GFCI keeps tripping.
A) Check heater element (corroded through, pinholes,
etc). With power to spa off, turn the thermostat fully counter clockwise (CCW)
to the off position. Re-energize and start pump (low speed on 100v or either speed on 240v).
If pump runs without tripping the GFCI, turn thermostat CW to activate the heater.
If the GFCI trips, then proceed to 2).
B) With power disconnected, remove both heater element power leads
(and wrap exposed lugs with electrical tape to prevent possibility of a short). If the
GFCI does not trip, replace heater element.
C) If GFCI trips with element disconnected, disconnect power, disconnect all loads from control
box (pump, blower, heater, ozone, etc). Re-energize. If GFCI still does not stay set, internal wiring is shorted or
GFCI is faulty. If GFCI remains set, reconnect each load until GFCI trips again. Last load connected must be
cause of failure (remember that some devices will not operate without others, i.e. heat will not engage without
Notes: Most of
today's spas have 12v light systems. However, some older
spas and in-ground installations will have 110v lights. A
leaking light housing can cause the GFCI to trip. Also
check for flooded blower or ozonator.
If your spa Control
System is equipped with a GFCI, and your shut-off box or breaker
box is also GFCI protected, this can sometimes cause the two GFCI units to
interfere with each other and may cause intermittent tripping.
Keep in mind that the purpose of a GFCI is to protect from
ground faults, and a tripped GFCI normally indicates such a
to Troubleshooting Guide