You say that:
Originally Posted by marnold388
When I turn my fridge to gas or unhook the power it will not light on lp.
Does the fridge also fail to light when you switch to gas when you're plugged into shore power?
If fails when only when you're trying to light it on battery power, I'd suspect the battery is undercharged; and if it's over four years old, it might need replaced. However, if it also fails to light when you're plugged in, then I'd suspect the thermocouple.