User`s manual

250 • Vacon apfiff09 marine

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F29 Thermistor fault

The thermistor input of the option board has detected too high a motor temperature.

Possible cause:

1. Motor is overheated.

2. Thermistor cable is broken.

Correcting measures:

 Check motor cooling and load

 Check thermistor connection(If thermistor input of the option board is not in use it has

to be short circuited).

F31 IGBT temperature Hardware

IGBT Inverter Bridge over temperature protection has detected too high a short term overload

current.

Possible cause:

1. Too high load

2. Identification run has not been made which causes the motor to start under magnetized.

Correcting measures:

 Check load.

 Check motor size.

 Make identification Run.

F32 Fan cooling

Possible cause:

1. Cooling fan of the frequency converter does not start when ON command is given.

Correcting measures:

 Contact your local distributor.

F37 Device change

Option board or power unit changed.

Possible cause:

1. New device of same type and rating.

Correcting measures:

 Reset. Device is ready for use.

F38 Device added

Option board added.

Correcting measures:

 Reset. Device is ready for use. Old board settings will be used.