Danfoss FLX 17 Pro, Installation Manual, Page: 34 / 49

ID Status
message Description Action DNO Hotline PV
34–37 Residual Current Monitoring Unit
(RCMU) has measured an
excessive current.
Turn both DC and AC off and wait until the display turns
off. Then turn on DC and AC and observe if the event
reoccurs. If the event reoccurs, call the installer.
Installer: Visual inspection of all PV cables and modules.
- x -
40 AC grid not
OK
The AC grid has been out of
range for more than 10 minutes
(frequency and/or voltage).
Call the installer and inform about Frequency, SW version
and Grid code setting
Installer: Check the AC installation.
x - -
41–43 The inverter has detected that
grid voltage was below a certain
level.
If this event is reported several times each day, contact the
installer.
Installer: Perform on-site grid analysis.
47 PLA below
threshold
The inverter disconnects from
grid if PLA is below 3% of
nominal power.
Contact the DNO and obtain status on active power
reduction (PLA).
x - -
48–53 Grid
frequency
too low or
too high
Call the installer and inform about the grid frequency.
Check the AC installation.
x - -
54–56 DC grid current too high (stage
2).
For occurrence several times daily, contact installer.
Installer: Perform on-site grid analysis.
x - -
246 A grid event was detected and
inverter was stopped by the
redundant safety circuit.
A grid event was detected and inverter was stopped by the
redundant safety circuit. Check the event log. If the majority
of entries are of type 246, call the service department.
Otherwise wait 24 hours and check again.
- x -
Table 4.2 Grid-related Events
PV-related Events
ID Status
message Description Action DNO Hotline PV
100-102 PV negative Input current is negative, polarity
incorrect.
Call the installer.
Installer: Check polarity, if correct, call service.
- - x
103-105 PV current is
too high/
waiting.
Too many PV modules connected in
parallel. Should only appear on newly
installed systems.
Call the installer.
Installer: Check no. of strings in parallel and
current ratings. Has the current limit been
exceeded? Has the inverter derated on PV
current? Reconnect strings in parallel, possibly
install a second inverter.
- x x
112-114 PV config fault Call the installer.
Installer: Call service.
- - x
115 PV ISO too low The resistance between ground and
PV is too low for the inverter to start
up. This will force the inverter to make
a new measurement after 10 minutes
have passed.
Make a visual inspection of all PV cables and
modules for correct installation according to
the installation guide. The event could indicate
that the PE connection is missing.
- x x
116-118 PV wrong polarity Call the installer.
Installer: Call service.
- x x
121-123,
125
PV ISO low PV1, PV2, PV3, multiple
(related to 115)
Call the installer.
Installer: Call service.
- x x
258 PV voltage too
high/waiting
PV voltage is too high. Check that installation and layout correspond
to recommendations in the manuals.
- x x
Table 4.3 PV-related Events
Service
L00410568-02_02 / Rev. date: 2013-12-10 31
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