Webasto DUAL TOP RHA 100 Installation Instructions Manual page 46

Fault lock-out
Number of RED Meaning
flashes
00 No communication between Control Panel and heater, or error
Control Panel
01 No start (after 2 attempts to start)
02 Flame failure
Restart not successful
03 Under voltage or over voltage
04 Fuel pump disconnection / short circuit / overheating
05 Hot air motor fault: disconnection / short circuit / fan speed out of
range / fan blocked
06 Overheating or exceeding gradient water temperature sensor
07 Overheating or exceeding gradient hot air temperature sensor
08 Overheating of heaters' control unit
09 Combustion air motor fault: disconnection / short circuit / overload
/ blocked
10 Control unit fault / heater locked
11 Interior temperature sensor disconnection or short circuit
12 Hot air temperature sensor disconnection / short circuit
13 Water temperature sensor disconnection / short circuit
14 Glow plug / flame detector disconnection / short circuit
44
Remedy
First, remove fuses 15A and 5A. Then put in fuse 15A, followed by fuse 5A.
Check connections of Control Panel.
Check fuse 15A.
Check wiring harness.
Contact Webasto.
Check fuel supply (enough fuel, at least 8 ltr.; check fuel connection and tubes),
reset heater (by switching off for at least 30 sec.)
See fault code 01
Charge battery or connect to another power source (12V DC),
reset heater (by switching off for at least 5 sec.)
Check fuel pump cable and connectors, check for overheating (see faults 06 and
07), reset heater (by switching off for at least 5 sec.)
Ensure that hot interior air fan can rotate freely, remove possible blocking
objects, reset heater (by switching off for at least 5 sec.)
Check water level, reset heater (by switching off for at least 5 sec.) or select
winter mode without hot water production
Ensure that hot air can flow freely, air intake and outlets are not blocked.
Reset heater (by switching off for at least 5 sec.)
Ensure that cooling air can flow freely,
reset heater (by switching off for at least 5 sec.)
Ensure that cooling fan can freely rotate,
remove possible blocking objects.
Check fuse 15A.
Put heater back into service (see above this table) and restart heater.
Contact Webasto
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.)
Reset heater (by pressing OK or switching off for at least 5 sec.).
Contact Webasto
See fault code 12
See fault code 12
Dual Top