LSIS 6731001500, User Manual

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Troubleshooting
564
General Fault Trips
LCD Display Type Description
Damper Err Latch
Triggered when the damper open signal or run command signal is
longer than the value set at AP2-45 (Damper Check T) during a fan
operation.
MMC Interlock Latch
Triggered when AP1-55 is set to ‘2’ and all auxiliary motors are
interlocked during an MMC operation.
CleanRPTErr Latch
Triggered when the pump clean operation is operated frequently.
The conditions may be modified with theAP2-36–AP2-37 settings.
Pipe Broken Latch
Triggered when a pipe is broken during the pump operation. Set
PRT-60.
Level Detect Latch
Triggered when the inverter output current or power is lower or
higher than the values set by the user. Set the values at PRT-71–
PRT-77.
Broken Belt Latch Triggered when PRT-91 is set to Free Run
Option Protection
LCD Display Type Description
Lost Command Level
Displayed when a frequency or operation command error is
detected during inverter operation by controllers other than the
keypad (e.g., using a terminal block and a communication mode).
Activate by setting PRT-12 to any value other than ‘0’.
IO Board Trip Latch
Displayed when the I/O board or external communication card is
not connected to the inverter or there is a bad connection.
ParaWrite Trip Latch
Displayed when communication fails during parameter writing.
Occurs due to a control cable fault or a bad connection.
Option Trip-1 Latch
Displayed when a communication error is detected between the
inverter and the communication board. Occurs when the
communication option card is installed.