Danfoss VLT FC 102 Operating Manual page 80

VLT HVAC Drive FC 102
Operating Guide
Troubleshooting
• To clear the alarm, reset the unit.
7.6.72 ALARM 81, CSIV Corrupt
Cause
The CSIV file has syntax errors.
7.6.73 ALARM 82, CSIV Parameter Error
Cause
CSIV failed to initialize a parameter.
7.6.74 ALARM 88, Option Detection
Cause
A change in the option layout is detected. Parameter 14-89 Option Detection is set to [0] Frozen configuration and the option layout
has been changed.
Troubleshooting
• To apply the change, enable option layout changes in parameter 14-89 Option Detection.
• Alternatively, restore the correct option configuration.
7.6.75 ALARM 91, Analog Input 54 Wrong Settings
Troubleshooting
• Set switch S202 in position OFF (voltage input) when a KTY sensor is connected to analog input terminal 54.
7.6.76 ALARM 92, No Flow
A no-flow condition has been detected in the system. Parameter 22-23 No-flow Function is set for alarm.
Troubleshooting
• Troubleshoot the system.
• Reset the drive when the fault is cleared.
7.6.77 ALARM 93, Dry Pump
A no-flow condition in the system with the drive operating at high speed may indicate a dry pump. Parameter 22-26 Dry Pump Func-
tion is set for alarm.
Troubleshooting
• Troubleshoot the system.
• Reset the drive when the fault is cleared.
7.6.78 ALARM 94, End of Curve
Feedback is lower than the set point. This may indicate a leakage in the system. Parameter 22-50 End of Curve Function is set for
alarm.
Troubleshooting
• Troubleshoot the system.
• Reset the drive when the fault is cleared.
7.6.79 ALARM 95, Broken Belt
Torque is below the torque level set for no load, indicating a broken belt. Parameter 22-60 Broken Belt Function is set for alarm.
Troubleshooting
• Troubleshoot the system.
• Reset the drive after the fault is cleared.
7.6.80 ALARM 96, Start Delayed
Motor start has been delayed due to short-cycle protection. Parameter 22-76 Interval between Starts is enabled.
80 | Danfoss A/S © 2023.09
Diagnostics and Troubleshooting
AQ267037536117en-000101 / 130R0083