rgbraun1 Posted November 3, 2021 Report Share Posted November 3, 2021 Have the older Minimax nt tsi 400. Went out to check the equipment and the only light that was on was the "Pressure SW" light. Had a good electrical storm go through and take out my WiFi router, electric dryer and I guess the pool heater. I replaced the transformer, hoping for a cheap fix but it did not work. What do you think is bad....the main digital display #472100? Thanks Quote Link to comment Share on other sites More sharing options...
CanadianSpaTech Posted November 3, 2021 Report Share Posted November 3, 2021 Post photos of the circuit board and schematic on the inside cover as well as the topside control so we can see what you have. Quote Link to comment Share on other sites More sharing options...
rgbraun1 Posted November 4, 2021 Author Report Share Posted November 4, 2021 I will try to get some pics posted tomorrow after work. Quote Link to comment Share on other sites More sharing options...
rgbraun1 Posted November 5, 2021 Author Report Share Posted November 5, 2021 Here’s some pics. Let me know if there’s other pics I can provide. Thanks for showing interest and in expertise you can share. Quote Link to comment Share on other sites More sharing options...
CanadianSpaTech Posted November 6, 2021 Report Share Posted November 6, 2021 Try and jumper the pressure switch and see if anything changes. Remove the 2 wires from the switch and join them together with a paper clip or interlocking them together. This will bypass the pressure switch. Had one storm few years back that took out 3 spas in one night. Just dead.. tried everything buy it likely wipes the chip https://www.manualslib.com/products/Pentair-Minimax-Nt-Tsi-400-4055466.html Quote Link to comment Share on other sites More sharing options...
rgbraun1 Posted January 18, 2022 Author Report Share Posted January 18, 2022 Hey Canadian spa tech can I use a blower for a Minimax nt tsi 200 in place of a 400? I can find a 400 anywhere. Quote Link to comment Share on other sites More sharing options...
CanadianSpaTech Posted January 18, 2022 Report Share Posted January 18, 2022 no idea Quote Link to comment Share on other sites More sharing options...
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