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8.9 Pump Runs And Quits During Jet Mode
This is usually a problem of the pump overheating. The pump motor incorporates a ther-
mal cutout that triggers when the motor gets too hot. There is no reset for this condition.
When the motor cools, the thermal switch resets automatically. In some cases, a faulty
circuit can also cause this problem.
Diagnostic Tools: Clamp-on ammeter, voltmeter.
Suggested Spare Parts (Page 59): Circuit board, pump.
Standard Troubleshooting Approach
Danger: Electrical Shock Hazard Exists!
High Voltage Present On Circuit Board. Use Ex-
treme Caution While Servicing Circuit Board.
Press JETS 1
button. Does pump
make a "laboring"
sound?
Pump has thermally
shut down. See
page 43.
Call an electrician to
fix problem.
Replace pump.
Is there sufficient
voltage connected to
hot tub. Check for
240 VAC –10% (or
120 VAC –10% for
J315, J325 Models)
at TB1 test points 1
and 2.
Check voltage with
pump running. Is
the voltage 240 VAC
–10 % (or 120 VAC
–10% for J315, J325
models) at test
points 1 and 2.
Is voltage from circuit board
to pump correct after pump
quits? Check for 240 V
AC
(120 VAC for J315, J325
models) at recommended
test points. See table at right
for a listing of recommended
test points.
Replace circuit
board.
No No
Ye
s
Yes
Ye
s
Yes
No
This is caused by
insufficient wiring or
the pump drawing
too much current.
Contact Jacuzzi
Premium
Technical
Support.
No
Circuit Board Illustrations
A. 2002+ Protech LED Models (Page 50-
51)
Recommended Test Points
1. Low Speed Pump 1 - test points 18 & 19
2. High Speed Pump 1 - test points 18 & 20
3. Pump 2 - test points 21 & 22