I have a Hayward H250 with electronic ignition. My heat exchanger started leaking so I installed a new one. I shut off the propane valve (outside of the heater) and unplugged the power before starting the installation and plugged the power back in and turned the fuel back on afterward. The installation was really straightforward and everything seemed to go fine. The leaks are gone and the temperature and pressure switch both seem to be working fine. Unfortunately, when I tried to fire the heater up, it wouldn't ignite. The fan comes on and I can hear it clicking, but the burners won't ignite. After a number of tries, the panel shows "IF" (insufficient fuel). If I put my nose near the exhaust vents on the top, I can faintly smell propane when the unit is trying to light. I know I have plenty of propane. Does anyone have any idea what I should look for? I honestly have no idea what to look for. The installation of the heat exchanger was so straightforward I don't know what I could have done, but it would be an awfully big coincident if it isn't related (the heater fired up fine yesterday before I swapped the exchanger). I would really appreciate any help!!

Hi everyone. I'm hoping someone could help me decide if what I have is adequate, and if not, what you think is needed. Of course...leaving it as-is would be fantastic if it will work. We have a small hot tub that we want to put on our deck. The deck was just recently reinforced but not with the intention of putting a hot tub on it. I have included quite a few pictures. The deck itself is made up of the following: -posts are true 6x6 fir -posts are 8 1/2' and 9 1/2' between each post -posts sit on concrete sonotubes buried 18" and sitting on 20"x20" concrete footing -sonotube is attached to footing with rebar -posts sit in 6X6" saddles (post anchor) with 4-6" rebar going into sonotube -beams sitting on posts are 3 (triple) 2 x10" fir beams sitting in metal saddles (post anchor) -deck joists are 2x10" and are 16"OC (some are 14" for some reason) -There is only one row of bridging. They are not offset. They are 2x4" and are at the top of the joist not in the middle. -The joists at the house side for the most part sit 4" into the inside of the house, they do not go deep into the house as in new construction. - The window and sliding door are new. -Sliding door has a steel i-beam (as shown) with 4 - 2X4" on each side. I don't currently have the i-beam stats but if I can get them I will post. -the window has 3 - 2X4" supporting the window header. -Filled weight of the hot tub is 2500lbs, plus add 1000lbs to the extreme for people, so 3500lbs total. If my calculations are correct that would be 71.5lbs per square foot. - The tub is 8x8 feet