Fronius Selectiva 4.0 Operating Instructions Manual page 53

Status codes in the event of an error in the secondary circuit
No. Cause / Remedy
(520) Secondary temperature sensor defective
(521) Secondary overtemperature
(522) Output fuse defective
(523) Secondary supply voltage out of tolerance
(524) Secondary reference voltage out of tolerance
(525) Current offset
(526) Current offset out of tolerance
(527) Power module overcurrent (primary)
(529) No secondary communication
(530) No primary communication
(531) Secondary EEPROM defective
(532) Microcontroller error
(537) Voltage measurement faulty
(570) Secondary relay cannot be switched
(571) ADC/SPI problem
Status codes in the event of an error in the control system
No. Cause / Remedy
(540) Configuration memory block missing/defective
(541) No secondary communication
(542) Secondary Init failed
(543) Program/memory error in the characteristic control
(544) Program/memory error in the characteristic control
(545) Primary Init failed
(546) Update failed
(547) Load/save settings failed
(548) Load/save curve settings failed
(549) Charge could not be continued after a power failure
(550) Time not set
(551) Hardware change detected
(552) Configuration memory block invalid
(553) Primary update failed
(554) Master-slave communication faulty
(555) Incorrect device software
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