Viconics VT7600A - Page 11

11 | PIR Ready VT76x7 Series-Installation Guide
Sequence of auto-scroll status display:
ROOM
TEMP & RH
CLOCK
STATUS
SYSTEM
MODE
SCHEDULE
STATUS
OUTDOOR
TEMPERATURE
ALARMS
x.x °C
or °F
XX % RH
Monday
12:00
AM
Sys mode
auto
Occupied
Outdoor
x.x °C or°F
Service
Sys mode
off
Occupied
hold
Frost
ON
Sys mode
heat
Unoccup
SetClock
Sys mode
cool
Filter
Sys mode
emergency
Fan lock
Outdoor air temperature
 Outdoor air temperature display is only enabled when outdoor air temperature sensor
is connected.
 A maximum range status display of 50 °C ( 122 °F ) indicates a shorted sensor.
Associated functions, such as mode lockouts and economizer function are
automatically disabled.
 A minimum range status -40 °C ( -40 °F ) is not displayed and indicates a opened
sensor or a sensor not connected. Associated functions, such as mode lockouts are
automatically disabled.
Alarms
 If alarms are detected, they will automatically be displayed at the end of the status
display scroll.
 During an alarm message display, the back lit screen will light up at the same time as
the message and shut off during the rest of the status display.
 Two alarms maximum can appear at any given time.
 The priority for the alarms is as follows:
Frost ON
Indicates that the heating is energized by the low limit frost protection room
temperature setpoint 5.6 °C ( 42 °F )
SetClock
Indicates that the clock needs to be reset. There has been a power failure
which has lasted longer than 6 hours
Service
Indicates that there is a service alarm as per one of the configurable digital
input ( DI1 or DI2 )
Filter
Indicates that the filters are dirty as per one of the configurable digital input (
DI1 or DI2 )
Fan lock
Indicates that the heating and cooling action are locked out due to a defective
fan operation