Our pilot light keeps going out on our gas fireplace. It lights fine and we have a full tank of gas. It was working fine and then it started to do this. It could be dirty. How would I clean it. We have had very low tempetures in the past few days. It has never done this in the past. O'Neilmom

LP gas tanks loose pressure in very cold weather. You probably need to keep your tank full or get a bigger tank.

There is an oxygen sensor on vent-less gas fireplaces. It get's clogged up with dust and cobwebs and has to be blown out once a year or else you will have the exact problem you do. Here's a link to a variety of pilots and where the hole is you need to blow out. Just go to Walmart and get a can of compressed air. It's a good idea to use this air to blow out your computer insides at the same time each year.

http://sites.google.com/site/sublimeappliancerepair/ask-the-sublime-one-a-question/furnace-comes-on-and-shuts-down/common-furnace-problems/thermocouple-operation/heater-pilot-goes-out/pilot-will-not-stay-lit-ods-secrets