I have two outdoor leisure td110 stand up propane heaters One unit I have will not stay lit after I have held primer in for awhile once I let primer go it turns off. The other unit I have the radiant heater part will not light. I do not hear the electric starter clicking and smell propane. I have replaced with new batteries in every spot.even replaced the two d batteries pack holder. Thanks Dave. My email is djlegion25@gmail.com