Webasto Air Top Series Operating Instructions Manual - page 8
8
If the system is fitted with a combination timer, when an error occurs an error code is dis-
played on the timer's screen until the heater has been properly repaired.
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 displayed by a sequence of long flashes, the number of which is shown
in the table below.
If serious malfunctions such as overheating or failure occur, the heater will go into a locked
state (F 12). This state can be reset by using the following heater lockout reset procedure.
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 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
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
Defective controller / open or short circuit
F 16
Exhaust temperature exceeded
F 17
Exhaust gas temperature sensor defective
F 18
Low Voltage (SmarTemp error code display only) See proceeding row
for heater error code F 18.
F 18
Defective controller / open or short circuit
F 19
Plausibility of sensors incorrect (exhaust / overheat sensor)
Error code output on combination timer or control element