Pump Runs And Quits During Jet Mode - Jacuzzi J-315 Manual

. Pump Runs And Quits During Jet Mode

This is usually a problem of the pump overheating. The pump motor incorporates a thermal 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 motor make a
"laboring" sound?
Yes
Is there sufficient
voltage connected to
hot tub. Check for
240 VAC ±10% (or
120 VAC ±10% for
convertible models)
Yes
Check voltage with
pump running. Is
the voltage 240 VAC
±10% (or 120 VAC
±10% for convertible
models) at test points
18 and 19.
Yes
Replace pump.
No
Is voltage from circuit board
to pump correct after pump
quits? Check for 240 VAC
(120 VAC for convertible J-
315 models) at recommended
test points.
Yes
Pump has thermally
shut down. See page
43.
No
Call an electrician to
fix problem.
This is caused by
insufficient wiring
or the pump motor
No
drawing too much
current. Contrast
Jacuzzi Hot Tubs
Technical Support.
No
Replace circuit board.
Danger: Electrical Shock Hazard Exists!
High Voltage Present On Circuit Board. Use Extreme
Caution While Servicing Circuit Board.
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