
yes
Do the switches or the digital tim-
er have electrical continuity when
switched off?
Are exhaust gases emitted after
switch-off?
Do the heater continue to run for longer
than 180 s (1563/64 control unit: 90 s) af-
ter switch-off?
Switch or digital timer defective;
replace.
Control unit defective; replace.
Does the control thermostat open
when the switching point is
reached?
Control thermostat defective; replace (not
with 1563/64 control unit).
Is the (+) voltage on the solenoid
valve eliminated?
Control unit defective; replace.
Does the solenoid valve close? Solenoid valve defective; replace.
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Webasto DBW 2010 Specifications

General

Brand	Webasto
Model	DBW 2010
Category	Water Heater
Language	English