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
Faul
t
• 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