Pump Runs And Quits During Jet Mode - Jacuzzi Premium J-325 Troubleshooting Manual

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
Press JETS 1
button. Does pump
No
make a "laboring"
sound?
Yes
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.
Yes
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.
Yes
Replace pump.
Danger: Electrical Shock Hazard Exists!
High Voltage Present On Circuit Board. Use Ex-
treme Caution While Servicing Circuit Board.
Is voltage from circuit board
to pump correct after pump
quits? Check for 240 VAC
(120 VAC for J315, J325
models) at recommended
test points. See table at right
for a listing of recommended
test points.
Yes
Pump has thermally
shut down. See
page 43.
Call an electrician to
No
fix problem.
This is caused by
insufficient wiring or
the pump drawing
No
too much current.
Contact Jacuzzi
Premium Technical
Support.
No
Replace circuit
board.
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
Circuit Board Illustrations
A. 2002+ Protech LED Models (Page 50-
51)
41