Fronius Primo 3.0-1 Service Manual page 95

Code Description
406 Faulty temperature sensor
in DC semiconductor mod-
ule
407 Faulty temperature sensor
on power stage set
408 Unacceptably high DC
braking detected on the in-
verter
412 Set fixed voltage is outside
the permitted MPP range
415 Enable signal: option cards
activated
416 - 425 No communication possible
between power stage set
and Recerbo
426 Intermediate circuit charg-
ing takes too long
427 Power stage set not ready
for too long (timeout)
431 Power stage set is in boot
mode
432 Permanent fault in power
stage set management
Behaviour
1. Faulty temperature sensor in
semiconductor module
2. Faulty power stage set cir-
cuit
1. Faulty temperature sensor
on power stage set
2. Faulty power stage set cir-
cuit
1. Asynchronous AC grid
2. Faulty power stage set
1. Fixed voltage has been set
too high or too low
1. Option card does not output
an enable signal for feeding
energy into the grid
1. Occurs once - PSP commu-
nication fault
2. Unknown option card block-
ing the inverter
3. Check ribbon cable between
filter PC board and power
stage set
4. Faulty Recerbo
5. Faulty filter PC board
6. Faulty power stage set
1. DC voltage too weak
2. DC choke does not contact
cleanly
3. Faulty DC booster
1. Software fault
2. Measurement fault on power
stage set
1. Power stage set is being au-
tomatically programmed
2. Power stage set cannot be
automatically programmed
3. Faulty filter PC board
4. Faulty Recerbo
5. Faulty power stage set
1. Power stage set could not
communicate with Recerbo
2. Faulty power stage set
3. Faulty Recerbo
Remedy
1. Replace DC PC board
2. Replace DC PC board
1. Replace AC PC board
2. Replace AC PC board
1. Check AC grid
2. Replace AC PC board
1. Check adjustments in Ser-
vice menu
1. Automatic correction, option
card has stopped the inverter
1. Automatic correction
2. Software update
3. Replace ribbon cable
4. Replace Recerbo
5. Replace filter PC board
6. Replace AC PC board
1. Restart inverter or check wir-
ing
2. Check DC choke wiring
3. Replace DC PC board; re-
place AC PC board if neces-
sary
1. Software update
2. Replace AC PC board
1. Automatic correction
2. Software update
3. Replace filter PC board
4. Replace Recerbo
5. Replace AC PC board
1. Restart inverter or perform
software update
2. Replace AC PC board
3. Replace Recerbo
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