D No Heat Or Not Enough Heat (All Models) - Jacuzzi LED Series Manual

8.1D No Heat or Not Enough Heat (All Models)

• Symptoms: Low speed pump 1 or circulation pump (heating pump) is turning, panel heat
indicator not lit, panel is flashing FL1.
Standard Troubleshooting Approach
Is the low speed pump
or circulation pump (Heat
Pump) moving water?
Yes
Verify hot tub is in
standard filtration mode
(page 7) then perform
step below.
Remove switch wires
from board. Increase set
temperature to initiate a
heat call, then jumper flow
switch wires together (Fig.
9-10). Does heat indicator
appear and FL1 error
message disappear?
Yes
Test flow or pressure
switch with ohmmeter for
continuity (0Ω) across
switch terminals (Fig. 11)
Does meter read continuity
(0Ω) with pump on?
Yes
Clean connectors between
flow cable and switch.
DANGER: Electrical Shock Hazard Exists!
High Voltage Present on Circuit Board. Use
Extreme Caution while Servicing Circuit Board.
No
1. Remove filter and
allow air to bleed
out of cartridge.
2. Check for proper
water level.
3. Check for clogged/
excessively dirty
filter.
4. Check for blockage
at filter wall fitting.
5. Check for sticking
weir.
6. Is pump moving
water?
Yes
Remove flow or pressure
switch connector from
circuit board test point
No
23 (Fig. 10). Place
jumper across exposed
connector pins*. Does
heat indicator appear
and FL1 error message
disappear?
Yes
Repair or replace flow or
pressure sensor cable.
Remove flow or pressure
No
switch and inspect
for debris blockage.
Remove blockage or
replace switch.
Re-install flow or
pressure switch. Install
flow switch with arrow
pointing in direction of
flow. Make sure magnet
arm doesn't bottom out
in fitting (Fig. 12).
No Models with a circulation
pump:
See Section 8.12 (pg.
40)
Models without a
circulation pump:
See Section 8.7 (pg. 35)
Replace circuit board.
No
*Lightly scrape
contact pins at
point 23 with a
razor blade or
sandpaper to re-
move conformal
coating or oxida-
tion form contact
surface.
Fig. 9
Temporarily Jumper
Flow or Pressure
Switch Cable Wires
Together as Shown.
Fig. 10
22
23
Flow
Temporarily
Cable
Short Pins
with Jumper
#6560-864
Fig. 11
DCV ACV
OFF
1000 750
200
200
20
DCV ACV
2000m
OFF
1000 750 200m
200 DCA
200
20 200µ 2000k
2000m 2000µ 200k
200m 20m 20k
2000
200m 200 +
Ω
2000k
10A
200k
20k
2000
200 +
Ω
Closed
Open
Pump on
Pump off
Infinite Ω Continuity 0 Ω
DCV ACV
OFF
1000 750
200 DCA
200
20 200µ
2000m 2000µ
200m 20m
200m
2000k
10A
200k
20k
2000 200 +
Ω
Fig. 12
Arrows
correct
Arrows
not
aligned
aligned
incorrect
Pipe
Incorrect Correct
Orientation Orientation End View
Correct
Orientation
DCA
200µ
2000µ
20m
200m
10A
25