Webasto Product N.A., Inc. 28 www.techwebasto.com
TROUBLESHOOTING DBW 2010/2020/300 COOLANT HEATERS
5.3.4 HEATER STARTS ONLY AFTER SEVERAL STARTING ATTEMPTS
5.3.5 HEATER SWITCHES OFF BY ITSELF DURING OPERATION
YES
NO
Does smoke emit from the
exhaust pipe after failed
attempts to start?
Possible leakage in fuel
suction or return fuel lines
Repair leakage pointsContinue fault finding according
to section 5.3.7
Does the ignition spark
flash over on the high
voltage wire?
Does the ignition spark
flash over on the electrode
insulation?
Ignition spark coil defective
High voltage wire defective Ignition electrode(s)
defective
Possible leakage in fuel
suction or return fuel lines
resulting in air pockets
Does the heater start after
repeated starting attempts?
Does heater reteact at all? Continue fault finding
according to section 5.3.2
Fuel supply from tank has
been interrupted for an
extended period of time
Heater switches OFF after
approx. 30 sec. on fault;
continue fault finding
according to section 5.3.3
To Next Page
Loading...
Need help?
General
