Viconics VT7600F Installation Manual - Manual (Page 10)

10 | PIR Ready VT7600 Series-Installation Guide
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 and
economizer function 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:
Sequence of manual-scroll status display:
Manual scroll of each menu item is achieved by pressing the Yes (scroll) key repetitively. The
last item viewed will be shown on the display for 30 seconds before returning to automatic
scrolling. Temperature is automatically updated when scrolling is held.
Clock Status
System
Mode
Schedule
Status
Outdoor
Temperature
Alarms
(if detected)
Monday Sys Mode Occupied Outdoor Service
12:00 AM Off xx.x °C or °F DAS Alrm
Sys Mode Unoccupied SetClock
Auto Filter
Sys Mode
Cool
Override Fan lock
Frost ON
Sys Mode
Heat
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
DAS
Alarm
Indicates that the discharge air temperature is either too low or too high.