I have a Pentair system with two pumps: one for the spa and one for the pool. Each morning, I have the spa mode scheduled to run for 30 minutes before I run the pool pump all day. Suddenly, I cannot turn on the spa mode without the heater turning on. I have checked the wall unit to verify that the Heater is set to "off" which it was. We are just cycling the spa for 30 minutes each day and don't need the heater. Also, I have checked my "Schedule" and the spa mode is set to "off" as well. Any other ideas about how to run spa mode without the heater firing?