LED lights in communal area strobing

[SparkyAndGeorge]

Hi all,
Been called out to communal lights in a flat communal area. 3 out of the 9 LED lights are strobing roughly once a second. When the timelag switches are pressed the strobing stops and the lights illuminate as they should but when the timelag switch pops back out the strobing starts again. I measured the voltage and am getting
S/L - N = 60v/120v fluctuating
S/L - E = 60v/120v fluctuating
P/L - N = 230v
N - E = 0v
Any suggestions please? Many Thanks

 

[davesparks]

Capacitive coupling is the usual cause of this.

 

[SparkyAndGeorge]

Thanks Dave. What is the solution?

 

[Leesparkykent]

You could try a cap load or a few. I take it the switches are electronic rather than pneumatic?

 

[dmxtothemax]

put one only incandesant light on the circuit,
this usually fix's it.
must be incandesant, cannot be led or cfl.
The easiest way is to swap out one of the led bulbs.
Same fixture just put a small incandesant in there.

 

[SparkyAndGeorge]

Thanks guys.