Specifications

66
JOHNSON CONTROLS
Form 201.28-NM1.EN.PED/CE (0211)
MICROPANEL
SYSTEM DATA KEYS 1 THROUGH 4
General
The data keys provide the user with many displays of
individual system temperatures, pressures, and other
operating data. These keys have multiple displays,
which can be seen by repeatedly pressing the SYSTEM
DATA or the ▲ or ▼ (Arrow) keys. An explanation of
each key and its messages is provided below.
System 1 Data Key Operation
The SYSTEM 1 DATA key provides the user with access
to System 1 operating parameters. The following is a list
of the data in the order in which it appears.
The first key press of the SYSTEM X DATA key displays
all of the measured system pressures (oil and discharge).
SYS 1 PRESSURES OIL = XXXX PSIG
DISCHARGE = XXXX PSIG
The second key press of the SYSTEM DATA key or the
▼ (DOWN ARROW) key displays system suction and
condenser liquid pressure.
SYS 1 PRESSURES SUCTION = XXXX PSIG
CONDENSER LIQUID = XXXX PSIG
The next key press displays system eductor and discharge
temperatures.
SYS 1 TEMPERATURES EDUCTOR = XXX.X °F
DISCHARGE = XXX.X °F
The next key press displays system condenser liquid
temperature, liquid line subcooling and saturated
discharge temperature on the liquid line.
SYS 1 CONDENSER LIQUID TEMP = XXX.X °F
SUBCOOLING= XXX.X SAT TEMP = XXX.X °F
The next key press displays discharge temperature,
discharge superheat and saturated discharge pressure at
the compressor.
SYS 1 DISCHARGE TEMP = XXX.X °F
SUPERHEAT = XXX.X SAT TEMP = XXX.X °F
The next key press displays the System 1 motor thermistor
temperatures.
SYS 1 MOTOR TEMPS T1 = XXX.X °F
T2 = XXX.X T3 = XXX.X °F
If any motor temp sensor is being ignored,
(selectable under Unit Set-up Mode), that
sensor’s value will be displayed as XXXXX.
The next key press displays the compressor speed in % (0
to100%) and the compressor heater status (ON or OFF).
SYS 1 COMPRESSOR SPEED = XXX.X %
HEATER = OFF
The next key press indicates the flash tank level and the
economizer valve % open.
SYS 1 FLASH TANK LEVEL = XXXX
ECONOMIZER VALVE = XXX.X %
The next key press displays the condenser liquid line
subcooling and the drain valve position.
SYS 1 CONDENSER SUBCOOLING = XXX.X °F
CONDENSER DRAIN VALVE = XXX.X %
The next key press indicates the number of condenser
fans steps that are enabled (1 to 4), if the fans are not
operating on a VSD.
SYS 1 CONDENSER FANS ON = 0
If the fans are controlled by an optional VSD, the display
will indicate fan speed signal control voltage to the VSD
and the fan speed (0 to 100%).
SYS 1 CONDENSER FANS ON = 0
VSD FAN SPEED XX.X V = XXX %
The next key press will indicate the state of the optional
VI solenoids where XXX indicates ON or OFF.
SYS 1 VI STEP SOLENOID 1 = XXX
VI STEP SOLENOID 2 = XXX