Reset A Fault Switch-Off - Webasto Air Top Evo 40 Workshop Manual

Air Top Evo 40 / Air Top Evo 55

3.10.2 Reset a fault switch-off

1. Switch on heater
2. An error has occurred and is detected by the control
unit as a fault
3. The error code is displayed via the control element
4. Any active heater lock-out is cancelled (as described
below)
4.1. The heater detects an error as a fault
4.2. Fault switch-off with subsequent fault lock-
out
4.3. The error code is displayed via the control
element
5. Switch off heater
6. Determine error cause (e.g. with or without error
code, visual inspection of fuses and connectors, etc.)
7. Eliminate error
8. Switch on heater
9. Fault lock-out unlocked
10. The heater switches into the control mode
Certain errors result in the errors being added up in the error
memory. If the number of errors in the error memory has
exceeded a limit, the heater changes over to the heater lock-
out. The maximum number of errors in the error memory or
the error memory limit is defined by Webasto.
Cancel heater lock-out
The heater lock-out can be cancelled
– with the Webasto Thermo Test PC Diagnostics (WTT)
– or by switching on the heater.
Remove fuse F1 for at least 10 s.
Switch off heater.
Reinstall fuse F1.
Switch on heater.
Visit www.butlertechnik.com for more technical information and downloads.
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Cancel permanent heater lock-out
Only for "OE" heater variants which are integrated in the ve-
hicle bus system.
Unlocking is only carried out with the vehicle-specific compu-
ter diagnosis.
Function Description
304