i've got a jandy lxi 400k btu heater that will turn on, sounds like it fires up (roaring sound) but there is no warm air coming from anywhere on the unit, after about 4 or 5 minutes i receive an error that reads "*fault* check ign control" i contacted zodiac and was told to just replace the ignition control, which is a pricey item. has anyone else had this problem and found any other solutions? we honestly didn't go through much trouble shooting while on the phone and i don't want to pay $350 for this ignition control, replace it, and it doesn't resolve the issue. any help is greatly appreciated!