ARAMA DCIPT9 Service manual

DC-INVERTER PACKAGED TERMINAL
AIR CONDITIONER/HEAT PUMP
INSTALLATION INSTRUCTIONS & OWNER'S MANUAL
ARAMA HEAT PUMP MODELS
DCIPT9
DCIPT12
DCIPT15
ATTENTION INSTALLATION PROFESSIONAL
As a professional installer you have an obligation to know the product better than the customer. This includes all
safety precautions and related items.
Prior to actual installation, thoroughly familiarize yourself with this instruction manual. Pay special attention to all safety
warnings.
Often during installation or repair it is possible to place yourself in a position which is more hazardous than when the unit
is in operation.
Remember it is your responsibility to install the product safely and to know it well enough to be able to instruct a customer
in its safe use.
Safety is a matter of common sense, a matter of thinking before acting. Most dealers have a list of specific good safety
practices, follow them.
The precautions listed in this Installation Manual are intended as supplemental to existing practices. However, if there a
direct conflict between existing practices and the content of this manual, the precautions listed here take precedence.

-1-
CONTENTS
UNITFEATURES……………………………………………2
INSTALLATIONINSTRUCTION……………………………4
WIRING…………………………………………………………7
OPERATING INSTRUCTIONS(ACCESSORY OPTIONAL)………8
SENIOR OPERATION…………………………………9
FUNCTION OF DIP SWITCHES…………………………10
MAINTENANCE AND CLEANING ………………………11
NORMAL OPERATING SOUNDS AND CONDITION……13
DIAGNOSTICCODES& SOLUTIONS……………………14
TROUBLESHOOTING……………………………………15
IMPORTANTNOTES:
Before using this manual, check the serial plate for proper
modelidentification.
The installation and servicing of this equipment must be
performedbyqualified,experiencedtechniciansonly.
Dueto policy ofcontinualproduct improvement, the rightis
reserved to change specifications and design without
notice.
IMPORTANTNOTICETOTHEOWNER
This manual is to be used by qualified, professionally trained
HVAC technicians only. The manufacturer does not assume
any responsibility for property damage or personal injury for
improper service procedures or services performed by an
unqualifiedPerson.
THE FOLLOWING WARNINGS ARE
VERY IMPORTANT FOR SAFETY.
PLEASE READ THEM CAREFULLY
B E F O R E I N S T A L L A T I O N !
1. The air conditioner must be installed
by certificated installer. It's forbidden
to install by those amateur.
2. Please check whether there is
grounding wire in the power supply
system before installation. If not,
installers should refuse installing and
explain the safety principle to users.
3. To avoid electric shock or even
death, the socket or terminal blocks for
p o w e r s u p p l y t o t h e a i r
conditioner(include 277V and 115V
and 208~230V series and the units that
have LCDI power cord) must connect a
Ground Fault Circuit Interrupter.
4.During installation,the wire
connection must strictly follow the rule
which is zero line and fire line of unit
should be connected to the zero line
and fire line in the power system. The
connection in reverse is forbidden.
Please be sure the ground wire is firmly
connected otherwise it is possible to
result in the electrical shock or death.
IMP ORTAN T NO TIC E TO TH E
OPERATOR/ENGINEER
Read this manual and familiarize yourself with the specific
items which must be adhered to before attempting to
service this unit. The precautions listed in this Installation
Manual are intended as supplemental to existing
practices. However, if there is a direct conflict between
RECOGNIZE THIS SYMBOL
AS A SAFETY PRECAUTION
WARNING
THE MANUFACTURER WILL NOT BE RESPONSIBLE FOR ANY
INJURY OR PROPERTY, DAMAGE ARISING FROM IMPROPER
SERVICE OR SERVICE PROCEDURES. IF YOU INSTALL OR
PERFORM SERVICE ON THIS UNIT, YOU ASSUME
RESPONSIBILITY FOR ANY PERSONAL INJURY OR PROPERTY
DAMAGE WHICH MAY RESULT, MANY JURISDICTIONS
REQUIRE A LICENSE TO INSTALL OR SERVICE HEATING AND
AIR CONDITIONING EQUIPMENT.
HIGH VOLTAGEWARNING
DISCONNECT ALL POWER BEFORE SERVICING OR
INSTALLING THIS UNIT. MULTIPLE POWER SOURCES MAY
BE PRESENT, FAILURE TO DO SO MAY CAUSE PROPERTY
DAMAGE, PERSONAL INJURY OR DEATH.

-2-
UNIT FEATURES
This unit has many features which are different from those
found on conventional PTAC units. The operator must be
familiar with these features in order to properly handle the
unit .
• DC-inverter compressor-Manufactured by
HEAT
COOL
FAN
SPEED
HIGH
LOW
AUTO
MITSHUBISH, due to its higher efficiency, energy
saving up can be up to 30% to 80%. Operation
voltage range is wider from 160VAC~270VAC, make
sure unit operation more stable under wide voltage
range power input. For its soft start feature, power
surge can be avoided, and also lower the noise level.
Without frequently start-stop makes the room
temperature more stable, so more comfortable.
•High performance IPM-Containing PFC module,
under heavy loading, PF can be up to 99%, thus
decreases EMI pollution to power supply system, and
also decreases power surge. Compressor driver chip
is manufactured by FAIRCHILD, famous brand and
high performance, making the compressor running
more reliable and more stable.
•LCDI Cords-Underwriters Laboratories and the
National Electric Code (NEC) now require power
cords that sense current leakage and can open the
electrical circuit to the unit on units rated at 250 volts
or less. In the event that unit does not operate, check
the reset button located on or near the head of the
power cord as part of the normal troubleshooting
procedure.
LCDI power Cord
•Automatic 3-minute compressor lockout-After
the compressor cycles off, it will not restart for three
minutes.
•Random restart delay-To help eliminate power
surges after a power outage, the unit is equipped with
a two to four minute random restart delay feature.
Whenever the unit is plugged in with the master
switch turned on and the mode switch set in the cool
or heat mode, a random restart will occur. A random
restart condition can be avoided by setting the mode
switch in the fan only or off position before applying
power to the unit.
•Indication LEDs-The control panel has LEDs that
correspond to fan operation and to indicate unit
status. The LEDs next to the selections ON/OFF,
FAN, COOL, and HEAT indicate which operational
mode is active.
FAN ON/OFF
•System safety protections-To ensure the system
running safely, electric control has the following
protections, for problem solving, please refer to
dia g n o stic codes & sol u t i o ns an d
troubleshooting sections.
A) Outdoor unit overload protection in COOLING
mode
When condenser coil temperature exceeds the
presetting point, compressor decreases the operating
frequency to 30Hz. If this protection is inactive and
condenser coil temperature reaches the shut-down
point, compressor will be turned off. Thus unit provide
double protections.
B) Evaporator over cold protection (will not
display error code)
When evaporator coil temperature drops to 1℃and
lasts for 5 minutes, compressor and outdoor fan will
stop, indoor fan keeps on running.
C) Compressor discharge over heat protection
When compressor discharge temperature reaches
protection point, compressor will decrease operating
frequency to 30Hz. If this protection is inactive and
discharge temperature reaches the shut down point,
compressor will be turned off. Thus provide double
protections.
D) Evaporator overload protection in HEAT PUMP
mode
When evaporator coil temperature exceeds the
presetting point, compressor decreases the operating
frequency to 30Hz. If this protection is inactive and
evaporator coil temperature reaches the shut down
point, compressor will be turned off. Thus provide
double protections. This time the back up electric
heater will be turned on.
E) Input over current protection
When input current exceeds the presetting point,
compressor will decrease the operating frequency to
30Hz. If this protection is inactive and current reaches
the shut down point,compressor will be turned off.
F) Compressor over current protection
When compressor operating current exceeds the shut
down point, compressor will be shut down.
G) IPM fault protection
When IPM faults, include over heat, unit will be shut
down, all outputs are terminated, control panel
displays the error code.
H) Temperature sensor fault protection
Any temperature sensor faults, unit stops and display
the error code.
I) Communication fault protection
For continuously 2 minutes communication faults
between indoor unit and outdoor unit, unit will
shut down and displays error code.

-3-
J) Compressor starting fault
If compressor starting fails, 3 minutes later, it will try to
start again. It will not display error code at the first 3 times
fault. If the 4th time fail again, it will not start any more and
display the error code.
K) DC-BUS over voltage/under voltage protection
Once monitors the DC-BUS is over or under voltage, unit
stops and display error code.
L) EEPROM fault
When the unit is powered on, if system monitors the
EEPROM fault, displays error code and will not operate
any more.
• Intelligent control-CPU will adjust the compressor
operating frequency according to the energy demand,
making the room temperature more stable and more
comfortable and more energy saving.
•Two-speed outdoor fan HIGH/LOW-When outdoor
ambient temperature becomes lower (for example,
during the night), outdoor fan will operating in low speed,
so to lower the noise and also more energy saving.
• Standard Physical Dimensions-The series PTAC is
with the same dimensions 42" wide x 16" high x 13-3/4"
deep
Replacement of older units is made easy.
•Weather-Protected Electrical Components-Vital
electrical components are protected from the weather by
locating them on the indoor side of the weather barrier.
•Highly Featured Microprocessor Controls-
Microprocessor controls are programmed to interface
with the temperature sensors to maximize comfort
conditions for the room occupant and provide
outstanding features.
Thermistors are used to sense small changes in
temperature to give excellent room control and allow the
microprocessor to monitor and react to changing
conditions.
•Automatic Emergency Heat on Heat Pump Units-
Automatically uses electric resistance heat if the heat
pump fails .
• Fan Motors Permanently Lubricated-All units have
two fan motors for quiet operation and maximum
operating efficiency.
Motors are permanently lubricated to reduce
maintenance and totally enclosed to keep dirt and water
out of the motor windings.
•Indoor Fan Speed Selections LOW /HIGH-Unit may
be operated in low fan speed or high fan speed. Some
speed may not be present based on unit
capacities.
• LS Control(front-desk control)-The unit can be
turned ON/OFF by front-desk control switch.The control
wire,colored purple,locates in the wall mounted
thermostat interface(refer to Fig11 on page 7).
WALL MOUNTED THERMOSTAT INTERFACE
R LS GH B Y W GL C
The control logic as belw:
1.Turn ON unit:short circuit R and LS then release for
one time within 5 seconds.
2.Turn OFF unit:short circuit R and LS then release for
twice within 5 seconds.
3.Force unit shut down for one time:connect LS to R for
over 5 seconds.
NOTE: After force shut down, you can turn the unit ON
again by hand-held remote controller or the control
panel.
WARNING
HIGH VOLTAGE
DISCONNECT ALL POWER BEFORE SERVICING OR
INSTALLING THIS UNIT. MULTIPLE POWER SOURCES MAY
BE PRESENT, FAILURE TO DO SO MAY CAUSE PROPERTY
DAMAGE, PERSONAL INJURY OR DEATH.
UNIT ACCESSORIES
This unit is designed for through-the-wall installation in
new or existing buildings. To complete the installation
of this PTAC, an insulated wall sleeve and an outdoor
grille (either the stamped aluminum grille, or the
architectural grille ) are required.
The chassis and the cabinet front are shipped in one
carton. Optional accessories to complete a particular
installation are the following:
OPTIONAL ACCESSORIES
Wall Sleeve Kit
Key Lock Kit
Drain Kit
Filter Kit
Wire Harness Kit
Architectural Grille Kit
Stamped Louver Kit
LCDI Power Cord
Wireless IR Thermostat
Electric And Non Electric Sub Base Kit
IRREMOTECONTROLLER
NOTE: Consult sales literature for the appropriate
voltage and amperage selections, if applicable.

-4-
16"
INSTALLATION INSTRUCTIONS
To ensure that the unit operates safely and efficiently, it must be installed, operated and maintained according
to these installation and operating instructions and all local codes and ordinances or, in their absence, with the
latest edition of the National Electric Code. The proper installation of this unit is described in the following
sections. Following the steps in the order presented should ensure proper installation.
HIGH VOLTAGEWARNING
DISCONNECT ALL POWER BEFORE SERVICING OR
INSTALLING THIS UNIT. MULTIPLE POWER SOURCES MAY
BE PRESENT, FAILURE TO DO SO MAY CAUSE PROPERTY
DAMAGE, PERSONAL INJURY OR DEATH.
Outdoor grille
Wall sleeve
Outdoor Fan
Display Module
Indoor Fan
Electric heater
Front and dischargegrille
Outdoor coil
Invertercompressor
Electronic controlmodule assembly
Power cord coverplate ( not show)
Control box
Indoor coil
WALL SLEEVE ASSEMBLY (OPTIONAL ACCESSORY)
Two kinds of wall sleeve are optional for customers, one is reassemble wall sleeve and the other one is
welding integrated wall sleeve.
Removable Wall Sleeve
The removable wall sleeve can be removed and occupies less space and is convenient to transport. Follow the
below steps to install :
a) Unpack all parts and accessories, referring to Fig 1.
b) Assemble the wall sleeve by first “clip locking” the side pieces to the bottom piece.
c) Assemble the top piece to the assembled side and top piece.
Welded integrated wall sleeve
Welded integrated wall sleeve is featured by artistic appearance and stable structure referring to Fig 2.
Customers can purchase together with unit.
Fig 1 Fig 2

-5-
minium finished opening
dimensions
sleeve dimensions
Height
width
height
width
depth
NO.1
16-1/4"
42-1/2"
16"
42"
13-3/4"
NO.2
16-1/4"
42-1/4"
Dimensions
Recommended installation clearance
D1
Projection of case into room-1/2"minimum up to1-3/4"maximum
without use of electrical sub-base.
Note: 2-3/8" minmum when sub-base is used.
D2
Height above finished floor or top of carpet-1/2"minimum,
2" recommended without sub-base-3" minimum with sub-base.
SLEEVE INSTALLATION
Wallsleevelocation
When making the wall opening, please observe the
followingrequirement:
A) The air inlet and outlet should be unblocked and the air
MAIN STUD
JACK STUDS
16-1/4"MIN
HEADER-4"×4"OR
2-2"×4"ON EDGE
canbedeliveredtoeverycorneroftheroom
B) Install the unit in places that are awayfrom heat source
orsourcesof flammablegases.
C) Donotinstall theunitinplacesthataresubjecttostrong
dust
JACK STUD
CRIPPLE
ADJUSTABLE FRAMING TO SECURE
THIS DIMENSION
42-1/4"MIN
FINISHED FLOOR
D) Do not install the unit in places where the operational
noiseandexhaustedairmighttroubleyourneighbour.
E) There should be sufficient space margins around the
unit to facilitate maintenance and repairs(refer to Figs 3
and4)
Chart 2
SUB-FLOOR
Fig 5
Note:Do not remove the stiffener
support from inside the wall case
until the chassis is to be installed.
NOTE: NO.1 means using field supplied sleeve angles
(16"/18"/24")
NO.2 means not using field supplied sleeve angles
1
2
Fig 3
In order for condensate water to drain properly inside the
unit,thesleevemustbeinstalledproperly:
•Levelfromrighttoleft.
•A slight downward pitch from the indoor side to the
out-doorsideasshownbelow(Fig 6).
•Fasten the wall sleeve(Fig 7).
Fig 4
Inside Outside Level
Chart 1
Wall
Sleeve
1/4 Bubble
Tilt to
Outside
Preparationofthewall
The sleeve should be installed during construction and
lintels should be used to support the block above the wall
sleeve. The sleeve can not support the load of bricks/
blocks.
For existing construction, wall opening must be created,
the proper dimensions are necessary toavoid use offillers
Fig 6
Outside
Wall
Proper Sleeve Tilt
or additional framing .The sleeve is modular in height and
width(refertoFig5&Chart2).
Height: Fits2courses
concreteblock Fits6courses
standardbrick Fits5courses
jumbobrick Width:
WOOD
SCREW
MOLLY
OR TOGGLE
BOLT
EXPANSION
ANCHOR
BOLT
Fitapproximately3studspaces. Fig 7

-6-
OUTDOORGRILLE(OPTIONAL ACCESSORY)
An outside grille must be installed to direct air flow for
properunitoperation andalsoprotecttheoutdoorcoil.The
grillemustbeinstalledbeforeinstallingthechassis.
When replacing an old chassis with an existing grille or
using a specialized grille in a new installation, please
check with after-sales engineer of supplier to determine if
the new chassis should be used with the nonstandard
specialized grille. An improper outdoor grille can decrease
cooling or heating capacity, increase energy usage and
shortencompressorlifeandpossiblyvoidthewarranty.
Flush Stamped Louver
4. Secure the chassis tothe wall sleeve using threescrews
on each side of the chassis to ensure a proper seal
between the chassis and the wall sleeve. The screws are
suppliedinaplasticbag.
IMPORTANT NOTES:
1. The unit is equipped with a rubber grommet mounted
compressor. These grommets are factory set and require
noadjustment.
2. Check the indoor and outdoor grilles for obstructions to
airflow. The unitmust belocated where curtains, furniture,
trees, or other objects do not block the air flow to and from
the unit. If air is obstructed and/or deflected back into the
unit, the air conditioner compressor may cycle on and off
rapidly. This could damage the compressor or possibly
voidthewarranty.
Architectural Louver
CHASSISINSTALLATION
1. Removethecabinetfrontfrom thechassisasdescribed
inFrontRemoval.
2. Insertthechassisintothewallsleeve.
Wall Sleeve
Chassis
FRONTREMOVAL
1. Graspthecabinetfront.
Cabinet Front Removal View 1
2. Pull the bottom of the cabinet front away from the
chassisuntiltheretainingclipsdisengage.
Slide Chassis in Outside wall
Chassis Installation View 1
3. Slide the chassis into the wall sleeve until the chassis
flangescontactthefrontedgeofthewallsleeve.
Wall Sleeve
Cabinet Front Removal View 2
3. Lift the cabinet front off the chassis. Reverse this
proceduretoreinstallthecabinetfront
Screws
(3 on each
side of unit)
Chassis
Outside wall
Chassis Installation View 2

-7-
Operating Voltage
Unit Voltage
Voltage Utilization Range
Rating
Minimum
Maximum
230/208
197
253
WIRING
230~208V units are equipped with LCDI power cords and
can open the electrical circuit to the unit. In the event the
unit does not operate, check the reset button located on or
near the head of the power cord as part of the normal
troubleshootingprocedure.
VOLTAGE MEASUREMENTS
Once the unit is properly wired, measure the unit supply
voltage. Voltage must fall within the voltage utilization
range given in Chart 3.
HIGHVOLTAGEWARNING
Chart 3 -Operating Voltage
DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING
THIS UNIT. MULTIPLE POWER SOURCES BE PRESENT, FAILURE
TO DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY
OR DEATH.
DO NOT SERVICE THIS UNIT WITHOUT FIRST SHUTTING OFF THE
POWER TO THE UNIT FROM THE CIRCUIT BREAKER AND/OR
REMOVINGTHEUNITCORDSETPLUGFROMTHEWALLOUTLET.
Tandem
230/208V 15Amp
Perpendicular
230/208V 20 Amp Large tandem
230/208V 30Amp
Fig 8 Receptacles/Sub-bases
WARNING
TO AVOID THE RISK OF PROPERTY DAMAGE, PERSONAL
INJURY OR FIRE, USE ONLY COPPER CONDUCTORS.
WARNING
TO AVOID PROPERTY DAMAGE, PERSONAL INJURY OR
DEATH DUE TO ELECTRICAL SHOCK, DO NOT USE AN
EXTENSION CORD WITH THIS UNIT.
WARNING
TO AVOID THE RISK OF PROPERTY DAMAGE, PERSONAL
INJURY OR FIRE DO NOT INSTALL WITH POWER CORD
STRETCHED OR UNDER A STRAIN AS THIS MAY CREATE
LOOSE PLUG/RECEPTACLE CONNECTION.
WALLMOUNTEDTHERMOSTATINTERFACE
R LS GH B Y W GL C
WARNING
TO AVOID THE RISK OF PERSONAL INJURY, WIRING TO THE
UNIT MUST BE PROPERLY POLARIZED AND GROUNDED.
WARNING
THIS AIR CONDITIONER IS NOT MEANT TO PROVIDE
UNATTENDED COOLING OR LIFE SUPPORT FOR PERSONS
OR ANIMALS WHO ARE UNABLE REACT TO THE FAILURE OF
THIS PRODUCT.
THE FAILURE OF AN UNATTENDED AIR CONDITIONER MAY
RESULT IN EXTREME HEAT IN THE CONDITIONED SPACE
RED-24VAC
Purple-LS control
Green-High fan speed
Blue-Reversing valve
Yellow-Compressor
White-Heater
Orange-Low fan speed
Black-Common ground
R LS GH B YW GL C
Thermostat
CAUSING OVERHEATING OR DEATH OF PERSONS OR
ANIMALS. Fig 9 wall mounted thermostat wiring
NOTE: See the “Remote Thermostat Change"instructions before
use the thermostat.

-8-
OPERATING INSTRUCTIONS (ACCESSORY OPTIONAL)
Operation mode buttons
Press these buttons to
select the unit operate on
Receiver of IR remote controller signal FanSpeedbutton
Pressthisbuttontoselect the
fanspeedonhigh,lowor
heat mode, cool mode or fan
mode. auto.
Operation mode indicator
lamps
HEAT
COOL
FAN
SPEED
HIGH
LOW
AUTO
Fanspeedindicatorlamp.
Operationstatueindicator
lamp.
ON/OFFbutton
when the unit operates on FAN ON/OFFPressthisbuttontoturn the
heat or cool or fan mode the
indicator lamps will be
actived.
Digital displayer
On normal operation it indicates set/room tempterature;
When pressing + or - button, it indicates setting tempterature ;
On time operation, it indicates timer time;
On failure operation, it indicates error code.
unitONorOFF.
WARMbutton
Pressingthisbuttontosetroom
temperaturewarmer.
COOLbutton
Pressingthisbuttontosetroom
temperaturecooler.
Fig10 Use of unit mountedcontrol panel
Operation mode indicator
Fan speed indicator
Present time indicator
TEMP indicator
Indicate set temperature
Keyboard locked indicator
Timer time indicator
TEMPsettingbutton
This button is used to sent the room
temperature. Pressing of + or - button,
the temperature setting is increased or
decreased.
FAN SPEED button
Press this button to select the high/
low/autospeed of air delivery.
TIMERbutton
This button is used to sen the switch-on
or switch-off mode. Used together with
the HOUR button, the time setting can
be made within the range of 1-12 hours,
withtheintervalofonehour.
HOURbutton Thisbuttonis
usedto set the present time orthetimefor
switch-onorswitch-off.
°C/°F
ON/OFF
ON/OFF button
Press this button to start or stop the units.
Operation Mode button
This button is used to select the cooling,
fan or heating mode of operation.
HOLDbutton
Pressthisbuttontolock/unlockthekeyborad.
MINbutton
Thisbuttonisusedtosetthepresenttime.
°C/°Fbutton
Thisbuttonisusedtoswitch Fahrenheit
and Centigrade temperature.
Fig11 Use of hand held remote controller

-9-
Parameter
code
Function
Parameter
value
Explanation
d0
Unit of
temperature
F
Fahrenheit(default)
C
Celsius
d1
Operation way
selection
P
By control panel or IR remote
thermostat (default)
r
By 24V universal remote
thermostat
d2
Top temperat-
ure setting
d3 to 32℃/90℉
The minimum value is d2
(default 32℃/90℉)
d3
Bottom temp-
erature setting
16℃/60℉ to d2
The maximum value is d3
(default 16℃/90℉)
COOL/FAN/HEAT MODE OPERATION
PROCEDURE
Controlpanel:
l PresstheON/OFFbutton.
l Press the HEAT/COOL/FAN button, select the operation
mode: heat/cool/fan.
l Press +or -button, to set yourdesired temperature.The
settingtemperaturerangeis60-90°F(16-32°C).
l Press the FAN SPEED button, to set your desired air
flowrate: high/low/auto.
Remotecontroller:
l Press the ON/OFF button with the remote controller
pointingtowardthepackagedterminalairconditioner.
l Press the MODE button, select the operation mode:
cool/fan/heat.
l Press +or -button, to set yourdesired temperature.The
settingtemperaturerangeis61-88°F(16-31°C).
l Press the FAN SPEED button, to set your desired air
flowrate:hig/low/auto.
TIMER PROCEDURE ( Remote controller)
When cells are inserted, the present time is automatically
settoAM0:00.EX.:settoAM10:30.
l Open the back cover, push the CLK button .The time
indicatorisflickeringandcansetthepresenttime.
l PresstheHOURbutton.(settoAM10:00)
l PresstheMINbutton.(setto30)
l Press the CLK button again, and then close the back
cover.
NOTE:Forsometype,thisfunctionmaybenotexist.
SENIOROPERATION
Under OFF mode, hold [COOL] and [FAN SPEED] two
keys at the same time continuously for 5 seconds. This
time display ‘d0’, indicates that system has entered the
senioroperationstatus.
[COOL] key is used to switch parameter code and
parametervalue;
[+] or [-] keys are used to switch parameter code or set
parametervalue;
[ON/OFF] keyisusedtosaveandexitsettings.
d4
Indoor tempera-
ture calibration
-9℃ to 9℃
If unit of temperature is changed,
calibration should be done again.
Ifusethedefaultvalue,it canbe
ignored.(default0℃/0℉)
-9℉to 9℉
d5
Temperature dis-
play selection
0 or 1
1indicatesdisplayingroomtemp-
erature,0forsettingpoint
(default0)
Onesettingexample: Settingtarget:d0(C),d1(r),
d2(30℃),d3(18℃),d4(-
1℃),d5(1).
Step1:hold[COOL]and[FANSPEED]twokeysatthe
sametimecontinuouslyfor5seconds.
Display:'d0' Step2:shortpress
[COOL]key. Display:'F'
Step3:shortpress [+]or[-]key.
Display:'C'(settingd0hasfinished)
Step4:shortpress[COOL]key.
Display:'d0' Step5:shortpress[+]
key. Display:'d1' Step6:shortpress
[COOL]key. Display:'P'
Step7:shortpress[+]or[-]key.
Display:'r' (settingd1hasfinished)
Step8:shortpress[COOL]key.
Display:'d1' Step9:shortpress[+]
key. Display:'d2' Step10:short
press[COOL]key. Display:'32'
Step11:shortpress[-]keytwice.
Display:'30' (settingd2hasfinished)
Step12:shortpress[COOL]key.
Display:'d2' Step13:shortpress[+]
key. Display:'d3' Step14:shortpress
[COOL]key. Display:'16' Step15:
shortpress[+]keytwice. Display:'18'
(settingd3hasfinished) Setp16:
shortpress[COOL]key. Display:'d3'
Step17:shortpress[+]key.
Display:'d4' Setp18:shortpress
[COOL]key. Display:'0'

-10-
Step19: short press [-] key.
Display:'-1' (setting d4 has finished)
Setp20: short press [COOL] key.
Display:'d4'
Step21: short press[+] key.
Display:'d5'
Step22: short press [COOL] key.
Display:'0'
Step23: short press [+] or [-] key.
Display:'1' (setting d5 has finished)
Step24: short press [ON/OFF] key to save and exit
settings.
VENTILATIONCONTROL
The ventilation control lever is located at left side of unit,
behindfrontpanel.
NOTE:Theventdoorshipping tapemustberemovedbefore
usingventcontrollever.SeeFig12 and Fig13.
When set at close, only the air inside the room is circulated
andfiltered;
Whensetatopen, someoutdoorairwillbedrawnintoroom,
thiswillreduceheatingorcoolingefficiency.
FUNCTIONOFDIPSWITCHES
(puttingtoONpositionmakes thefunction active)
#1 Reserved
#2 Heat pump-It must match the module，forbidden
changing the default setting
# 3 E l e c t r ic h e a t e r - I t m u s t m a t c h t h e
module，forbidden changing the default setting
#4 Reserved
#5 Freeze protection-Default setting is ON.
When room temperature is lower than 10℃(50℉)
continuously for 3 minutes, unit (except the cooling
only type) will start heating automatically. Only when
Shipping
tape
Fig 12 Shipping tape Location
Remove shipping
screw if present
room temperature reaches 13℃(55℉) will heating
be stopped.
If this switch is put to OFF position, it will be no freeze
protection.
#6 Electric memory-Default setting is ON.
Fig 13 Shipping Screw Location
If the unit is cut out of power during the operation,
when it is powered up again, all last settings will be
remembered, and the operation will follow the last
mode. Manual turn on the unit, operation mode will
be the last settings.
If this switch is put to OFF position, it will be no
memory.
#7 Fan CON/CYC for heating-Default setting is
OFF(indoor fan cycles running).
In heating mode when compressor is OFF, indoor fan
will be OFF too.
If this this switch is put to ON position, even
compressor is OFF, indoor fan will continuously
running.
#8 Fan CYC/CON for cooling- Default setting is
OFF(indoor fan continuous running). In cooling
mode when compressor is OFF, indoor fan will
continuously run. If this switch is put to ON position,
when compressor is OFF, indoor fan will be OFF .
The vent control allows outside air to be drawn into the
conditioned area. This outside air can provide ventilation
when the blower is operating, but it will increase the
heatingorcoolingloadandoperatingcosts.
Toobtainaccesstotheventcontrol
1. Remove the cabinet front (see Front Removal).
2. Remove the shipping screw (if installed) from the vent
door.
3. Remove the label (if present) from over the vent control
lever on the left side of the chassis. Remove the vent door
shippingscrew.
4. Rotate the vent control lever to either open or close
the damper.

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HIGHVOLTAGE
WARNING DischargeAirFlow
3. Remove the seven (7) screws which secure the
dischargeairgrilletothecabinetfront.
DISCONNECT ALL POWER BEFORE SERVICING OR
INSTALLING THIS UNIT. MULTIPLE POWER SOURCES BE
PRESENT, FAILURE TO DO SO MAY CAUSE PROPERTY
DAMAGE,PERSONALINJURYORDEATH.
Location of 7 Screws
DischargeAirFlowGrille Removal
4. Rotatethegrille180° clockwise
5. Reinstall the screws securing the discharge air grille to
thecabinetfront.Reinstallthecabinetfrontontheunit.
MAINTENANCE AND CLEANING
Vent door lever positions
HIGHVOLTAGEWARNING
AIR DISCHARGE GRILLE
The discharge grille can be adjusted to expel air at
either a 15°or 55°angle。
DISCONNECT ALL POWER BEFORE SERVICING OR
INSTALLING THIS UNIT. MULTIPLE POWER SOURCES BE
PRESENT, FAILURE TO DO SO MAY CAUSE PROPERTY
DAMAGE,PERSONALINJURYORDEATH.
15°
Discharge
Air
55°
Discharge
Air
MONTHLY MAINTENANCE AND
CLEANING
IntakeAirFilters
To properly maintain the operational performance of
your PTAC unit, it is extremely important that the inlet
air filters be cleaned once per month or more often if
operated in dusty or dirty locations or conditions. The
intake air filters are constructed of durable
polypropylene. The "air intake" air filters can be easily
inserted into the cabinet front, using the filter guides.
Before cleaning the intake filter, turn the unit off by
Discharge Grille Orientation Options
Use the following procedure to change the angle of the
dischargeairflow:
1. Removethefrontcabinet(seeFrontRemoval).
2. Positionthefrontsothatthebacksideisaccessible.
setting the mode switch to the OFF position. Filter
shouldbecleanedasrequired.
The following procedure is used to remove the intake
filler:
1. Graspeachfilterbyitsmolded handle, located on the
frontedgeofthefront,belowthedischargegrill.

-12-
2. Pullthefilterstraightupandremove.
3. Cleanfilterwithvacuumorwithrunningwater.
Reversethisproceduretoreinstallthefilter.
Filter is removed by grasping
the filter's top and gently
pulling up
Front removal is not
necessary to
remove the filter
Vent Screen
Before cleaning the vent screen, disconnect power to the
unit by unplugging the power cord at the wall outlet or
subbase, or disconnect power at the fuse box or circuit
breaker. If unit is operated with vent door closed, the vent
screen does not need
to be cleaned.
1. Remove the cabinet front as described in Front
Removal.
2. Remove the six screws securing the chassis to the wall
sleeve.
3. Slide the chassis out of the wall sleeve far enough so
that the vent screen is accessible.
4. Clean the vent screen, slide the chassis back into the
wall sleeve, secure it in place with six screws and reinstall
the front cabinet.
Cabinet Front
The cabinet front and discharge air grille can be cleaned
with a water dampened cloth. Under no circumstances
should hydrocarbon-based cleaners (e.g. acetone,
benzene, naphtha gasoline, etc.) or ammonia based
cleaners be used to clean the front or air grilles. Use care
when cleaning the control area.
Y E AR LY M AI N T E N A N C E A N D
CLEANING
NOTE: Use a mild biodegradable detergent when
cleaningtheunit. Special caremust betaken to protect the
unit's control board and other electrical components from
getting anywater on them while cleaning. The use of harsh
or caustic cleaning agents or materials such as bleach or
coil cleaners that are not designed for PTAC products will
cause damage or deterioration of the aluminum fin or coil
material and is not recommended. Care must be taken not
tobendthealuminumfinstock.
RoutinescheduledMaintenance
To achieve continuing top performance and high efficiency,
establish a “once a year" cleaning/inspection schedule for
the unit. Take the unit out of the sleeve and thoroughly
clean and rinse. Be sure to include in the yearly cleaning
the evaporator coil, and condenser coil, basepan, and
drainpassages.
Scheduled maintenance can be accomplished by either
qualified local maintenance staff or by an authorized
servicer. Theymust follow the instructions described in this
manual.
Adverse Operating Conditions Maintenance
Units operating in dusty or corrosive locations; i.e.
dusty construction site or sea coast, must be cleaned
more often. A minimum of four (4) times a year will
maintain proper operational conditions and protect unit
components.
Wall sleeve
Clean the wall sleeve while cleaning the unit. The
caulking around the sleeve should be checked to make
sure that any potential air and water openings around
the sleeve are properly sealed. The wall sleeve's level
should also be rechecked. Proper leveling for most
installations are a 1/4 bubble tilt to the outside and
level from right to left. Contact your sales person for
detailed maintenance or cleaning instructions.
CAUTION!
DO NOT USE COMMERCIAL GRADE COIL CLEANERS. SOME
OF THESE CLEANERS MAY CONTAIN ETHYLENE DIAMINE
TETRACETIC ACID (EDTA) WHICH CAN SHORTEN THE LIFE
OF THE CONDENSER COIL.
BasepanandCondensercoil
Before cleaning the base pan and condenser coil, turn
OFFunitmodeswitchanddisconnectpowertotheunit.
To disconnect power, either unplug the power cord at the
wall outlet or subbase, or disconnect power at the fuse box
orcircuitbreaker
1. Create a water tight seal by tightly covering the entire
control panel area and fan motor with plastic. Creating this
seal prevents water from entering the control area or the
fanmotoranddamagingtheunit.
2. Spray condenser coil and base pan down with water.
Next spray a mild biodegradable detergent onto the
condensercoilandbasepan. Letsetforfive(5)minutes.
3. Rinsecondensercoilandbasepanwithwateragain.
NOTE: Ensure water pressure is no higher than that of an
ordinarygardenhoseandthewatertemperaturenohigher
than120℉.

-13-
4. Tilt the non-compressor side of the unit up no higher
than 45 degrees and allow water to drain out the other side
oftheunit.
5. Remove excess water left in the base pan by wiping the
basepanwithadrycloth.
6. Remove the water-tight seal from the motor and
control panel area.
7. Reinstall unit back into wall sleeve.
8. Allow unit to dry for 24 hours before reapplying power.
Whenpowerisreappliedtestunitforproperoperation.
9. Place a non-acidic algaecide in the base pan to inhibit
bacteria growth. Ensure the algaecide is compatible with
wetcoiloperationandisnotcorrosivetothecoil.
CAUTION!
HIGH PRESSURE AND HIGH TEMPERATURE CLEANING IS
NOT RECOMMENDED.
DOING SO COULD DAMAGE THE ALUMINUM FIN STOCK
AND ELECTRICAL COMPONENT.
ClearanceCheck
Clearances around the unit should also be checked to
make sure that the intake air and discharge air paths have
not become blocked or restricted. A minimum of eight
inches clearance is needed from unit to furniture, beds, or
other objects for proper operation. Restricted discharge or
intake airwill reduce the unit's operational performance. In
severe airflow restrictions damage can occur to unit
components such as the compressor, electric heater or fan
motor.
NORMAL OPERATING SOUNDS
ANDCONDITIONS
Watertricklingsounds
Water is picked up and distributed over the coil. This
improvestheefficiencyandhelpswithwaterremoval.
Waterdripping
Water will collect in the base pan during high humidity
days. This can cause overflow and drip from the outside of
theunit.
Airsounds
The fan cycle switch sets the operational mode of the fan.
In the ON position the fan will run continuously whenever
power is applied in this mode. In the AUTO position, the
fan will cycle on and off with the compressor or electric
heater.
Startingdelay
You may notice a few minutes delay in the starting if you
try to restart the unit too soon after turning it off or if you
adjust the thermostat right after the compressor has
shut off. This is due to a built–in delay to protect the
compressor.
Buzzer Response
The buzzer will chime “Di”(0.1 sec) as response when
receiving the effective order from key pad control and
remotecontrol.

-14-
DIAGNOSTIC CODES & SOLUTIONS
The Diagnostic Maintenance provides detailed information on PTAC control operation and operational status including
presentmodes,failures,airflowrestrictionwarnings,operating temperatures,andpastfailures.
Failure code
Content of defect
Solutions
E1
Communication failure between
indoor unit and outdoor unit
Check the communication cables, make sure they are
firmly connected. If the cables are broken, replace them.
E2
Indoor ambient temperature
sensor fault
Check the sensor’s plug is firmly connected. If the sensor
is broken, replace it.
E3
Indoor coil temperature sensor
fault
Check the sensor’s plug is firmly connected. If the sensor
is broken, replace it.
E4
Indoor outlet temperature sensor
failure or Indoor outlet air over
heat protection in Electric heating
mode
Check if the indoor fan is running good and make sure no
obstacle that blocks the air circulation.
Check the sensor’s plug is firmly connected. If the sensor
is broken, replace it.
E5
IPM protection, include heat sink
over heat protection
Make sure indoor and outdoor units vents are not
blocked, indoor fan and outdoor fan are running well
and compressor will not overload. After removing any
fault, power the unit on again for rest.
E6
Outdoor ambient temperature
sensor fault
Check the sensor’s plug is firmly connected. If the sensor
is broken, replace it.
E7
Outdoor coil temperature
sensor fault
Check the sensor’s plug is firmly connected. If the sensor
is broken, replace it.
E9
Compressor discharge
temperature fault
Check the sensor’s plug is firmly connected. If the sensor
is broken, replace it.
EC
DC compressor starting failure or
compressor driving fault
ChecktheDIPswitchesonthemainboard(3-position,in
redcolor)iscorrect,itmustmatchesthewiringdiagram.
Makesurethecompressorpowerwiresisfirmlyconnected.
EH
Indoor EEPROM fault, include
EEPROM communication fault or
data verification error
Check the EEPROM chip is firmly plugged. If still not
solve, replace the chip.
P1
Overheatatindoorcoilprotection
inHEATING(overloadinheating).
Overheatatoutdoorcoilprotection
inCOOLING(overloadatcooling).
Make sure indoor and outdoor unit vents are not blocked
and indoor fan and outdoor fan are both working well.
Clear the air filter and the condenser after a long time use.
P2
DC inverter module overheat,over
current protection
Makesureindoorandoutdoorunitventsarenotblocked
andindoorfanandoutdoorfanarebothworkingwell. Check
theDIPswitchonthemainboard(3-position,in redcolor)is
correct,itmustmatchesthewiringdiagram. Makesurethe
compressorpowerwiresisfirmlyconnected.
P4
Compressordischargeoverheat
protection(orcompressoroverheat)
Makesureindoorandoutdoorunitventsarenotblocked
andindoorfanandoutdoorfanarebothworkingwell.
ChecktheDIPswitchonthemainboard(3-position,in
redcolor)iscorrect,itmustmatchesthewiringdiagram.
P7
Over voltage or under voltage
protection
Make sure the power supply is within the requirement
(AC208/230V -15%+10%) .If power supply is OK, but still
not solved, replace the inverter IPM.

TROUBLESHOOTING
POSSIBLE CAUSES
SOLUTIONS
UNIT DOES NOT START
●Unit may have become unplugged
●Fuse may have blown
●Circuit breaker may have been tripped
●Unit may be off or in wall thermostat mode.
Check section on SENIOR OPERATION to verify
dipswitches are set properly.
● Unit may be in a protection or diagnostic failure
mode. See section on diagnostic codes.
●Check that plug is plugged securely in wall receptacle.
Note :Plug has a test/reset button on it. Make sure that the
plug has not tripped.
●Replace the fuse.
●Reset circuit breaker.
●Turn unit on (bottom right button on keypad).
Note: If the unit turns on, the LED will be green. If the unit is
off, the LED will be red. If there is no LED on, there is a
problem with power or damage to the control.
DISPLAY HAS STRANGE NUMBERS/CHARACTERS
ON IT
●The unit may be in a diagnostic condition. Check
diagnostic codes --- checking Control section to determine
if unit has had a failure.
●The unit may be set for ° C (instead of ° F), see the
SENIOR OPERATION.
UNIT MAKING NOISES
●Clicking, gurgling and whooshing noises are normal during
operation of unit.
UNIT NOT COOLING / HEATING ROOM
●Unit air discharge section is blocked
●Temperature setting is not high or low enough
Note: Setpoint limits may not allow the unit to heat or
cool the room to the temperature desired. Check
section on dipswitch settings.
●Unit air filters are dirty.
●Room is excessively hot or cold when unit is started
●Vent door left open
●Unit may be in a protection or diagnostic failure mode.
Check section on Intelligent Self --- checking Control.
●Compressor is in time delay. There is a protective time
delay (approx . 3 minutes) on starting the compressor
after a power outage(or restarting after it has been
turned off ), to prevent tripping of the compressor
overload.
●Make sure that curtains, blinds or furniture are not restricting or
blocking unit airflow.
●Reset to a lower or higher temperature setting.
●Remove and clean filters.
●Allow sufficient amount of time for unit to heat or cool the room.
Start heating or cooling early before outdoor temperature, cooking
heat or gatherings of people make room uncomfortable.
●Close vent door.
●Check dipswitch settings for desired comfort.
●Wait approximately 3 minutes for compressor to start
WATER DRIPPING OUTSIDE
●If a drain kit has not been installed, condensation run off
during very hot and humid weather is normal. See Note 2. If
a drain kit has been installed and is connected to a drain
system, check gaskets and fittings around drain for leaks
and plugs.
WATER DRIPPING INSIDE
●Wall sleeve is not installed level
●Wall sleeve must be installed level for proper drainage of
condensation. Check that installation is level and make any
necessary adjustments.
ICE OR FROST FORMS ON INDOOR COIL
●Low outdoor temperature
●Dirty filters
●When outdoor temperature is approximately 55°F
(12.8°C) or below, frost may form on the indoor coil when
unit is in Cooling mode. Switch unit to FAN operation until
ice or frost melts.
●Remove and clean filters.
COMPRESSOR PROTECTION
●Power may have cycled, so compressor is in a restart
protection.
●Random Compressor restart—Whenever the unit is
plugged in, or power has been restarted, a random
compressor restart will occur. After a power outage, the
compressor will restart after approximately 3 minutes.
●Compressor Protection —To prevent short cycling of the
compressor, there is a random startup delay of 3 minutes
and a minimum compressor run time of 3 minutes