JOHNSON CONTROLS
114
FORM 150.27-NM1
ISSUE DATE: 09/30/2015
SECTION 7 – UNIT CONTROLS
E V A P O R A T O R H E A T E R
S T A T U
S I S X X X
Displays status of the Evaporator Heater at the time of
the fault.
E V A P O R A T O R W A T E R
P U
M
P S T A T U
S X X X X
Displays status of Evaporator Water Pump at the time
of fault. Status may read ON, OFF or TRIP.
E V A P P U M P T O T A L R U N
H O
U
R
S = X X X X
Evap Pump total run hours at the time of 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 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
This message does not apply to a YCRL chiller.
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
OPTIONS key. If the microprocessor is programmed
as one CURRENT FEEDBACK ONE PER UNIT un-
der the PROGRAM key, the display will be the first
display prior to the SYS 1 info. If the microprocessor is
programmed for CURRENT FEEDBACK NONE, no
current display 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 first, fol-
lowed 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 first pressing
the HISTORY key and then repeatedly pressing the ↓
(DOWN) arrow key until you scroll past the first his-
tory buffer choice.
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 again, the
software version will appear.
C O N T R O L C. M X X. Z Z. Y Y
I / O C.
M
X
X.
1
8.
Y Y
