Jacuzzi Premium J-325 Troubleshooting Manual page 30

8.1D No Heat Or Not Enough Heat
• Symptoms: Circulation pump (heating pump) is turning, panel heat indicator not lit,
panel is fl ashing FL1.
Standard Troubleshooting Approach
Is the circulation pump
(Heat Pump) moving
water?
Yes
Verify hot tub is in
standard filtration mode
(page 21). Remove flow
wires from switch.
Increase set temperature
to Initiate a heat call, then
jumper flow switch wires
together (see fig. G).
Does heat indicator
appear and FL1 error
message disappear?
Yes
Test flow switch with
ohmmeter for continuity (0)
across switch terminals
(fig. I). Does meter read
continuity
(0) with pump on?
Yes
Clean connectors between
flow cable and switch.
*Lightly scrape contact pins at
point 11 with a razor blade or
sandpaper to remove conformal
coating or oxidation from contact
surface.
Danger: Electrical Shock Hazard Exists!
High Voltage Present On Circuit Board. Use Ex-
treme Caution While Servicing Circuit Board.
1. Remove filter and
No
allow air to bleed out
of cartridge.
2. Check for proper
water level.
3. Check for clogged /
excessively dirty
filter.
4. Is pump moving
water?
Yes
Remove flow switch
connector from circuit
board at point 11 (fig. H).
No
Place jumper across
exposed connector pins*.
Does heat indicator
appear and FL1 error
message disappear?
Yes
Repair or replace flow
sensor cable.
Remove flow switch and
No
inspect for debris
blockage. Remove
blockage or replace
switch. Install flow
switch with arrow
pointing in direction of
flow. Make sure magnet
arm doesn't bottom out
in fitting (fig. J).
No
See section 8.10 (pg. 42)
Replace circuit board.
No
Temporarily
Short Pins
with Jumper
#6560-864
Incorrect
Orientation
30
fig. G
Temporarily Jumper
Flow Switch Cable
Wires Together as Shown.
fig. H
22
23
fig. I
Open
Closed
Pump off
Pump on
Infinite Continuity 0
fig. J
Arrows
Arrows
not
aligned
aligned
incorrect
Correct
End View
Orientation
Flow
Cable
correct
Pipe