Webasto thermo top evo Workshop Manual

5 Troubleshooting Thermo Top Evo
504
2E 46 The glow/ignition-ele-
ment power circuit is
defective
Glow plug resistance is outside
the value range
In case of multiple occur-
rences (> 3):
1) Troubleshooting in air
intake or in exhaust sys-
tem (see Section 5.7, Fig.
504, Point 12)
2) Conduct electrical test of
glow plug (see
Section 5.7, Fig. 504,
Point 6)
3A 58 W-bus/LIN-bus short cir-
cuit to earth
No additional information
available
Troubleshooting in area of W
bus communication (see
Section 5.7, Fig. 504, Point 2
and 3)
3C 60 Internal control unit fault
60
No additional information
available
Delete fault, carry out fault
release/heater lock-out on
heater (see Section 5.1.1),
restart heater
3D 61 Internal control unit error
61
No additional information
available
Delete fault, fault release/
carry out heater lock-out on
heater (see Section 5.1.1),
restart heater
3E 62 Internal control unit error
62
No additional information
available
Delete fault, fault release/
carry out heater lock-out on
heater (see Section 5.1.1),
restart heater
3F 63 Wrong version dataset
loaded
No additional information
available
Delete fault, fault release/
carry out heater lock-out on
heater (see Section 5.1.1),
restart heater
81 129 EOL checksum error Checksum of EOL dataset is
wrong
Delete fault, fault release/
carry out heater lock-out on
heater (see Section 5.1.1),
restart heater
88 136 Metering pump interrup-
tion
Metering pump interrupted or
short circuit to supply voltage
+Ub
Conduct electrical test of fuel
system (see Section 5.7, Fig.
504, Point 5)
89 137 Combustion air fan inter-
ruption
Combustion air fan interrupted
or short circuit to supply volt-
age +Ub
Troubleshooting in combus-
tion air fan (see Section 5.7,
Fig. 504, Point 8)
8B 139 Circulating pump inter-
ruption
Circulating pump interrupted
or short circuit to supply volt-
age +Ub
Conduct electrical test of
coolant system (see
Section 5.7, Fig. 504, Point 9)
Fault
code
(HEX)
Fault
code
(DEZ)
WTT* fault message Fault details with double-
click in WTT*
Recommended workshop
action
Fig. 501 Overview of component faults entered in the fault memory
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Webasto thermo top evo Specifications

General

Brand	Webasto
Model	thermo top evo
Category	Water Heater
Language	English