Troubleshooting; Fault Code Output - Webasto MultiControl Installation Instructions Manual

8

Troubleshooting

8.1

Fault code output

The heater will output a fault code on the control
element if a fault occurs during heating mode.
Pressing the quick start button confirms the error
X
display.
You will find further information in the operating
instructions.
Table of internal control element errors "Txx"
Fault code Faults
Ted Supply voltage too high
Te3 Display background illumination faulty
Te4 Defective LED status
Te5 Temperature sensor error
Te6 W-bus temperature sensor error
T12 Communication error on the W-bus
Te7/Te8 Flash
Tea Faulty feedback signal from heater (ST)
Tec Control knob sticking
T46 Excess current/short circuit at switch output SAU1
Te0 Reduced voltage
T84 Operating voltage too low
Te1 Ambient temperature too low/high
Teb RTC fault
MultiControl | SmartControl
An error that has occurred is shown on the control
element display as Txx or Fxx and the LED flashes
red. The error display also appears after waking
up the control element from standby and must be
confirmed by pressing the control knob or the quick
start button. This error is saved in the error entries
in the control element menu (menu element "Error
entry") and can be called up. Selecting "Reset"
in the customer menu deletes all error entries for
the control element.
Fault description
Supply voltage exceeds 36V.
Temperature sensor of MultiControl | SmartControl
faulty.
Temperature from external sensor (W-bus) cannot
be read correctly.
Control knob pressed for longer than 10 seconds.
Current exceeds 500mA.
Supply voltage is below value set by technician.
Supply voltage is less than 8V.
Ambient temperature is outside the operating range
of -20°C to +70°C.
Troubleshooting
Check car electrical installation.
Contact Webasto service workshop.
Contact Webasto service workshop.
Contact Webasto service workshop.
Check installation. Replace sensor if necessary.
Check installation.
Contact Webasto service workshop.
Check installation.
Contact Webasto service workshop.
Check installation. Ensure that the consumer at
the switch output SAU1 is not drawing more than
500mA.
Charge the battery and check car electrical instal-
lation.
Charge the battery and check car electrical instal-
lation.
The error disappears automatically when the
ambient temperature is once more within the range
of -20°C to +70°C.
In case of voltage interruption lasting more than
8 minutes: Enter day/time again.
If this error appears without voltage interruption:
Contact Webasto service workshop.
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