Problem tylannitride SNF 2008-07-29 04:51:43: furnace won't open

[dgunning at snf.stanford.edu]

this is second time i have tried to run a test.. first time the first leak check failed and this time the furnace wouldn't open.  i ended pump program, waited between 10 and 15 minutes and tried to pull open but didn't work - seemed to be moving in when i press 'manual, fast, out'...??  reloaded pump program and tried again to same end.