pump. If it detects the draw is below what it expects, it’s a good indication
your circulation pump or 2 speed pump is failing.
FC Board sees cold water
FIX: Means Freeze Control. It’s automatic. It comes on when water goes
below 60 degrees (such as when you change the water). Its telling you
the water is cold and it will turn all pumps on periodically to avoid the spa
from freezing. When the spa heats, this feature will automatically cancel.
It’s a nice feature to protect your spa from freezing if the heater fails.
Ht High Temperature
FIX: Means the water has reached at least 110 degrees and will shut all
jets off. If you have an air blower, it will come on to try to cool the spa.
Once the spa cools the unit will come back on. (not uncommon in
summer heat)
Oht Over Heat Error
FIX: Water has reached 120 and the spa shuts completely down. It will
not reset until you power off and then back on.
OPTIONAL MODES ON TOPSIDE
ECON: Turns off heater but jets and light work.
STAN: Standard mode. All functions work.
The 6600-287 Board:
SN1 High Limit Sensor Failure.
FIX: Replace sensor (might be a board failure but more likely the
sensor). Most board models use a high limit disc. It is located pressed
against the heater when you open the control box cover. With power out,
remove the 2 nuts holding the disc against the heater. Swap disc. Swap
wires. Done.
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