19 Jun 11,
Does anyone know if a faulty water pressure switch ( Balboa # 30408) can cause the GFCI to trip? If it's bad,
is tripping the GFCI the way it protects the spa? I guess that would make sense because there is no other
way to reset the power except via the GFCI at the sub panel.
I ran continuity checks on the switch and get continuity if I blow into the very small opening on the switch.
I can hear a clicking noise from the relay I suppose and I believe that this is caused by the diaphragm moving
when I blow into the switch and cause the diaphragm to move. I shook out some rusty looking water from the
switch before I ran my tests.
I also checked the heater (Balboa # 50096 ) and has 11 ohms across the element posts. I checked for a short
by looking for continuity between an element post and the metal tube that houses the heating element. I did
not have continuity from wither post indicating that the element was not running to ground anywhere. I filled
the tube with water and tried it that way too and it was still O.K.
My spa kept tripping the GFCI until I disconnected the heater and pulled the water pressure switch from the circuit board.
Then it ran fine except it could not heat the water anymore..
I'm open to suggestions. Do I change out the switch or the heater assembly or both of them?
Thanks,
Keats
Arizona