Technical data

DBW 2010 / 2012 / 2020 / 2022 / 300 / 350 5.Error Search and Error Elimination
505
5.4.2 The heating device gives defect sign approximately 30 seconds after the heating device is
started (at the control device 1563/6430 seconds (20 seconds at control device 1563/64).
YES
NO
Is the thermal fuse F1
disconnected? Is the heat
classifier disconnected? Is the
temperature classifier
disconnected?
The sound of the induction
bobbin can be heard
approximately after 20 or 12
seconds.
Is there voltage on the clamp
C8 and C5? (At the control
device 1563/64: Clamp D8 and
D5)
Check the lines to the control
device. Any break?
Do you get the same result
with a new induction bobbin?
The induction bobbin is
defective. Replace it.
Eliminate the reason of
disconnection. For instance,
water is insufficient. Change the
thermal fuse or set the
temperature constrainer to zero.
Fix the break.
The isolator of the ignition
electrodes is defective.
Is the resistance / voltage of the flame regulator 100 kOhm when there
is no light? (At the control device 1563/64: > 3.5 V)
The flame regulator is
defective. Replace it.
the magnetic valve in the suction
and return line open because the
magnetic valve and tank are
located high?
The bobbin of the magnetic
head is defective
The control device is defective.
Replace it.
Do you hear a sound of
combustion?
Does fuel spray out of the
vaporizer nozzle?
Yes
Is there passage in the magnetic
valves?
The magnetic valve is defective.
Replace it.
Is there voltage in the
magnetic valve?
Control the incoming lines.
No
Does the setting of the ignition
electrodes comply with the
gauge?
Adjust the ignition electrodes
according to the gauge.
Is fuel sent to the pump?
Is there fuel in the tank?
Fill fuel.
The vaporizer nozzle is
clogged. Replace it.
Are all fuel lines connected?
Tighten. New gasket.
Is the gasket surface of the
regulation piston or the air
evacuation hole dirty?
Dismantle the fuel pump. Is the
dragging nail on the shaft
okay?
The suction line is clogged. It is
either paraffin decomposition or
the water in the fuel is frozen.
Or the hole in the ventilation in
the tank is clogged.
Is the resistance / voltage of the
flame regulator 1.56 kOhm with
50 Lux light? (At the control
device 1563/64: < 3.5 V)
Does the nozzle spray with a
limited angle?
Check the conductivity of the
suction and exhaust clamping
sleeves and clean it.
Replace it or clean it.
No
The flame regulator is defective.
Replace it.
The voltage control device in
the heating device is at the
border of the low voltage
protection.
No
Recharge the battery.
Is the viscosity under 20 c St?
The vaporizer nozzle is
clogged. Replace it.
Yes
Yes
The fuel quality does not comply
with the mixture
p
ro
p
ortion in the
cold weather instruction.
The sieve of the suction
connection in the fuel pump is
dirt. Clean it.
Replace the fuel pump