My Pleasant Hearth liquid propane fireplace (it's either 20k or 30k BTUs) is only a year old. I am using a 100 lb tank attached to a copper line (with a regulator, of course). I live in Maine, so the copper line is wrapped in foam insulation.
The fireplace worked perfectly last winter, but this year it occasionally shuts down entirely--meaning both the burner and the pilot shut off. The pilot comes on again when I re-light it and will continue to stay lit, but if I turn it up high enough for the burner to come on, it runs for less than five minutes and then the whole shebang shuts down again.
I've done most of the troubleshooting--checking air flow, making sure the tank's not empty, all the obvious stuff. Could it be that I need a new regulator? The one I'm using is several years old.
I will be eternally grateful for any and all input!