71VCCX-IP Controller Technical Guide
APPENDIX B: LCD SCREENS
Screen Descriptions
Alarms Screens
If no alarms are present, the Alarms screen displays No Alarms. If an alarm is present, the ALARM LED above the LCD display lights
up red and blinks. The alarms display and scroll automatically from the ALARMS screen when alarms are present. Press <ENTER> to
scroll through the screens.
ALARMS SCREENS
Screen Text Description Screen Text Description
ALARMS Alarms Status screens HI SAT
ALARM
High supply temperature cuto alarm
NO
ALARMS
This is shown if there are no current alarms. LO SAT
ALARM
Low supply temperature cuto alarm
SAT
SENSOR
Supply Air Temperature Sensor failure alarm CONTROL
TEMP HI
High control temperature failure
RAT
SENSOR
Return Air Temperature Sensor failure alarm CONTROL
TEMP LO
Low control temperature failure
OAT
SENSOR
Outdoor Air Temperature Sensor failure alarm PRE_HEAT
ALARM
Preheat-X module alarm
SPC
SENSOR
Space Temperature Sensor failure alarm SUMP
ALARM
Sump drain alarm
CO2
SENSOR
CO
2
Sensor failure alarm REFRIG #
MISSING
The indicated refrigeration module is missing where #
can indicate 1-6.
BLDG PR.
ALARM
Building Pressure Sensor failure alarm PRE-HEAT
MISSING
PREHEAT board missing alarm
OA CFM
SENSOR
Outdoor air airow alarm REHEAT
MISSING
Reheat board missing alarm
EX CFM
SENSOR
Exhaust air airow alarm MODGAS
MISSING
MODGAS board missing alarm
SA CFM
SENSOR
Supply air airow alarm EM1
MISSING
Missing Expansion Module alarm
RA CFM
SENSOR
Return air airow alarm 12 RELAY
MISSING
Missing E-BUS 12 Relay Module alarm
MAT
SENSOR
Mixed Air Temperature Sensor failure alarm SUBCOOL1
MISSING
Missing Subcool module #1 alarm
COOLING
FAILURE
Mechanical cooling failure alarm SUBCOOL2
MISSING
Missing Subcool module #2 alarm
HEATING
FAILURE
Mechanical heating failure alarm FAC1
MISSING
Missing Fan Array Controller #1 alarm
FAN POF
FAILURE
Proof of ow interlock alarm FAC2
MISSING
Missing Fan Array Controller #2 alarm
DIRTY
FILTER
Dirty lter alarm MODULE #
ALARM
Refrigerant Module # operating alarm where # can
indicate 1-6
EMERG
SHUTDOWN
Emergency shutdown alarm UNKNOWN
ALARM
This screen should never display. But if it does, it
means the controller doesn’t know what the alarm is.
RELAY
RUNTIME
Relay run time exceeded alarm
ECONO
FAILURE
Title 24 Economizer alarms
RET FAN
FAILURE
Return/Exhaust fan proving alarm
DIR FIRE
ALARM
Direct re heat alarm
FAC
ALARM
Fan Array Controller alarm
Table 30: Alarms Screens