Circulation Pump Not Working - Jacuzzi LED Series Troubleshooting Manual

8.12 Circulation Pump Not Working

The circulation pump works as follows:
• 2014+ J335/J345/J355/J365/J375/J385 circ pump runs 8 hrs (default)
• 2014+ J315/J325 24 hrs (default)
Note: See Service Bulletin page 33
The circulation pump should be running unless "summer logic" is activated. Verify "summer logic" is
not activated before starting.
The circulation pump is preset to run for a specific filter cycle, two minutes after power up. If the circu-
lation pump is not running, turn power off to the spa then back on and wait two minutes for the cycle
to begin. Or raise the temperature to initiate a heat call.
Diagnostic Tools: Clamp-on Ammeter, Voltmeter
Suggested Spare Parts: Circuit Board, Circulation Pump
Standard Troubleshooting Approach
Refer to pages 43-46 for testing points.
Is 240 VAC (120 VAC for
J-315 and J-325) present
at pump output? Test
Points 14 and 15.
Yes
Is there current draw (0.5
Amp)? Check with clamp-
on ammeter.
Yes
Current draw is proof
that circulation pump
is working. Read steps
above to make sure
circulation pump should
be on*.
*Note: If circulation pump is running but there is no flow, check for an excessively dirty filter, an air
lock, blockage in the plumbing, debris in the pump, or a broken pump impeller.
DANGER: Electrical Shock Hazard Exists!
High Voltage Present on Circuit Board. Use
Extreme Caution while Servicing Circuit Board.
No
Make sure circulation
pump should be on. If
pump should be on and
there is no voltage at
test points change circuit
board.
Check connection
No
between circuit board
and circulation pump. If
connection is OK, replace
pump.
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