Technical data

UPS MKD 1500 RT
Eliminating Errors
MKD series
64
8. Eliminating Errors
Only authorised professional staff are to perform work for eliminating er-
rors on the UPS system.
Error message
Possible cause
Remedy
No display and no
warning sound even
though the system is
connected to the
mains electricity
No input voltage
Check the mains socket and the sup-
ply cable.
Emergency supply
time shorter than the
rated value
Batteries not fully
charged or defective
Charge the batteries for at least
5 - 8 hours and then check their
status. If the problem persists, contact
your dealer.
Fan failure
Alarm code: 84
Fan fault
Check whether the fan is running.
Battery overvoltage
Alarm code: 16
The battery is over-
charged.
Interrupt the automatic battery charg-
ing process.
Re-activate automatic charging once
the battery voltage and mains electric-
ity are normal.
Battery level low
Alarm code: 12
The battery voltage
is low.
If a warning signal sounds once a second,
the battery is almost flat.
Charging error
Alarm code: 15
The charger is
defective.
Contact your dealer.
High solar inverter
temperature
Alarm code: 86
The interior UPS
temperature is too
high.
Check the UPS ventilation and the
ambient temperature.
High ambient tem-
perature
Alarm code: 82
The ambient tem-
perature is too high.
Check the room ventilation.
Battery compartment
open
Alarm code: 11
The battery set is
not connected cor-
rectly.
Check whether the battery set is con-
nected to the UPS.
Check whether the battery disconnec-
tor is switched on.