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
have 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.
1.
Remove fuse
f1
for at least 10 s.
2.
Switch off heater.
3.
Reinstall fuse
f1
.
4.
Switch on heater.
Cancel Permanent Heater Lock-Out
Unlocking is only carried out with the vehicle-specific computer diagnosis.
4.0 Technical Data
Except where limit values are specified, the technical data listed in the table refer to the usual heater tolerances of ±10% at
an ambient temperature of +20 °C and at the rated voltage and in rated conditions.
Electrical components:
The control unit, timer, glow plug and control element are designed for 12V or 24V.
The drive unit, fuel pump, exhaust temperature sensor and external room temperature sensor are independent of voltage.
Fuel for Air Top Evo 40 B / Air Top Evo 55 B (benzin):
The fuel specified by the manufacturer in accordance with DIN EN
228 must be used.
Fuel for Air Top Evo 40 D / Air Top Evo 55 D (diesel/PME):
The diesel fuel specified by the manufacturer in accordance
with DIN EN 590 must be used. We know of no negative influences due to additives. If fuel is extracted from the vehicle’s
tank, follow the additive instructions issued by the vehicle manufacturer. If you change to low-temperature fuel, the heater
must be operated for approximately 15 minutes so that the fuel system is filled with the new fuel. The Air Top Evo 40 D / Air
Top Evo 55 D unit is also approved for operation with PME (bio-diesel) which complies with the standard DIN EN 14214.
About table: Values in brackets apply to the increased heating capacity which is activated for a limited time during each start-
up.
19
Air Top Evo 40 / Air Top Evo 55 Service Manual
Summary of Contents for Air Top Evo 40
Page 63: ...4 2015...
