J+J J3C Troubleshooting Manual page 4

LED LIT SOLIDLY BUT ACTUATOR DOESN'T WORK
REPORTED FAULT POSSIBLE REASON(S) POSSIBLE SOLUTIONS/ ADVICE
LED lit solid but Wiring issue
actuator not working
Signalling issue
Power supply issue
LED FLASHING AND ACTUATOR DOESN'T WORK
REPORTED FAULT POSSIBLE REASON(S) POSSIBLE SOLUTIONS/ ADVICE
LED Flashing Depends on sequence
and colour of flashes/
blinks
• Check wiring as above.
• Ensure that in on-off versions, a signal is not being sent to both 'live' pins (2 & 3) at the same time
• Ensure the command signal is continuous and not a pulse signal, the actuator will not respond well to any pulsed input command signal.
• Relay or switch is not compatible with the actuator. Typically residual voltage from solid state relays may cause this issue.
• Borderline power supply, sufficient to light LED but not to drive actuator
By far the 2 most common are:
• Actuator's internal electronic torque limiter has activated (see below for causes) See
• Actuator is in 'MANUAL' mode (see later in document for details)
①
See ②
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