I have a propane bottle, kept outdoors, that feeds a gas hob and Electrolux
refrigerator. In sub-zero temperatures I get no pressure indoors, but am
unsure whether this is due to the regulator having some water in it, which
freezes and sticks it shut, or water in the gas pipe itself (which should be
impossible, if the bottles only contain dry propane).

Has anyone had experience of this? Is there an easy way of testing the
regulator/servicing it/drying it out? I am tempted to put it in a warm oven
for a while but don't want to damage any rubber components inside it.

Thanks

Roger