19
8.1C No Heat or Not Enough Heat (All Models)
• Symptoms: Circulation pump (heating pump) not turning, panel heat indicator not lit,
panel is ashing FL1.
Standard Troubleshooting Approach
Is there correct voltage coming to the
hot tub at TB1? Test point 1 and 2. See
page 43-46
240 VAC, ± 10%, or (120 VAC, ± 10%
for convertible models).
Put hot tub in a valid Primary Filtration
Cycle, PF1-PF8 (page 8). Set
temperature high enough to initiate a
heat call.
Is voltage from circuit board to
circulation pump ok? Test point 14 and
15. (See page 43-46).
Note: Refer to voltage and current
charts on appendix pages 36-38
for expected voltage/current readings.
Is connection ok from circuit board to
pump?
Replace pump.
Repair connection.
Replace circuit
board.
Call an electrician.
No
Yes
Yes
Yes
No
No
DANGER: Electrical Shock Hazard Exists!
High Voltage Present on Circuit Board. Use
Extreme Caution while Servicing Circuit Board.
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