60
The power module will au-
tomatically attempt to con-
nect again and, if possible,
will resume feeding power
into the mains
401 Communication with
power module not pos-
sible
Some of the Class 4 service codes necessitate intervention by a FRONIUS-trained
service technician.
Code Designation Manifestation
Class 4
If a service code appears
frequently:
Notify FRONIUS-trained
service engineer
Remedy
The power module will au-
tomatically attempt to con-
nect again and, if possible,
will resume feeding power
into the mains
402 Communication with
EEPROM not possible
If a service code appears
frequently: Notify FRO-
NIUS-trained service
engineer
The power module will au-
tomatically attempt to con-
nect again and, if possible,
will resume feeding power
into the mains
403 EEPROM defective If a service code appears
frequently: Notify FRO-
NIUS-trained service
engineer
Power module discon-
nected from mains for safe-
ty reasons
406 AC temperature sensor
defective
If a service code appears
frequently: Notify FRO-
NIUS-trained service
engineer
2-pin plug inserted in wrong
socket
410 Service plug has not
been connected in its
original position
If a service code appears
frequently: Notify FRO-
NIUS-trained service
engineer
Power module discon-
nected from mains for safe-
ty reasons
407 DC temperature sensor
defective
If a service code appears
frequently: Notify FRO-
NIUS-trained service
engineer
Power module discon-
nected from mains for safe-
ty reasons
408 Feeding DC into the
mains
If a service code appears
frequently: Notify FRO-
NIUS-trained service
engineer
Power module not con-
nected to the mains
409 No +15 V supply for the
electronic control sys-
tem
If a service code appears
frequently: Notify FRO-
NIUS-trained service
engineer
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