Hi everyone. First time posting to TFP but I’ve learned a ton from the forums, so first, a thanks to all the participants. Second, I’m not sure if I should be starting my own thread or tagging SlipperyPete’s. I have a very similar issue with my MasterTemp 400 but let me know if I should move to my own thread.
My heater goes through the ignition cycle, blower starts and igniter clicks (three cycles) with gas smell, but no ignition. Service heater light comes on but no error LEDs under the control board light up. I’ve torn the heater apart a few times in the past (and now wish I’d just replaced it) to swap the heat exchanger pot last year and this month swapped the heat exchanger and control board. I’ve got so much sunk cost in the repairs now it makes no sense to replace, but I’m at a loss for the current issue. I’ve replaced the igniter and tested the replacement at 130 ohms at ~78 degrees. I’ve read conflicting posts about whether that means Amazon sent me a bad igniter, but I got one ignition yesterday only to repeat the backfire (?) process that had me calling the pool man. The pool man had me replacing the heat exchanger due to a slow crack/leak that he blamed for the ignition issue ($1,000 later, I think he was wrong). I’m at a loss at this point. I will say, when I took apart the heat exchanger pot the flame holder (the cylindrical piece not the cone) was in rusty/rough shape from the previous water in the pot. Before I replace that simply due to rust and drop another $200 into this guy, I thought I’d post here for any other advice. Thanks again all.
My heater goes through the ignition cycle, blower starts and igniter clicks (three cycles) with gas smell, but no ignition. Service heater light comes on but no error LEDs under the control board light up. I’ve torn the heater apart a few times in the past (and now wish I’d just replaced it) to swap the heat exchanger pot last year and this month swapped the heat exchanger and control board. I’ve got so much sunk cost in the repairs now it makes no sense to replace, but I’m at a loss for the current issue. I’ve replaced the igniter and tested the replacement at 130 ohms at ~78 degrees. I’ve read conflicting posts about whether that means Amazon sent me a bad igniter, but I got one ignition yesterday only to repeat the backfire (?) process that had me calling the pool man. The pool man had me replacing the heat exchanger due to a slow crack/leak that he blamed for the ignition issue ($1,000 later, I think he was wrong). I’m at a loss at this point. I will say, when I took apart the heat exchanger pot the flame holder (the cylindrical piece not the cone) was in rusty/rough shape from the previous water in the pot. Before I replace that simply due to rust and drop another $200 into this guy, I thought I’d post here for any other advice. Thanks again all.
