Fault Lock-Out - Webasto Air Top 2000 B Notice De Montage

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Air Top 2000
15

Fault lock-out

The control unit has identified errors on individual heater components
and faults during the starting procedure.
The heater is shut down (fault lock-out) if:
– Flame monitor resistance illegal
– Temperature sensor resistance too low
– Glow plug / actuation defective
– Blower speed too low or short circuit or break
– Error in the metering pump or overheating guard circuit
(start phase only)
– Undervoltage less than 10 V or overvoltage greater than 15 V and for
longer than 20 seconds (on 12 V heater)
– Undervoltage less than 20 V or overvoltage greater than 30 V and for
longer than 20 seconds (on 24 V heater)
– Control unit defective
In the event of overheating no fuel will be supplied. A shut-down process
will be carried out as if the heater had been shut down manually.
After it stops the control unit will be set to fault lock-out.
The overheating is indicated by the indicator flashing. Rectify the cause
of the fault.
To reset the fault switch the heater off briefly (at least 2 seconds) and
then on again.
15.1. Error code output
NOTE:
The error code is output if the heater is fitted with a control element after
an error has occurred by the switch-on indicator/error code indicator
flashing. After 5 seconds of fast flashing, the error code will be output by
a sequence of long flash pulses, the number of flashes is shown in the
table below.
If the heater is fitted with a combination timer, an error message will
appear on the display of the timer after a fault occurs. If the control
element is used the error number is indicated by the indicator light
flashing:
F 01 No start (after 2 attempts to start)
F 02 Flame failure (repeated >5)
F 03 Undervoltage or overvoltage
F 04 Premature flame recognition
F 05 Flame monitor interrupt or
flame sensor short-circuit
F 06 Temperature sensor interrupt or
temperature sensor short-circuit
F 07 Metering pump interrupt or metering pump short circuit
F 08 Fan motor interrupt or fan motor short circuit
or blower motor incorrect speed
F 09 Glow plug interrupt or glow plug short circuit
F 10 Overheating
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Fault lock-out
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