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Why is my high limit aquastat behaving like a low limit aquastat?

Hello, I am having an issue with the high limit aquastat. As you can see from the attached pic, I have disconnected the low limit aquastat wires from the burner because I no longer need it as I have installed a electric heat pump water heater. Why is the high limit aquastat, a honeywell l4006a, clicking and turning on the burner even though there is not a call for heat? Thanks in advance for all of your advice.


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