Pilot light will not stay lit.
Hello All, I've been troubleshooting this for the past three weeks. apollo water heater approx three years old. pilot light seems to go out whenever the main burner shuts off. First fix attempt, I removed the burner and pilot assy, cleaned, and blew out lines, put back on and worked great for about two days. Second attempt, replaced pilot light assy, once again, worked for about two days. pilot light lights up fine, and if I leave it at a low temp, without the main burner coming on, the pilot light stays lit indefinitely. When I manually turn the temp up, causing the main burner to come on and than turn the temp back down so the burner goes out, the pilot light will stay lit. It seems to only go out when the burner shuts off automatically after water reaches correct temperature. Checked air vents on bottom of tank and they are clean. If anyone has a suggestion on what the problem might be, please let me know, Thank You.