Fault — the inverter cuts its output and the red LED stays solid until the fault is cleared.
Also applies to:Axpert MAX II TWIN 8KWAxpert MAX II TWIN 11KWAxpert MAX II TWIN 12KWAxpert MAX II Duplex 8KW+16
Over current — Fault code 51 shown on the display with the fault icon on: Over current.
Cause: Over current or surge.
Restart the unit, if the error happens again, please return to repair center.
Source: Voltronic manual, p.47
Also applies to:Axpert KING II TWIN 6KWAxpert KING II TWIN 6.2KWAxpert KING 3KWAxpert KING 5KW+1
OP over current
Cause: OP over current or surge.
If the battery is connected well, please return to repair center.
Source: Voltronic manual, p.36
Also applies to:Axpert MKS III TWIN 6KWAxpert MKS II 5KVAAxpert VM II 1.2KVAAxpert VM II 2.5KVA+17
Over current or surge — Fault code 51 shown on the display with the fault icon on: Over current or surge.
Cause: Over current or surge.
Restart the unit, if the error happens again, please return to repair center.
Source: Voltronic manual, p.35
Also applies to:InfiniSolar V II 2KWInfiniSolar V II 3KWInfiniSolar V II 5KWInfiniSolar V II 2P 6KW+3
Over current or surge — Fault code 51 shown on the display with the fault icon on: Over current or surge.
Cause: Over current or surge.
If the battery is connected well, please return to repair center.
Source: Voltronic manual, p.26
Over current or surge — Fault code 51 shown on the display with the fault icon on: Over current or surge.
Cause: Over current or surge.
Reduce PV serial amount.
Source: Voltronic manual, p.27
Transformer current over — Fault code 51 shown on the display with the fault icon on: Transformer current over.
Cause: Surge.
Source: Voltronic manual, p.52
Bat SCR Temp Over — Fault code 51 shown on the display with the fault icon on: Bat SCR Temp Over.
Cause: The temperature is too high inside.
Source: Voltronic manual, p.51
Price incl. VATAED 917
Price incl. VATAED 1,482
Price incl. VATAED 1,585
Price incl. VATAED 1,703
Price incl. VATAED 8,500
Price incl. VATAED 1,438
It depends on the model — 30 devices use code 51. On the Axpert MAX II TWIN it means: Over current. The card for each model on this page gives its exact meaning and fix.
51 is a fault code: the inverter cuts its output and the red LED stays solid until it is cleared.
Restart the unit, if the error happens again, please return to repair center. The exact steps for each affected model are listed on this page.
51 is in the "Fault" class on the Axpert MAX II TWIN: 29 of the 38 codes documented for it.
All Axpert MAX II TWIN codes All Axpert MAX II Duplex codes All Axpert MAX II codes All Axpert MAX TWIN codes All Axpert MAX E TWIN codes All Axpert MAX E Duplex codes All Axpert MAX codes All Axpert MKS IV TWIN codes All Axpert MKS IV codes All Axpert VM IV TWIN (VM4 TWIN) codes All Axpert WP TWIN codes All ESS-A510 codes
51 is in the "Fault" class on the Axpert KING II TWIN: 26 of the 33 codes documented for it.
All Axpert KING II TWIN codes All Axpert KING codes All Galleon One 5KL 48V codes
51 is in the "Fault" class on the Axpert MKS III TWIN: 28 of the 37 codes documented for it.
All Axpert MKS III TWIN codes All Axpert MKS II codes All Axpert VM II codes All Axpert VM II (PF1) codes All Axpert VM III codes All Axpert KS codes All Axpert V (PF1) codes All Axpert 3KP/5KP 24V codes All InfiniSolar V codes
51 is in the "Fault" class on the InfiniSolar V II: 29 of the 37 codes documented for it.
All InfiniSolar V II codes All InfiniSolar V II 6KW (Split Phase) codes All InfiniSolar V II WP codes
51 is in the "Fault" class on the InfiniSolar V II 1.5KW: 18 of the 24 codes documented for it.
51 is in the "Fault" class on the InfiniSolar 15KW: 27 of the 42 codes documented for it.
Compiled from official Voltronic user manuals. Always consult your device manual and a qualified technician before performing repairs.