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Every jet is opened, the filter is new (even tried without filter just to see), and here's the weird thing: if I press the jet button, there is no circulation, even though it hasn't reached its target temperature, yet (80, set to 100). I do know that there must be circulation or you'll burn out your heating element pretty fast. What could possibly cause this?And thanks for your reply!
I agree. I'll get the multi-meter out and test to see what's coming out when it's supposed to be circulating during heat-up. Thanks for the advice, guys. I'll report my findings.