Operating instructions

SnA or
SA
Hot tub is shut down. The sensor
that is plugged into the sensor “A”
jack is not working.
If the problem persists, contact your store. (May appear temporarily in an
overheat situation and disappear when heater cools.)
Snb or
Sb
Hot tub is shut down. The sensor
that is plugged into the sensor “B”
jack is not working.
If the problem persists, contact your store for service.
SnS or
Sn
Sensors are out of balance. If this is
alternating with the temperature, it
may just be a temporary condition.
If the display shows only this
message (periodically blinking), The
hot tub is shut down.
If problem persists, contact your store for service. Follow action required for
“SnA”.
HFL or
HL
A substantial difference between the
temperature sensors was detected.
This could indicate a flow problem.
Check water level in hot tub. Refill if necessary. If the water level is okay, make
sure the pumps have been primed. If problem persists try these solutions:
Microfilter is dirty: Turn power to tub off at GFCI or power disconnect, remove
Microfilter and clean or replace.
Air lock in system: Locate air bleed thumb screws and open partially to
release air in piping. Debris in Hush Pump™: Call your store for service
or shut down system, close all knife valves and remove face plate from Hush
Pump™ to remove debris. Circulation pump failed or frozen: If freezing
suspected, place trouble light or space heater around equipment to thaw
out pump and external piping and call your store for service.
LF
Persistent low flow problems. (Display
on the fifth occurrence of the “HFL”
message within 24 hours. Heater
is shut down, but the other hot tub
functions continue to operate normally.
Follow action required for the “HFL” message. Heating capacity of the hot
tub will not reset automatically; you may press any button to reset.
dr
Possible inadequate water flow
detected in heater after 7 second
heater test.
Check that all knife valves are open then, check water level in hot tub. Refill
if necessary. If the water level is okay, make sure the pumps have been
primed. Press any button to reset.
drY or
dY
Confirmed inadequate water flow
detected after 7 second heater
tests.
Use same action as DR. Make sure circulation pump is running. If
circulating pump is not running call your store for service.
Pr
When your hot tub is first actuated,
it will go into priming mode.
The Priming Mode will last up to 4 minutes and then the hot tub will begin
to heat and maintain water temperature in Standard Mode.
--F / --C
Temperature unknown. After the pump has been running for 2 minutes, the temperature will be displayed.
Std/ St
STANDARD
The hot tub is operating in
Standard Mode.
No action required. Refer to Heating modes page to change this mode.
Ecn/
Ec
ECONOMY
The hot tub is operating in
Economy mode.
No action required. Refer to Heating modes page to change this mode.
SLP/
SL
SLEEP
The hot tub is operating in sleep heating
mode.
No action required. Refer to Heating modes page to change this mode.
Diagnostic Display Messages & Trouble Shooting Guide, cont’d.
26