Ok so you have the sprinkler valve system.

Some of those are probably failing and stuck open or closed. You can easily replace those with new sprinkler valves or convert it to a full reversible pumps system.

There’s a truckload of posts in here about the sprinkler valance upgrades or conversion.

Use the search function and look up “sprinkler valve upgrade”.

Here’s a start:
https://forum.moomba.com/showthread....on-GIII-system


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