newbie with pool... pressure problem.

[JohnT]

If your drain isn't working, when flow to the skimmer stops while vacuuming you will lose prime.

[lange]

If your drain isn't working, when flow to the skimmer stops while vacuuming you will lose prime.

So what you are saying is my problem comes from the drain not working?
If my drain at the bottom of pool is not working... what might be broken???

[JohnT]

So what you are saying is my problem comes from the drain not working?
If my drain at the bottom of pool is not working... what might be broken???

Could have a leak in the line and they plugged it. Could be the type that routes through the skimmer and they didn't take out the plug in the skimmer when opening the pool. Could have a bad valve. Could be clogged. Could be that the pool loses prime if you open the valve to the drain suddenly (which is not uncommon) making them believe it didn't work.