Intermatic K4321 photo control - lights do not go off

[Ajmeister]

I have a Intermatic K4321 photo control that controls one outside light. The light never goes off. I don't see anything blocking the sensor within few feet. But there are some plants/bushes 5 to 6 feet away from it. I do see something that appears to be a little bit of condensation type of thing and the it looks a bit "foggy". Could the sensor be bad? Any way to test it using a multimeter?

Not sure if this thing ever worked - we just moved into this property few months ago and it has been like this since the beginning.

 

[Aceman]

If the photocell controls the light and the light is stuck on, the photocell is bad. You don't need to meter anything.

Of course, I've had a customer paint over a photocell before too and then call because the lights were stuck on.

 

[PRH44]

Be sure it is wired correctly they do not like the hot and the fixture lead to be swaped

 

[Norcal]

It may have failed, replacing it may be the only thing you can do.