Fan VFD Controller
www.DaikinApplied.com 101
IOM 1206-13 • TRAILBLAZER
®
MODEL AGZ CHILLERS
Table 83: Types of Alarms, Faults, and Errors
Type
Drive Response
Faults
When the drive detects a fault:
• The digital operator displays text indicating the specific fault and the ALM indicator LED remains lit until the
fault is reset.
• The fault interrupts drive output and the motor coasts to a stop. • Some faults allow the user to select the
stopping method when the fault occurs.
• Fault output terminals MA-MC will close, and MB-MC will open.
The drive will remain inoperable until the fault is cleared.
Minor Faults
and Alarms
When the drive detects an alarm or a minor fault:
• The digital operator displays text indicating the specific alarm or minor fault, and the ALM indicator LED
flashes.
• The drive continues running the motor, although some alarms allow the user to select a stopping method
when the alarm occurs.
• A multi-function contact output set to be tripped by a minor fault closes. If the output is set to be tripped by an
alarm, the contact will not close.
• The digital operator displays text indicating a specific alarm and the ALM indicator LED flashes.
Remove the cause of the problem to reset a minor fault or alarm.
Operation
Errors
An operation error occurs when parameter settings conflict or do not match hardware settings (such as with an
option card).When the drive detects an operation error:
• The digital operator displays text indicating the specific error. • Multi-function contact outputs do not operate.
The drive will not operate the motor until the error has been reset. Correct the settings that caused the
operation error to clear the error.
Tuning Errors
Tuning errors occur while performing Auto-Tuning. When the drive detects a tuning error:
• The digital operator displays text indicating the specific error. • Multi-function contact outputs do not operate.
• Motor coasts to stop.
Remove the cause of the error and repeat the Auto-Tuning process.
Copy Function
Errors
Copy Function Errors occur when using the digital operator or the USB Copy Unit to copy, read, or verify
parameter settings.
• The digital operator displays text indicating the specific error.
• Multi-function contact outputs do not operate.
Pressing any key on the digital operator will clear the fault. Investigate the cause of the problem (such as model
incompatibility)and try again.
Table 84: Fault Reset Methods
After the Fault Occurs
Procedure
Fix the cause of the fault,
restart the drive, and reset
the fault
Press RESET on the controller.
Resetting via Fault Reset
Digital Input S4
Close then open the fault signal
digital input via terminal S4. S4 is
set for “Fault Reset” as default
(H1-04 = 14)
Turn off the main power
supply if the above methods
do not reset the fault.
Reapply power after the
controller display has turned
off.
NOTE:
When a fault occurs, the cause of the fault must
be removed and the drive must be restarted. The
above table list the various ways to restart the drive.
Remove the Run command before attempting to clear
a fault. If the Run command is present, the control will
disregard any attempt to reset the fault.
