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