Alarms; General Alarms - valent VPR Series Controls Instruction Operation & Maintenance

Alarms

Alarms are displayed on the Alarms screen of
the LCD POINTS menu and on the Alarms tab of
the UMT and Web UI.
Alarms are listed here by the Web UI name. The
LCD name
(IN CAPITALS)
listed underneath.
Web UI Name
LCD NAME, UMT Name
Alarm Status
ALARM STATUS, Alarm Status
Indicates whether or not an alarm is present in
the unit.

General Alarms

General alarms are non-critical alarms that
automatically reset when conditions return to
normal.
Clogged Air Filter
FILTERS, Clogged Air Filter
If the filter differential pressure switch contact is
closed, which means there is little airflow
through the filter, this alarm is displayed.
CO2 Sensor
CO2 SENSOR, CO2 Sensor
If a C02 sensor is installed and it shows a value
of less than 100 ppm for more than 2 minutes,
this alarm is displayed.
Exhaust Fan Fail
EXHAUST FAN, Exhaust Fan
If the exhaust fan output from the controller does
not match the exhaust fan status (actual exhaust
fan output) within a 30-second time period, this
alarm is displayed.
Exhaust Temp Sensor
EXHAUST TEMP, Exhaust Temperature Sensor
If an exhaust temperature sensor is installed, the
unit will monitor the value being read from the
sensor and display an alarm if the sensor is
shorted (300°F) or disconnected (-13°F) for
duration of 2 minutes.
Heat Wheel Fail
HW ROTATION, Heat Wheel Rotation
If there is a call for the heat wheel to rotate but
Valent Controls IOM
and the UMT name are
the sensor determines that it is not rotating, the
unit will display this alarm.
HPC_LPC_A
HPC_LPC_A,
High Pressure/Low Pressure Cutout Circuit A
If the unit senses an open contact on either the
high pressure or low pressure switch on
compressor circuit A, this alarm is displayed. If
the point Shutdown Unit During High/Low
Pressure Trip is set to Yes, the unit will go into
shutdown mode for this alarm.
HPC_LPC_B
HPC_LPC_B,
High Pressure/Low Pressure Cutout Circuit B
If the unit senses an open contact on either the
high pressure or low pressure switch on
compressor circuit B, this alarm is displayed. If
the point Shutdown Unit During High/Low
Pressure Trip is set to Yes, the unit will go into
shutdown mode for this alarm.
Mixed Air Temp Sensor
MIXED TEMP SEN, Mixed Air Temperature Sensor
If a mixed air temperature sensor is installed, the
unit will monitor the value being read from it and
display an alarm if the sensor is shorted (300°F)
or disconnected (-13°F) for a duration of 2
minutes.
OA Humidity Sensor
OA HUMIDITY SEN, Outdoor Relative Humidity Sensor
If the outdoor air humidity reading is less than
5%, this alarm is displayed.
OA Temp Sensor
OA TEMP, Outdoor Air Temperature Sensor
If the outdoor air temperature sensor reading is
greater than 300°F over a 2 minute time period,
this alarm is displayed.
Refrigerant A Sensor
REF PRESSURE A, Refrigerant Pressure Transducer A
If the pressure transducer reading on circuit A is
less than 25 psi or greater than 650 psi over a
duration of 30 seconds, this alarm is displayed.
Refrigerant B Sensor
REF PRESSURE B, Refrigerant Pressure Transducer B
If the pressure transducer reading on circuit B is
less than 25 psi or greater than 650 psi over a
duration of 30 seconds, this alarm is displayed.
54 IOM-C1-0616
Part Number 474626