18
RSMD2R Technical Guide
LCD SCREENS
Alarms Screens
Alarms Screen
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.
The alarms are as follows:
NO ALARMS:
This will be shown if there are no current alarms.
EBUS SLAVE (SLV) TIMEOUT:
This alarm indicates that
communication has been lost between the RSMD2R 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 configured properly.
NO SUCTION PRESSURE SENSOR 1 (SUCT1) DETECTED:
This alarm indicates the Suction Pressure Sensor 1 is not detected
by the system. There is no compressor failure from this alarm.
The failure will be unsafe suction pressure.
NO SUCTION PRESSURE SENSOR 2 (SUCT2) DETECTED:
This alarm indicates the Suction Pressure Sensor 2 is not detected
by the system. There is no compressor failure from this alarm.
The failure will be unsafe suction pressure.
NO HEAD PRESSURE SENSOR 1 (HEAD1) DETECTED:
This
alarm indicates the Head Pressure Sensor 1 is not detected by the
system. This will cause the condenser fan/valve to go to 100%.
NO HEAD PRESSURE SENSOR 2 (HEAD2) DETECTED:
This
alarm indicates the Head Pressure Sensor 2 is not detected by the
system. This will cause the condenser fan/valve to go to 100%.
HIGH HEAD PRESSURE 1 (HP1) DETECTED:
This indicates
a High Head Pressure Alarm condition which is activated when
the Head Pressure 1 rises above 550 PSIG. This will cause the
condenser to go to 100%.
HIGH HEAD PRESSURE 2 (HP2) DETECTED:
This indicates
a High Head Pressure Alarm condition which is activated when
the Head Pressure 2 rises above 550 PSIG. This will cause the
condenser to go to 100%.
LOW SUCTION PRESSURE 1 (SP1) FAILURE:
This alarm will
occur if Suction Pressure 1 stays below the low suction pressure
setpoint for one minute or falls below 40 psi for five seconds.
This alarm will shut down the system. Power must be cycled to
clear the alarm.
LOW SUCTION PRESSURE 2 (SP2) FAILURE:
This alarm will
occur if Suction Pressure 2 stays below the low suction pressure
setpoint for one minute or falls below 40 psi for five seconds.
This alarm will shut down the system. Power must be cycled to
clear the alarm.
LOW SUCTION PRESSURE 1 (SP1) DETECTED:
This alarm
will occur if Suction Pressure 1 falls below the low suction
pressure setpoint for 20 seconds. The system will try to protect
by lowering compressor modulation percentage.
LOW SUCTION PRESSURE 2 (SP2) DETECTED:
This alarm
will occur if Suction Pressure 2 falls below the low suction
pressure setpoint for 20 seconds. The system will try to protect
by lowering compressor modulation percentage.
COMPRESSOR (COMP1) 1 FAULT:
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 five minutes.
COMPRESSOR (COMP) 2 FAULT:
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 five minutes.
COMPRESSOR (COMP1) 1 BAD TEMPERATURE:
This alarm
will occur if the Discharge Temp Sensor 1 measures less than
-40ºF or more than 356ºF. This will cause an alarm and will
shut down the compressor (relay). The system will retry after
five minutes.
COMPRESSOR (COMP2) 2 BAD TEMPERATURE:
This alarm
will occur if the Discharge Temp Sensor 2 measures less than
-40ºF or more than 356ºF. This will cause an alarm and will
shut down the compressor (relay). The system will retry after
five minutes.
COMPRESSOR (COMP) 1 CUTOFF:
This alarm will occur if
the Discharge Temp Sensor 1 measures more than 265ºF. This
will cause an alarm and will shut down the compressor (relay).
The system will can be restarted after 30 minutes.
COMPRESSOR (COMP) 2 CUTOFF:
This alarm will occur if
the Discharge Temp Sensor 2 measures more than 265ºF. This
will cause an alarm and will shut down the compressor (relay).
The system will can be restarted after 30 minutes.
ALARMS
Summary of Contents for RSMD2R
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