Yesterday a plumber installed this pump and tried to test it but it didn't start. There is power as you can hear a not loud noise. He tried to check the impeller and he said he feels some factory plastic debris and removed one tiny piece with screw driver. He tried to turn the impeller manually and said it kind of turn not easily. and told me to the call warranty as he encountered similar situation once before with factory debris in it. Also he didn't put water in it since the spa plaster is not done yet. I asked him if water is a must and he said at least for few seconds it should have worked. I would appreciate any thoughts before calling the warranty. The warranty papers says it must be installed by professional installer in order to cover and I'm not sure if the plumber is. Thank you in advance.