PE wattstopper - 9/28/11

Xfmr shorted. Improper function at wattstopper.  Not responding to commands.  Erratic function.

Finding:

All interior switches are Wattstopper AS100 type.  Exterior lights are not.

AS100 switches  are programmed at circuit board and have a countdown routine to open.

Turning off [interrupting power] to relay with AS100 line voltage switch programmed as connected load results in immediate restoration of power.  AS100 switches require steady power.  They are the smart switch that does the routine.  They get a pulse, of any duration, and when the power comes back on, they start their countdown routine.

Countdown routine means you have five minutes until the lights go off to press the switch.

That means in event of power failure user will have to know to push the wall switch within 5 min.

One test I can do, when rooms are unoccupied, is to see if all the interior relays are programmed as AS100s.  I would do this by pulsing them and seeing if the power is immediately restored.

The program for this resides on the circuit board and is, in this case, programmed in by Delta.

There were burned up relays.

This happened because there was constant calling for closure.

Seems like the original fault was the goober of solder and another piece of metallic dust that came away.  Why did this just now act up was not determined.  The bent pin may have happened during the troubleshooting procedure.

Bent pin

Goober of solder

Overview of the variables in the fine arts lighting problem.