Dead circuit and breaker test switch does nothing

[dave82]

Hi,

The circuit that suppies our mains smoke detectors isn't working.

The circuit breaker test switch does nothing. My question is does this switch stop working if there is a break in the circut or does this mean the cirtuit breaker is dead or not getting any power from the consumer unit.

Cheers

Dave

[Moss5]

The 'Test' button only works when power is supplied to the inlet side of the switch.
Use a multimeter to verify.

[baldelectrician]

What make is it?

The ones I come across that usually fail are Proteus or Chint / CDG.

The item does have to be powered for the test button to work

If it isn't working then it's a saftey issue and should be addressed.

[dave82]

It is Wylex. I have left it switched off for now till I can get a spark to swap it out.

[baldelectrician]

If it's Wylex you need to know about the product recall.

If it was installed 2009-2010 you need to read this;




That's one reason I don't use Wylex.