Heater cuts out automatically
Black smoke is emitted from the heater
Cause
Cause
Remedy
Remedy
Troubleshooting
Error code output on combination timer or control element
If an error occurs, first check the fuse and plug connections to ensure that they are in
perfect condition and connected correctly.
If the action described below does not rectify the error, have the heater checked by
Webasto-trained personnel.
Control unit error
No start (after 2 attempts to start)
Flame failure (at least > 3)
Undervoltage or overvoltage
Premature flame recognition
Temperature sensor interrupt or temperature
sensor short circuit
Metering pump interrupt or metering pump
short circuit
Fan motor interrupt or fan motor short circuit
or fan motor overload or blocked
Glow plug interrupt or glow plug short circuit
Overheating
Overheating sensor interrupt or overheating
sensor short circuit
Heater lock-out
Heater lock-out permanent
Overheating sensor incorrectly installed
Setpoint generator short circuit
F 00
F 11
F 12
F 13
F 14
F 15
F 01
F 02
F 03
F 04
F 06
F 07
F 08
F 09
F 10
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.
If the system is fitted with a control element, when an error occurs an error code is output
by the indicator/error code display 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.
Error code
Meaning
If serious errors, such as overheating or no start, occur frequently, the heater will be set
to permanent fault lock-out (F 12 or F 13) and cannot be restarted until it has been
repaired by Webasto-trained personnel.
No combustion after start
and repeat start
Flame extinguishes during
operation
Heater overheats
Indicator flashes
Vehicle voltage too low
Combustion air and/or
exhaust system blocked
Switch the heater off (wait at least 2 seconds) and
then on again
Switch the heater off (wait at least 2 seconds) and
then on again
Check that the hot air can flow freely.
Allow the heater to cool.
Switch the heater off (wait at least 2 seconds) and
then on again
Charge battery
Switch the heater off (wait at least 2 seconds) and
then on again
Check combustion air and exhaust system for
blockages
Heater Lockout Reset Procedure
1.
Using switch or standard timer control, turn heater on
.
2.
Within 10 seconds r
emove the main power connection to heater from battery or pull
fuse for a minimum of 20 seconds.
3.
Using switch or standard timer control, turn the heater off.
4.
Reinstall main heater power connection where previously disconnected.
Rectify the cause of the fault.
IMPORTANT: Heater fault codes can be read using PC Diagnostics, however, the
heater lockout reset must be manually performed using the procedure stated above.
If you have any questions, contact our technical support team at (800) 860-7866 or via
email at: [email protected].
