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Oh I should clarify: I am certainly NOT suggesting that I would take out the flame sensor. I'm just trying to make sure that you agree with my above tests, namely that when the flame sensor is plugged it, it is in fact the flame sensor that is shutting the system down, and not some other fail...

Okay so update from my end: Installed the new flame sensor and used a wire brush on the various terminals and connection points. I did note that some areas seemed cleaner than others, should I be using some sort of solvent at this point to completely remove the corrosion? As for my testing, I...

That seems like a very reasonable suggestion. The new flame sensor just came today, so I'm going to clean the wires as suggested and see how that work out tomorrow. I want to convince myself I'm at least making progress before I sink more money into parts like the valve, as if I end up having...

Thanks for the detailed review. I had cleaned a few of the ground connections but hadn't really done any of the others. I'll give all the wire connections a good brushing, along with the various burner attachments when the new flame sensor comes in. Unfortunately the new flame sensor doesn't...

Ah that's too bad. Thanks for checking!

Various wiring pics. One thing that may be of note is the placement of the ground. Although my tests didn't really find any difference with it's placement, it could go closer to the flame sensor as per the article about flame sensors

Pictures of the burner tray, and where flame sensor is supposed to go

Having some trouble with my phone pictures right now, but quick update: There is definitely some dampness on the bottom of the unit, which is troubling. A lot of what you are seeing down there is wet insulation that has come off. Regardless, it is cleaned up now. I've also checked all the...

Here are the various pictures I've taken to date. Not sure if they help at all. We've got thunderstorm watch for the rest of the day, so I'll snap more pictures when I clean out the burners/orifices. Please let me know if there is anything else that would be particularly helpful when I work...

I just checked the gas valve which has a "VR8305H 4013" code on it. I can't find a serial number on the heater itself. The Fenwal unit has catalog number 05-339013-003 and also E0201300, not sure if those can help. I moved into the house in 2014, and the heater looked like it had been used...

Thanks for the quick response! I've seen at least two manuals floating around, but this one has the wiring diagram that looks exactly like the one inside the heater: https://shop.solardirect.com/pdf/pool-heaters/gas-pool-heaters/jandy-lite2manual.pdf . Page 7 has the wiring diagram. The...

Hello all, I was recently having an issue with my pool heater (Laars Lite 2 - Natural Gas, LD), in that it would ignite, and then turn off w/n 1-2 seconds. After some research, it seemed it might be a faulty flame sensor. I started cleaning it off in place but the contraption with the flame...

Dumb question: Is there any worry about the partial drain on a plaster pool for winterization? The mesh cover instructions say to keep the water level at 15-18" below the top, but I'm wondering if there is any issue of that exposed plaster being damaged over time. I haven't seen any issues the...

Thanks to both replies. I opened the pool yesterday morning, and pool was surprisingly clean, mostly just worms and a negligible amount of dirt. Polaris and brushing has picked up 98% of it as of this morning, so hopefully one more brushing and vacuum will take care of this. Now I just need...

Hello, and thanks as always for all the great info. I did not open my own pool last year but plan on doing so this year. Throughout the season I was able to maintain a clean plaster pool through brushing and a Polaris 360. I have a loop-loc cover so it will be definitely not be spotless when...

Not sure if this helps, but here is a picture of the cover and a picture of the screw/threaded insert.

First off, I absolutely love this forum, you guys have taught me so much on pool and hot tub chemistry. Just put in my donation for lifetime member status. Now for my most recent problem: I noticed one of the screws was protruding from my main drain cover, so I tried to screw it down, with no...