Pioneer Inverter+ WAS Series User manual

DUCTLESS MINI SPLIT SYSTEM AIR CONDITIONER / HEAT PUMP
CS78421-548-754
IMPORTANT NOTICE:
Please read this manual carefully before installing
or operating your new air conditioning system.
Make sure to save this manual for future reference.
Owner’s Manual
WAS / WYS Series
WAS: Cooling Only Version
WYS: Cooling and Heating Version
Inverter+ and Inverter++ Models
9,000 BTU/h. through 36,000 BTU/h.
®®

Safety Precautions.......................................................04
Unit Specifications and Features ..............................06
Table of Contents
Owner’s Manual
0
1
SAFETY
FIRST
Manual Operation
(Without Remote)................11
2

Care and Maintenance.....................................................12
Troubleshooting...................................................................14
3
4
European Disposal Guidelines....................................18
5

Page 4 
Safety Precautions
Read Safety Precautions Before Installation
The seriousness of potential damage or injuries is classified as either a WARNING or CAUTION.
WARNING
This symbol indicates that ignoring instructions may cause death or serious
Incorrect installation due to ignoring instructions can cause serious damage or injury.
injury.
This symbol indicates that ignoring instructions may cause moderate injury
to your person, or damage to your appliance or other property.
CAUTION
WARNING
This appliance can be used by children aged from 8 years and above and persons with reduced
physical, sensory or mental capabilities or lack of experience and knowledge if they have been given
supervision or instruction concerning use of the appliance in a safe way and understand the hazards
involved. Children shall not play with the appliance. Cleaning and user maintenance shall not be
attempted by children or untrained personnel without proper supervision.
INSTALLATION WARNINGS
•
Ask a licensed HVAC contractor to install this air conditioner. Inappropriate installation may cause
condensate water or refrigerant leakage, undesired performance, electric shock or re.
•
All repairs, maintenance and relocation of this unit must be performed by a properly trained service
technician. Inappropriate repairs can lead to serious injury or product failure.
WARNINGS FOR PRODUCT USE
•
If any abnormal situation arises (like a burning smell), immediately turn o the unit and shut o the
circuit breaker. Call your installer for instructions to avoid electric shock, re or injury.
•
Do not
insert fingers, rods or other objects into the air inlet or outlet. This may cause injury, since
the fan may be rotating at high speeds. Internal components may also be damaged.
•
Do not
use flammable sprays such as hair spray, lacquer or paint near the unit. This may cause
fire or combustion.
•
Do not
operate the air conditioner in places near or around combustible gases. Emitted gas may
collect around the unit and cause explosion.
•
Do not
operate the air conditioner in a highly humid space (e.g., bathroom or laundry room). This
can cause electrical shock and result in early product deterioration.
•
Do not
expose your body directly to cool air for a prolonged period of time.
a
fety
autions

a
fety
autions
Page 5 
ELECTRICAL WARNINGS
• Only use the system powered through a specified dedicated circuit breaker. If the power cord
is damaged, it must be replaced by a certified service agent.
• Assure to use a properly rated circuit breaker of fuse. Gauge of the power wiring must be within
the minimum and maximum circuit amperage requirements of this equipment.
• Do not pull the power and signal cords. Assure all wiring used complies with the national electrical
codes. System power input must be provided through a hardwired power circuit with proper gauge.
• Do not use an extension cord, manually extend the power wires, or connect other appliances to
the same breaker with this air conditioner. Poor electrical connections, poor insulation, and high
amperage draw can cause re.
CLEANING AND MAINTENANCE WARNINGS
• Turn o the device and the breaker before cleaning. Failure to do so can cause electrical shock.
• Do not clean the air conditioner with excessive amounts of water.
• Do not clean the air conditioner with combustible cleaning agents. Combustible cleaning agents
or other harsh chemicals can cause re or deformation.
CAUTION
• If the air conditioner is used together with burners or other heating devices, thoroughly ventilate
the room to avoid oxygen deficiency.
• Turn o the air conditioner and the breaker if you are not going to use it for a long time.
• Turn o the breaker during lightning or other strong storms.
• Make sure that condensation water can drain out of the unit, unhindered in any way.
• Do not operate or touch the air conditioner with wet hands. This may cause electric shock.
• Do not use this system for any other purpose than its intended use (indoor environmental comfort).
• Do not climb over or place objects on top of the outdoor unit.
• Do not allow the air conditioner to operate for long periods of time with doors or windows open,
or if the outdoor humidity level is high. Condensate water will accumulate on or near the unit.

Page 6 
Unit Specications and Features 1
Unit
Specifications
and Features
NOTE:
A guide on using the infrared remote is not included in this literature package. See the
additional material provided that matches with the specic remote controller included.
Unit Parts
“ ” for 3 seconds when:
• TIMER ON is set
• FRESH, SWING, TURBO, SILENCE or SOLAR PV ECO features are turned on
“ ” for 3 seconds when:
• TIMER OFF is set
• FRESH, SWING, TURBO, SILENCE or SOLAR PV ECO features are turned o
“ ” when automatic defrosting mode is activated by the system
“ ” when “warm start delay” feature is activated by the system
“ ” when unit is self-cleaning
“ ” when freeze protection (Low Heat) mode has been turned on
Display Code
Meanings
In Fan mode, the unit will display the room temperature.
In other modes, the unit will display your temperature setting.
,
,
“ ” When ECO function (optional) is activated, the
illuminates gradually one by one as --
-- --set temperature-- ...... in one second intervals.
Power and Signal Wiring
Remote Control
Remote control Holder
(Some Units)
Functional Filter
(On Front of Main Filter - Some Units)
Louver
Front Panel
Display panel Display panel
(1) (2)
“ ” when wireless Control feature is activated (some units)

Unit
Specifications
and Features
Page 7 
Achieving Optimal Performance
Optimal performance for the COOL, HEAT, and DRY modes can be achieved in the following
temperature ranges. When your air conditioner is used outside of these ranges, certain safety
protection features will activate and cause the unit to perform less than optimally.
COOL mode HEAT mode DRY mode
Room Temperature 17°C - 32°C
(63°F - 90°F)
0°C - 30°C
(32°F - 86°F)
10°C - 32°C
(50°F - 90°F)
Outdoor
Temperature
0°C - 50°C
(32°F - 122°F)
-15°C - 30°C
(5°F - 86°F)
0°C - 50°C
(32°F - 122°F)
To further optimize the performance of your unit, do the following:
• Keep doors and windows closed.
• Limit energy usage by using TIMER ON and TIMER OFF functions.
• Do not block air inlets or outlets.
• Regularly inspect and clean air lters.
FOR OUTDOOR UNITS
WITH ELECTRIC HEATERS
(MOST ARCTIC VERSIONS)
Operational Temperature Ranges
When outside
temperature is below 0°C
(32°F ), we strongly
recommend keeping the
unit energized at all
times to ensure smooth
ongoing performance.
COOL mode HEAT mode DRY mode
Room Temperature 17°C - 32°C
(63°F - 90°F)
0°C - 30°C
(32°F - 86°F)
10°C - 32°C
(50°F - 90°F)
Outdoor
Temperature
-15°C - 50°C
(5°F - 122°F)
-20°C - 30°C
(-5°F - 86°F)
0°C - 50°C
(32°F - 122°F)
Standard Models
Arctic (Low Ambient) Models
Full system rated capacity and eciency is obtained at the standard rating conditions as developed by the
testing and rating agencies. Deviations from the rating conditions, especially the atmospheric conditions
will be compansated by the variable speed compressor within certain limits. Heat pump systems function
by exchanging energy, in the form of heat, between the indoor air and the outside ambient air (atmosphere).
System’s net cooling or heating capacities and the eciencies change by the atmospheric conditions as well
as the indoor air conditions (temperatures and humidity levels).
Capacity of the system required for a specic area or application must be determined proessionally by
specic calculations based on several internal and external factors.

NOTE ON ILLUSTRATIONS
Illustrations in this manual are for explanatory purposes. The actual shape of your indoor unit may be
slightly dierent. The actual shape shall prevail.
For a detailed explanation of each function,
refer to the Remote Control Manual.
Other Features
• Auto-Restart
If the unit loses power, it will automatically
restart with the prior settings once power has
been restored (can be overridden by user).
• Anti-mildew (some units)
When turning o the unit from COOL, AUTO
(COOL), or DRY modes, the air conditioner will
continue operate at very low power to dry up
condensed water and prevent mildew growth.
Unit
Specifications
and Features
• WiFi Access (Optional Accessory Needed)
WiFi control allows you to control your air
conditioner using your smart phone and a
Wireless connection.
• Louver Angle Memory (some units)
When turning on your unit, the louver will
automatically resume its former angle.
• Refrigerant Leakage Detection (some
units)
The indoor unit will automatically display “EC”
when it detects refrigerant leakage.
For a detailed explanation of your unit’s
advanced functionality (such as TURBO mode
and its self-cleaning functions), refer to the
Remote Control Manual.
Page 8 
For the USB device access, replacement,
maintenance operations refer to the
manuals provided separately.

Page 9 
Setting vertical angle of air ow
While the unit is on, use the SWING/DIRECT
button to set the direction (vertical angle) of
airflow (Dual function button: Left/Right).
1. Press the SWING/DIRECT button once to
activate the louver. Each time you press
the button, it will adjust the louver by 6°.
Press the button until the direction you
prefer is reached. (left side of buttton)
2. To make the louver swing up and down
continuously, press and hold the SWING/
DIRECT button for 3 seconds. Press it
again to stop the automatic function.
The horizontal angle of the airow must be set
manually. Locate the deector rod (See Fig.B)
and manually adjust it to your preferred direction.
For some units, the horizontal angle of the airow
can be set by remote control. Please refer to the
Remote Control Manual.
NOTE ON LOUVER ANGLES
When using COOL or DRY mode, do not set
louver at a high vertical an angle for long periods
of time. This can cause water to condense on
the louver blade, which will drop on your floor
or furnishings. (See Fig.A)
When using COOL or HEAT mode, setting the
louver at a high vertical an angle can reduce the
performance of the unit due to restricted air
flow.
Do not move louver by hand. This will cause the
louver to become out of sync. If this occurs, turn
o the unit and the breaker for a few seconds,
then restart the unit. This will reset the louver.
Fig. A
CAUTION
Do not put your ngers in or near the blower
and suction side of the unit. The high-speed
fan inside the unit may cause injury.
Fig. B
Setting Angle of Air Flow
Setting horizontal angle of air ow
•
Unit
Specifications
and Features

Page 10 
The SLEEP function is used to decrease energy
use while you sleep (and do not need the same
temperature settings to stay comfortable). This
function can only be activated via remote control.
Press the SLEEP button when you are ready to
go to sleep. When in COOL mode, the unit will
increase the temperature by 1°C (2°F) after 1
hour, and will increase an additional 1°C (2°F)
after another hour. When in HEAT mode, the unit
will decrease the temperature by 1°C (2°F) after
1 hour, and will decrease an additional 1°C (2°F)
after another hour.
It will hold the new temperature for 5 hours, then
the unit will turn o automatically.
Note: The SLEEP function is not available in
FAN or DRY modes.
Sleep Operation
Set
temperature
Saving energy during sleep
Saving energy during sleep
1hr 1hr
7 hours
timer o
+/- 1 C/2 F
SLEEP Operation
+/- 1 C/2 F
•
Unit
Specifications
and Features

Page 11 
How to operate the unit without the
remote control (using emergency button)
In the event that your remote control fails to
work, your unit can be operated manually with
the MANUAL CONTROL button located on
the indoor unit. Note that manual operation is
not a long-term solution and that operating
the unit normally with your remote control is
strongly recommended except for emergencies.
BEFORE MANUAL OPERATION
Unit must be turned o before manual
operation.
To operate your unit manually:
1. Open the front panel of the indoor unit.
2. Locate the
MANUAL CONTROL button on
the right-hand side of the unit.
3. Press the MANUAL CONTROL button one
time to activate FORCED AUTO mode.
4. Press the MANUAL CONTROL button again
to activate FORCED COOLING mode.
5. Press the MANUAL CONTROL button a third
time to turn the unit o.
6. Close the front panel.
Manual Operation (Without Remote) 2
CAUTION
The manual button is intended for testing
purposes and emergency operation only. Please
do not use this function unless the remote is
lost and it is absolutely necessary. To restore
regular operation, use the remote control to
activate the unit.
Manual Operation
(Without Remote)
Manual control button

Page 12 
Cleaning Your Indoor Unit
BEFORE CLEANING OR
MAINTENANCE
ALWAYS TURN OFF YOUR AIR CONDITIONER
SYSTEM AND DISCONNECT ITS POWER SUPPLY
BEFORE CLEANING OR MAINTENANCE.
CAUTION
Only use a soft, dry cloth to wipe the unit clean.
If the unit is especially dirty, you can use a cloth
soaked in warm water to wipe it clean.
• Do not use chemicals or chemically treated
bers to clean the unit
• Do not use benzene, paint thinner,
polishing powder or other solvents to clean
the unit. They can cause the plastic surface
to crack or deform.
• Do not use water hotter than 40°C (104°F)
to clean the front panel. This can cause the
panel to deform or become discolored.
Cleaning Your Air Filter
A clogged air conditioner can reduce the cooling
efficiency of your unit, and can also be bad for
your health. Make sure to clean the filter once
every two weeks.
1. Lift the front panel of the indoor unit.
2. Grip the tab on the end of the lter, lift it
up,then
pull it towards yourself.
3. Now pull the lter out.
4. If your lter has a small air freshening lter,
unclip it from the larger lter. Clean this air
freshening lter with a hand-held vacuum.
5. Clean the large air lter with warm, soapy
water. Be sure to use a mild detergent.
Care and Maintenance 3
6. Rinse the lter with fresh water, then shake
o the excess water.
7. Dry it in a cool, dry place and refrain from
exposing it to direct sunlight.
8. When dry, re-clip the air freshening lter to
the larger lter, then slide it back into the
indoor unit.
9. Close the front panel of the indoor unit.
CAUTION
Do not touch air freshening (Plasma) lter for
at least 10 minutes after turning o the unit.
Care and
Maintenance
Filter Tabs
Remove air freshening filter from back of
larger filter (some units)

Page 13 
CAUTION
• Before changing the lter or cleaning,
turn o the unit and disconnect its power
supply.
• When removing lter, do not touch metal
parts in the unit. The sharp metal edges can
cut you.
• Do not use water to clean the inside of the
indoor unit. This can damage the insulation
and cause electrical shock.
• Do not expose lters to direct sunlight when
drying. This can shrink or deform the lter.
Air Filter Reminders (Optional)
Air Filter Cleaning Reminder
After 240 hours of use, the display panel on
the indoor unit will ash “CL.” This is a reminder
to clean your lter. After 15 seconds, the unit will
revert to its previous display.
To reset the reminder, press the LED button
on your remote control 4 times, or press the
MANUAL CONTROL button 3 times. If you do not
reset the reminder, the “CL” indicator will ash
again when you restart the unit.
Air Filter Replacement Reminder
After 2,880 hours of use, the display panel on
the indoor unit will ash “nF.” This is a reminder
to replace your lter. After 15 seconds, the unit
will revert to its previous display.
To reset the reminder, press the LED button
on your remote control 4 times, or press the
MANUAL CONTROL button 3 times. If you do not
reset the reminder, the “nF” indicator will ash
again when you restart the unit.
CAUTION
• Any maintenance and cleaning of outdoor
unit should be performed by an authorized
dealer or licensed service provider.
• Any unit repairs should be performed
by authorized dealer or licensed service
provider.
Maintenance –
Long Periods of Non-Use
If you plan not to use your air conditioner for an
extended period of time, do the following:
Clean all lters Turn on FAN function until
unit dries out completely
Turn o the unit and
the power breaker
Remove batteries
from the remote control
Maintenance –
Pre-Season Inspection
After long periods of non-use, or before periods
of frequent use, do the following:
Check for damaged wires Clean all lters
Check for leaks Replace batteries
Make sure nothing is blocking all air inlets and outlets
Care and
Maintenance

Page 14 
SAFETY PRECAUTIONS
If ANY of the following conditions occurs, turn o your unit immediately!
• The power wiring is damaged or abnormally warm
• You smell a burning odor
• The unit emits loud or abnormal sounds
• A power fuse blows or the circuit breaker frequently trips
• Water or other objects fall into or out of the unit
DO NOT ATTEMPT TO FIX THESE YOURSELF! CONTACT AUTHORIZED SERVICE PROVIDER
IMMEDIATELY!
Common Issues
The following problems are not a malfunction and in most situations will not require repairs.
Issue Possible Causes
Unit does not turn
on when pressing
ON/OFF button
The Unit has a 3-minute protection feature that prevents the
unit from overloading. The unit cannot be restarted within
three minutes of being turned o.
The unit may change its setting to prevent frost from forming
on the unit. Once the temperature increases, the unit will start
operating in the previously selected mode again.
The set temperature has been reached, at which point the
unit turns o the compressor. The unit will continue operating
when the temperature fluctuates again.
The indoor unit
emits white mist
In humid regions, a large temperature dierence between the
room’s air and the conditioned air can cause white mist.
Both the indoor
and outdoor units
emit white mist
When the unit restarts in HEAT mode after defrosting, white
mist may be emitted due to moisture generated from the
defrosting process.
Troubleshooting 4
Troubleshooting
The unit changes
from COOL/HEAT
mode to FAN
mode

Page 15 
Issue Possible Causes
The indoor unit
makes noises
A rushing air sound may occur when the louver resets its
position.
A squeaking sound may occur after running the unit in HEAT
mode due to expansion and contraction of the unit’s plastic
parts.
Both the indoor
unit and outdoor
unit make noises
Low hissing sound during operation: This is normal and is
caused by refrigerant gas flowing through both indoor and
outdoor units.
Low hissing sound when the system starts, has just stopped
running, or is defrosting: This noise is normal and is caused by
the refrigerant gas stopping or changing direction.
Squeaking sound: Normal expansion and contraction of
plastic and metal parts caused by temperature changes during
operation can cause squeaking noises.
The outdoor unit
makes noises
The unit will operate at dierent sound levels based on its
current operating mode and loading.
Dust is emitted
from either the
indoor or outdoor
unit
The unit may accumulate dust during extended periods of
non-use, which will be emitted when the unit is turned on.
This can be mitigated by covering the unit during long periods
of inactivity.
The unit emits a
bad odor
The unit may absorb odors from the environment (such as
furniture, cooking, cigarettes, etc.) which will be emitted
during operation. Heat exchangers may need to be cleaned.
The unit’s filters have become moldy and should be cleaned.
The fan of the
outdoor unit does
not operate
During the defrost mode, the outdoor fan will be stopped.
Otherwise check for ice or other debris blocking the fan.
Operation
is erratic,
unpredictable,
or unit is
unresponsive
Interference from cell phone towers and remote boosters may
cause the unit to malfunction.
In this case, try the following:
• Disconnect the power, reconnect by resetting the breaker.
• Press ON/OFF button on remote control to restart operation.
NOTE: If problem persists, contact your installer or your nearest customer service
center. Pro vide them with a detailed description of the unit malfunction as
well as your model number.
Troubleshooting

Page 16 
Troubleshooting
When troubles occur, please check the following points before contacting a repair company.
Problem Possible Causes Solution
Poor Cooling
Performance
Temperature setting may
be higher than ambient
room temperature
Lower the temperature setting
The heat exchanger on the
indoor or outdoor unit is
dirty
Clean the aected heat exchanger
The air lter is dirty Remove the filter and clean it
according to instructions
The air inlet or outlet of
either unit is blocked
Turn the unit o, remove the
obstruction and turn it back on
Doors and windows are
open
Make sure that all doors and
windows are closed while
operating the unit
Excessive heat is generated
by sunlight
Close windows and curtains
during periods of high heat or
bright sunshine
Too many sources of heat
in the room (people,
computers, electronics,
etc.)
Reduce amount of heat sources
Low refrigerant due to leak
or long-term use
Check for leaks, re-seal if
necessary and top o refrigerant
SILENCE function is
activated(optional function)
SILENCE function can lower
product performance by reducing
operating frequency. Turn o
SILENCE function.
Troubleshooting

Page 17 
Problem Possible Causes Solution
The unit is not
working
Power failure Wait for the power to be
restored
The power is turned o Turn on the power
The fuse is burned out Replace the fuse
Remote control batteries are
dead
Replace batteries
The Unit’s 3-minute protection
has been activated
Wait three minutes after
restarting the unit
Timer is activated Turn timer o
The unit starts and
stops frequently
There’s too much or too little
refrigerant in the system
Check for leaks and
recharge the system with
refrigerant.
Incompressible gas or
moisture has entered the
system.
Evacuate and recharge the
system with refrigerant
The compressor is broken Replace the compressor
The voltage is too high or
too low
Install a voltage regulator or
call your local power company
Poor heating
performance
The outdoor temperature is
extremely low
Keep and use a separate auxiliary
heating device when needed
Cold air is entering through
doors and windows
Make sure that all doors
and windows are closed and
sealed well during use
Low refrigerant due to leak or
long-term use
Check for leaks, re-seal
if necessary and top o
refrigerant
Indicator lamps
continue flashing The unit may stop operation or continue to run safely. If
the indicator lamps continue to flash or error codes appear,
wait for about 10 minutes. The problem may resolve itself.
If not, disconnect the power, then connect it again. Turn
the unit on.
If the problem persists, disconnect the power and contact
your installer, dealer or the nearest customer service center.
Error code appears in
the window display
of indoor unit:
• E0, E1, E2…
• P1, P2, P3…
• F1, F2, F3…
NOTE: If your problem persists after performing the checks and diagnostics above, turn o your
unit immediately and contact your installer, dealer or the service center.
Troubleshooting

Page 18 
European Disposal Guidelines
This appliance contains refrigerant and other potentially hazardous materials. When disposing of
this appliance, the law requires special collection and treatment. Do not dispose of this product as
household waste or unsorted municipal waste.
When disposing of this appliance, you have the following options:
• Dispose of the appliance at designated municipal electronic waste collection facility.
• When buying a new appliance, the retailer will take back the old appliance free of charge.
• The manufacturer will take back the old appliance free of charge.
• Sell the appliance to certied scrap metal dealers.
Special notice
Disposing of this appliance improperly or in other natural surroundings endangers your health and is
bad for the environment. Hazardous substances may leak into the ground water and enter the food
chain.
Disposal
Information
5

Indoor Unit Error Codes List
☆1 time
☆
☆3 times
☆
☆short circuit
☆short circuit
☆
☆
☆2 times short circuit
☆3 times short circuit
☆circuit or short circuit
☆
☆
☆1 times ☆
☆2 times ☆
☆3 times ☆P2 compressor shell top
☆ ☆
☆ ☆
☆ ☆
☆ ☆
（ ） （ ） ☆（ ）
*P3
1) heating n the outdoor temperature is ower than ℃ (-13F) or 1 the indoor unit
error code P3. Low Ambient Protection.
2) the outdoor temperature goes higher than -22℃ (-8F) minutes and compressor has stopped
or 1 hour or outdoor temperature goes higher than ℃ (23F) then restart.
* Fault Symptom:
A more comprehensive service and diagnostics manual is available for the service technicians.
Contact the manufacturer for the download instructions.
Page 19 

The design and specications are subject to change without prior notice for
product improvement. Consult with the sales agency or manufacturer for details.
Refer to the equipment nameplate for all other applicable specications.
CS368U-AB
16122000002334
20160918
is a registered trademark of Parker Davis HVAC International, Inc.
Parker Davis HVAC International, Inc.
2250 NW 102 Place, Doral, FL 33172 - USA
Tel : [phone]
Fax : [phone]
email : [e-mail]
Website: www.pd-hvac.com
Pioneer product range, parts and supplies are
available online for convenient ordering at:
www.highseer.com
Copyright 2016, Parker Davis HVAC International, Inc., All rights reserved.