Webasto thermo top evo Workshop Manual

5 Troubleshooting Thermo Top Evo
506
5.6 General faults entered in fault memory
Fault
code
(HEX)
Fault
code
(DEZ)
WTT* fault message Fault details with double-
click in WTT*
Recommended workshop
action
00 No error No error No activity required
02 2 No start After start-up has been
repeated, combustion still
fails to occur
1) Troubleshooting in air
intake or in exhaust system
(see Section 5.7, Fig. 504,
Point 12)
2) Conduct troubleshooting
in fuel system (see
Section 5.7, Fig. 504,
Point 10)
3) Conduct check of meter-
ing pump (see Section 5.7,
Fig. 504, Point 5)
4) Conduct electrical test of
glow plug (see Section 5.7,
Fig. 504, Point 6)
04 4 Supply voltage too high Supply voltage was too long
above maximum threshold
value
Conduct check of vehicle elec-
trical-system supply voltage
(also see Section 5.7, Fig. 504,
Point 1)
05 5 Flame was detected prior to
combustion
Flame detector signals flame
before combustion opera-
tion
1) Troubleshooting in air
intake or in exhaust system
(see Section 5.7, Fig. 504,
Point 12)
2) Conduct troubleshooting
in fuel system (see
Section 5.7, Fig. 504,
Point 5)
3) Conduct electrical test of
glow plug (see Section 5.7,
Fig. 504, Point 6)
06 6 Heating unit overheated Overheat protection was
released
1) Check vehicle coolant cir-
cuit (see Section 5.7, Fig.
504, Point 11)
2) Check circulating pump
(see Section 5.7, Fig. 504,
Point 9)
3) Conduct electrical test of
temperature sensors (see
Section 5.7, Fig. 504,
Point 7)
4) Check heater for visible
damage and leaks, then
check coolant circuit for
leaks. Then put heater into
operation again.
Fig. 502 Overview of general faults entered in fault memory
Visit www.butlertechnik.com for more technical information and downloads.
www.butlertechnik.com

Webasto thermo top evo Specifications

General

Brand	Webasto
Model	thermo top evo
Category	Water Heater
Language	English