DC/AC Inverter
INV222 & INV211
User Manual
Page 14 (20)
©2014. ELTEK DEUTSCHLAND GmbH.
Eltek_UM_INV222_and_INV211_E_R2.0.doc
7. Trouble shooting
The following table shows all possible combinations of LED signals at the inverter unit.
The LED symbols mean:
Grey = LED off
Green or red = LED permanently on
Green or red with rays = LED is flashing
LED signal
Possible reason
Corrective action
1. No DC input voltage
2. Internal fault on circuitry
1. - Check input DC voltage
- Check incoming distribution fuses
- Check mounting position of the module
2. Exchange the unit
Inverter was remotely switched off via
CAN-Bus
Check the STS controller for the reason of
the switch-off command
DC input voltage low or high
Check DC input voltage level
Normal operation mode
Device switched off due to error
1. Restart the unit by switching on the input
DC fuse
2. If the fault remains, exchange the unit
Output voltage low
Internal fault in circuitry; exchange the unit
Active Error Warning
The following four errors are indicated:
1. Overload or short circuit
2. Fan fault
3. Over temperature
4. Output voltage high
The module automatically switches off with time
delay. Active errors are indicated with the follow-
ing flashing patterns of the red LED:
Active error
Flashing pattern
1. Overload or short circuit
1. Reduce the load to nominal value (see section
7) or check the load circuitry for short circuit
2. Fan fault
2. Exchange the unit or the internal fan
(service personnel only)
3. Over temperature
3. Check all air ventilations; remove dirt and dust;
check the environment temperature
(see the values at
section 8
)
4. Output voltage high
4. Internal fault in circuitry; exchange the unit
If the unit still does not work even though all checks have been done, contact your sales agent or the service de-
partment of ELTEK DEUTSCHLAND GmbH.