RV Repair: furnance, mud daubers, gas valve

Question
i have a furnance that lights automatically, lately it dosent light although it tries you can hear it clicking.  i have full prophane tanks the batteries are a little weak.

Answer
Bill,
     Depending on how weak the batteries are, if you aren't plugged into AC power that may be the problem.  You can shine a flashlight in the exterior furnaces vents and look for a blockage in there.  Hornets and mud daubers love to build their nests in there.  If neither of those is the case then it sounds like a bad gas valve or circuit board may be the blame.  I hope this helps.

Darren