ISPA PORTABLE SPA 2009 User manual

LTR20091084, Rev. A
9/1/09
Preliminary

2009 iSpa Owner’s Manual
LTR20091084, Rev. A
ii
Copyright 2009 LMS, Inc. All rights reserved. Duplication without
written consent is strictly prohibited.
Due to continuous improvement programs, all models, operation,
and/or specications are subject to change without prior notice.
Preparing for Your New Portable Spa
Planning the Best Location ...............4
Preparing a Good Foundation .............5
120 Volt Electrical Installation ............5
240 Volt Electrical Installation ............6
GFCI Wiring Diagram ...................8
Filling and Powering Up Your Portable Spa . 10
Operating Your Spa
Electronic Control Operation ............13
Diagnostic Messages ...................16
Jets.................................20
Clear Water Plan
The Key to Clear Water .................22
Testing and Adjusting Spa Water .........24
Sanitation............................25
Cleaning the Filter .....................28
Cleaning the Filter Basket...............29
Bather Load . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Starting the Spa with Fresh Water ........31
Troubleshooting Water Clarity Problems ...32
Maintenance Schedule .................34
Cleaning and Maintenance
Draining Your Portable Spa .............35
Winterizing (Cold Climate Draining) ......36
Covering Your Spa .....................37
Cleaning the Shell .....................37
Cleaning the Cover ....................39
Appendix
Replacement Parts ....................40
2009 Warranty........................41

Read This First!
1
READ AND FOLLOW ALL
INSTRUCTIONS.
WARNING:
To reduce the risk of injury, do not permit children to
use this product unless they are closely supervised at
all times.
DANGER -- Risk of accidental drowning:
Do not allow children to be in or around a spa unless a
responsible adult supervises them. Keep the spa cover
on and locked when not in use. See instructions en-
closed with your cover for locking procedures.
DANGER -- Risk of injury:
The suction ttings in this spa are sized to match the
specic water ow created by the pump. Should the
need arise to replace the suction ttings, or the pump,
be sure the ow rates are compatible.
Never operate the spa if the suction tting or lter bas-
kets are broken or missing. Never replace a suction
tting with one that is rated less than the ow rate
marked on the original suction tting.
DANGER -- Risk of electric shock:
Install the spa at least 5 feet (1.5 meters) from all met-
al surfaces. As an alternative, a spa may be installed
within 5 feet of metal surfaces if each metal surface is
permanently bonded by a minimum #8 AWG solid cop-
per conductor to the outside of the spa’s control box.
DANGER -- Risk of electric shock:
Do not permit any external electrical appliances, such
as lights, telephones, radios, televisions, and etc., with-
in ve feet (1.5 meters) of the spa. Never attempt to
operate any electrical device from inside the spa.
WARNING -- To reduce the risk of injury:
The spa water should never exceed 104˚F (40˚C). Wa-
ter temperatures between 100˚F (38˚C) and 104˚F
(40˚C) are considered safe for a healthy adult. Lower
water temperatures are recommended for young chil-
dren and when spa use exceeds 10 minutes.
High water temperatures have a high potential for caus-
ing fetal damage during pregnancy. Women who are
pregnant, or who think they are pregnant, should al-
ways check with their physician prior to spa usage.

2009 iSpa Owner’s Manual
LTR20091084, Rev. A
Read This First!
2
The use of alcohol, drugs or medication before or dur-
ing spa use may lead to unconsciousness, with the pos-
sibility of drowning.
Persons suffering from obesity, a medical history of
heart disease, low or high blood pressure, circulatory
system problems or diabetes should consult a physician
before using the spa.
Persons using medications should consult a physician
before using the spa since some medications may in-
duce drowsiness while others may affect heart rate,
blood pressure and circulation.
HYPERTHERMIA DANGER:
Prolonged exposure to hot air or water can induce hy-
perthermia. Hyperthermia occurs when the internal
temperature of the body reaches a level 3˚F to 6˚F
above the normal body temperature of 98.6˚F (or 2˚C
to 4˚C above 37˚C). While hyperthermia has many
health benets, it is important not to allow your body’s
core temperature to rise above 103˚F (39.5˚C).
Symptoms of excessive hyperthermia include dizziness,
lethargy, drowsiness and fainting. The effects of exces-
sive hyperthermia may include:
Failure to perceive heat•
Failure to recognize the need to exit spa or hot tub•
Unawareness of impending hazard•
Fetal damage in pregnant women•
Physical inability to exit the spa•
Unconsciousness•
WARNING: The use of alcohol, drugs, or medication
can greatly increase the risk of fatal hyperthermia.
DANGER -- Risk of electric shock:
Replace a damaged power cord immediately.•
Do not bury the power cord.•
Connect to a grounded, grounding-type receptacle•
only.
WARNING: People with infectious diseases should not
use a spa or hot tub.
WARNING: To avoid injury, exercise care when enter-
ing or exiting the spa or hot tub.

Read This First!
3
WARNING: Do not use drugs or alcohol before or dur-
ing the use of a spa or hot tub to avoid unconsciousness
and possible drowning.
WARNING: Do not use a spa or hot tub immediately
following strenuous exercise.
WARNING: Prolonged immersion in a spa or hot tub
may be injurious to your health.
CAUTION: Maintain water chemistry in accordance
with manufacturer’s instructions.
SAVE THESE INSTRUCTIONS.

2009 iSpa Owner’s Manual
LTR20091084, Rev. A
Preparing forYour New Portable Spa
4
Most cities and counties require permits for exterior
construction and electrical circuits. In addition, some
communities have codes requiring residential barriers
such as fencing and/or self-closing gates on property
to prevent unsupervised access to the property by chil-
dren. Your dealer can provide information on which per-
mits may be required and how to obtain them prior to
the delivery of your spa.
Planning the Best Location
Safety First
Do not place your spa within 10 feet (3 m) of overhead
power lines.
Consider How You Will Use Your Spa
How you intend to use your spa will help you determine
where you should position it. For example, will you use
your spa for recreational or therapeutic purposes? If
your spa is mainly used for family recreation, be sure
to leave plenty of room around it for activity. If you will
use it for relaxation and therapy, you will probably want
to create a specic mood around it.
Plan for Your Environment
If you live in a region where it snows in the winter or
rains frequently, place the spa near a house entry. By
doing this, you will have a place to change clothes and
not be uncomfortable.
Consider Your Privacy
In a cold-weather climate, bare trees won’t provide
much privacy. Think of your spa’s surroundings during
all seasons to determine your best privacy options. Con-
sider the view of your neighbors as well when you plan
the location of your spa.
Provide a View with Your Spa
Think about the direction you will be facing when sitting
in your spa. Do you have a special landscaped area in
your yard that you nd enjoyable? Perhaps there is an
area that catches a soothing breeze during the day or a
lovely sunset in the evening.
Keep Your Spa Clean
In planning your spa’s location, consider a location
where the path to and from the house can be kept clean
and free of debris.
Prevent dirt and contaminants from being tracked into
your spa by placing a foot mat at the spa’s entrance
where the bathers can clean their feet before entering
your spa.

Preparing forYour New Portable Spa
5
Allow for Service Access
Many people choose to install a decorative structure
around their spa. If you are installing your spa with
any type of structure on the outside, such as a gazebo,
remember to allow access for service. It is always best
to design special installations so that the spa can still be
moved, or lifted off the ground.
Preparing a Good Foundation
Damage caused by inadequate or improper foun-
dation support is not covered by the warranty.
It is the responsibility of the spa owner to provide a
proper foundation for the spa.
We strongly recommended that you have a qualied, li-
censed contractor prepare the foundation for your spa.
Place the spa on a level concrete slab not less than 3”
/ 8 cm thick. If you are installing the spa indoors, pay
close attention to the ooring beneath it. Choose oor-
ing that will not be damaged or stained.
If you are installing your spa on an elevated wood
deck or other structure, consult a structural engineer
or a contractor to ensure the structure will support the
weight of 150 pounds per square foot.
120 Volt Electrical Installa-
tion
The iSpa can operate on either 120V or 240V power.
Although its default factory conguration is 240V, it can
be converted to 120V.
When congured as a 120V appliance, it is a cord-con-
nected spa with a pump heater, lighting xture, and spa
side control. The operating power is 110V AC.
A licensed electrician may be required to upgrade your
standard receptacle and/or circuit breaker. Always fol-
low applicable local, state and federal codes and guide-
lines.
The spa is equipped with a 15 amp GFCI cord and plug
kit.
Plug the spa into a dedicated electrical line with a 15
amp breaker.
Always use a weatherproof-covered receptacle. Recep-
tacle shall be located not less than 5 feet (1.5 m) from
and not exceeding 10 feet (3.0 m) from the inside wall
of the spa (NEC 680.43(A)).

2009 iSpa Owner’s Manual
LTR20091084, Rev. A
Preparing forYour New Portable Spa
6
Do not use extension cords. Using an extension cord
will void your warranty.
Do not bury the power cord. If your cord becomes dam-
aged, replace it before next usage.
If you need to replace your cord, replace it with a 15
amp GFCI connection. The cord may not be longer than
15 feet (4.6 m).
Testing the GFCI
Test the GFCI plug prior to rst use and periodically
when the spa is powered. To test the GFCI plug ver-
sion, follow these instructions. (Spa should already be
plugged in and operational.)
Press the TEST button on the GFCI. The GFCI will 1.
trip and the spa will stop operating.
Press the RESET button on the GFCI. The GFCI will 2.
reset and the spa will turn back on.
The spa is now safe to use.
If the GFCI trips while the spa is in use, press the RE-
SET button. If the GFCI does not reset, unplug the spa
and call your local dealer for service. DO NOT USE THE
SPA!
240 Volt Electrical Installa-
tion
All 240V spas must be permanently connected (hard-
wired) to the power supply. Use one 50 amp GFCI with
four #8 AWG copper wires. See the wiring diagram on
page 8.
These instructions describe the only acceptable
electrical wiring procedure. Spas wired in any
other way will void your warranty and may re-
sult in serious injury.
When installed in the United States, the electrical wir-
ing of this spa must meet the requirements of National
Electric Code, ANSI/NFPA 70-2008 and any applicable
local, state, and federal codes.
The electrical circuit must be installed by an elec-
trical contractor and approved by a local building
or electrical inspector.
Failure to comply with state and local codes may
result in re or personal injury and will be the
sole responsibility of the spa owner.

Preparing forYour New Portable Spa
7
GFCI and Wiring Requirements
The power supplied to the spa must be on a dedicated
GFCI protected circuit as required by ANSI/NFPA 70
with no other appliances or lights sharing the power.
Use copper wire with THHN insulation. Do not use alu-
minum wire.
When NEC requires the use of wires larger than #6
AWG, install a junction box near the spa and use #6
AWG wire between the junction box and the spa.
Wire runs over 85 feet must increase wire gauge to
the next lower number. For example: A normal 50 amp
GFCI with four #8 AWG Copper wires run over 85 feet
would require you to go to four #6 AWG copper wires.
Read and follow the heater manufacturer’s safety and
installation instructions prior to installation and opera-
tion. Incorrect installation may damage the heater and
void its warranty.
Testing the GFCI Breaker
Test the GFCI breaker prior to rst use and periodically
when the spa is powered. To test the GFCI breaker fol-
low these instructions (spa should be operating):
Press the TEST button on the GFCI. The GFCI will 1.
trip and the spa will shut off.
Reset the GFCI breaker by switching the breaker 2.
to the full OFF position, wait a moment, then turn
the breaker back on. The spa should have power
again.

2009 iSpa Owner’s Manual
LTR20091084, Rev. A
Preparing forYour New Portable Spa
8
GFCI Wiring Diagram

Preparing forYour New Portable Spa
9

2009 iSpa Owner’s Manual
LTR20091084, Rev. A
Preparing forYour New Portable Spa
10
Once the spa has been placed on an approved sur-1.
face and has been correctly wired by a licensed
electrician, inspect all plumbing connections in the
equipment area of your spa. Ensure that these con-
nections are secure and that they did not loosen
during shipment.
If equipped, open all gate valves in the equipment2.
area. Before operating the spa, these valves must
be in the up or “open” position.
Never ll your spa with
soft water.
Soft water makes it impossible to
maintain the proper water chemistry
and may cause the water to foam, which will ulti-
mately harm the nish of the spa and void your war-
ranty.
VERY IMPORTANT!
Never run the spa with the gate valves
closed or without water circulating for
long periods of time. Be careful not to
over-tighten the plumbing ttings.
Remove the cartridge from lter canister.3.
Place a garden hose in the lter canister and ll 4.
your spa with regular tap water about six inch-
es from the top.
VERY IMPORTANT!
Always ll the spa through the lter
canister! Failure to do so may cause air
to be trapped in the ltration system
and prevent the pumps from operating
properly.
Filling and Powering Up Your
Portable Spa

Preparing forYour New Portable Spa
11
Once the water is at the correct level and air is bled,6.
plug in the spa into a dedicated electrical outlet.
Note: When the power is turned on to the spa,
the controls will perform a diagnostic check for ap-
proximately ve minutes. When the diagnostic is
complete, the spa will automatically operate at l-
ter speed and continue heating until the spa water
temperature reaches the default temperature of
100˚F.
If no water is owing when the pump is running, 8.
there could be an air pocket at the suction side of
the pump. Shut off power to the spa and loosen
the pump union on the suction side of the pump
to bleed the air. When air is bled, turn power back
on.
Install the pre-soaked lters into the lter canister.9.
The spa is now ready for use.
Presoak the lters in spa water.5.
VERY IMPORTANT!
You must presoak the lters before in-
serting them in the lter canister. Dry
lters can allow air into the ltration
system which can cause pump failure.

2009 iSpa Owner’s Manual
LTR20091084, Rev. A
Preparing forYour New Portable Spa
12
Priming the Pump
New spa owners often have difculty the rst time they
start their spa and the pump fails to prime. This can be
frustrating, but these simple instructions can help you.
Sometimes air can become trapped in the pump while
lling the spa. You will know this has happened when
after you have lled and started the spa, the pump does
not seem to function. You will hear the pump operating,
but no water will be moving.
There are two methods of priming the pump.
The rst method will remove small air bubbles
trapped in the pump.
Turn the spa on and wait for PR (Priming Mode) to1.
appear on the topside display.
Press the JETS1 button to turn on the pump and let2.
it run for 10 seconds. The pump should be running
in low speed.
Press the JETS1 buttons again and let the pump run3.
in high speed for 10 seconds.
Press the JETS1 button again to turn off the pump.4.
The pump should be left in the off position for 10
to 15 seconds.
Repeat steps 1 through 4 until water is owing 5.
through all the jets and all air is removed from the
plumbing.
The pump will not work
properly while air is trapped in it.
Continuing to operate the pump
in this way will cause damage.
Whenever you ll your spa, ll it through
the lter canister and make sure all jets are
open.
Note: If you press the Temp button any
time during Priming Mode, it will exit that
mode and begin Standard Mode.

Preparing forYour New Portable Spa
13
The second method will remove a large air lock
within the pump.
Using a Phillips screwdriver, remove the front panel1.
from the spa and locate the pump.
While the spa is operating, turn the bleeder valve2.
counter clockwise with a small pair of pliers or a at
head screwdriver until the air has been released
from the pump.
If this is unsuccessful, loosen the white union nut3.
on side of the pump with channel locks. When air
is bled out, tighten the nut and set the pump on
high speed.

2009 iSpa Owner’s Manual
LTR20091084, Rev. A
OperatingYour Spa
14
Electronic Control Operation
Initial Start up
When rst powered up, your spa will perform a self-
diagnostic check and go into priming mode. The topside
will display PR to indicate this. Priming mode will be
active for less than ve minutes.
Sometimes the pump fails to prime, especially when
spa owners do not ll their spas through the lter can-
ister. You can avoid priming problems by following these
steps during priming mode.
Press the JETS button to turn on the pump and let1.
it run for 10 seconds. The pump should be running
in low speed.
Press the JETS buttons again and let the pump run2.
in high speed for 10 seconds.
Press the JETS button again to turn off the pump.3.
The pump should be left in the off position for 10
to 15 seconds.
Repeat steps 1 through 4 until water is owing 4.
through all the jets and all air is removed from the
plumbing.
When the spa has nished priming, the heater will be
activated and the water temperature will be maintained
in standard mode. The spa will heat to 100°F (37.5°C)
at start up until the set temperature is changed as de-
scribed below.
Temperature Adjustment
(Range 80°F to 104°F, 26°C to 40°C)
The electronic control panel displays the actual water
temperature in degrees Fahrenheit. The displayed tem-
perature will only be current after the pump has been
running for at least two minutes.
To display the temperature that the spa is set to:
Press either the• Up or Down button. The tempera-
ture setting will ash.
While the display is ashing, each time you press •
the Up or Down button, the set temperature will
change up or down one degree.
Jets LightCool WarmWarm

OperatingYour Spa
15
Standard, Economy and Sleep Heating
Modes
Your new spa is equipped with a heating feature that
gives you complete control of the heating system. When
the spa is powered up, it will automatically start in stan-
dard heating mode.
St• will light briey on the main display. In this
mode, the heating system will automatically main-
tain the set spa temperature. In the economy-heat-
ing mode, the heating system will only activate dur-
ing ltration times.
Ec• will display solid if temperature is not current
and will alternate with spa temperature if measured
temperature is current.
Economy mode will heat the water to the set tem-•
perature while Sleep mode, indicated by a SL on
the main display, will also only activate the heater
during the ltering cycles but will only heat the wa-
ter to within 20°F (10°C) of the set temperature.
Like Economy mode, SL will display solid when
temperature is not current and will alternate with
actual temperature when it is current.
Switching Modes
Press either the• Up or Down button followed by
the Light button.
Press the same sequence to switch to the next•
mode.
Jets
Press the Jets button:
Once to activate low speed pump.•
Twice to activate high speed.•
Three times to turn pump off.•
Light
Press the Light button to turn on the light. Press it
once again to turn the light off. All optional lighting such
as the control panel light and cabinet perimeter lighting
is controlled by the Light button and will turn on and
off with the spa light.
Automatic Time outs
These features will automatically turn themselves off
during periods of continuous use:
Low speed pump After 2 hours•
High speed pumps After 15 minutes•
Spa light After 4 hours•

2009 iSpa Owner’s Manual
LTR20091084, Rev. A
OperatingYour Spa
16
Setting Filtration Cycles
Your spa is programmed to lter twice a day. The rst
cycle will begin 6 minutes after the spa is turned on
and the second cycle 12 hours later. The factory has
programmed the cycle to last for 2 hours but this can be
switched to 4, 6, or 8 hours depending on your require-
ments. The default lter time is two hours.
To set ltration time, turn off the power to the spa
at the time of day you would like one of the ltration
cycles to begin, then turn back on after 30 seconds.
When power has been restored, press either the Up or
Down button then the Jets button. Press either the
Up or Down button again to change the ltering cycle
duration. When desired duration is selected press the
Jets button to exit.
The low speed pump will run for the duration of the
ltering cycle and if an ozone system is installed it will
be activated. During ltering, FC will appear on the
main display.
Diagnostic Messages
Message Meaning Action Required
No message
on display
1) Spa temperature is unknown. 1) After pump has been running for 2 minutes tempera-
ture will be displayed.
2) Spa is in Economy or Sleep mode. 2) In Economy or Sleep mode, the pump may be off for
hours outside a lter cycle. If you wish to see the current
spa temperature, either switch to Standard mode or turn
Jets1 on for at least two minutes.
3) Power has been cut off to the spa. 3) The control panel will be disabled until power returns.
Spa settings and time of day will be preserved for 30
days with a battery back-up.
dr Insufcient water detected in heater. Spa
will be shut down for 15 minutes.
Check water level in spa. Rell if necessary. Make sure
pumps are been primed and lter cartridges are clean.
Press any button to reset or wait 15 minutes and spa will
automatically reset. If message spa does not reset, call
your dealer or service organization.
drY Insufcient water detected in heater. Spa
is shut down.
(Displays on third occurrence of dr mes-
sage.)
Follow directions for dr message and press any button to
reset spa. Spa will not automatically reset when dry or
dY is displayed.
Ec Indicates heater is in Economy Mode. None.
-- Temperature unknown After the pump has been running for two minutes, the
temperature will be displayed.
HFL A difference in readings between tem-
perature sensors has been detected
indicating a possible water ow problem.
Make sure spa is lled to proper level and that pumps
are primed and lter cartridges are clean. If message
does not reset, call your dealer or service organization.

OperatingYour Spa
17
Setting Filtration Cycles
Your spa is programmed to lter twice a day. The rst
cycle will begin 6 minutes after the spa is turned on
and the second cycle 12 hours later. The factory has
programmed the cycle to last for 2 hours but this can be
switched to 4, 6, or 8 hours depending on your require-
ments. The default lter time is two hours.
To set ltration time, turn off the power to the spa
at the time of day you would like one of the ltration
cycles to begin, then turn back on after 30 seconds.
When power has been restored, press either the Up or
Down button then the Jets button. Press either the
Up or Down button again to change the ltering cycle
duration. When desired duration is selected press the
Jets button to exit.
The low speed pump will run for the duration of the
ltering cycle and if an ozone system is installed it will
be activated. During ltering, FC will appear on the
main display.
Diagnostic Messages
Message Meaning Action Required
No message
on display
1) Spa temperature is unknown. 1) After pump has been running for 2 minutes tempera-
ture will be displayed.
2) Spa is in Economy or Sleep mode. 2) In Economy or Sleep mode, the pump may be off for
hours outside a lter cycle. If you wish to see the current
spa temperature, either switch to Standard mode or turn
Jets1 on for at least two minutes.
3) Power has been cut off to the spa. 3) The control panel will be disabled until power returns.
Spa settings and time of day will be preserved for 30
days with a battery back-up.
dr Insufcient water detected in heater. Spa
will be shut down for 15 minutes.
Check water level in spa. Rell if necessary. Make sure
pumps are been primed and lter cartridges are clean.
Press any button to reset or wait 15 minutes and spa will
automatically reset. If message spa does not reset, call
your dealer or service organization.
drY Insufcient water detected in heater. Spa
is shut down.
(Displays on third occurrence of dr mes-
sage.)
Follow directions for dr message and press any button to
reset spa. Spa will not automatically reset when dry or
dY is displayed.
Ec Indicates heater is in Economy Mode. None.
-- Temperature unknown After the pump has been running for two minutes, the
temperature will be displayed.
HFL A difference in readings between tem-
perature sensors has been detected
indicating a possible water ow problem.
Make sure spa is lled to proper level and that pumps
are primed and lter cartridges are clean. If message
does not reset, call your dealer or service organization.
Your new spa comes equipped with an electric heater.
Following the directions listed below will ensure the
most efcient operation:
NOTE: This method is only for spa usage under two
hours a week.
Keep the spa’s operating temperature 5˚F below •
the desired usage temperature when not in use.
One or two hours before use, set the tempera-
ture to the desired temperature.
If the spa usage exceeds two hours a week, the•
set temperature should remain at the desired us-
age temperature.
Allowing the water temperature to lower more than
10˚F below the desired usage temperature and re-
heating it prior to usage will cause the heater to op-
erate longer than it normally would maintaining the
desired temperature. Doing this will increase your op-
erating cost and makes your heater work more than
necessary.

2009 iSpa Owner’s Manual
LTR20091084, Rev. A
OperatingYour Spa
18
Message Meaning Action Required
ICE Potential freeze condition detected. No action required. The pumps and the blower will auto-
matically activate regardless of spa status.
LF Persistent low ow problems. Heater
is shut down, but other spa functions
continue to run normally. Displays on the
fth occurrence of the HL or HFL mes-
sage within 24 hours.
Follow action required for HL or HFL message. Heating
capacity of the spa will not reset automatically. Press any
button to reset.
OHS Overheat protection. The spa has shut
down. One of the sensors has detected
that the spa water is 110°F.
DO NOT ENTER THE WATER. Remove the spa cover and
allow water to cool. At 107°F, the spa should automati-
cally reset. If spa does not reset, shut off the power to
the spa and call your dealer or service organization.
OHH Overheat protection (spa is shutdown).
One sensor has detected 118˚F (48˚C)
at the heater.
DO NOT ENTER THE WATER!
Remove the spa cover and allow spa to cool below 107˚F
(42˚C). Press any button on the topside display to reset
spa. If spa will not reset after spa has cooled, turn
off power for approximately 30 seconds and then turn
power back on. If display message is repeated then shut
the power off to the spa and call your dealer or service
organization.
Pr When your spa is rst actuated, it will go
into priming mode.
The priming mode will last for up to four minutes and
then the spa will begin to heat and maintain the water
temperature in the Standard mode.
SL Indicates heater is in Sleep Mode. None.
SnA
Snb
Spa is shut down. The sensor that is
plugged into the sensor “A” or “B” jack is
not working.
If the problem persists, contact your dealer or service
organization. (May appear temporarily in an overheat
situation and disappear when the heater cools.)
SnS Sensors are out of balance.
If this is alternating with the tem-•
perature, it may just be a temporary
condition.
If the display shows only this mes-•
sage (periodically blinking), the spa is
shut down.
Contact your dealer or service organization.
ST Indicates heater is in Standard Mode. None.