21
8.1E No Heat or Not Enough Heat (All Models)
• Symptoms: Circulation pump (heating pump) is turning, panel heat indicator not lit,
panel is NOT ashing FL1.
Standard Troubleshooting Approach
Put hot tub in primary
ltration mode (pg. 8).
Set temperature high
enough to initiated a heat
call. Remove power to hot
tub then plug in a spare
control panel. Turn power
on. Does indicator work
now?
Replace control panel.
Verify that ow switch
padde is not bouncing and
address possible restriction
problems.
Jump out ow switch pins at
board. Does heat indicator
come on?
Replace circuit board.
No
No
Yes
Yes
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