Coast Spas Oasis E7B User manual

2023
OASIS PACKAGE
Oasis E7B Oasis E8B Oasis E7L
Coast Spas Manufacturing
6315 202 Street | Langley, BC Canada V2Y 1N1
[e-mail] | www.coastspas.com

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DISCLAIMER: At the time of print, this manual is accurate in its information. Coast Spas reserves all the rights to
change/modify any spa designs and/or features without notification. To check on updates or for other information,
please visit www.coastspas.com
CONGRATULATIONS!
YOU’RE ALMOSTREADYTOENJOY YOUR NEW SPA!
Before you begin to enjoy your spa, please take a moment to submit your spa warranty. For registering your spa, you will need
the spa serial number. Picture below will help you locate the serial number on your spa.
You can register your spa by using below link.
https://coastspas.microsoftcrmportals.com/
FOR YOUR REFERENCE
Spa owner name:
Address:
Contact:
Spa Serial number:
Delivery Date:
Email:
Purchase Date:
Dealer Name:
Contact your spa selling dealer if you have any queries related to your Oasis spa. Coast Spas authorized dealers are trained
professionals who can assist you with spa parts, setup, operations, maintenance, and technical support.

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TABLE OF CONTENTS
Registering your Oasis spa
Page
2
Table of contents
Page
3
Basic information
Page
4
Important safety instructions
Page
5-6
Glossary of terms
Page
6-7
Preparation, set-up, and location of your new spa
Page
7
Oasis spa general layout
Page
8
Oasis Spa Collection
Page
9
Oasis Spa features and specifications
Page
10
Start Up Guide—Oasis Spas
Page
11
Oasis Spa Care Guide
Page
12-13
Basic installation and configuration guidelines: Electrical requirements
Page
13-14
Oasis Spa maintenance procedures
Page
15-17
Water clarity troubleshooting
Page
18
Troubleshooting guide
Page
19-20
Draining & Winterizing
Page
21
Oasis Spa Control Panel
Page
22-24
Balboa Wi-Fi
Page
25
Balboa Ultrazone operation
Page
26
Oasis Spa service log
Page
27-28

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! PLEASE READ YOUR ENTIRE OWNER’S MANUAL BEFORE SPA OPERATION !
Your new portable spa must be placed on a solid, level surface so that the weight is supported uniformly. We recommend
no less than a 3” (93 mm) thick concrete slab. Wood decking or balconies must be constructed to support 150 pounds per square
foot (730 kg/m2). Refer to the local and current building codes in your area. Should your new spa need to go through the gate or
space –restricted area, ensure you’ve communicated those limitations with your dealer to avoid delivery complications.
NOTE: Damage caused by alternate decking methods may void the spa warranty. Contact your dealer if you have any questions
regarding spa location and placement.
Your new spa has left the factory cleaned and polished and ready to begin operation after passing our many quality and
operational tests. However, depending on your location in the world, your spa may have spent days or even weeks in transit
before arriving at your home. Please ensure that before filling or operating your spa that you check all electrical and plumbing
connections are securely connected in the equipment area as they might have loosened during shipping. If any dirt has
accumulated, you will want to remove with a clean cloth or sponge using warm water.
BasicInformation
Water Care
Always maintain your water chemistry within the following
parameters.
pH
7.2 - 7.8
Chlorine
1.0 - 3.0 ppm
Bromine
2.0 - 5.0 ppm
Total Alkalinity
100 - 120 ppm
Calcium Hardness
150 - 250 ppm
Electrical
All self-contained spas use 120VAC or 240VAC electrical spa packs.
Surface
Transport
IMPORTANT: Caring for your water by ensuring proper
chemical usage is the single most important thing you can do
to keep your Oasis spa in good condition.
WARNING: Improper chemical usage and maintenance will
quickly lead to severe issues with your spa and can affect
the spa equipment, jets, pumps, and all other components in
contact with the spa water.
All spas are susceptible to damage from unbalanced spa
water.
120VAC: requires an isolated 15 Amp circuit breaker, an
isolated circuit with no other appliances or lights on the
circuit at any time. Extension cords are not to be used in
conjunction with the operations of the spa. Low voltage
damage could result, and this is not covered under
warranty. IMPORTANT: spas with 110V means that the jets
and heater will not work at the same time.
Note: All components must be 120V. No 240V components
allowable.
240VAC: Depending on the model of the spa, it will
require either a 40, 50, or 60 Amp dedicated circuit
breaker with the proper wire size (gauge) based on the
length of the run.
The electrical circuit must be installed by a certified
electrician and approved by a local building or electrical
inspector.

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IMPORTANT SAFETY INSTRUCTIONS
READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY
DANGER: Risk of Injury. The suction fittings in the Oasis spa are
sized to match the specific water flow created by the pump. Should
the need arise to replace the suction fittings or the pump, be sure
that the flow rates are compatible. Never operate the spa if the
suction fittings are broken or missing. Never replace a suction fitting
with one rated less than the flow rate marked on the original suction
fitting.
DANGER: Risk of Accidental Drowning. Do not allow children to be
in or around the spa without adult supervision. Keep the Oasis spa
cover on and locked when not in use. See instructions enclosed with
the cover for locking procedures.
DANGER: Risk of Electrical Shock. The electrical supply for this
product must include a suitably rated switch or circuit breaker to
open all ungrounded supply conductors to comply with section
422-20 of the National Electrical Code, ANSI/NFPA 70. The
disconnect must be readily accessible and visible to the spa
occupant but installed at least 5 feet (1.5 m) from the Oasis spa
water.
READ, FOLLOW AND SAVE THESE INSTRUCTIONS
a) A green colored terminal or a terminal marked G, Gr, Ground,
Grounding, or the symbol * is located inside the supply terminal
box or compartment. To reduce the risk of electric shock, this
terminal must be connected to the grounding means provided in
the electric supply service panel with a continuous copper wire
equivalent in size to the circuit conductors that supply this
equipment.
b) At least two lugs marked “Bonding Lugs” are provided on the
external surface or on the inside of the supply terminal box
compartment. To reduce the risk of electric shock, connect the
local common bonding grid around the spa to these terminals
with an insulated or bare copper conductor no smaller than No.
6 AWG.
c) All field-installed metal components such as rails, ladders,
drains or other similar hardware within 5 feet (1.5 m) of the spa
shall be bonded to the equipment grounding bus with copper
conductors no smaller than No. 6 AWG.
WARNING: To Reduce the Risk of Injury: The water in a spa should
never exceed 104 °F (40 °C). Water 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 children and
when spa use exceeds 10 minutes. Since excessive water
temperatures have a high potential for causing fetal damage
during the early months of pregnancy, pregnant or possibly
pregnant women should limit spa water temperatures to 100 °F
(38 °C). If pregnant, please consult your physician before using
a spa. Before entering the spa, the user should measure the
water temperature with an accurate thermometer since the
tolerance of water temperature regulating devices may vary as
much as +/- 5 °F (2 °C). Persons suffering from obesity or a
medical history of heart disease, low or high blood pressure,
circulatory system problems or diabetes should consult a
physician before using the spa.
CAUTION: Risk of Hyperthermia: Hyperthermia occurs when
the internal temperature of the body reaches a level several
degrees above the normal body temperature of 98.6 °F (37°C).
The symptoms of hyperthermia include drowsiness, lethargy,
and an increase in the internal temperature of the body.
Prolonged immersion in hot water may induce hyperthermia. A
description of the causes, symptoms, and effects of
hyperthermia are as follows:
• Unawareness of impending hazard;
• Failure to perceive heat;
• Failure to recognize the need to exit spa;
• Physical inability to exit spa;
• Fetal damage in pregnant women; and
• Unconsciousness and danger of drowning.
WARNING: Children should not use the spa without adult
supervision.
WARNING: Do not use the spa unless all suction guards are
installed to prevent body and hair entrapment.
WARNING: People with infectious diseases should not use a
spa.
WARNING: To avoid injury, exercise care when entering or
exiting the spa.
WARNING: Do not use drugs or alcohol before or during the
use of a spa to avoid unconsciousness and possible drowning.
The use of alcohol or drugs can greatly increase the risk of
fatal hyperthermia in spas.
WARNING: Pregnant or possibly pregnant women should
consult a physician before using a spa.
WARNING: Water temperature more than 38 °C (100 °F) may
be injurious to your health. Before entering the spa, measure
the water temperature with an accurate thermometer.

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DISCLAIMER: The pictures displayed above are for reference purpose only. Some parts may be different depending upon the spa
model.
WARNING: Do not use the spa immediately following strenuous
exercise.
WARNING: Prolonged immersion in a spa may be injurious to your
health.
WARNING: Do not permit electric appliances (such as lights,
telephone, radio, television, etc.) within 5 feet (1.5m) of the spa
unless such appliances are built-in by the manufacturer.
WARNING: People using medication and/or having an adverse
medical history should consult a physician before using a spa.
WARNING: To avoid injury, exercise care when entering or
exiting the spa.
WARNING: Maintain water chemistry in accordance with the
manufacturer’s instructions.
WARNING: The equipment and controls shall be located no
less than 1.5 meters horizontally from the spa.
CAUTION: Observe a reasonable time limit when using the spa.
Long exposures at higher temperatures can cause high body
temperature. Symptoms may include dizziness, nausea, fainting,
drowsiness, and reduced awareness. These effects could possibly
result in drowning.
CAUTION: Enter and exit the spa slowly. Wet surfaces can be
very slippery.
CAUTION: Proper chemical maintenance of spa water is
necessary to maintain safe water and prevent possible damage to
spa components. Maintain water chemistry in accordance with
manufacturer’s instructions.
CAUTION: Use the straps and clip tie downs to secure the cover
when not in use. This will help to discourage unsupervised children
from entering the spa and keep the spa cover secure in high-wind
conditions. There is no representation that the cover, clip tie-
downs, or actual locks will prevent access to the spa.
CAUTION: For exercise, the water should not exceed 90 °F (32 °
C).
GLOSSARY OF TERMS
AIR CONTROL: Mounted generally on the lip of the
spa, it induces warm air from the equipment
enclosure into the jet stream through venturi action.
WATER DIVERTER: The large diverter is used to
divert water to various seats in the spa.
FILTER AIR RELIEF VALVE: Located on top of
filter housing. Used to release air from the filter.
SKIMMER BLEEDER VALVE: Located inside the
skimmer area or on the spa wall, needs to be
loosened while filling the spa. This will help
eliminate air from being trapped in the spa
equipment.
OZONATOR: Available as an option. The ozonator
produces natural ozone through the Corona
Discharge process. Continuous use of an ozonator
can dramatically reduce sanitizer consumption.
CONTROL BOX (PACK): Basically the “heart” of
the spa. Power is distributed to any/all functions of
the spa: pumps, ozonator, LED lighting, heater
element, etc.
DIGITAL CONTROL PANEL beautifully recessed
into the spa acrylic and accented with a brushed
metal band that borders the edge of the
color touchscreen panel.
EQUIPMENT ENCLOSURE: An enclosure that
houses the control box, pump(s) and other electrical
components.
FILTER: The filter cleans the spa by passing water
through a filter cartridge where debris and impurities
are removed. Top load filter means the filter
cartridge is accessible through the top of the spa.
Front access skimmer means cartridge is accessed
through door of skimmer.

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FLOOR DRAIN: The floor drain is covered by a grate-
type cover and is utilized when draining the spa. It also
acts as the return for the ozonator. You will see
bubbles emitted from this drain, which is the result of
water mixing with the ozone output.
KNIFE VALVES: A white “T”-handled valve, same
functions as Gate valve (see above), except to open
them you pull up on handle.
HEATER: The electronically controlled heater raises
the temperature of the spa to the desired setting.
LEDs and their special lenses can be used to achieve
the desired mood lighting in the spa and spa jets.
SKIMMER: This is the rectangular outlet at the water
level. The skimmer removes surface debris from the
filter. The water level in the spa should be kept ½ to ¾
up on the skimmer for optimum operation.
SUCTION: During operation of the equipment, the
suction works in conjunction with the skimmer to draw
water from the bottom of the spa through the filter,
keeping the spa sparkling clean.
ADJUSTABLE CLUSTER JET: Our adjustable, high-
intensity hydrotherapy jet.
VOLCANO JET: high-output jet designed for foot and
leg massage.
PREPARATION, SET-UP, AND LOCATION
FOR YOUR NEW SPA:
•You want to keep in mind how you intend to use the spa
and plan the location accordingly.
•How close is the spa from the exit or entrance to your
house? (Consider the cold weather)
•Is the path to your spa clean of debris, sand, grass? (So
as not to track into the spa).
•Is there protection from wind, inclement weather?
•Can neighbors or passersby see the spa?
NOTE: Allow for service access: Many spa owners enjoy
placing their spa in a decorative enclosure or a deck. Keep in
mind that you need to have access to equipment for
maintenance and the spa should be able to be moved or lifted
without destroying the special enclosure or its surroundings. You
should discuss this with your dealer when designing the location.
Extension cords are not to be used in conjunction with the
operations of the spa. Low voltage damage could result, and this
is not covered by warranty.
DISCLAIMER: The pictures displayed above are for reference purpose only. Some parts may be different depending
upon the spa model.

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2
8
4
7
6
3
11
10
1
12
DISCLAIMER: At the time of print, this manual is accurate in its information. Coast Spas reserves all the rights
to change/modify any spa designs and/or features without notification. To check on updates or for other
information, please visit www.coastspas.com
DISCLAIMER: The pictures displayed above are for reference purpose only. Some parts may be different depending
upon the spa model.
OASIS SPA GENERAL LAYOUT
(Your Oasis spa may look different)
1.
Hydro Cyclonic Water Filtration System
9
2.
3.
Fusion Touchscreen Control Panel
Air Controls & Water Diverter
4.
Poly Jet
5
5.
Cluster Jets
6.
Floor Drain
7.
Suctions
8.
3” Multi-color Spa Light
9.
Skimmers
10.
Pillow
11.
Laminar Jets
13
12.
Neck Jets
13. Whirlpool/volcano jets

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DISCLAIMER: The pictures displayed above are for reference purpose only. Some parts may be different depending
upon the spa model.
OASIS PACKAGE COLLECTION
Oasis E7B Oasis E7L
Oasis E8B
DISCLAIMER: At the time of print, this manual is accurate in its information. Coast Spas reserves all the rights to
change/modify any spa designs and/or features without notification. To check on updates or for other information,
please visit www.coastspas.com

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DISCLAIMER: The pictures displayed above are for reference purpose only. Some parts may be different depending upon the
spa model.
DISCLAIMER: At the time of print, this manual is accurate in its information. Coast Spas reserves all the rights to change/modify
any spa designs and/or features without notification. To check on updates or for other information, please visit
www.coastspas.com
THE OASIS SPA PACKAGE INCLUDES
Choose model to see specific features and options. All features below may not be included with all models.
•34 Hydrotherapy Jets
•Vibrant Multi-Color Lighting Package
•Digital Control Panel
•50 Sq. ft. Pressurized Filtration System
•Laminar Streaming Water Ropes
•Sterling Marble or Snow-White Acrylic
•Ultra-Durable Vertical Synthetic Cabinet
•4" x 2" WeatherShield Cabinet
Series
Oasis
Oasis
Oasis
Model
E7B
E7L
E8B
Seating
6
5
5
Dims (cms)
212 x 212 x 92
212 x 212 x 92
234 x 234 x 92
Dims (in)
83.5 x 83.5 x 36
83.5 x 83.5 x 36
92 x 92 x 40
Capacity (l)
1268
1210
1666
Capacity (US gal)
335
320
440
Dry Wt (kg)
420
420
585
Dry Wt (lbs)
925
925
1291
Wet Wt (kg)
1688
1630
2251
Wet Wt (lbs)
3721
3594
4963

START UP GUIDE
Oasis Package
PREP FOR FILLING
! PLEASE READ ALL INSTRUCTIONS BELOW BEFORE FILLINGTHE SPA
Using a cloth and water, wipe away
any dirt/dust collected from
transport. Ensure all jets are open by
turning the face counterclockwise.
Ensure all plumbing and electrical
connections are securely connected
and tightened as they can come
loose during transit.
Ensure that any gate/knife valves
are fully open.
Remove the filter lock ring and lid.
Remove filter and take it out of the
plastic transport bag. Leave filter
canister open when filling.
Remove skimmer cavity grate cover
by sliding it upwards.
Loosen (do not remove) the air
bleeder valve located in the
skimmer cavity.
FILLING YOUR SPA
! DO NOT USE HOT WATERTO FILLYOUR SPA ! DO NOT USE WATER FROM A WATER SOFTENER
Place fill hose into open filter canister
and fill hot tub until water is 2/3 of the
way up the skimmer opening.
When filled all massage jets
(excluding neckjets) should be under
water.
Remove fill hose from filter canister. Put filter back into filter canister. Then
put back on the filter canister lid and
tighten locking ring.
POWERING UP YOUR SPA
Turn the power on at the main breaker. Turn pump 1 on high speed for
20secondsby pressingthe pump
icon twice.
Turn pump 1 off by pressing the
pump one icon once. Repeat steps 2
and 3 until air is removed from
pump 1 and water is coming from
jets.
Tighten the air bleeder valve located in
the skimmer cavity. Set your hot tub
temperature. Get readyto enjoy!
4
3
REPEAT
PUMP 1
2
press twice
20
seconds
PUMP 1
1
4
3
2
1
7
6
5
4
3
2
1

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SPACARE GUIDE
Your authorized dealer carries a wide variety of care and
maintenance products. For more information, please contact your
Dealer.
REQUIRED FILTER MAINTENANCE
Your new spa is equipped with a filter cartridge. To always ensure
maximum water quality, you should replace the filter cartridge
every six months, or earlier as necessary. The filter cartridge is
designed to be thrown away! Attempts to re-use the filter cartridge
may result in the re-release of unwanted particles back into the
spa.
PLEATCO DUAL COREFILTERS
Your spa comes with a premium filter. Most come equipped with a
Pleatco DualCore Filter, which does a better job of cleaning your
spa water than any other filter cartridge. The DualCore filter has
two layers of filtration media, the outer layer and the inner layer.
Both are engineered to remove different particles from your water.
The outer core is similar to a traditional filter which traps larger
debris, while the inner core filters the water for particles down to 3
microns in size. The inner core is easily removed and both filter
media can be cleaned.
Keeping your spa water clean and refreshing is extremely
important for your enjoyment of your spa. Our spas come with only
the best filters available in order to ensure your satisfaction.
REQUIRED WATER REPLACEMENT
You should replace the spas water every 3-6 months. The
frequency will depend on several variables including frequency of
use, number of bathers and attention paid to the water quality
maintenance. You will know it is time for a change when you can
no longer get the normal feel or sparkle to the water, even though
the key water balance measurements are all within the
recommended ranges.
•Proper water chemistry must be maintained. Your spa
pillows are easily and quickly damaged when exposed
to unbalanced spa water. If you suspect that your
chemicals may be unbalanced, remove your pillows
immediately until the water has been restored to the
suggested condition.
•Do not sit on the pillows.
•Do not pull on the pillows.
•Pillows should be cleaned using a soft cloth and mild
soap, then wiped with a conditioner. We recommend
that pillows be washed each time you drain your spa.
This Limited Warranty is void if failure is caused by accident,
acts of nature, acts of God, or other causes beyond the
control of CSMI. Neglect, misuse, and abuse include any
installation, operation, or maintenance of the spa other than
in accordance with the instructions contained in the owner’s
manual provided with the spa, including, but not limited to
damage caused by operation outside the range of 34 degrees
Fahrenheit and 116 degrees Fahrenheit or 1 degree Celsius
and 47 degrees Celsius.
Please be advised that the Spa Warranty will become void if
Coast Spas or any of its selling or servicing agents
determines that the spa has been exposed to Hydrogen
Peroxide, TriChlor or any substance using it as an ingredient
proven to be dangerous to the Spa. Any condition arising
from the use of Hydrogen Peroxide or TriChlor on the Spa is
an unwarrantable defect.
SPAINTERIOR
Your spa has a fiberglass reinforced acrylic shell. Generally,
dirt and stains will not adhere to the surface. To properly
clean the surface, we recommend wiping it with a soft damp
cloth (or sponge) using a low sudsing household soap or
liquid detergent and rinsing thoroughly with fresh water.
Stubborn dirt or stains may be removed by using Spic & Span
adequately dissolved in water. Contact your dealer and
inquire about maintenance packages.
DO NOT use any cleaning products containing abrasives or
solvents, since these could damage the surface. Harsh
chemicals should never be used on acrylic surfaces. Damage
to the shell due to the use of harsh chemicals is not covered
under the warranty.
DO NOT leave your spa drained and in direct sunlight for
extended periods of time. Extreme heat could cause damage

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to the acrylic surface and may induce an effect known
as “crazing”. Crazing is not covered under the spa limited
warranty.
STAINLESS STEEL CONTROLS AND COMPONENTS
ABOVE THE WATERLINE
To preserve the stainless-steel finish of the controls and
components above the water line, we recommend they be wiped
with a dry soft cloth after each use of your spa. In addition, off-
gas your spa by removing the cover for approximately 30
minutes multiple times per week (if not in use) and after every
shock treatment.
CABINET CARE
Never spray cabinets with a high-pressure garden hose or
pressure washer for any reason. This action may induce an
electrical short in the spa’s electrical equipment.
VINYLCABINET
Vinyl cabinets are made of a rigid polymer that combines the
durability of plastic with the beauty of real wood. This cabinet is
manufactured so that it won’t crack, peel, blister or delaminate
even after prolonged exposure to the elements. We recommend
wiping the cabinet with a soft damp cloth (or sponge) using
household soap or liquid detergent and rinsing with fresh water
thoroughly. DO NOT use abrasive cleansers or material as this
may damage the surface.
COVER CARE
A well cared for spa cover is a thing of beauty. Be sure to clean
and condition your cover at least once a month (more often if
needed).
WEATHERSHEILD COVER MAINTAINANCE PROCEDURE
Weather-shield is a solution dyed polyester fabric designed to
be flexible and easy for manufacturers to use. Its urethane
coating enhances the stability of the weave and allows for
greater water resistance, while also minimizing shrinkage and
stretching. Weather-shield features a high UV, water and mold
and mildew resistance and has excellent tear and abrasion
resistance.
CARE & CLEANING
Weather Shield is designed to be easy to maintain. It can be
washed or brushed off and rinsed. Proper care and cleaning are
important to the life of all fabrics.
FOR NORMAL CARE AND CLEANING
•Add 2 ounces of mild soap such as Woolite or Dawn dish-
washing liquid to 1 gallon of lukewarm water.
•Clean the fabric with a "soft bristle brush."
•Rinse thoroughly with cold water and air dry.
FOR STUBBORN STAINS
•Add maximum 1 cup of bleach to one 1 gallon of water.
•Spray lightly on the fabric face (non-coated side). Do not
soak fabric.
•Prolonged exposure to harsh chemicals can damage the
coating.
•Rinse immediately. Do not leave on for more than 2
minutes.
Cleaning with harsh cleaners such as bleach will require a re-
treatment like 303 High Tech Fabric Guard for restoring water
repellency.
All waterfalls and laminar flow water features should be turned off
when the spa is not in use to avoid heat and water loss.
BASIC INSTALLATION AND CONFIGURATION
GUIDELINES
WARNING! Qualified Technicians Required for Service and
Installation
ELECTRICAL REQUIREMENTS
All self-contained spas use 120VAC or 240VAC electrical spa
packs. These instructions describe the only acceptable electrical
wiring procedures. Spas wired in any other way will void your
warranty and may result in serious injury. All installations should
be completed by a certified electrician. Failure to comply with
state and local codes may result in fire or personal injury and will
be the sole responsibility of the spa owner.
120VA: This requires an isolated 15 Amp circuit breaker. This
needs to be an isolated circuit with no other appliances or lights
on this circuit at any time. Extension cords are not to be used in
conjunction with the operations of the spa. Low voltage damage
could result, and this is not covered by warranty.
NOTE: All components must be 120V; No 240V components
allowable.

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240VA: Depending on the model of spa, it will require either a 40
Amp, 50 Amp, or 60 Amp dedicated circuit breaker, GFCI, with the
proper wire size based on the length of the run. The electrical
circuit must be installed by a certified electrician and approved by
a local building or electrical inspector.
Use minimum 6AWG copper conductors only. Torque field
connections between 21 and 23 lbs. Readily accessible
disconnecting means to be provided at time of installation.
Permanently connected power supply.
Connect only to a circuit protected by a Class A Ground Fault
Circuit Interrupter (GFCI) or Residual Current Device (RCD)
mounted at least 5’ (1.52M) from the inside walls of the spa and in
line of sight from the equipment compartment.
CSAENCLOSURE: TYPE 2
Refer to Wiring Diagram inside the cover of the control enclosure.
Refer to Installation and Safety Instructions provided by the spa
manufacturer.
WARNING! GFCI or RCD Protection.
The Owner should test and reset the GFCI or RCD on a regular
basis to verify its function.
WARNING! Shock Hazard! No User Serviceable Parts.
Do not attempt service of this 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. Disconnect the electric power before servicing.
Keep the access door closed.
CSA COMPLIANCE
CAUTION:
•Test the ground fault circuit interrupter before each use of
the spa.
•Read the instruction manual.
•Adequate drainage must be provided if the equipment is to
be installed in a pit.
FOR USE ONLY WITHIN ENCLOSURE RATED CSA
ENCLOSURE 3. CONNECT ONLY TO A CIRCUIT
PROTECTED BY A CLASS A GROUND FAULT CIRCUIT
INTERRUPTER OR RESIDUAL CURRENT DEVICE. TO
ENSURE CONTINUED PROTECTION AGAINST SHOCK
HAZARD, USE ONLY IDENTICAL REPLACEMENT PARTS
WHEN SERVICING. INSTALL A SUITABLY RATED SUCTION
GUARD TO MATCH THE MAXIMUM FLOW RATE MARKED.
WARNING
•Water temperatures of more than 38°C may be injurious
to your health.
•Disconnect the electrical power before servicing.
CAUTION:
When using thiselectrical equipment, basic safetyprecautions
should always be followed.

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SPAMAINTENANCE PROCEDURES
FILTER MAINTENANCE
The spa filter is one of the most important maintenance items of
a spa. The filter is there to remove debris from the water and
needs to be cleaned on a regular basis. Failure to do so may
result in poor performance, poor water clarity and could prevent
the spa from heating. Filtration starts as soon as flow is steady
through the filter. As the filter cartridge removes the debris from
the spa water, the accumulated debris causes flow resistance.
CLEANING AND REPLACING FILTER CARTRIDGE
Your Oasis spa filter has been designed for quick and easy
maintenance. The filter cartridge should be rinsed by hose once
a week and cleaned with a cartridge cleaner once a month. A
second filter cartridge is recommended and will speed up this
process. This can be purchased from your local dealer.
TOP LOAD FILTERS
•Turn the power OFF at the breaker.
•Loosen air relief valve, then remove retainer ring.
•Pull filter lid straight up to remove.
•Do not twist or pull the filter lid up at an angle. This
could cause damage to the filter canister, especially in
freezing conditions.
•Remove filter cartridge and clean with a garden hose and
a high-pressure nozzle. Periodically you may need to
soak your filter in a “cartridge filter cleaner” to remove
excess minerals and/or oils.
•Rinse filter thoroughly before installing. Clean the O-ring
on filter lid and apply a light film of silicone lubricant to the
O- ring. Do not use petroleum-based lubricant as it could
damage the O-ring. Consult your authorized dealer to
purchase suitable lubricant.
•Place clean Cartridge in filter canister.
•Replace filter lid and re-tighten retaining ring (finger
tight only). Note: Make sure the O-ring is on the air relief
valve and is finger tight prior to starting the pump. This
O-ring should periodically be lubricated with a silicone
lubricant.
•There is a 3/8” clear line coming from the filter area, and
this goes to the bottom corner of the spa. This drains
all the water from around the filter canister.
•This is a good time to check the skimmer basket. Bring
skimmer door (weir) forward and unscrew basket. Clean
out debris and reinstall.
WATER QUALITY MAINTENANCE
Maintaining the quality of the water within the specified limits will
serve to enhance your enjoyment and prolong the life of the
spa’s equipment. It is a simple task, but it requires regular
attention because the water chemistry involved is a balance of
several factors. There is no simple formula, and there is no
avoiding it. An indifferent approach to water maintenance will
result in poor and potentially harmful conditions for soaking and
even damage to your spa investment. The most important thing
to keep in mind is that preventing poor water chemistry is much
easier than correcting poor water chemistry. For specific
guidance on maintaining water quality, consult your authorized
dealer who can recommend appropriate chemical products for
sanitizing and maintaining your spa.
MAINTAIN HEALTHY SPA WATER
Important! When maintaining your Oasis spa’s water chemistry,
ensure that your cover is removed during any aggressive
treatments to allow for dissipation into the air. Take care to
remove the cover slowly and let chemicals deplete if you are
uncertain if your water is properly balanced.
Always maintain your Cascade Spa’s water chemistry within
the following parameters:
pH: pH is a measure of relative acidity or alkalinity of water and
is measured on a scale of 0 to 14. The midpoint of 7 is said to be
neutral, above which is alkaline and below which is acidic. In
spa water, it is very important to maintain a slightly alkaline
condition of 7.2 to 7.8. Problems become proportionately severe
the further outside of this range the water gets. A low pH will be
corrosive to metals in the spa equipment. A high pH will cause
minerals to deposit on the interior surface (scaling). In addition,
the ability of the sanitation agents to keep the spa clean is
severely affected as the pH moves beyond the ideal range.

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That is why almost all spa water test kits contain a measure for
pH as well as sanitizer.
Sanitizer (Chlorine or Bromine): To destroy bacteria and organic
compounds in the spa water by breaking them down into non-
harmful levels which get filtered out. A sanitizer must be used
regularly, either chlorine or bromine. Sanitizing your spa water is
the most important spa maintenance you can do for yourself.
Total Alkalinity: This refers to the ability of the spa water to resist
changes in pH. Controlling alkalinity can help keep your pH in the
appropriate range thereby lessening the need for pH balancing. If
the TA is too low the pH level will fluctuate rapidly from high to low.
If the TA is too high the pH will tend to be too high and will be very
difficult to bring back down.
Calcium Hardness: This is a measurement of dissolved calcium
in the water. Calcium will help control the corrosive nature of the
spa’s water.
WARNING: Never store chemicals inside the equipment area
of your spa.
IMPORTANT: Do not use Hydrogen Peroxide based sanitizers in
your spa. When using Chlorine or Bromine tablets you must use a
floating dispenser. These chemicals can have an extremely
corrosive effect on certain materials in the spa. Damage caused
using these chemicals, or improper use of any chemicals, is not
covered under the spa’s warranty.
OTHER ADDITIVES: Many other additives are available for your
spa. Some are necessary to compensate for out-of-balance water,
some aid in cosmetic water treatment and others simply alter
the feel or smell of the water. Your Authorized Dealer can advise
you on the use of these additives.
Look for these specialized cleaning attachments at your
local dealership.
WATER DIVERTER MAINTENANCE
CAUTION: Turn off the spa from main GFCI breaker to
carry out any maintenance procedures.
Steps to clean water diverters:
1. Pull the diverter cap off and rotate the diverter body
counterclockwise andpullout the assembly (Picture 1a
to 1c).
2. Using clean piece of cloth, remove the dust particles or
depositions (Picture 2).
3. Assemble the diverter body by inserting the body back by
rotating the jet body clockwise (Picture 3a and 3b).
Attach the diverter cap.
1a
1b
2
1c
3a
3b

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1a
1b
2
3
4a
4b
JET MAINTENANCE
CAUTION: Turn off the spa from main GFCI breaker
to carry out any maintenance procedures.
It is important to regularly clean the jets to prevent any
unwanted depositions and potential damage to the plumbing. It
is the responsibility of the customer to regularly perform the
maintenance procedures. To clean and maintain optimum jet
functions, follow the maintenance instructions below.
LAMINAR FLOW JET MAINTENANCE INSTRUCTIONS
1. Rotate counterclockwise andpull out the jet body
(Picture 1a and 1b).
2. Using clean piece of cloth, remove the dust particles or
debris (Picture 2).
3. Remove the unreachable debris with the help ofvacuum
cleaner (Picture 3).
4. Assemble the jet insert back by rotating the jet body
clockwise (Picture 4a and 4b).

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WATER CLARITY TROUBLESHOOTING
PROBLEM
PROBABLE CAUSE
POTENTIAL SOLUTIONS
Water Odor
•Improper sanitization
•Excessive organics in water
•pH is too low
 Add sanitizer
 Shock spa with sanitizer
 Adjust pH
Chlorine Odor
•Chloramines are too high
•pH is too low
 Shock spa with sanitizer
 Adjust pH
Musty Odor
•Bacteria or Algae growth
 Shock spa with sanitizer
 Drain and refill spa water
Scale
•Total alkalinity is too high
•pH is too high
•High calcium content in water
 Adjust total alkalinity
 Adjust pH
 Use stain and scale product
Stain
•Total alkalinity is too low
•pH is too low
•High metal content in water
 Adjust alkalinity
 Adjust pH
 Use stain and scale product
Cloudy Water
•Poor filtration
•pH is too high
•Hardness is too high
•Total alkalinity is too high
•Suspended particles
 Clean filter cartridge
 Adjust pH
 Adjust hardness
 Adjust total alkalinity
 Drain and refill spa water
Algae Growth
•pH is too high
•Sanitizer is too low
 Adjust pH
 Shock spa with sanitizer
 Adjust sanitizer level
Eye Irritation
•pH is too low
•Sanitizer is too low
 Adjust pH
 Shock spa with sanitizer
 Adjust sanitizer level
Skin Rash/Irritation
•Free chlorine level too high
•Unsanitary water
 Adjust chlorine level
 Shock spa with sanitizer
 Adjust sanitizer level

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TROUBLESHOOTING GUIDE
SPASYSTEM
SYMPTOM
PROBABLE CAUSE
RECOMMENDED ACTION
Spa does not work
•Power is turned off
 Reset GFCI
No display on the control panel
•Power is turned off
•Defective topside control
 Reset GFCI
 Contact your Dealer
Letters on the control panel
•An error has been found
 Refer to the Reference Card for your control panel
to verify the error. Contact your Dealer for service
PUMP PROBLEMS
SYMPTOM
PROBABLE CAUSE
RECOMMENDED ACTION
Noisy/Loud motor
•Air trapped in the pump
•Low water level
•Worn pump seal
•Defective pump
 Open bleed valve in the skimmer
 Add water to the spa
 Contact your Dealer
 Contact your Dealer
Pumps power down on their own
•Set temperature has been reached
•Filtration cycle has ended
•Automatic time out
•Overheat safety protection
 No problem
 No problem
 Pumps are set to run for a predetermined time
while the spa is in use (15-20 Mins)
 The pumps have a thermal overload which will
prevent them from running for extended periods of
time. Wait until pumps have cooled down (1+ hrs).
If problem persists, contact your Dealer.
Pump running constantly, will not
turn off
•Filter cycle set to 24 hours
•Problem with the circuit board
 Turn off 24 hour filtration
 Turn power off at GFCI and contact your Dealer
Pump will not turn on
•GFCI tripped
•Motor has overheated
•Not plugged in
•Damaged plug
•Seized motor
•Blown fuse
•Motor vent is blocked
 Reset the GFCI
 Let cool for 1+ hour
 Plug in to the board
 Contact your Dealer
 Contact your Dealer
 Check fuse or contact your Dealer
 Clear debris from the vent

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HEAT PROBLEMS
PROBABLE CAUSE
RECOMMENDED ACTION
Water will not heat
•Error message on control panel
•Spa is in a different Heat Mode
•Water level is too low
•Poor water flow
•Closed valves
•Pump 1 is not running
 Refer tothe Reference Card for your control
panel to verify the error
 Set spa to “Standard Mode”
 Add water to the spa
 Clean filter & check valves
 Open all valves
 Contact your dealer
Water is too hot
•Incorrect reading
•Filter cycle duration is too long
 Verify temperature with thermometer
 Reduce duration of the filter cycle
Water will not maintain heat
•Cover is off for extended periods of time in
cold weather / cold wind.
•Spa is wired for 110V and jets are on.
 Put cover back onto spa and allow for heat to
regenerate. Call your dealer if temperature
does not increase.
 Spa wired for 110V only have enough power
to heat or operate pumps. Turn off jets to
power heater.
LIGHTING ISSUES
PROBABLE CAUSE
RECOMMENDED ACTION
Standard light will not come on
•Bulb has burnt out
 Replace the light bulb
LED lighting not in sync
•Burnt out bulb/connection
 Contact your dealer
LED lighting won’t come on
•Incorrect settings
 Contact your dealer
PUMPSWILLNOTPRIME
PROBABLE CAUSE
RECOMMENDED ACTION
Pump on but no water flow
•Air trapped in pump
•No water in the pump
•Closed valves
 Loosen bleed valve in skimmer
 Check the fill level in the spa
 Open all valves
HYDROTHERAPY JETS
PROBABLE CAUSE
RECOMMENDED ACTION
Little to no water flowing from
jets
•Jets turned off
•Pump not primed
•Valves are closed
•Diverter set to a different seat
•Dirty filter
 Open jet by turning the face counter clockwise
 Reset breaker to allow for the spa to prime the
pump. Open bleed valve in the skimmer area
 Open valves
 Switch diverter
 Remove and clean filter cartridge
PLUMBING SYSTEM
PROBABLE CAUSE
RECOMMENDED ACTION
Water around base of spa
•Loose connections
•Leak from internal fitting
 Hand tighten all quick disconnects and fittings.
 Check gaskets and O-rings
 Contact your dealer