Dual Top 3 Fault code output
301
3 Fault code output
NOTE
This chapter describes the fault codes given out by the man-
ual and programmable Control Panels.
Replacement of parts, dismantling and assembly (e.g. for in-
spection and cleaning) is described in chapter 7: "Repair".
3.1 Manual Control Panel
Abb. 301 Manual Control Panel
The manual Control Panel is used for RHA 100 heaters only.
The heater is able to identify faults on individual
components and during the operation.
The Control Panel gives out the fault code in a flashing
mode.
After a series of 5 fast GREEN flashes, the fault code output
will be a repeated sequence of long RED flashes. After that,
again there will be 5 fast GREEN flashes. This process is
repeated until the heater is switched off. The meaning of
the number of red flashes is shown in: Table 301: "Fault
messages manual Control Panel".
Rectify the cause of the fault.
To reset the fault, switch the heater off (at least 5 seconds)
and then turn back on.
If serious malfunctions such as overheating or failure to start
reoccur, the heater is locked and can be put back into serv-
ice by deleting the failures.
Do this by disconnecting the power supply (e.g. by removing
all 3 fuses in this sequence: 5A, 10A, 15A; inserting the fus-
es in reversed order), while the appliance is switched on (see
Operating Instructions, mode selector knob in position 1, 2,
3, 4 or 5), but the heater is not running (to be judged by the
sound of the heater).
Deleting failures can also be done with the Webasto Thermo
Test PC-Diagnosis.
If a fault occurs, the heater stops. In case of electrical safety/
drain valve fault (17 red flashes), heating of the interior is
still possible.
Fig. 302 Example of fault code
LED
“n” x red 5 x green5 x green
1“n”2