I just bought a house and the sellers haven't been very helpful regarding questions I have about how some things work. There is an Orbit irrigation system in place that does not look very old and which reportedly was operating well "recently". The control panel is located in...no kidding...a garage attic which can be accessed only by climbing an 8 ft ladder (not included) There was damp soil around the system valve/pump arrangement on the ground but no evidence of watering for the 3 days since e...