I can't give you any advice about the heater, I know less than nothing about them.
Is the pump making any noise at all? Making any attempt to run? Have you tried checking to make sure there's not gunk in the impeller? YOu should be able to get to the impeller by taking the front cover off the motor, but make sure the power is off and there's no way the motor can start while checking it, because you will lose fingers that way!
By "the round things", do you mean the return eyeballs? Mine were stiff this year too, just took some extra effort to get them to turn. Mine turn easier clockwise than they do counterclockwise...
Janet
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