Convotherm OEB Series Service Handbook page 127

Service manual OEB/OES/OGB/OGS
5.10.1. Troubleshooting options for the SAWI frequency converter of single-phase
appliances
Frequency converter prior to 04/2008
red LED (no.40)
Off
Flashing
On
green LED
(no.39)
On
Off
Flashing
5.10.2. Trouble shooting options for the ALTIVAR frequency converter
Information displayed by the frequency converter (Altivar 12)
The following figure shows the frequency converter (Altivar 12):
No. Name
Display
41
5_00e Troubleshooting list_L
Description
Motor is still
Motor is running
Error on the frequency converter
Intermediate circuit voltage and/or mains voltage too low
or too high.
Electronics temperature outside the permitted range.
Motor thermoprotection not connected or outside the
permitted range.
Test the connection of the motor thermoprotection and
the mains voltage.
Description
Communication with CM OK
No supply voltage
Mains voltage not connected or the FC was switched on
and off several times within a short time. This leads to
overloading of the starting current limitation. Therefore
wait 3 minutes before switching on again.
No connection / communication with CM
Test the connection of the serial interface to the
controller.
Function
Displays the operating state
Displays the error messages
Errors are shown on the display provided there is power to the
frequency converter.
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40
39
2013-01-30