J365 Jacuzzi Posted September 27, 2020 Report Share Posted September 27, 2020 Hello, Wondering if anyone can help me identify what this is. Recently had an FL2 error code on my spa and while inspecting the wires behind the panel I noticed some charring in an area towards the bottom of the control box. This was lying at the bottom of the box. The tub seems to work fine other than the FL2 error and I can’t find anywhere on the board where this would have come from. Quote Link to comment Share on other sites More sharing options...
RDspaguy Posted September 27, 2020 Report Share Posted September 27, 2020 That is a component off of your circuit board. Bring it to an electronics repair shop. Quote Link to comment Share on other sites More sharing options...
J365 Jacuzzi Posted September 27, 2020 Author Report Share Posted September 27, 2020 Thanks, do you happen to know which component? I inspected the board and schematics I could find and there’s no indication of where that part came from. The board is still clean and the tub works fine. I have a replacement flow switch coming to address the FL2 error. Quote Link to comment Share on other sites More sharing options...
RDspaguy Posted September 27, 2020 Report Share Posted September 27, 2020 I don't do electronics repair, but recognize that from every circuit board I have ever seen. 1 Quote Link to comment Share on other sites More sharing options...
J365 Jacuzzi Posted September 27, 2020 Author Report Share Posted September 27, 2020 This is the board without cables and I don’t see anything that resembles that resistor on here. 211CE568-730A-4450-ABF4-60C3BDD08CC6.webp Quote Link to comment Share on other sites More sharing options...
CanadianSpaTech Posted September 27, 2020 Report Share Posted September 27, 2020 Not from the circuit board. There is a snubber to the left of the red wire in your photo. One side wire of the snubber goes into the red wires and one side wire of the snubber goes to the black Think you can find a photo of a Jacuzzi pack on the internet... Example here at 0.02 you will see it (different pack same idea) Here: (it's the blue thingy) 2 Quote Link to comment Share on other sites More sharing options...
CanadianSpaTech Posted September 27, 2020 Report Share Posted September 27, 2020 Man there are burnt marks all the way over to below the fuses holder...That thing must have exploded shooting flames and smoke and stuff. Lot of black on the underside of the red wire I would check it for melted sheathing and exposed wire...just to be safe 2 Quote Link to comment Share on other sites More sharing options...
RDspaguy Posted September 27, 2020 Report Share Posted September 27, 2020 1 hour ago, CanadianSpaTech said: snubber Is that a technical term? 😁 Good call Canadaguy! Another gold star for you ⭐. At this rate, you'll make the honor roll for sure! 🤣 Quote Link to comment Share on other sites More sharing options...
J365 Jacuzzi Posted September 27, 2020 Author Report Share Posted September 27, 2020 7 hours ago, CanadianSpaTech said: Man there are burnt marks all the way over to below the fuses holder...That thing must have exploded shooting flames and smoke and stuff. Lot of black on the underside of the red wire I would check it for melted sheathing and exposed wire...just to be safe Thanks! I’ll take a thorough look. Any idea what the specs would be of a replacement? Here’s another photo showing what may be some charring marks around those similar power lines. Quote Link to comment Share on other sites More sharing options...
CanadianSpaTech Posted September 27, 2020 Report Share Posted September 27, 2020 6 hours ago, RDspaguy said: Is that a technical term? 😁 Well @RDspaguy Glad you asked. Yes in fact it is...not sure I used it correctly but it actually is Ha Ha you've been Snubbered...mic drop...picks up gold stars and leaves 2 Quote Link to comment Share on other sites More sharing options...
CanadianSpaTech Posted September 27, 2020 Report Share Posted September 27, 2020 Is this a new install? Looks like it shorted out and the SNUBBER did it's job...but I'm just guessing...lol No Idea on a replacement SNUBBER Those black wires got real hot Post photos of YOUR board so we can see everything Quote Link to comment Share on other sites More sharing options...
J365 Jacuzzi Posted September 27, 2020 Author Report Share Posted September 27, 2020 Install was about 5 years ago. This past spring we noticed our interior breaker fouled and needed to be replaced. I’ll dig around online for a replacement. I found a couple pieces and “reassembled” it to reveal some numbers. Quote Link to comment Share on other sites More sharing options...
J365 Jacuzzi Posted September 27, 2020 Author Report Share Posted September 27, 2020 Found some! Quote Link to comment Share on other sites More sharing options...
J365 Jacuzzi Posted September 27, 2020 Author Report Share Posted September 27, 2020 Just for anyone with a similar issue in the future. This is where it appears to have blown out. Quote Link to comment Share on other sites More sharing options...
J365 Jacuzzi Posted September 27, 2020 Author Report Share Posted September 27, 2020 Here’s a photo of the rest of the board. Pretty crowded with wires. As of right now everything. Seems to work fine except the flow switch. I have a replacement coming for that. FL2 (stuck closed) error when plugged in and FL1 (stuck open) when I power the tub without the switch installed. Quote Link to comment Share on other sites More sharing options...
CanadianSpaTech Posted September 27, 2020 Report Share Posted September 27, 2020 @J365 Jacuzzi My advice...pull the board and have a look on the backside for burnt or darkened areas around the relays. The relay bottom right looks like it might have had a hot spot and looks a little different than the others in the photos you posted. There has been an event to cause the SNUBBER to fail. Gotta know why or you could be in for further issues if not corrected. Not a hard board to pull and can be re and re'd in half hour. I suspect you will find the heater relay might be the cause but that is only a guess. If you do let us know results 1 Quote Link to comment Share on other sites More sharing options...
J365 Jacuzzi Posted September 27, 2020 Author Report Share Posted September 27, 2020 Ok, so I pulled the board out and took some photos of the back. There's an area that seems somewhat discolored but not sure if that's normal. Any idea what this section of the board is responsible for? Quote Link to comment Share on other sites More sharing options...
J365 Jacuzzi Posted September 27, 2020 Author Report Share Posted September 27, 2020 20 minutes ago, J365 Jacuzzi said: Ok, so I pulled the board out and took some photos of the back. There's an area that seems somewhat discolored but not sure if that's normal. Any idea what this section of the board is responsible for? Adding a photo Quote Link to comment Share on other sites More sharing options...
J365 Jacuzzi Posted September 27, 2020 Author Report Share Posted September 27, 2020 It looks like there was a change in the chip style between the models of board. My tub has circuit board 6600-293. Later model tubs used an updated replacement board 6600-297. One of the differences appears to the type of chip used. On my board the area behind that chip appears somewhat discolored. Wondering if that contributed to the snubber blowing.🤔 Quote Link to comment Share on other sites More sharing options...
CanadianSpaTech Posted September 27, 2020 Report Share Posted September 27, 2020 HMM...Thought there would have been some damage behind the K8 heater relay. No idea what that area controls or does. I have a guy... when it comes to stuff like that. Backside of board LOOKS good IMO. If it's running good then fix the F2 error and carry on I guess. @ $0.59 order several snubbers...just in case 1 Quote Link to comment Share on other sites More sharing options...
J365 Jacuzzi Posted September 28, 2020 Author Report Share Posted September 28, 2020 Thanks for all the help! 1 Quote Link to comment Share on other sites More sharing options...
RiverSherpa Posted May 20, 2021 Report Share Posted May 20, 2021 I have the exact same model and the Snub Transistor is in that same location. Definitely a standard component. Quote Link to comment Share on other sites More sharing options...
RiverSherpa Posted May 20, 2021 Report Share Posted May 20, 2021 I also have discoloration in the same are ( U2 / C2 ). Mine looks a little worse than yours. My problem was my Topside Controller acting up, then lights out. I replaced the Topside and got lights, but no display or controls. Looking at ordering the Next Rev board 6600-297. I pulled by board and saw the same discoloration. Here I my pics: Quote Link to comment Share on other sites More sharing options...
RiverSherpa Posted May 23, 2021 Report Share Posted May 23, 2021 Update: I got the new controller board in (Part 6600-297) and it resolved my issue. I feel that the old controller board Rev (6600-293) had a faulty chip design at U2/C2, and that has been corrected on the new Rev. The board swap was clean one-to-one on all connections and the screw holes match up. The only thing I had to do was set J8 Jumper to off in order to go from celsius to fahrenheit. I didn't have a blown Snubber Transistor, so I don't think I took a surge like you did. Maybe a smaller surge that didn't blow my Snubber or any of my fuses. Anyway, if you have any issues with you Topside Controller and you have a burn mark at U2/C2 on your board, you can bet you need a new board. Got mine through SpaCare around $300 and it got here in 2 days. Props! Quote Link to comment Share on other sites More sharing options...
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