Acefryman6 Posted November 6, 2023 Report Share Posted November 6, 2023 I have a 2004 Caldera Aspire. I am having a issue with heating. Everything else works great ie: pumps, blower, lights exc. Just will not heat at all. I have replaced main control board, Heater relay board, pressure switch, and temp switch. I am at a loss still getting no heat. Temp light just flashes on the control panel. It does not light up on the board to say it is heating. Please help. Quote Link to comment Share on other sites More sharing options...
cranbiz Posted November 7, 2023 Report Share Posted November 7, 2023 Check the heater element. With an ohm meter, check the resistance of the heater. It should be between 12-18 ohms. You can also check that the heater is getting voltage when the tub is calling for heat. There should be 220V across the 2 heater terminals. (assuming you have a 220V tub) Quote Link to comment Share on other sites More sharing options...
Cusser Posted November 8, 2023 Report Share Posted November 8, 2023 23 hours ago, cranbiz said: Check the heater element. With an ohm meter, check the resistance of the heater. It should be between 12-18 ohms. You can also check that the heater is getting voltage when the tub is calling for heat. There should be 220V across the 2 heater terminals. (assuming you have a 220V tub) Above is GREAT advice, pretty universal too. I have a 1988 CalSpa which fortunately utilizes same 240 VAC elements as a home electric water heater, so inexpensive for me to replace the element when it goes bad. I've replaced the element in mine every few years, and I agree with cranbiz' troubleshooting advice. Quote Link to comment Share on other sites More sharing options...
RDspaguy Posted November 8, 2023 Report Share Posted November 8, 2023 There are 3 led lights on the board, which are lit? Quote Link to comment Share on other sites More sharing options...
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