Some models of dehum have a set point thermostat tht clamps to the
freon tube. If it gets too cold, it shuts off the compressor.

AC guys call that a "freeze stat", and they are a very good idea.

--

Christopher A. Young
You can't shout down a troll.
You have to starve them.
..

"Bob" wrote in message
. ..

"Lorrie" wrote in message
news:YHn8g.5211$zn1.4134@clgrps13...
My dehumidifier keeps frosting/icing up (very, very thick buildup)
on the
coils and not melting and going into water pan. I currently wait
until there
is quite a build up then turn if off, the buildup melts, then I turn
the
unit back on again and repeat.
Why is the build up not melting, I thought the room may not be warm
enough
to allow melting. The room is of normal temp about 72 degrees F.
Could the
cooling fan be moving the warm air away from the coils, so that the
buildup
cannot melt.
This is only my logic, I am assuming this is part of the theory of
how a
dehumidifier is suppost to work.
Could there be something mechinical wrong with the unit?
Why is it building up ice and not melting??

I have heard that low refrigerant charge can cause this. You could put
it on a timer.
There is one available that allows you to turn something on or off
every half hour or hour.
Set it to turn off 1/2 hour or hour every few hours.

Bob