Jacuzzi Premium J-325 Troubleshooting Manual page 28

8.1B No Heat Or Not Enough Heat
• Symptoms: Circulation pump (heating pump) not turning, panel heat indicator not lit,
panel is fl ashing FL2.
Standard Troubleshooting Approach
Pull wire off flow
switch. Does the
FL2 error message
go away?
Yes
Turn off power to hot
tub. Test flow switch
with ohmmeter for
continuity across
switch terminals (fig.
D-E). Does meter
read continuity
(0)?
Yes
Remove flow switch
and inspect for
debris interference.
Remove debris if
present. Test switch
for continuity (0)
when closed and for
infinite when open
(fig. E). Does switch
operate correctly?
Yes
Install switch making
sure flow arrow
points in direction of
flow and switch
doesn't bottom in
fitting (fig. F). Retest
system.
Is wire shorted?
No
Yes
Replace wire.
Make sure wire is
No
not shorted when
installed on switch.
No Replace flow switch.
No
Replace circuit
board.
Pump
off
Infinite
Open
Infinite
Arrows not
aligned
Orientation
28
Fig. D
Pump
on
Continuity 0
Fig. E
Closed
Continuity 0
Fig. F
Arrows
aligned
OK
Pipe End
Orientation
View