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FORM 201.26-NM1
ISSUE DATE: 1/19/2018
Unit Status
Pressing the STATUS key will enable the operator to
determine current chiller operating status. The messag-
es displayed will include running status, cooling de-
mand, fault status, external cycling device status. The
display will be a single message relating to the highest
priority message as determined by the microprocessor.
Status messages fall into the categories of General Sta-
tus and Fault Status.
The following General, Safety, and Warning messages
are displayed when the STATUS key is pressed. Fol-
lowing each displayed message is an explanation per-
taining to that particular message.
General Status Messages
In the case of messages which apply to individual
systems, SYS 1 and SYS 2 messages will both be dis-
played and may be different. In the case of single sys-
tem units, all SYS 2 messages will be blank.
U N I T
S W I T C H
S H U T D O W N
This message informs the operator that the UNIT switch
on the control panel is in the OFF position which will
not allow the unit to run.
JOHNSON CONTROLS
STATUS KEY
The REMOTE CONTROLLED SHUTDOWN mes-
sage indicates that either an ISN system or RCC has
turned the unit OFF, not allowing it to run.
The DAILY SCHEDULE SHUTDOWN message in-
dicates that the daily/holiday schedule programmed is
keeping the unit from running.
REMOTE STOP NO RUN PERM shows that the re-
mote start/stop contact is open. These contacts are con-
nected to J13-5. A 3-second delay is built into the soft-
O F F
ware to prevent nuisance shutdowns due to erroneous
signals on the run permissive input.
S Y S
S Y S
SYS SWITCH OFF tells that the system switch under
OPTIONS is turned OFF. The system will not be al-
lowed to run until the switch is turned back ON.
SECTION 7 – UNIT CONTROLS
R E M O T E
C O N T R O L L E D
S H U T D O W N
D A I L Y
S C H E D U L E
S H U T D O W N
REMOTE
STOP
NO RUN PERM
1
S Y S
S W I T C H
2
S Y S
S W I T C H
7
O F F
O F F
117
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