MANUAL
EFU10000
4.0kVA INVERTER UNIT
Pag. 23
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10. TROUBLESHOOTING
The following instructions must be followed when appliance does not operate with engine
running.
POS.
RED LED
GREEN LED
YELLOW LED CONDITION
INSTRUCTION
4
Slow flashing
ON
ON
Overload Condition
Decrease the load
5
ON
OFF
ON
Overload Protection
Switch OFF inverter
power supply
Control the load
Decrease the load
6
Slow flashing-
ON
Slow flashing
Overtemperature
Condition
Decrease the load
Control the cooling
system
7
ON
OFF
Slow flashing
Overtemperature
Protection
Switch OFF inverter
power supply
Wait for temperature
decreasing
8
OFF
Slow flashing
OFF
Output Undervoltage
(see paragraph 11.5.7)
Control the load
Decrease thr load
9
ON
Slow flashing
ON
Output Undervoltage
(not Severe) Protection
Switch OFF inverter
power supply
Control the load
Decrease the load
10
ON
Slow flashing
OFF
Output Undervoltage
(Severe) Protection
Switch OFF inverter
power supply
Control the load
Decrease the load
11
Slow flashing
ON
Fast flashing
BUS Overvoltage
Condition (I
st
level)
Control the load
Decrease the load
12
ON
OFF
Fast flashing
BUS Overvoltage
Protection
Switch OFF inverter
power supply
Wait for bus capacitors
to be completely
discharge
13
ON
OFF
OFF
Inverter Failure
Control the load
Control the generator
14
ON
Fast flashing
Fast flashing
Brake Resistor
Protection
Switch OFF inverter
power supply
Wait for bus capacitors
to be completely
discharge
15
ON
ON
ON
Generator Behavior
Switch OFF inverter
power supply
Control for an applied
external voltage source
Control
generator
connection
and/or
behaviour
WARNING
When, after following the proper instruction, the problem persists, send
back the unit to KWG
