Displayed when an error is detected in the memory
(EEPRom), analog-digital converter output (ADC Off Set) or
CPU watchdog (Watch Dog-1, Watch Dog-2).
EEP Err: An error in reading/writing parameters due to
keypad or memory (EEPRom) fault.
ADC Off Set: An error in the current sensing circuit (U/V/W
terminal, current sensor, etc.).
Displayed when an error is detected in the temperature
sensor of the Insulated Gate Bipolar Transistor (IGBT).
Displayed when an error is detected in the cooling fan(s). Set
PRT-79 to ‘0’ to activate fan trip.
Occurs when an abnormality is detected with the internal
cooling fan(s). Applies to 150 ~ 800 HP. Activates when
PRT-79 is set to 0 (Trip).
Triggered when the input from an external temperature
sensor (PTC) is higher (or lower) than the level set by the
user. Refer to parameters PRT-34 ~ PRT-38.
Triggered when a communication error occurs between the
keypad and the inverter, when the keypad is the command
source, and PRT-11 (Lost KPD Mode) is set to any other
value than ‘0’.
Internal input fuse open for inverters 500 HP and larger.
Abnormality at the I/O TB PCB.
Communication abnormality between I/O CPU PCB and
Control PCB.
Connection or communication issue between the LCD and
the Control PCB.
Triggered when the damper open signal or run command
signal is longer than the value set at AP2-45 (Damper
CheckT) during a fan operation.
Triggered when the pump clean operation is operated
frequently. The conditions may be modified with the AP2-36~
AP2-37 settings.
Triggered when a pipe is broken during the pump operation.
Associated parameters PRT-60 ~ PRT-62.
Triggered when the inverter output current or power is lower
or higher than the set values. Associated parameters PRT-
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