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Regardless of whether he temp of the water is above or below the set temp, the fan and compressor run. But the machine recognizes the temp, starting the 3 min standby mode of either the chilling or heating light blinking until becoming solid at which point the relays kick in. I’ve physically heard the relays click, and also held a multimeter on the ground, which is j9(jumper9) on the board and the red probe to each of the COIL terminals individually. Once the light becomes solid, one of the terminals on one of the relays COIL(opposite relays depending on heating and cooling, the pics show the one closest to the temp sensor connection as heater) voltage goes to zero. I even then bright the set temp up so that it would trigger the heater and IMMEDIATELY, that terminal received power again. Then once the heater light became solid, the same terminal as before, but on the heater relay, lost all voltage. So I assume that means they’re working, right?
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