Webasto Air Top 2000 ST Operating Instructions Manual - page 7
If the system is fitted with a combination timer, when an error occurs an error code is output
on the timer's display until the heater has been rectified.
The error code is output if the heater is fitted with a control element after an error has oc-
curred by the switch-on indicator/error code indicator flashing. After a burst of fast flashes
the error code will be output by a sequence of long flashes, the number of which is shown
in the table below.
If serious malfunctions such as overheating or failure to start reoccur, the heater is locked
(F 12) and can be put back into service by disconnecting the power supply with the heater
switched on (e.g. by removing fuse).
Error code
Meaning
F 00
Control unit error
F 01
No start (after 2 starting attempts)
F 02
Flame failure (at least > 3)
F 03
Undervoltage or overvoltage
F 04
Premature flame recognition
F 05
Flame monitor (petrol heater) interrupt or
short circuit
F 06
Temperature sensor interrupt or tempera-
ture sensor short circuit
F 07
Metering pump interrupt or metering pump
short circuit
F 08
Fan motor interrupt or
fan motor short circuit or
fan motor overload or blocked
F 09
Glow plug interrupt or
glow plug short circuit
F 10
Overheating
F 11
Overheating sensor interrupt or overheating
sensor short circuit
F 12
Heater unit lock-out
F 14
Overheating sensor installed incorrectly
F 15
Setpoint generator short circuit
Error code output on combination timer or control element
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