29
8.1C No Heat Or Not Enough Heat
• Symptoms: Circulation pump (heating pump) not turning, panel heat indicator not lit, panel
is flashing FL1.
Standard Troubleshooting Approach
Note: Refer to the voltage and current charts on appendix page 47 for expected voltage/current readings.
Danger: Electrical Shock Hazard Exists!
High Voltage Present On Circuit Board. Use Extreme
Caution While Servicing Circuit Board.
Is there correct voltage
coming to the hot tub at
TB1?
240 VAC, ± 10%, or (120
VAC, ± 10% for convert-
ible models).
Put hot tub in standard
filtration mode (page
21). Set temperature
high enough to initiate a
heat call. Is voltage OK
from circuit board to low
speed pump or circulation
pump?
Is connection OK from
circuit board to pump?
Replace pump.
Repair connection.
Replace circuit board.
Call an electrician.
Yes
Yes
Yes
No
No
Circuit Board Illustrations
A. 2006+ LED Models (Page 50-51)
No
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