Rittal PMC12 Guide d'installation télécharger pdf (Page 20)

Maintenance Guide

UPS-Manual 20

EN

5.5.2. Inverter/Internal Over temperature

If the UPS experiences internal over-tempera-

ture when Utility is normal, it will switch to by-

pass loop. The UPS will switch back to inverter

mode when the over-temperature situation is

eliminated. If over temperature occurs when

Utility is abnormal, the buzzer will beep con-

tinuously and the Fault LED will light up. The

UPS will cut off supply to the loads.

5.5.3. Inverter Over-current and Inverter

Output Voltage Out of tolerance

If the UPS inverter delivers over-current and

out-of-tolerance voltage to its outlets, the UPS

is out of order. The UPS will switch to bypass

loop when Utility is normal. The Utility LED

and Fault LED will light up.

If these two fault conditions occur when Utility

is abnormal, the UPS will cut off the supply to

its outlets and the Fault LED will light up.

6. Maintenance Guide

6.1. Trouble Shooting

When the UPS becomes faulty or malfunctions

during operation, you may check the fault lists

below for respective solutions. Should the

problem persists, please contact your local

dealer for assistance.

Situation Check Items Solution

UPS Fault LED

Read the error

code from the LCD

display.

1.Er05, Er25,

2. Overload

3.Er11 (UPS Over

Temperature)

4.Site

wiring/Ground

fault

5.Er14 (Fans out

of order)

6.Other error

codes

1. Check battery

connection if is

properly done.

Measure Battery

voltage to ensure

batteries are

charged or healthy.

Recharge batteries

for 8 hours if

necessary. Simulate

Utility outage to

verify if UPS is able

to provide DC back-

up. Otherwise

consult your local

dealer right away.

2. Disconnect some

non critical loads

form the UPS output

until overload

ceases. Check if

there is any short

circuit between

cables due to broken

cable insulator.

Replace the cables

in necessary.

3. Remove any objects

obstructing the

ventilation louvers.

Verify if the cooling

fans are working

properly. Contacts

your local dealer to

replace the fans if

necessary.

4. Verify if the “L” & “N”

phase of the Utility

AC source has been

wrongly wired or if

the Ground-Neutral

Voltage exceeded

the limits

5. Verify if the

ventilating fans are

functioning properly.

Do not attempt to

replace the fans by

yourself. Contact

your local dealer for

replacement.

6. Consult your local

dealer for

assistance.

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