MNW Posted January 4 Report Share Posted January 4 Hi, I'm looking for some help troubleshooting a Jacuzzi J-365 (2010) that isn't heating. The circuit board does have some charring by the relays, but I've still got 240V at the relay terminals when the heater is on. Is there a way to isolate whether the relays/board is bad or if it's the heater itself? Quote Link to comment Share on other sites More sharing options...
CanadianSpaTech Posted January 6 Report Share Posted January 6 Post photos of the circuit board so we can see. Quote Link to comment Share on other sites More sharing options...
CanadianSpaTech Posted January 6 Report Share Posted January 6 On 1/4/2024 at 12:56 PM, MNW said: Is there a way to isolate whether the relays/board is bad or if it's the heater itself? Disconnect the heater from the board and test for 240V coming off the board when the heat indicator light is lit on the topside. If you gat 240V you likely have a bad heater element. Test the 2 wires for continuity. If you don't then it's a board issue and likely a blown relay. Relays can be replaced fairly cheap. I normally have my electronics repair guy replace all the relays while it is out. Quote Link to comment Share on other sites More sharing options...
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