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When I turn on the Master Panel’s “Flush Vac” switch it activates the switch in the Head. This turns on two LED indicators located on the lower right and left of this switch. Is the indicator under the “Flush” button for the level in the holding tank? Will it show the levels within the holding tank? (1/4 - ½ - 3/4 full) My indicator appears to show a solid box and I assume this means the holding tank is full and is preventing the toilet from flushing?
Sorry for this stupid question but the Owner’s Manual I found online is terrible on the whole “Head” system.