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CONTROL PANEL KEYS
S Y S 1 COMP S RUN 2
STATUS
S Y S 2 COMP S RUN 1
Display/Print
Entry
OPER DATA
PRINT
ENTER
HISTORY
/ADV
Status Key
This key provides a display of the current operational
and/or fault status of the unit or individual refrigerant
systems.
Display/Print Keys
These keys allow control panel display or remote
printout of both current real-time operating data as
well as fault history data from recent safety shutdowns.
Entry Keys
These keys are used for entering data required for
programming the unit, and scrolling through displays.
Setpoints Keys
These keys are used for display and programming the:
• local and remote unit liquid temperature
setpoints
• operating schedule for the unit
• unit operational settings and limits
Unit Keys
These keys allow the unit options and clock to be set.
JOHNSON CONTROLS
OPERATION
Setpoints
Unit
SETPOINTS
OPTIONS
SCHEDULE/
CLOCK
ADVANCE DAY
PROGRAM
STATUS KEY
Pressing the STATUS key displays the unit operating
status. The messages displayed include running status,
load demand, fault status, external cycling device status,
load limiting and anti-recycle/coincident timer status. The
display is single message relating to the highest priority
message as determined by the microprocessor. Status
messages fall into the categories of General Status and
Fault Status.
The following messages can be displayed when the Status
key is pressed. In the case of messages which apply to
individual systems, system 1 and system 2 messages will
both be displayed and may be different. Following each
message is an explanation of its meaning:
General Status Messages
UNIT SWITCH OFF
SHUTDOWN
The unit ON/OFF switch on the control panel is in the OFF
position which will not allow the unit to run.
REMOTE CONTROLLED
SHUTDOWN
An Integrated Systems Network (ISN), Remote
Communications Device or Building Automation System
(BAS) has turned the unit off.
DAILY SCHEDULE
SHUTDOWN
The DAILY/HOLIDAY SCHEDULE programmed is
prohibiting the unit from running.
REMOTE STOP
NO RUN PERM
A remote start/stop contact -XTB1 terminals 13 & 51 is
open and the unit will not run.
FLOW SWITCH
OPEN
FORM 150.68-ICOM1
ISSUE DATE: 10/15/2020
31
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