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LED LIT SOLIDLY BUT ACTUATOR DOESN’T WORK

REPORTED FAULT

POSSIBLE REASON(S)

POSSIBLE SOLUTIONS/ ADVICE

LED lit solid but

actuator not working

Wiring issue

• 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

Signalling issue

• 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.

Power supply issue

• Borderline power supply, sufficient to light LED but not to drive actuator

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

By far the 2 most common are:

• Actuator’s internal electronic torque limiter has activated (see below for causes) See ①

• Actuator is in ‘MANUAL’ mode (see later in document for details) See ②

Questions and Answers:

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J+J J3C Specifications

General