hi all, just powered up my heater first time this season... and its locked in standby mode and bypass operation, it is controlled via aqua logic control panel. when i try to switch it into pool mode on the heater itself it does nothing, the panel shows "Bo" but i can't change, i've gone through most simple steps that come in the manual but still nothing... this is my 5th year with the heater and i have never had this happen. please tell me if im doing something wrong, and help me with it-- complete newbie.. any help would be greatly appreciated Beer 4U2

Heater not firing up, and it's a strange one. Not getting anything on the LCD display but the backlight is lit, which leads me to believe there is power getting to it. When power switch is put to on, there is a click in the Robershaw gas valve and the backlight on the display comes on, but that's all that happens. The power switch is working and I'm getting 24V to the module, but the igniter is not kicking in to start the pilot at all, so I am thinking that it's possibly either the PC board or the ignition control module. Any thoughts? Model # is L-400 A (Leslie's), which is Raypak # R405. Thanks for any help you can provide.