Viconics VT7682S Application Guide - Manual (Page 6)

5
The Wireless Central Manager displays the zone MAC address of the device which contains the alarm. The
following are alarms which can be displayed by the controllers:
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.
Filter Indicates that the filters are dirty as per one of the configurable digital input.
Fan lock Indicates that the heating and cooling action are locked out due to a defective fan operation.
Window
Indicates that the outside window or door is opened and that the terminal equipment controller has cancelled any
cooling or heating action.
Discharg Indicates that the discharge temperature is beyond maximum permissible value.
Low Batt
Indicates that one of the attached wireless switching devices (door or window contact) have a low battery
condition.
FreshAir Indicates that the fresh air measurement is not within range.
CO2 Indicates that the CO2 level is beyond the maximum permissible value.

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:

First zon e in, second zone in…subsequent zones in alarm will only display when the first one(s) are out.
 The range of zones that can be in alarm is 1 to 253.
1.7. 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 an opened sensor or a sensor not connected.
Associated functions, such as mode lockouts and economizer function are automatically disabled.
Typical Application