Webasto thermo top evo Workshop Manual

Thermo Top Evo 5 Troubleshooting
505
* WTT = Webasto Thermo Test PC Diagnosis
90 144 Coolant changeover valve
open circuit
The coolant changeover valve
power circuit is open\nor has a
short circuit to +Ub
Conduct electrical test of
coolant changeover valve (see
Section 5.7, Fig. 504,
Point 16)
94 148 Temperature sensor inter-
ruption
Temperature sensor inter-
rupted or short circuit to supply
voltage +Ub
Conduct electrical test of
temperature sensors (see
Section 5.7, Fig. 504, Point 7)
99 153 Glow plug / electronic
ignition unit interruption
Glow plug / electronic ignition
unit interrupted or short circuit
to supply voltage +Ub
Conduct electrical test of
glow plug (see Section 5.7,
Fig. 504, Point 6)
AB 171 Overheat sensor interrup-
tion
Overheat sensor interrupted or
short circuit to supply voltage
+Ub
Conduct electrical test of
temperature sensors (see
Section 5.7, Fig. 504, Point 7)
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
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