"Chip C" wrote in message
oups.com...
T.B. wrote:
i have a window ac that i want to turn on at a certain time to cool
my
apartment before I get home from work, but can't get it to work with
the
digital time I bought from home depot. it doesn't turn on the unit
when the
timer turns on.

how can i accomplish this?

thanks in advance,
TB

Do an experiment: set the timer aside and simply plug in the a/c to the
wall. Does it come on? If not, either the controls aren't set
correctly, or the unit is one that requires a button to be pushed
*after* power is applied. If it's the latter, I think you're out of
luck.

this is a unit that require me to push a power button after it is plugged
in. it has a digital front panel interface.

If the unit comes on when you plug it in, but *not* with the timer,
then I'd guess the timer is insufficient to the load of the a/c. Check
the amps or watts ratings of the timer. A/C units draw a lot of power;
if there isn't a watts or amps rating marked on it, assume it's 15 Amps
or at least 1200 Watts, which is the most you can draw from a normal
household circuit. Your timer should be rated for that.

my timer is rated for 15A, but i don't think it's the timer causing the
trouble.

Many new a/c units have digital timers built in, but I'm sure you'd
prefer to use the one that's already paid for.

this one does have a digital timer built in, but the way it works is that
you have to turn the unit on, then can choose a number 1-12 (hours)
that will keep it on for that long; whichever you choose. the thing is that
you have to physically be there to turn it on before you can set the timer
which doesn't work in this application. either that or i don't understand
the timer. it's like a Sleep timer on a radio...