02
02
AFDD troubleshooting
LED is OFF.
Measure voltage of
device.
Voltage is below
216V
or above
253V
Voltage between
216V
(-6%) and
253V
(+10%)
Check the power supply
voltage and/or connection
to the AFDD.
Voltage ok.
Replace the AFDD.
Hager LTD, Hortonwood 50, Telford-TF1 7FT, United Kingdom
Handle is ON.
Replace the AFDD.
Assumption:
Internal AFDD error
LED blinking YELLOW
Contact the Technical
support.
03
Standard electrical troubleshooting
Handle is OFF.
AFDD manually
tripped
LED blinking RED/GREEN
LED blinking RED/GREEN
Short-circuit
Overload
Do standard electrical
troubleshooting and check
the appearance of short-
circuit or overload.
or
Assumption:
Overvoltage
Check the electrical
installation and/or the
power supply.
LED steady YELLOW
Yellow flag absence
Yellow flag presence
1. Switch off load.
2. Do standard electrical
troubleshooting.
Assumption:
Residual current fault
Only for RCBO-AFDD
LED steady RED
Handle is ON or OFF.
