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www.tescom-ups.gr
USER MANUAL
DS 300H Series � 3/3 � 30 kVA � UPS CONTROLLED UPS
R20 INPUT CB OPEN
The input of the UPS is isolated from mains power with contactor ,this message will be shown with another
alarm always. Check the other alarm code.
R21 PFC STOP
Rectifier is stopped itself wait it must start again, another alarm code shows the reason of the rectifier stop.
Wait for 1 minute if alarm continues call service.
R22 POS CHG LIMIT
,
R23 NEG CHG LIMIT
This message is normal if the battery charge current is rached to limit value during battery charge.
R24 WAITING DC BUS
The DC BUS voltage of the UPS is not enough to startup wait 2 minutes if message continues call service.
R25 BATTERY FAILURE
At the last battery test one or more defected batteries found, call service.
R26 BATT TEMP SENSOR
Battery temperature sensor mulfunction, call service.
R27 BATT TEMP HIGH
If batteries are located at the outside of the UPS cabinet check battery ambient temperature if hot use air
cooling system. If batteries are internal check the UPS ambient temperature if normal call service.
L02 TH2 TEMP HIGH
,
L04 TH2 TEMP LOW
UPS TH2 cabinet inside temperature is out of tolerance check the followings:
-If UPS air inlets and outlets covred by dust clean
-If any material prevents air flow at UPS air inlets or outlets take the material
-If UPS ambient temperature is high then 45 C ,use air cooling system
L05 FAN MAINT
Maintenance due of the cooling fans of the UPS, call service.
L06 BATTERY MAINT
Maintenance due of the UPS batteries, call service.
L08 TH1 SENSOR FAIL
,
L09 TH2 SENSOR FAIL
TH1 or TH2 temperature measurement sensors are defected, call service.
L10 ENTER FAULT RESET
Call service
L11 BATT CB OPEN
The battery switch of the UPS is OFF, in this case UPS runs normally but if mains failure alarm occures the
output voltage of the UPS shutdown. Please turn ON the battery switch.
L12 GENERAL MAINT
Maintenance due of the general maintenance, call service.
L13 PFC CAN COMM ERR
Call service.
L14 INV CAN COMM ERR
Call service.
A00 INV FAULT = XXXX
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A01 O/P OVERCURRENT
Check the new load which are connected to UPS nowadays the total load power maybe exceeds maximum
power of the UPS. Otherwise call service.
A02 OVERTEMP SHUT
Inverter modüle heatsink temperature is out of tolerance check the followings:
-If UPS air inlets and outlets covred by dust clean
-If any material prevents air flow at UPS air inlets or outlets take the material
-If UPS ambient temperature is high then 45 C, use air cooling system
A03 BATT HIGH
DC BUS voltage or battery voltage of the UPS is high, if inductive load is used this event sometimes
occures if alarm continues call service.
A04 OUTPUT V.LOW
The output voltage of the inverter is low call service
A05 OUTPUT V.HIGH
The output voltage of the inverter is high call service
A06 OVERLOAD SHUT
The total load which is connected to the UPS is exceeded 100% capacity of the UPS if message continues
call service they will check UPS, but probably you need higher power range UPS.
Note: Some load inrush curents causes overload event then current is normal.
A07 SHORT CIRCUIT
There is short circuit at the output of the UPS check installation and loads.
A08 ON MAINTENANCE
The maintenance by-pas switch of the UPS is ON <1>position, there is a lock on this switch which prevents
unauthorized personnel use.
A09 MANUAL BYPASS
Load is transferred to by-pass from UPS command menu, transfer the load to the inverter.
A10 BATTERY LOW SHUT
The DC BUS or battery voltage of the UPS is low. If the mains is OKEY call service.
If the there is nomains voltage wait until mains OKEY UPS will start automatically.
A11 REPO STOP
External repo button pressed, to restart turn off and on the UPS
A12 DC BALANCE BAD
Call service
A13 PEAK CURRENT
Very high curent measured at the UPS output, check loads
A14 INV NOT START
Call service
A17 BYPASS FAILURE
,
A18 BYPASS VOLT
,
A19 BYP FREQ.TOLER
The input of the UPS or by-pass input of the UPS voltage or frequency is out of tolerance ,wait until the
voltage is normal if message continues long time check input fuses ,switches etc. at the distrubution panel.
A20 OVERLOAD
UPS is currently running but the load percentage exceede 100% capacity of the UPS ,if this situation
continues inverter will stop after a delay.Check the loads at the UPS output.
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