JOHNSON CONTROLS
114
FORM 150.66-NM3
ISSUE DATE: 09/25/2020
SECTION 7 - UNIT CONTROLS
L E A D S Y S T E M I S
S Y S T E M N U M B E R X
Displays which system is in the lead at the time of the
fault.
E V A P P U M P I S X X X
E V A P H E A T E R I S X X X
Displays status of the Evaporator Pump and Heater at
the time of the fault.
A C T I V E R E M O T E C T R L
X X X X
Displays whether Remote Chiller Control was active
when the fault occurred.
U N I T A C T U A L A M P S
= X X X . X A M P S
This is only displayed when the Current Feedback Op-
tion is one per unit.
S Y S X C O M P S T A T U S
1 = X X X 2 = X X X 3 = X X X
Displays which Compressors were running in the sys-
tem when the fault occurred.
S Y S X R U N T I M E
X X - X X - X X - X X D - H - M - S
Displays the system run time when the fault occurred.
S Y S X S P = X X X X P S I G
D P = X X X X P S I G
Displays the system Suction and Discharge Pressure of
the time of the fault.
S Y S X S U C T = X X X . X ° F
S A T S U C T = X X X . X ° F
Displays the System Suction Temp and Saturated Suc-
tion Temp when an EEV is installed.
S Y S X E E V = X X X . X %
S U C T S H E A T = X X X . X ° F
Displays the EEV signal % and Suction Superheat
when an EEV is installed.
S Y S X C O O L E R I N L E T
R E F R I G T E M P = X X X . X ° F
System Inlet cooler temperature will be displayed only
on R-407c units.
S Y S X L L S V I S X X X
H O T G A S S O L I S X X X
Displays whether the System Liquid Line Solenoid
or Hot Gas Solenoid was energized at the time of the
fault.
S Y S X F A N S T A G E X X X
Displays the number of Fan Stages in the system active
at the time of the fault.
S Y S X A C T U A L A M P S
= X X X . X A M P S
Displays the system Amperage (calculated approxi-
mately) at the time of the fault.
For this message to appear, CURRENT FEEDBACK
ONE PER SYSTEM must be programmed under the op-
tions key. If the microprocessor is programmed as one
CURRENT FEEDBACK ONE PER UNIT under the
program key, the display will be the rst display prior to
the SYS 1 info. If the microprocessor is programmed
for CURRENT FEEDBACK NONE, no current dis-
play will appear.
Displays for System 1 starting with SYS X NUMBER
OF COMPS RUNNING X through SYS X AMPS =
XXX.X VOLTS = X.X will be displayed rst, followed
by displays for System 2.
Further explanation of the above displays is cov-
ered under the STATUS, OPER DATA, COOLING
SETPOINTS, PROGRAM, and OPTIONS keys.
Software Version
The software version may be viewed by rst pressing
the HISTORY key and then the ↓ (DOWN) arrow key.
After pressing the HISTORY key, the display safety
shutdown message will be displayed.
D I S P L A Y S A F E T Y S H U T -
D O W N N O . 1 ( 1 T O 6 )
After the ↓ (DOWN) arrow key is pressed, the software
version will appear.
S O F T W A R E V E R S I O N
C . M M C . 0 3 . 0 6
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