Fault Code Output (Hexadecimal / Webasto Thermo Test) - Webasto Air Top 2000 STC Workshop Manual

Air Top 2000 STC
5.4

Fault code output (hexadecimal / Webasto Thermo Test)

Fault code
output:
Fault message
HEX
00
01 Defective control unit
02
03
04 Supply Voltage too high
Flame was detected prior to
05
06 Heating unit overheated
07 Heater lock-out
08 Fuel pump short circuit
Combustion air fan short
09
11 Wrong fuel coding
No error
Defective control unit, wrong end-
of-line programming or coolant
After start-up has been repeated,
No start
combustion still fails to occur
Flame failure
Supply voltage was too long above
Flame detector signals flame
combustion before combustion operation
Overheat protection has been
activated or the temperature at the
heat exchanger has exceeded the
Fuel pump has short circuit to
Combustion air fan has short
circuit
Incorrect parameter block or
wrong heater (diesel/gasoline)
Fault details
No error
temperatur sensor (at water
heaters) failure
The flame went out during
operation and combustion.
maximum threshold value
upper limit
Heater interlocked
ground
circuit to ground
used
5 Troubleshooting
Recommended measures
No action necessary
Replace control unit
1) Check for fault in air intake and
exhaust systems
2) Check for fault in fuel system
3) Check fuel pump
4) Electrical check of glow plug
See error 02
Check system voltage
1) Check for fault in air intake,
exhaust systems
2) Check for fault in fuel system
3) Check fuel pump
4) Electrical check of glow plug
1) Check for fault in air intake/blow-
out side, exhaust systems
2) Check for fault in fuel system
1) Reset heater lock-out and attempt
restart
2) Read out further fault messages
and work through instructions
Reset heater lock-out: switch on
heater. Pull fuse F1 for at least 10 s.
Switch off heater. Reinsert fuse F1.
Switch on the heater.
NOTE
Following fault occurred several
times:
Fault counter:
False start counter:
Overheating counter:
Electrical check of fuel system
Electrical check of combustion air fan
motor
Replace control unit
> 10x
> 7x
> 20x
503