I have a light that refuses to go on.
The light switch (wall type) is connected to a relay. Now the relay won't
"click". It used to work a couple of days ago. The relay has operating voltage of
24V which switches a 240V line (lights).
I would like to test (using a voltmeter) where I'm having problems. How do I
measure if 24V is going through the coil/magnet.
The relay box looks like this (wires go to points A,B,C,D):
A 24V b
When the switch is off volmeter shows 240V between C and D
When the switch is on volmeter shows 0V between C and D
How do I measure voltage in A and B?