I have an Intellicenter running my pool/spa including the Mastertemp heater. If I turn on spa mode and select the heater option "off" the heater will then fire up with the notification/indictor showing the flame on in manual heat mode. It would then run up to the heater face panel max temperature, which I have set as the next the spa should ever go to when being controlled by the Intellicenter. It seems the only way to keep it from firing in spa mode is to keep "heater" selected and keep the setpoint below the water temperature. The pool does not behave like this. When in pool mode and the heater is selected as off, no fire as expected. Is this normal or a potential wiring or setting issue?