Fault Signalling; Etting The Values On The - Riello DVT 50 User Manual

S
YSTEM DESCRIPTION
F
AULT SIGNALLING
All Dialog Vision models are provided with a self-check system that can indicate any faults or failures on the
display. The symbols are shown below, together with a description and the possible solutions to rectify the
problem.
Table 3: List of faults
Symbols in Part
A of the LCD
S

ETTING THE VALUES ON THE

The LCD has two parts, left (Part A) and right (Part B). The left side displays the following parameters: "Input
voltage", "Input frequency", "Voltage battery", "Capacity as a percentage of battery" and "Estimated back-up time
in minutes".
The parameters available on the right side are: "Output voltage", "Output frequency" and "Load as a percentage".
The displayed values can be set using the ON and SELECT keys.
The "SELECT" key is used to choose the field to be set, while the ON key is used to confirm the selection.
The first time the "SELECT" key is pressed (for 3 seconds, then the keys should be pressed for about 1 second),
the left part will start to flash. The second time this key is pressed the right part will start to flash, and if pressed
for a third time nothing will flash.
When a field is flashing press "ON" to confirm.
Press "SELECT" to choose the required value.
Press "ON" to confirm the selected value.
When the UPS is on, in both mains and battery mode, it will show the following default values respectively:
Description
The UPS has failed due to an
overload
The UPS has overheated
The UPS output has short-
circuited
Fan failure
Output voltage out of range
(inverter failure)
UPS internal error
F
RONT PANEL
Possible solution
Check the level on the display and reduce the load
1. Ensure that the ambient temperature is lower
than 40°C
2. Switch the UPS off and wait until it cools down
1. Disconnect all loads and ensure that there is
nothing short-circuiting the output
2. Ensure that the loads are not short-circuiting
internally
Contact the reseller to check or replace the fan
Contact the reseller
Contact the reseller
LCD
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