39
8.11 Jets Pump Runs and Quits During Jet Mode
This is usually a problem of pump overheating. The pump motor incorporates a thermal cutout
switch 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:
Circuit Board, Jets Pump
Standard Troubleshooting Approach
This applies to 2011-2013 J300 Models not 2014+
Refer to pages 50-53 for testing points.
Press JETS button.
Does motor make a
“laboring” sound?
Is voltage from circuit board
to pump correct after pump
quits? Check for 240 VAC
(120 VAC for convertible
J-210, J-315, J-325 models)
at recommended test points.
See table at right for a listing
of recommended test points.
Replace circuit
board
Is there sufficient
voltage connected
to hot tub. Check for
240 VAC ±10% (or
120 VAC ±10% for
convertible J-210,
J-315, J-325 models)
at TB1 test points 1
and 2.
Call an electrician to
fix problem.
Check voltage with
pump running. Is
the voltage 240 VAC
±10% (or 120 VAC
±10% for convertible
models) at test
points 1 and 2.
Replace pump
This is caused by
insufficient wiring
or the pump motor
drawing too much
current. Contact
Technical Support.
Pump has thermally shut
No
Yes
No
No
No
Yes
Yes
Yes
Recommended Test Points
All 1-Pump (2-speed) models
• Low Speed Pump 1 - test point 5 and 6.
• High Speed Pump 1 - test point 5 and 7.
All two pump models
• Low Speed Pump 1 - test point 5 and 6.
• High Speed Pump 1 - test point 5 and 7.
• High Speed Pump 2 - test point 8 and 9.
DANGER: Electrical Shock Hazard Exists!
High Voltage Present on Circuit Board. Use
Extreme Caution while Servicing Circuit Board.
