AAON RSMV-HP, Technical Manual, Page: 16 / 32

RSMV-HP LCD SCREENS
RSMV-HP Technical Guide 16
Setpoint Status Screens & Alarms Screen
COILT SP
40
COIL TEMPERATURE SETPOINT SETTING
Valid range is 35 to 70 degrees. Default is 40 degrees.
Alarms Screens
If an alarm is present, the ALARM LED above the LCD display will
light up red and blink. The Alarms will display and scroll automatically
from the ALARMS screen when alarms are present.
ALARMS
NO ALARMS:
This will be shown if there are no current alarms.
NO SUCTION PRESSURE SENSOR (SUCT) DETECTED:
This alarm indicates the Suction Pressure Sensor is not detected by
the system. The system will shut down due to Unsafe Suction safety
and will retry after 5 minutes.
HIGH HEAD PRESSURE (HP) DETECTED:
This indicates a
High Head Pressure Alarm condition which is activated when the Head
Pressure rises above 550 PSIG. This will cause the condenser to go to
100%.
NO HEAD PRESSURE SENSOR (HEAD) DETECTED:
This
alarm indicates the Head Pressure Sensor is not detected by the sys-
tem. This will cause the condenser to go to 100%.
COIL TEMP A1 - D1, A2-D2, A3-D3, A4-D4 FAILURE:
This
alarm will occur if the coil temperature is not within operable range
(below -32F or above 310F). This could be the result of a bad sensor
or faulty wiring. This alarm will shut down the system. The system will
reset after 5 minutes if the sensor is detected.
COMPRESSOR (COMP) A1 FAILURE:
This alarm will occur if
the compressor fails to run 45 seconds after the relay is activated or if
the signal is lost after activation. This will cause an alarm and will shut
down the compressor (relay). The system will retry after 5 minutes.
COMPRESSOR (COMP) A2 FAILURE:
This alarm will occur if
the compressor fails to run 45 seconds after the relay is activated or if
the signal is lost after activation. This will cause an alarm and will shut
down the compressor (relay). The system will retry after 5 minutes.
LOW SUPERHEAT 1 - 4 (SH1 - SH4) DETECTED:
This alarm
will be activated when the Superheat is less than 4 degrees for 2
minutes during normal operation or for 4 minutes during the fi rst 10
minutes. The system will shut down and will retry after 5 minutes.
HIGH SUPERHEAT 1 - 4 (SH1 - SH4) WARNING:
If superheat
is above 25 degrees for 2 minutes, this alarm will appear on the mod-
ule only. It will not be sent to the main controller to display on Prism 2.
HIGH SUPERHEAT 1 - 4 (SH1 - SH4) FAILURE:
If superheat
is above 30 degrees for 10 minutes, it will fail the compressors. It
will retry after 5 minutes. If it fails twice in 2 hours, it will lock out the
compressors.
HIGH SUPERHEAT LOCKOUT:
If the module fails on high super-
heat twice in 2 hours, it will lock out the compressors.
LOW SUCTION PRESSURE (SP) DETECTED:
This alarm will
occur if suction pressure falls below the low suction pressure setpoint
for 20 seconds. The system will try to protect by lowering compressor
modulation percentage.
LOW SUCTION PRESSURE FAILURE:
This alarm will occur if
suction pressure stays below the low suction pressure setpoint for 1
minute or falls below 40 psi for 5 seconds. This alarm will shut down
the system. The system will retry after 5 minutes.
EBUS SLAVE (SLV) TIMEOUT:
This alarm indicates that
communication has been lost between the RSMV and the Main
controller or other E-BUS modules that may be connected. This can
be the result of a bad cable, a missing cable, or the module not being
confi gured properly.
GLYCOL %
0%
GLYCOL SETPOINT
Valid range is 0-100 percent. Default is 0 percent.
LOW H20
37 DEG F
LOW H20 SETPOINT
Valid range is X-XX Deg F. Default is 37 Deg F.
DEFR INT
XX MIN
DEFROST INTERVAL TIME
Time before defrost is allowed to activate.
LOW SUCTION PRESSURE SETPOINT SETTING
Default is 95 PSI.
LOW SUCT
95 psi