102
462 Error detected when moni-
toring DC deceleration
1. Occurs once 1. Restart inverter
2. Monitoring of DC decelera-
tion faulty
2. Replace inverter
463 AC pole reserved 1. AC connection between
power module and filter PC
board established in incorrect
direction (L1 and L2 mixed up)
1. Check cabling
472 Fuse for solar module
ground faulty
1. Faulty fuse for solar module
ground
1. Replace fuse
2. Incorrect setting in basic ser-
vice menu
2. Set DC mode to "floating"
474 RCMU sensor fault 1. Quick irradiation change 1. Automatically corrected
2. Sensor faulty 2. Replace filter PC board
475 Insulation fault detected 1. Incorrect setting 1. Check ISO/GFDI setting
2. Grounding fault PV genera-
tor
2. Check PV generator
3. Measurement circuit on
power module defective
3. Replace DC PC board and
then, if necessary, AC PC
board
476 Internal power supply miss-
ing
1. Grid voltage too low 1. Check cabling
2. Grid test time is too low 2. Grid failure
3. Missing internal power sup-
ply
3. Replace AC PC board
4. Missing internal power sup-
ply
4. Replace filter PC board
480 Power module and display
software incompatible
1. Old power module/display
software
1. Software update
2. Old software 2. Reload setup
3. Incompatible hardware com-
bination
3. Check hardware compo-
nents
481 Recerbo has old software
version
1. Old Recerbo software 1. Software update
2. Old software 2. Reload setup
3. Incompatible hardware com-
bination
3. Check hardware compo-
nents
482 Inverter switched off during
commissioning
1. Startup process not suc-
cessful
1. Restart inverter
483 Set DC2 fixed voltage out-
side of the permitted MPP
range
1. Incorrectly set fixed voltage 1. Check settings
484–485 Error during data transfer 1. Communication problem
caused by temporary environ-
mental faults (grid, EMC, etc.)
1. Automatically corrected
2. Ribbon cable between filter
PC board and power module
faulty
2. Replace ribbon cable
3. Faulty AC guard on filter PC
board
3. Replace filter PC board
4. Faulty AC guard on power
module
4. Replace AC PC board
Code Description Behavior Remedy
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