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Intermatic Grasslin Pool Time Clock 24hr 240v Timer With Override Fm1stuzh-240 Fm/1stuzh ^ Questions & Answers
Spa motor turns on by itself. Noramally air switch
With time you get condensation in the air tube. It has a very low PH and will build an alge block.Once this occurs a change in air pressure or air temp will cause it to trip the switch. So you will need to pull in new tube. It's a good idea to go with a new button when you do this.
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