Rockwell Automation 1336 3-20HP FRN 1.01-3.01 - Manual (Page 99)

Fault Codes
Chapter 10
10-8
Slave Timeout
Freq P R
A fault has been detected originating from the Base Driver/Power Supply
Board. Check all wire and cable connections to the Base Driver/Power
Supply Board. Replace the Base Driver/Power Supply Board if required.
Hertz Error
Freq P R
The drive cannot find a valid frequency. Check the combinations of skip
frequencies to see if they completely overlap the minimum to maximum
frequency range. Check that Minimum Frequency, Parameter 16, is less
than Maximum Frequency, Parameter 19.
Hertz Select
Freq P R
A fault has been detected originating from the Main Control Board. Check
all wire and cable connections to the Main Control Board. Replace the
Main Control Board if required.
Master Timeout
Freq P R
A communication fault has been detected between the Main Control Board
and the Base Driver/Power Supply Board. Check the cable connections
between the boards. Replace the Main Control Board or Base Driver/Power
Supply Board if required.