Fault code output
115
Table 1:
Fault messages of manual heater control
Number of RED
flashes
Meaning Remedy
00
No communication between Control Panel and heater, or error
Control Panel
First, remove fuses 15 A and 5 A. Then put in fuse 15 A, followed by fuse 5 A.
Check connections of Control Panel.
Check fuse 15 A.
Check wiring harness.
Contact a Webasto service station.
01
No start (after 2 attempts to start)
Check fuel supply (enough fuel, at least 8 ltr.; check fuel connection and tubes),
reset heater (by switching off for at least
30
sec.)
02
Flame failure
Restart not successful
See fault code 01
03
Under voltage or over voltage
Charge battery or connect to another power source (12 V DC),
reset heater (by switching off for at least 5 sec.)
04
Fuel pump disconnection / short circuit / overheating
Check fuel pump cable and connectors, check for overheating (see faults 06 and
07), reset heater (by switching off for at least 5 sec.)
05
Hot air motor fault: disconnection / short circuit / fan speed out of
range / fan blocked
Ensure that hot interior air fan can rotate freely, remove possible blocking
objects, reset heater (by switching off for at least 5 sec.)
06
Overheating or exceeding gradient water temperature sensor
Check water level, reset heater (by switching off for at least 5 sec.) or select winter
mode without hot water production
07
Overheating or exceeding gradient hot air temperature sensor
Ensure that hot air can flow freely, air intake and outlets are not blocked.
Reset heater (by switching off for at least 5 sec.)
08
Overheating of heaters' control unit
Ensure that cooling air can flow freely,
reset heater (by switching off for at least 5 sec.)
09
Combustion air motor fault: disconnection / short circuit / overload
/ blocked
Ensure that cooling fan can freely rotate,
remove possible blocking objects.
Check fuse 15 A.
10
Control unit fault / heater locked
Put heater back into service (see beginning of section) and restart heater.
Contact a Webasto service station.
11
Interior temperature sensor disconnection or short circuit
Check routing of cable, avoid that it is pinched or crushed, check the connector
behind the control panel.
Reset heater (by switching off for at least 5 sec.)
12
Hot air temperature sensor disconnection / short circuit
Reset heater (by switching off for at least 5 sec.)
Contact a Webasto service station.
