Carrier WeatherExpert 48LC Series Service And Maintenance Instructions page 57

ALARM CODE ALARM NAME IN PANEL
2001
2002
2003
DIR LOCK
2004
I/O COMM
2005
AI1 LOSS
2006
AI2 LOSS
2007
PANEL LOSS
2008
2009
MOT OVERTEMP
2010
UNDERLOAD
2011
MOTOR STALL
2012
AUTORESET
2013*
AUTOCHANGE
2014
PFA INTERLOCK
2015
2016
OFF BUTTON
2017*
PID SLEEP
2018
ID RUN
2019
OVERRIDE
2020
START ENABLE 1 MISSING This alarm warns that the Start Enable 1 signal is missing. To control Start Enable 1 function, use
2021
START ENABLE 2 MISSING This alarm warns that the Start Enable 2 signal is missing. To control Start Enable 2 function, use
2022
EMERGENCY STOP
2023
Table 30 — Alarm Codes
- Reserved
- Reserved
- Reserved
The change in direction being attempted is not allowed. Do not attempt to change the direction of
motor rotation, or change parameter 1003 DIRECTION to allow direction change (if reverse operation
is safe).
Field bus communication has timed out. Check fault setup (3018 COMM FAULT FUNC and 3019
COMM FAULT TIME). Check communication settings (Group 51 or 53 as appropriate). Check for
poor connections and/or noise on line.
Analog input 1 is lost, or value is less than the minimum setting. Check input source and connections.
Check the parameter that sets the minimum (3021) and the parameter that sets the Alarm/Fault
operation (3001).
Analog input 2 is lost, or value is less than the minimum setting. Check input source and connections.
Check parameter that sets the minimum (3022) and the parameter that sets the Alarm/Fault operation
(3001).
Panel communication is lost and either the VFD is in local control mode (the control panel displays
HAND), or the VFD is in remote control mode (AUTO) and is parameterized to accept start/stop,
direction or reference from the control panel. To correct, check the communication lines and
connections, Parameter 3002 PANEL LOSS, and parameters in groups 10 COMMAND INPUTS and
11 REFERENCE SELECT (if drive operation is REM).
- Reserved
Motor is hot, based on either the VFD estimate or on temperature feedback. This alarm warns that a
Motor Overload fault trip may be near. Check for overloaded motor. Adjust the parameters used for
the estimate (3005 through 3009). Check the temperature sensors and Group 35 parameters.
Motor load is lower than expected. This alarm warns that a Motor Underload fault trip may be near.
Check that the motor and drive ratings match (motor is NOT undersized for the drive). Check the
settings on parameters 3013 to 3015.
Motor is operating in the stall region. This alarm warns that a Motor Stall fault trip may be near.
This alarm warns that the drive is about to perform an automatic fault reset, which may start the
motor. To control automatic reset, use parameter group 31 (AUTOMATIC RESET).
This alarm warns that the PFA autochange function is active. To control PFA, use parameter group 81
(PFA) and the Pump Alternation macro.
This alarm warns that the PFA interlocks are active, which means that the drive cannot start any
motor (when Autochange is used), or a speed regulated motor (when Autochange is not used).
- Reserved
This alarm indicates that the OFF button has been pressed.
This alarm warns that the PID sleep function is active, which means that the motor could accelerate
when the PID sleep function ends. To control PID sleep, use parameters 4022 through 4026 or 4122
through 4126.
The VFD is performing an ID run.
Override mode is activated.
parameter 1608. To correct, check the digital input configuration and the communication settings.
parameter 1609. To correct, check the digital input configuration and the communication settings.
Emergency stop is activated.
DESCRIPTION AND RECOMMENDED CORRECTIVE ACTION
57