Viconics VT7682S Installation Manual Manual do Utilizador descarregar pdf (Página 17)

17 | VT7682S Series-Installation Guide

TROUBLESHOOTING GUIDE

All models

Symptom

Possible Cause

Corrective Action

No display on the

Terminal

Equipment

Controller

Absent or incorrect

supply voltage

1. Check power supply voltage between C

& RC to be from 19-30 VAC

2. Check for tripped fuse or circuit breaker

Overloaded power

transformer

Verify that the transformer used is

powerful enough (enough VA’s) to supply

all controlled devices including the

Terminal Equipment Controller

Keyboard menu

does not access

all functions

Keyboard locked

Change configuration parameter

LOCKOUT to value “0” to access all levels

of the menu

Digital display

shows missing

digits or erratic

segments

Defective display

Replace Terminal Equipment Controller

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