Hi All,
I have a one-year-old Raypak 406A heater that has been great until last Sunday, 5/19. The heater worked perfectly up until the day before with no issues whatsoever. All of a sudden, I went to fire it up on Sunday and noticed a code on the display that says "Lownox Tab Fault."
I read up online a bit and figured I'd look at the motherboard behind the screen to see if there were any burn marks, cracked wires, etc. I flipped the board down and didn't see anything out of place. I then reset the fault codes and heater per the manual's directions and tried to restart (on/off)—the same code reappeared.
I decided to look at the board one more time, and when I did, I accidentally pulled the green wire (top of the board) from its connector (not sure which sensor this is). I plugged it back in, and all of a sudden, the heater fired up and began to work. It ran for a few minutes, and then, it cut off again with the same code. Decided I would pull the same sensor wire and reconnect again and see what happens. I couldn't believe it but the heater stayed on, didn't throw the code again, and worked great the rest of the day.
I finished using the pool, cut the heater off, and turned in for the night. The next morning, sure enough, the code was back, and the heater was inoperable. I haven't tried pulling that wire again, as obviously something is wrong. Can you give me any direction on how to diagnose/repair it?
Thanks!
I have a one-year-old Raypak 406A heater that has been great until last Sunday, 5/19. The heater worked perfectly up until the day before with no issues whatsoever. All of a sudden, I went to fire it up on Sunday and noticed a code on the display that says "Lownox Tab Fault."
I read up online a bit and figured I'd look at the motherboard behind the screen to see if there were any burn marks, cracked wires, etc. I flipped the board down and didn't see anything out of place. I then reset the fault codes and heater per the manual's directions and tried to restart (on/off)—the same code reappeared.
I decided to look at the board one more time, and when I did, I accidentally pulled the green wire (top of the board) from its connector (not sure which sensor this is). I plugged it back in, and all of a sudden, the heater fired up and began to work. It ran for a few minutes, and then, it cut off again with the same code. Decided I would pull the same sensor wire and reconnect again and see what happens. I couldn't believe it but the heater stayed on, didn't throw the code again, and worked great the rest of the day.
I finished using the pool, cut the heater off, and turned in for the night. The next morning, sure enough, the code was back, and the heater was inoperable. I haven't tried pulling that wire again, as obviously something is wrong. Can you give me any direction on how to diagnose/repair it?
Thanks!
