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If Purge Pumpout Valve is accumulated ON for 100 minutes,
purge system will do regeneration process regardless purge
active or not.
19DV provides Motor Rotation check function. In Quick
Test table, enable quick test, then enable Motor Rotation
Check. The controller will initiate the check process. Service
will observe from the lens on chiller to see if the Motor is
properly installed.
When chiller type is 19XR2~E/V/D, Congure Heat Reclaim
option in Factory table, select Full or Partial. Heat Reclaim
Entering Temp and Heat Reclaim Leaving Temp will show
on the controller home page and condenser status page. (IO
channel: IOB3 AI3 & AI4)
PIC 5+ controller provides onboard service log, it can be
access from Alarm Menu. Service can add General or Carrier
service log based on the login level. Service log contains
service technician basic information, service content, and
pre-stored maintenance sub items. Service log will be saved
when controller reboot or software upgraded.
PIC 5+ provides smart password for better security, and the
password changes periodically. With smart password, only
authorized people can login controller and do chiller service.
Only carrier authorized technicians can access key product
conguration and maintenance data.
PIC 5+ provides Heat Exchange Performance Plot, it can be
access from Alarm Menu. This function can be enabled in
Prognostic table, set the threshold for condenser and
evaporator LTD. After chiller running for 3 hours, the
controller will start plotting with color according to LTD
setting after chiller running 3 hours. So the user can get the
LTD information more intuitively.
This section provides the overview of actions to be taken in
case any operating problems occur.
6.1 - General
The 19 Series PIC 5+ control system has many fault tracing
aid functions. The local interface and its various menus give
access to all unit operating conditions.
If an operating fault is detected, an alarm is activated. The
alarm code is displayed in the Alarms menu, sub-menus
“Reset alarms” and “Current alarms”. The control may record
up to 10 current alarms and alerts.
The alarm icon on the interface (see section 4.5) allows the
quick display of the unit status.
- A ashing LED shows that the unit is operating but
there is an alert.
- A steady LED shows that the unit has been shut down
due to a fault.
The “Reset alarms” menu on the main interface displays up
to ve alarm codes that are active on the unit.
When the cause of the alarm has been identified and
corrected, the alarm can be reset, depending on the type
either automatically or manually (once the action has been
taken on the unit).
In the event of a power supply interrupt, if Auto Restart
Option is set to ENABLE in Option conguration menu, the
unit restarts automatically without the need for an external
command. However, any faults active when the supply is
interrupted are saved and may in certain cases prevent a unit
from restarting.
A manual reset must be run from the main interface via the
ALARMRST menu, item RST_ALM.
NOTE: Please note that once the alarm has been corrected
or reset, all information regarding solved alarms will be
stored in the Alarm History.
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