hi
pressing the fog button turning only the pump on is right, cause the fan will run on standby with a pump value of 0.
setting another value on the pump channel will activate the fan with the value you have set for that channel.
fan & pump control:
just select the tour hazer II and select Misc in the programmer area
there are 2 enabled faders. The left one for controlling the pump and the one in the middle for controlling the fan.
the right one is disabled and have no function with this device.