Operating instructions

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Problem: A significant difference between temperature sensors has been
detected. This could indicate a flow problem.
Solution: Check water level in spa. Refill if necessary. If water level is okay,
make sure the pumps have been primed. If problem persists, contact your
dealer or service organization.
Problem: Persistent low flow problems. (Displays on the fifth occurrence of
“HFL” message within 24 hours.) Heater is shut down, but other spa func-
tions continue to run normally.
Solution: Follow the action required for “HFL” message. Heating capability
of the spa will not reset automatically; you may press any button to reset.
Problem: Possible inadequate water, poor low, or air bubbles are detected
in the heater. Spa is shut down for 15 minutes.
Solution: Check water level in spa. Refill if necessary. If water level is okay,
make sure the pumps have been primed. Press any button to reset, or this
message will automatically reset within 15 minutes. If problem persists,
contact your dealer or service organization.
Problem: Inadequate water detected in heater. (Displays on third occur-
rence of “dr” message. Spa is shut down.
Solution: Follow action required for “dr” message. Spa will not automati-
cally reset. Press any button to reset.
On a fresh fill one or both of your pumps may be air locked, refer to page
13 for removing an air lock.
WARNING! SHOCK HAZARD! NO USER SERVICEABLE PARTS.
Do not attempt to service the control system. Contact your dealer or service
organization for assistance. Follow all owner’s manual power connection
instructions. Installation must be performed by a licensed electrician and
all grounding connections must be properly installed.