Danfoss VLT FC 102 Programming Manual page 742

Programming Guide | VLT® HVAC Drive FC 102
WARNING/ALARM 90, Feedback Monitor
Cause
A feedback fault is detected by option B.
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.
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WARNING/ALARM 92, No Flow
Cause
A no-flow condition has been detected in the system. Parameter 22-23 No-Flow Function is set for alarm.
Troubleshooting
Troubleshoot the system and reset the drive after the fault has been cleared.
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WARNING/ALARM 93, Dry Pump
Cause
A no-flow condition in the system with the drive operating at high speed may indicate a dry pump. Parameter 22-26 Dry Pump Function
is set for warning or alarm.
Troubleshooting
Troubleshoot the system.
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Reset the drive when the fault is cleared.
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WARNING/ALARM 94, End of Curve
Cause
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 warning
or alarm.
Troubleshooting
Troubleshoot the system.
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Reset the drive when the fault is cleared.
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WARNING/ALARM 95, Broken Belt
Cause
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 and reset the drive after clearing the fault.
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WARNING 96, Start Delayed
Cause
Motor start has been delayed due to short-cycle protection. Parameter 22-76 Inverval between Starts is enabled.
Troubleshooting
Troubleshoot the system.
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742 | © 2024.10
Troubleshooting
AU430028034214en-001901 / 130R0310