Rinnai mdl. 1001 LP does not light.

If your unit starts and runs for any length of time before quitting you may have a problem with the circulating fan blades. They need to be spotlessly clean. The filter is easy to get to, however the blades are not. Taking the circulating fan apart is a pain. A long brush that can get into the blades would work. You can blow them out with air but that gets everywhere. If the whole inside of the unit is linted over, all that stuff has to go. Be sure the lovers in the front of the stove are all open.

Good luck,

Tom Hawkins
hawkins111@gci.net