iache4myspa Posted November 30, 2020 Report Share Posted November 30, 2020 Over the summer my Tiger River Bengal stopped heating. It would heat up to temp initially and then wouldn't reheat after subsequent running. I have the iq2020 spa pack. I found a factory troubleshooting manual and went through everything I could find. Confirmed the circulation pump is working properly (even swapped in another one). Heater is working properly (swapped in another one just to make sure). Tried running it with and without the filter, no difference. Installed new temp and hi-limit sensors. Also flushed the entire system. Voltage to the spa is solid....it's been working great for years before this started. Finally installed an updated heater relay board and it worked several times before going back to it's old tricks. Next I put in a new factory circuit board. Still fails. I'm pretty sure the only thing left is the topside board which isn't made anymore. There's a few on ebay but they end up going over $200 and I'm wary about spending that much on a used panel. Does anybody know if any other manufacture topside controls could be swapped in, or if there's any place that rebuilds the panels? Quote Link to comment Share on other sites More sharing options...
RDspaguy Posted December 1, 2020 Report Share Posted December 1, 2020 4 hours ago, iache4myspa said: would heat up to temp initially and then wouldn't reheat after subsequent running. So, it heated up once and hasn't worked since? Or it will heat up if you reset the breakers, then not until you reset again? Does it heat up to set temperature, or just heat some then stop? Are the indicator lights flashing? Are the LEDs on the main board lit? Post some pics of the circuit boards, new and old if you still have them. Quote Link to comment Share on other sites More sharing options...
iache4myspa Posted December 4, 2020 Author Report Share Posted December 4, 2020 If you reset the breakers the spa will heat to temp initially and run fine. Then the next day you come out and it's only 90 degrees. Sometimes the topside control will say it is 102 degrees but then it's only 90. Other times it will just say 90...that's why I'm thinking it's a topside problem. Indicator lights on the board aren't calling for heat even though topside panel is set for 102...they aren't flashing. After a breaker reset then the heater LED comes on as normal and spa heats to temp. I've confirmed that's it's not on summer mode or anything. Quote Link to comment Share on other sites More sharing options...
RDspaguy Posted December 4, 2020 Report Share Posted December 4, 2020 Well, there are indicators on the main board that come on if the high limit is reading good and if the heater is on. There are power and ready lights on the side control, and there are lights on some new relay boards. If the "lim ok" is not on, it is getting a bad reading on the high limit, which could be from low flow, faulty thermistor, or bad board. This should make the power and ready light blink. There is also an issue with the relay boards that has recently come to my attention. https://www.poolspaforum.com/forum/index.php?/topic/47307-77119-heater-relay-board-multiple-failures/&do=findComment&comment=182272 The topside can display set temperature and actual temperature. If it is showing different actual temperature it is likely thermistors or main board. Quote Link to comment Share on other sites More sharing options...
iache4myspa Posted December 4, 2020 Author Report Share Posted December 4, 2020 It’s been a month or so since I tried to get it working so I’ll have to go back through the troubleshooting. If I recall all the lights were working correctly. As stated, the thermistor and hi limit have been replaced twice and the main board has also been replaced twice. The company I bought the board from thought I might have had a bad board so they sent another one. to recap: -new heater relay board -new circuit board x2 -new thermistor/limit x2 -swapped in a used spare heater -new circ pump -descaled and flushed -new filter -supply wiring and voltage all good Quote Link to comment Share on other sites More sharing options...
RDspaguy Posted December 5, 2020 Report Share Posted December 5, 2020 10 hours ago, iache4myspa said: to recap: -new heater relay board -new circuit board x2 -new thermistor/limit x2 -swapped in a used spare heater -new circ pump -descaled and flushed -new filter -supply wiring and voltage all good Which means you should have fixed it several times already. 🤔There's not much left. All I can do from here is tell you what I know from my own experience in the field. I can't speak for the parts you got or the manner of installation. The symptoms you describe I have never seen in 25 years in this business. A heater system usually either works or it doesn't. And if it doesn't, there are almost always error codes. Can you post a pic of your circuit board and wiring diagram? @castletonia, do you have any info on this situation? I am stumped. 1 Quote Link to comment Share on other sites More sharing options...
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