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MESSTEC Power Converter GmbH
Operating Manual
TEC Controller
Document: 10100920OM
Revision: 1.1
Date: 10.10.2019
Page 27/71
6. Indicator elements
There are 3 different groups of LED indicators:
Indication of operating states
Indication of serial data transfer
Monitoring of supply voltages
6.1. Indication of operating states
6.1.1. Indicator LEDs
Fig. 18: Operating states indicator LEDs
CAN LED
Currently not used.
ERROR LED
Indication of error states.
LED Off:
no error
LED one flash:
Sensor error (short circuit or open sensor wiring)
LED two flashes:
Output current too high (external short circuit)
LED three flashes:
internal over temperature of power stage
Description of error states see chapter: Error States.