Webasto DBW 2016 - Fig. 502 Troubleshooting - Rapid Diagnosis

DBW 2010 / 2016 5 Troubleshooting
503
5.3 Troubleshooting – rapid diagnosis
Heater types:
All heaters
Only heaters with sensor technology with 1563/1564 control unit
Description of malfunction Check and repair or replace if necessary
S
After switching on – no function
Switch-on check – goes out after
approx. 25 sec. (30 sec.
o)
Combustion air fan – not running
Combustion air fan – no run-up
Combustion air fan – no run-on
Circulation pump – not running
Ignition spark – not present
Combustion – does not begin (after
15 sec.
o)
Combustion – stops after approx.
25 sec. (30 sec.
o)
Combustion – cannot be shut off
Combustion is carried out – with light-
coloured smoke
Combustion is carried out – with dark-
coloured smoke
Heater – overheated
Fig. 502 Troubleshooting – rapid diagnosis
Power supply
Fuses
Electr. lines and connections
Switch
Thermal fuse or limiter
Control thermostat or temp. sensor
Flame monitor
Control unit
Ignition electrodes
Ignition spark generator, ignition cable
Drive (engine)
Fuel supply
Fuel pump
Solenoid fuel valve
Atomiser nozzle
Circulation pump
Combustion-air routing
Exhaust-gas routing
Heating system
Visit www.butlertechnik.com for more technical information and downloads.
www.butlertechnik.com