Danfoss VLT HVAC Operating Instructions Manual page 128

7. Troubleshooting
WARNING 62
Output Frequency at Maximum Limit:
The output frequency is higher than the value
set in par. 4-19
WARNING 64
Voltage Limit:
The load and speed combination demands a
motor voltage higher than the actual DC link
voltage.
WARNING/ALARM/TRIP 65
Control Card Over Temperature:
Control card over temperature: The cut-out
temperature of the control card is 80° C.
WARNING 66
Heatsink Temperature Low:
The heat sink temperature is measured as 0°
7
C. This could indicate that the temperature
sensor is defective and thus the fan speed is
increased to the maximum in case the power
part or control card is very hot.
ALARM 67
Option Configuration has Changed:
One or more options has either been added or
removed since the last power-down.
ALARM 68
Safe Stop Activated:
Safe Stop has been activated. To resume nor-
mal operation, apply 24 V DC to terminal 37,
then send a reset signal (via Bus, Digital I/O,
or by pressing [RESET]). For correct and safe
use of the Safe Stop function follow the rela-
ted information and instructions in the Design
Guide
ALARM 70
Illegal Frequency Configuration:
Actual combination of control board and pow-
er board is illegal.
128
ALARM 80
Initialization to Default Value:
Parameter settings are initialised to default
setting after a manual (three-finger) reset.
MG.11.A4.02 - 09.10.06. VLT ® is a registered Danfoss trademark
®
VLT HVAC Drive Operating Instructions