Cindy williams

I can now answer my own question. I checked my propane pressure before and after gas valve and after that it worked. A friend in the know said there may have been moisture in valve that was displaced by test.

My 3 yr old Zodiac Legacy lrz400 runs 30 seconds and shuts off. No errors are displayed. I have tested and jumped the high limit switches, fusible links,water pressure switch. I’ve ohmed the flame sensor and ran it unplugged. It goes out after 7 seconds. I replaced the ignition control board and nothing changed. The propane tank is full and feeds other heaters in the house. Hopefully someone else has had this problem and has a thought. My next move will be interface board. thankyou,Kevin