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26
LED display
Cause of the fault
Troubleshooting
K1
E1
T1
POWER
K2
E2
Fault
T
Fault
• Short circuit S43/L+ or S34/S44
►
Check wiring
K1
E1
T1
POWER
K2
E2
Fault
T
Fault
• Missing clock
• Wiring fault
• Connection A2/A3 reversed
• Short circuit S43/L-
►
Check wiring
K1
E1
T1
POWER
K2
E2
Fault
T
Fault
• Overvoltage
• Undervoltage
►
Check wiring
►
Check power supply
K1
E1
T1
POWER
K2
E2
Fault
T
Fault
• Overvoltage
• Undervoltage
►
Check wiring
►
Check power supply
K1
E1
T1
POWER
K2
E2
Fault
T
Faul
t
K1
E1
T1
POWER
K2
E2
Fault
T
Faul
t
• Undervoltage
►
Check wiring
►
Check power supply