Your board should have 3 leds
The control panel
should have a red power light and a green ready light. The red power light must be solid and not blinking.
The green ready light will only be on if the SET temp is reached. IE
you have the temp set to 100F and the tub is 100F+
If the green ready light is NOT on at the control panel, the tub should be heating and that would mean the HEATER ON led on the board should be ON
If this is the case you have a bad circuit board OR
you may have a SUMMER TIMER switch on the side of the IQ control box. I cannot recall if '09 models still used it, but it would be directly above where the 2 temp sensors plug into the side of the IQ control box. If that has been moved it will disable the heat and the circ pump for long periods.
The last senario is less likely, but please check. There is usually a piece of red tape covering it.
If you scroll the temp up to 104F and the ready light is NOT green, AND the circ pump is flowing AND the HEATER ON led on the board is NOT ON... you have a bad circuit board.
Ill check back as soon as I can today if you have any further questions.