I'd say get ride of it. They seem to be problematic. They also use quite a bit of electrical energy. I have one, you need salt water injection to use it in fresh or brackish water. I have gone through, mixing motors, and two tanks. Your battery charge condition has to high enough or you show a fault and the toilet will not treat. If your on the move, refueling and pump.out can be handled at the same time. In California they are illegal to use in an ancorage, or harbor. That is where I seem them used the most. Live aboards love them as they can leave the boat at the dock and never move it. Of course they are illegal, but most don't know it. I loved mine after spending a small fortune installing it. Not so happy now that I've had to fix it.
I'm sorry, but a lot of what you say just isn't true. The discharge of treated waste is illegal in most of SoCal waters, but is LEGAL in ALL coastal waters on the whole west coast north of Santa Barbara except for Richardson Bay (Sausalito) a small harbor off SF Bay. That includes anchorages.
Although the current DRAW appears a bit scary, actual current CONSUMPTION only averages about 20 AH/day for a liveaboard cruising couple.
Yes, the LectraSan/ElectroScan does need salt. However, if you're not in fresh or brackish water often enough to be worth installing a salt feed tank, salt CAN be added manually to each flush. Two coffee measures is the recommended amount.
Yes, it's necessary that batteries maintain sufficient charge to run a treatment device. However, low voltage is not only damaging to treatment devices, it'll destroy ANY electric motor. In fact is the leading cause of sluggish discharge in electric macerating toilets. This is the reason why toilets and treatment devices should be on their own separate dedicated circuits, shared by nothing else--not even cabin lights--that can reduce power to it.
The ElectraSan/ ElectroScan requires regular cleaning to remove sea water mineral buildup on the electrode pack. This does not require taking anything apart; directions are in the owners manual. In cooler waters, this may only be necessary once a year...in tropical waters, as often as every 3 months. Neglecting this is guaranteed to cost you an electrode pack and often fuses as well.
If you are mostly in brackish or fresh water, or if your toilet uses onboard freshwater, the LectraSan/ ElectroScan was the wrong choice. The PurSan was designed for use in fresh water, but works equally well in salt and brackish. It does not need salt.
So if you (generic you, not you personally) don't keep your batteries sufficiently charged, don't make sure it gets enough salt--or use to much salt, which is as damaging as too little, don't clean it regularly, or you have the wrong device for your boat and waters, it's not surprising that you'd have so many problems with a LectraSan/ ElectroScan that you'd recommend against it. Those who DO operate and maintain according to directions have very few problems with them for decades.