On Mon, 1 Feb 2010 13:43:50 +0000, Mike Lane
wrote:

Gerard Bok wrote on Feb 1, 2010:

My dehumifier also stops working whenever the outside temp goes
below freezing point. (Never figured out why, but it is the same
every year.)

Could it be that the relative humidity inside tends to reduce with a low
outside temperature?

The reason they shut off automatically at lower temps is because the
cooling coils that the moisture condenses on will freeze up when
ambient temps drop below a certain point. (usually about 45F, or so)