Carrier 38HDV009 Dimensions and installation guide

38H DV,40QNC009,012
Cooling Only
38QRV,40QNQ009,012
Heat Pump
Duct-Free Systems
Installation, Start-Up and
Service Instructions
CONTENTS
Page
SAFETY CONSIDERATIONS ...................... l
GENERAL ........................................ ]
INSTALLATION ................................ 1-12
Step 1 -- Complete Pre-lnstallation Checks ...... l
•UNPACK UNITS
• INSPECT SHIPMENT
•CONSIDER SYSTEM REQUIREMENTS
Step 2 -- Mount Unit ............................. 6
•MOUNTING OUTDOOR UNqT ON GROUND
• MOUNTING OUTDOOR UNIT ON ROOF
• MOUNTING INDOOR UNIT ON WALL
Step 3 -- Complete Refrigerant Piping
Connections ................................... 7
•INDOOR UNITS
•OUTDOOR UNITS
• MAKE PIPING SWEAT CONNECTIONS
• AIR PURGING AND LEAK TEST
Step 4 -- Make Electrical Connections ........... 9
START-UP ....................................... 13
SERVICE ........................................ 13
MAINTENANCE ................................. 14
TROUBLESHOOTING .......................... 14,15
SAFETY CONSIDERATIONS
Installing and servicing air-conditioning equipment can be
hazardous due to system pressure and electrical components.
Only trained and qualified service personnel should install or
service air-conditioning equipment.
Untrained personnel can perform basic maintenance, such
as cleaning and replacing filters. All other operations should be
performed by trained service personnel. When working on air
conditioning equipment, observe safety precautions in litera-
ture, tags, and labels attached to unit.
Follow all safety codes. Wear safety glasses and work
gloves. Use quenching cloth for brazing operations. Have fire
extinguisher available. Read these instructions thoroughly.
Consult local building codes and the National Electrical Cede
(NEC) for special installation requirements.
GENERAL
These instructions cover the installation, start-up and
service of cooling only and heat pump duct-free systems.
INSTALLATION
Step 1 -- Complete Pre-lnstallation Checks
UNPACK UNITS (See Fig. l) -- Move the unit to final
location. Remove units from carton, being carefld not to
damage service valves and grilles. See Tables 1A and IB for
installation materials included in shipment_
40QNC,QNQ
Before installing or servicing system, always turn off main
power to system. Them may be more than one disconnect
switch. Turn off accessory heater power ff applicable. Elec-
trical shock can cause serious personal injury.
38HDV,QRV
Fig. 1 -- 38HDV, QRV and 40QNC,QNQ Units
Manufacturer reserves the right to disconbnue, or change at any time, specifications or designs wilhout no13ceand without incuning obligations,
Book 1 4Catalog No. 07-38H40Q01-SI Pdnted in U.S.A. Form 38H,Q/40Q-1SI Pg 1 24)6 Replaces: New

Table 1A -- Installation Materials -- Included In Shipment
DESCRIPTION
S°rews, 5xL25 _
Mounting Rubber
Wireless Remote Control
Mounting Bracket
QTY
1
2
5
4
USAGE
For indoorunit installation.
For affixingunitand hangingbracket.
For wall hanging bracket installation.
For wireless remote control mountingbracke_ installation,
For outdoor unit installation.
For wireless remote control installation.
Table 1B-- Installation Materials -- Field-Supplied
NAME
Connection Pipe
Wall Sleeve
Wall Cap
Finishing Tape
Fastening Tape
Pipe Insulation
Drain Hose
Sealer Putty
Power Supply Cable
Electrical Connecting Cable Between
Indoor and Outdoor Unit
LEGEND
AWG -- American Wire Gage
NEC -- National Electrical Code
SPECIFICATIONS
009: 3/ain. (Mixed Phase)P/_ in. (Liquid)
012: 1/2in. (Mixed Phase)P/4 in, (Liquid)
PVC Film
5/8in.
AWG 14 or higher
Cable Type: AWG 14 synthetic rubber insulation with Neoprene coating,
according] to NEC codes.

INSPECT SHIPMENT--File a claim with the shipping
company if shipment is damaged or incomplete. Check the unit
nameplates to ensure units match job requirements.
CONSIDER SYSTEM REQUIREMENTS -- Consult local
building codes and NEC for special installation requirements.
Use only designated indoor units with outdoor units. See
Tables 2-3B.
Table 2 -- Matching Indoor Units to Outdoor Units
OUTDOOR UNIT COOLING ONLY OR
HEAT PUMP INDOOR UNIT
38HDV009,012 Cooling Only 40QNC008,012
38QRV009,012 Heat Pump 40QNQ009,012
See Fig. 2 for unit dimensions. Allow sui%cient space for
airflow clearance, wiring, refrigerant piping, and servicing
units. See Fig. 3.
Locate outdoor units so that condenser airflow is unrestrict-
ed on both sides. Refer to Fig. 3.
Outdoor Units (38HDV, QRV) -- Unit may be mounted on a
level pad directly on base legs or mounted on raised pads at
support points.
Avoid mounting die unit in areas that are too close to heat
radiation, vapor or flammable gas, or in dusty areas.
Indoor Units (40QNC,QNQ) -- Avoid mounting the unit in
areas that are:
•exposed to direct sunlight
•too close to heat sources
• too close to humid conditions
• located in an area with oily ambient conditions.
Table 3A -- Outdoor Unit Physical Data
38HDV, QRV
NOMINAL CAPACITY (Btuh)
OPERATING WEIGHT (Ib)
REFRIGERANT TYPE
METERING DEVICE
CHARGE (Ib)
OPERATING LIMITS
Heating (Min/Max)
Cooling (Min/Max)
OUTDOOR FAN
Rpm/Cfm
Diameter (in.)
No. Blades
Motor (Hp)
OUTDOOR COIL
Face Area (sq ft)
No. Rows
FPI
REFRIGERANT LINES
Connection Type
Mixed Phase Line (in.) OD
Vapor Line (in.) OD
Max Length (ft)
Max Lift (ft)
Max Drop (ft)
COMPRESSOR
Manufacturer
Model
Type
Oil Charge (oz)
Accumulator
CONTROLS
Control Voltage
System Voltage
009* 012
9,000 12,00O
73 82
R-410A
Capillar,/Tube
1.6 I2.1
I
14 F/65 F wb, 75 Fdb
59 F/110 F
800/1000 800/900
15.7 15.7
3 3
0.08 0.08
4.6 4.6
1 2
20 20
Flare Flare
1/4 1/4
% 112
50 50
35 35
35 35
Carrier
TAS084 Ro_ary TAS113
15 Ye]s 19
230
230
LEGEND
db -- dry bulb
FPI -- Fins Per Inch
wb -- wet bulb
*If refrigerant lines are extended past 35 ft refrigerantmust be added
at 0.3 oz perft of refrigerant line added.
Table 3B -- Indoor Unit Physical Data
40QNC,QNQ
NOMINAL CAPACITY (Btuh)
OPERATING WEIGHT (Ib)
MOISTURE REMOVAL RATE
(Pints/hr)
REFRIGERANT
Control (Cooling)
Control (Heating)
Factory Charge (Ib)
INDOOR FAN
RplrdCfm High
Rpm/Cfm Medium
RpndCfm Low
Motor Watts
Blowers Quantity...Size (in.)
INDOOR COIL
Face Area (sq ft)
No. of Rows
Fins/in,
Circuits
FILTERS
Quantlty...Size (in.)
AIRSWEEP
Horizontal
Vertical
OPERATING LIMITS
Heating (Min/Max)
Cooling (Min/Max)
CONTROLS
Remote Controller Options
Diagnostics
Defrost Method
Timer Mode
Warm Start Feature
Test Mode
Freeze Protection
Dehumidification Mode
Fan Mode
Auto Changeover
Auto Restart
Control Voltage
System Voltage
REFRIGERANT LINES
Connection Type
Mixed Phase Line (in.) OD
Vapor Line (in.) OD
Max Length (ft)
Max Lift (Fan Coil Above)
(ft)
Max Lift (Fan Coil Below)
(ft)
CONDENSATE DRAIN
SIZE (in.)
009 I 012
9,000 12.000
19
2.4 I 2.8
R-410A
Capillary tube at Outdoor Unit
Capillary tube at Outdoor Unit
1.6 I 2.1
Direct Drive Cectrifuqalal
1000/230 I11307340
800!170 I 850/235
600/135 I 600/135
59 I 59
1...4.0 x24.5 I t ...4.0 x 24.5
Copper Tube, Aluminum Fin
1.7 1.7
2 2
20 20
2 2
Cleanable
11 x 12V4
Manual
Automatic
--/81F db
59 F wb, 70 F db/74 F wb,
90 F db
integrated Microprocessor
Wireless
Yes
Demand Defrost
Yes
Yes
Yes
Yes
Yes
High/Medium/Low/Auto
Yes
Yes
230
230
Flare Flare
1/4 114
% 1/2
50 50
30 30
25 35
s/sOD, 7/16 ID
LEGEND
db -- dry bulb
FPI -- Fins Per Inch
wb -- wet bulb
3

A
40QNC, QNQ
40QNC,QNQ
DIMENSIONS (in.)
A 31
B 10.2
C 7.7
B
3/8 in.
3_ in.
38HDV, QRV
Fig. 2 -- Unit Dimensions
38HDV,QRV
DIMENSIONS (in.)
A 29.5
B 23.25
C 11
D 18.5
E 5.5
F 12.25
4

4in.
rain, mln.
mln,
I
I_,_,_-
40QNC,QNQ UNITS
/
__,IB_4!, _'
A
F_
38HDV, QRV UNITS
DIMENSIONS (in.)
A 2
B 4
C16
D 2
E 12
F 16
Fig. 3 -- Unit Clearances
,_-._ _ _ _,,_ D
+!!, + _I
E D
o
5

Step 2 -- Mount Unit
MOUNTING OUTDOOR UNIT ON GROUND
(Fig. 4) -- Mount unit on a solid, level concrete pad. Position
unit so water or ice from roof does not fall directly onto unit. If
conditions or local codes require unit be fastened to a pad,
4 field-supphed tiedown bolts should be used and fastened
through slots provided in unit mounting feet.
If the unit will be located in areas where heavy snowfall
may occur, raise the level of the unit to 8 in. above the usual
snow level.
MOUNTING OUTDOOR UNIT ON ROOF -- Mount unit
on a level platform or frame at least 6 in. above roof surface.
Isolate unit and tufting from structure. Refer to Fig. 5.
ff the unit will be located in areas where heavy snowfall
may occur, raise the level of the unit to 8 in. above the usual
snow level or use an outdoor unit bracket kit.
MOUNTING INDOOR UNIT ON WALL (Fig. 6-8) -- Be-
fore mounting the indoor unit on the wall with a wall hanging
bracket, consider how the indoor unit will be connected to the
refrigerant pilPmg. The indoor unit can be connected in four
ways. Refer to Fig. 6 for connection opuons. When the piping
is connected to points 1, 2 or 4, remove the knock-out either at
the side or at the bottom of the unit.
The indoor units are mounted on the wall with a wall hang-
ing bracket. Position the wall hanging bracket so that it is flush
with the wall. See Fig. 8 and 9 for service clearances.
I I
i, 18.5In. ,j
i i
ii
ii
\No. 4 Pins
1/4 in.
Fig. 4 -- Mounting Outdoor Unit On A Pad
@
Fig. 6 -- Indoor Unit Piping Configurations
Sin. rain.
18in.
12 in. ..rain.
Plumb line
• o . . . • , • screw
Fig. 7 -- Installing the Wall Bracket
O
e_) 6in. rain.
_) Gradient.
_) Gravel-filled trench.
Fig. 5 -- Mounting Outdoor Unit on Roof
A/2_in. 1 1/2 in 91/2 in.
95 in.
18 in. 4I/2 in.
\B I
41/2 in.
Fig. 8 -- Wall Bracket Dimensions
6

Drill at Slope
Indoor side
0 Outdoor side
o
Oo°O
_1/4 to 1/2 in. lower
oOoe
o o _
Fig. 9 -- Placement of Connection Piping
Complete the following when installing the wall hanging
bracket:
1. Before installing the wall hanging bracket to the wall re-
move it from the indoor unit by pushing at the indicated
pressure points at the bottom of the unit.
2. Install the wall hanging bracket in a location that is strong
enough to withstand the weight of the unit.
3. Install the wall hanging bracket so that it is level. Use a
plumb line if necessary.
NOTE: Be sure that the wall hanging bracket is level. If the
wall hanging bracket is not level water will leak from the
indoor unit
4. Fasten the wall hanging bracket to the wall with 4 or
more screw anchors through the holes near the outer edge
of the bracket.
5. Install the wall hanging bracket flush to the wall, and en-
sm'e the bracket does not move.
6. If the unit is removed from the wall hanging bracket after
installing it on to the wall, remove it by pushing up on the
indicated marks at the bottom of the unit body.
Step 3 -- Complete Refrigerant Piping
Connections
INDOOR UNITS- When running the piping for indoor
units the piping can be connected as rear piping or side or bot-
tom piping. Refer to Fig. 8 and 9.
Rear Pinin_ -- Route the piping behind the indoor unit so that
the piping is concealed by the unit. For rear piping installation
drill a 2V2 in. diameter hole in the wall at point Aor B in
Fig. 8. Drill the hole at a slope so that the outside end is lower
(V4 in. to I/2in.) than the inside end to ensure optimal drainage.
Cut the wall sleeve to mateh the wall thickness and pass the
pipe through the hole.
Side or Bottom Piping -- Remove the knockout in the unit
and pass the piping through the wall. The pipe should slope
downward and away from the unit to ensure optimal drainage.
Routing the Drain Hose and Refrigerant Piping -- The drain
hose and drain cap are assembled as shown in Fig. 10 in the
factory. To do right-side ((9), right-bottom (_) or right-back
((9) piping in Fig. 6 draw the drain hose to right-side piping
direction. (It is not always necessary to exchange the location
of drain hose and drain cap.)
1. Tie together the refrigerant piping, the drain hose, and the
electrical cormection wire.
2. Route the refrigerant piping in the required direction, and
bend carefully avoiding pipe deformation.
3. Bind the drain hose and the electrical connection wire
together with fastening tape.
4. The drain hose should be at the bottom. See Fig. 1! and
12.
5. For left-hand piping, fit the pipes and the wiring into the
recess at the back of the uniL
Fig. 10 -- Location of Drain Hose and Cap
®
0 Indoor unit piping
(9 Left-hand piping
Bind with fastening tape
Drain hose
Connection wire
Fig. 11 -- Location of Piping
_) Indoor unit piping
Drain hose
(9 Connection wiring
Fig. 12 -- Location of Piping, Hose and Wiring
7

Installing the Indoor Unit Body to the Wall Hanging
Bracket
1. Pass the pipes through the wall sleeve and then hook the
indoor unit body on top of the wall hanging bracket.
2. For left-hand piping, bang the unit on top of the wall
hanging bracket and incline the unit using a tool such as a
screwdriver set between the middle area of the body and
bottom right of the wall hanging bracket. Connecting the
pipe can be done more easily if the unit is inclined.
3. F-LXthe bottom part of the unit to the wall hanging bracket
by pushing it carefully until the two bracket hooks fit into
the marked places at the base of the unit until it snaps into
place. Refer to Fig. 13.
NOTE:
Do not crush or kink the indoor piping. Avoid sharp bends
with a bend radius of less than 4 inches.
Do not over bend the same part of the pipe frequently.
•Do not remove the flare nut from the indoor unit pipe until
the piping is connected.
through a wall, seal the opening so that vibration is not transmit-
ted to structure. Leave some slack in refrigerant tubes between
structure and outdoor unit to absorb vibration.
MAKE PIPING SWEAT CONNECTIONS -- Remove plas-
tic caps from liquid and suction service valves. Use refrigerant
grade tubing.
Position tube end downward and cut the tube to the request-
ed length. Remove the burrs with a reamer. See Fig. 14.
NOTE: Oil in the compressor is extremely susceptible to mois-
ture absorption. Keep ends of tubing sealed during installation.
Remove flare nuts from the unit connections and place them
on the tube end. Flare the tube with the flaring tool. The flare
end must not have any burrs or imperfections. The length of the
flared walls must be uniform. See Fig. 15.
Lubricate the tube end and thread of the flare fitting with
antifreeze oil. "tighten the fitting several turns, then tighten it
fully with two wrenches by applying the tightening torque indi-
cated in Table 4 and Fig. 16.
Hole
?
/
!
/
/
Insufficient tightening torque will cause gas leaks. Over-
tightening the fittings will damage the tube flaring and
cause gas leaks. Equipment damage and personal injury
may result.
NOTE: Unit is shipped with R-410A factory charge indicated
on nameplate.
AIR PURGING AND LEAK TEST -- Only use a vacuum
pump to purge air from the piping. Refer to Fig. 17.
IMPORTANT." Do not use the system compressor as a
vacuum pump.
IMPORTANT: Do not use the unit refrigerant gas to purge I
the connecting pipes. I
Retainer Retainer
Clip Clip
]LIfL _lrl.
Fig. 13- Wall Hanging Details
OUTDOOR UNITS- Outdoor units may be connected to
indoor units using field-supplied tubing of refrigerant grade
and condition. See Table 3A for correct line sizes. Do not use
less than 10 ft of interconnecting tubing.
DO NOT BURY MORE THAN 36 IN. OF REFRIGER-
ANT PIPE IN THE GROUND. If any section of pipe is
buried, there must be a 6-in. vertical rise to the valve
connections on the outdoor unit. If more than die
recommended length is buried, refrigerant may migrate to
cooler, buried section during extended periods of system
shutdown. This causes refrigerant slugging and could
possibly damage the compressor at start-up.
If either refrigerant tubing or indoor coil is exposed to
the atmosphere, the system must be evacuated following good
refrigeration practices.
Run refrigerant tubes as directly as possible, avoiding
unnecessary turns and bends. Suspend refrigerant tubes so they
do not damage insulation on vapor tube and do not transmit
vibration to structure. Also, when passing refrigerant tubes
Remove the caps from the valves. Create a vacuum with a
vacuum pump connected to the ser-(lce connection of the
suction shut-off valves completely shut until a 50 Pa vacuum
has been reached.
Open the mixed phase valve for 3 seconds, then quickly
shut it to check for possible leaks.
Replace caps and check for leaks using a leak detector
spe(lfiC for R-410A refrigerant.
After the leak test, fully open the three-way valves.
Table 4 -- Tightening Torque
VALVE SIZE FLARE NUT (in.-Ib)
1/4in. 159
s/sin. 372
112in. 487
Fig. 14- Removing Burrs

Fig. 15 -- Flared Walls are Equal
'On0"=r=ro °\\
Fig. 16- Tightening Connections
Step 4 -- Make Electrical Connections
Unit cabinet must have an uninterrupted, unbroken electri-
cal ground m minimize the possibility of personal injury if
an electrical fault should occur. This ground may consist of
eleclrical wire connected to unit ground lug in control com-
partment, or conduit approved for electrical ground when
installed in accordance with NEC, and local electrical
codes. Failure to follow this warring could result in the
installer being liable for the personal injury of others.
Unit failure as a result of operation on improper line
voltage orexcessive phase imbalance constitutes abuse and
may cause damage to electrical components. Such opera-
tion would invalidate any applicable Carder warranty.
Before performing service or maintenance, be sure main
power switch is turned OFF and indoor blower and outdoor
fan have stopped. Failure to do so may result in electrical
shock or injury from rotating fan blades.
POWER WIRING (Fig. 18-20)- Unit is factory wired for
voltage shown on nameplate. Provide adequate, fused discon-
nect switch within sight from unit, readily accessible, but out of
reach of children. Provision for locking the switch open (off) is
advisable to prevent power from being turned on while unit is
being serviced. Disconnect switch, fuses, and field wiring must
comply with the NEC and local code requirements. Use copper
wire only between the disconnect switch and unit. Use mini-
mum 60 C wire for the field power connection.
Open the outdoor unit control box panel (Fig. 20) and con-
nect the indoor and outdoor units. Connect the wires through
the terminals as shown on the unit label diagram and in
Fig. 18 and 19 and Tables 5A and 5B. Unit must be grounded.
I@
0 Three-way valve (mixed-phase) (_ Flare nut
(_ Needle valve
_) Valve cap
Valve needle
_) Allen (hex. head) wrench
(_) Two-way valve (liquid)
Fig. 17 -- Air Purging
_) Liquid line (small diameter)
(_ Mixed-phase line (large diameter)
Indoor unit
Outdoor unit
Vacuum pump
9

CON3
[DC Th BRN
RA Th
O]5PLAy /RECE[VER 1
PC8 A55'Y
CON_
CONTROL PCB ASS'Y
TRAN_, _ov
3.1SA
c271__
RED BLU YEL
BLU BLK
I
I
I
I
V¢$T _ l"a
INVERTER
MODULE
LEGEND
CDU -- Condenser Unit
CN -- Connector
COMP -- Compressor
CON -- Connector
DIS TH -- Discharg_eThermistor
EMI -- Electro _lagnetic interference
FCU -- Fan Coil Unit
GND -- Ground
HS -- Hall (Rpm) Sensor
IDC Th -- Indoor Coil Thermistor
IDFM -- Indoor Fan Motor
ODA TH -- Outdoor Air Thermistor
ODC TH -- Outdoor Coil Thermistor
PCB -- Printed Circuit Board
RA Th -- Room Air Thermistor
STM -- Step Motor
TB -- Terminal Block
TP -- Thermal Protector
TRANS -- Transformer
VAR -- Varistor
-- Factory Wiring
.... Field Control Wiring
.... Field Power Wiring
--. -- Accessory or Optional Wiring
Fig. 18 -- 40QNQ009,012 Matched with 38QRV009,012 Typical Wiring Schematic

BRNC{
IDC Th_
RA I%("_ BLK
IDISPLAY /RECEIVER ]
pc8 ASS'Y
CON1
CONTROL PCB ASS'Y
TR_, 25ov
3.15A
0NGRY
208/230V
1PH <
L1
•L2e - - -
LEGEND
CDU -- Condenser Unit PCB -- Printed Circuit Board
COMP -- Compressor RATh -- Room AirThermistor
CON -- Connector STM -- Step Motor
DIS TH -- Discharge Thermistor TB -- Terminal Block
EMI -- Electro Magnetic Interference TP -- Thermal Protector
FCU Fan Coil Unit TRANS -- Transformer
GND -- Ground VAR -- Varistor
HS -- Hall (Rpm) Sensor Factory Wiring
IDC Th -- Indoor Coil Thermistor .... Field Control Wiring
IDFM -- Indoor Fan Motor
ODA TH -- Outdoor Air Thermistor .... Field Power Wiring
ODC TH -- Outdoor Coil Thermistor Accessory or Optional Wiring
INVERTER
MODULE
Fig. 19 -- 40QNC009,012 Matched with 38HDV009,012 Typical Wiring Schematic

SEE DETAIL ADETAIL A
Tit
Fig. 20 -- Open Outdoor Unit Control Box Panel
Table 5A -- 38HDV,QRV Electrical Data
38HDV, QRV
UNIT SIZE
0O9
012
V-PH-Hz
208/230-1-60
208/230-1-69
VOLTAGE
RANGE* COMPRESSOR OUTDOOR FAN MOTOR
Min Max RLA LRA FLA NEC Hp kW Out
187 253 3.7 42.3 6.8 0.082 0,06
187 253 4.7 57.9 0.6 0.082 0.06
LEGEND
FLA -- Full Load Amps
LRA -- Locked Rotor Amps
MCA -- Minimum Circuit Amps per NEC Section 439-24
MOCP -- Maximum Overcurrent Protection
NEC -- National Electrical Code
RLA -- Rated Load Amps (Compressor)
MCA MOCP
5.7 15
7.0 15
NOTES:
1. In compliance with NEC requirements for multimotor and combi-
nation load equipment (refer to NEC Articles 439 and 440), the
overcurrent protective device for the unit shall be fuse or
equipped with a breaker.
2. Motor RLA values are established in accordance with UL (Under-
writers Laboratories) Standard 465.
*Permissible limits of the voltage range at which unit will operate
satisfactorily. o t oo
/,tST_
Table 5B --40QNC,QNQ Fan Coil Electrical Data
40QNC,QNQ
UNIT SIZE
0O9
012
VOLTAGE RANGE*
V-PH-Hz Min Max
208/230-1-60 187 253
208/230-1-69 187 253
FAN
FLA Motor Power
(Watts)
0.28 48,0
0.28 58.3
POWER
MCA MOCP
0.35 15
0.35 t 5
MIN WIRE
SIZE
14
14
LEGEND NOTES:
FLA -- Full Load Amps 1. In compliance with NEG requirements for multimofor and combi-
MCA -- Minimum Circuit Amps per NEC Section 430-24
MOCP -- Maximum Overcurrent Protection
NEC -- National Electrical Code
RLA -- Rated Load Amps (Compressor) 2.
*Permissible limits of the voltage range at which unit will operate
satisfactorily.
nation load equipment (refer to NEC Articles 430 and 440), the
overcurrent protective device for the unit shall be fuse or
equipped witha breaker.
Motor RLA values are established in accordance with UL (Under-
writers Laboratories) Standard 465.
[2

START-UP
Preliminary Checks
1. Check that all internal wiring connections are tight and
that all barriers, covers, and panels are in place.
2. Field electrical power source must agree with unit name-
plate rating.
3. All ._-_rvicevalves must be open.
4. Crankcase heater must be tight on compressor crankcase
(if equipped).
Leak Test -- Field piping and fan coil must be leak tested
by pressure method. Use R-410A at approximately 25 psig
backed up with an inert gas to a total pressure not to exceed
245 psig.
NOTE: Leak detectors should be designed to detect HFC
(hydrofluorocarbon) refrigeranL
Evacuate and Dehydrate -- Field piping and fan coil
must be evacuated and dehydrated following good refrigera-
tion practices.
Start Unit with Operating Test -- Turn power on to
the unit. Insert bar,ties in remote control. Press the A and
the %_ buttons on the remote conlrol for 5seconds. The
remote control will be cleared and the time segment will dis-
play the Src 1=service test mode.
Press the _ button to transmit the service test signal to the
mail After the test has completed press the (_) button to leave
the test menu.
NOTE: When 30 seconds have elapsed and no buttons have
been pressed, the remote conlxol will automatically exit the test
menu and resume its normal operation.
Configuring Two Indoor Unit Remote Con-
trois -- If two indoor units are being installed in the same
room, working independently, two remote controls need to be
configured for proper operation.
UNIT CONFIGURATION -- Turn the unit off by pressing
the (_. Press and hold the M and _'_. buttons of the re-
mote control for more than 5 seconds. The display will be
cleared and the time segments will display the first configura-
tion item (rAdr=remote address) and the temperature segments
will display the default value of this configuration item
(Ab=control of both indoor units). Press A and Vto
change the default value to the new value of (a) or (b). Press the
=-._ button to transmit the new configuration to the unit. Press
the (D button to leave the configuration menu.
REMOTE CONTROL CONFIGURATION -- Turn the unit
off by pressing the (_) button. Press and hold the V and
_ buttons for more than 5 seconds. The display will be
cleared and the time segments will display the first configura-
tion item (CH--remote address) and the temperature segments
will display the default value of this configuration item
(Ab=control of both indoor units). Press Aand V to
change the default value to the new value of (a) or (b). Press the
_ button to transmit the new configuration to the unit.
Press the (D button to leave the configuration menu.
NOTE: When 30 seconds have elapsed and no buttons have
been pressed, the remote control will automatically exit the test
menu and resume its normal operation.
SERVICE
Before performing recommended maintenance, be sure
unit main power switch is turned off. Failure to do so may
result in electrical shock or injury form rotating fan blade.
Pumpdown Procedure -- The system may be pumped
down in order to make repairs on the low side without losing
complete refrigerant charge.
1. Attach pressure gage to suction service valve gage port.
2. Frontseat the mixed phase line valve.
The unit coils hold only the factory-designated amount of
refrigerant. Additional refrigerant may cause units to
relieve pressure through the compressor internal pressure
relief valve (indicated by a sudden rise of suction pressure)
before suction pressure reaches 20 psig. If this occurs, shut
off unit immediately then frontseat the suction valve and
remove and recover excess refrigerant following accepted
practices. Equipment damage may result.
3. Start unit and run until suction pressure reaches 5 psig.
4. Shnt unit off and frontseat suction valve.
5. Depressurize low side of unit and recover refrigerant
following accepted practices.
Filter Drier (Field Supplied) --Whenever the filter
drier is exposed to the atmosphere it must be replaced. Only use
factory specified liquid-line filter driers with rated working pres-
sures less than 600 psig.
NOTE: Do not install a suction-line filter drier in the mixed
phase line.
Refrigerant Charging
To prevent personal injury, wear safety glasses and gloves
when handling refrigerant. Do not overcharge system --
this can cause compressor flooding.
All units are shipped with the refrigerant charge listed on
nameplate.
NOTE: Do not vent or depressurize unit refrigerant to atmo-
sphere. Remove and recover refrigerant following accepted
practices.
13

MAINTENANCE TROUBLESHOOTING
Before performing recommended maintenance, be sure
unit main power switch is turned off. Failure to do so may
result in electric shock or injury.
1. Remove outdoor unit front panel by loosening holding
screws and lifting as shown in Fig. 21.
2. Carefully clean the coil with a vacuum cleaner from in-
side to outside.
3. Dust the inside of the fan compartment and the fan
blades.
4. Avoid any damage to the blades which may result in vi-
bration and noise.
5. Replace the front panel and tighten the screws.
Fig, 21 -- Removing the Front Panel
See Tables 6A-7 for troubleshooting information.
Fault Code -- Oncea failure occurs with the indoor unit in
operation, the green or orange LED on the indoor unit flashes
at intervals of 0.5 seconds. The fault code is deduced from the
number of times the green LED or orange LED flashes, block-
ing unit operation. Between one flash cycle and the next one, a
pause of 3 seconds elapses.
Table 6A -- Green LED (Indoor Unit Fault)
CODE
2
3
7
8
9
Continuous
DESCRIPTION
Room Air Sensor Fault
Indoor Unit Coil Sensor Fault
Indoor-Outdoor Units Communication Fault
Indoor Fan Motor Fauit
Power Line Monitoring Fault
Indoor Sensor Wirin_ Reversed
Table 6B -- Orange LED (Outdoor Unit Fault)
CODE
1
2
3
4
5
6
7
8
DESCRIPTION
Outdoor Sensor Fault
Indoor-Outdoor Units Mismatching
4-Way Valve Fault
Outdoor Fan Motor Fault
InverterControl Fault
inverterDrive Fault
Indoor-Outdoor Units Communication Fault
Outdoor Hi_lh-TemperatureProte_ion
14

Table 7 -- Troubleshooting
PROBLEM
Compressor and Fan of the Outdoor
Unit Will Not Start
Compressor Will Not Start, But
Outdoor Fan is Operating
Compressor Stops Due to
Overtemperature
Compressor Runs Continuously
POSSIBLE CAUSE
Unit not energized
Main switch isset to OFF
Main switch fuses are blown
Compressor cycling protection ison
Main power voltage istoo low
Electrical connections are too loose or are
wrong
iElectrical connections of compressor are loose
orwrong
Compressor burnt out; seized or protection
device on
Wrong refrigerantcharge in unit excessive or
low) or air or other noncondensable gasses in
the circuit
Main voltage istoo highortoo low
Condenser coil obstructed
Outdoor fan off
Wrong indoorunitthermistors
Refrigerant circuitclogged
Reversing valve faulty on heat pump models
Expansion device cloggedor covered with ice
Unit selected istoo smallfor application
requirements
Indoor temperature setting too lowortoo high
Outdoor unitfan faulty
Air or other noncondensable gasses in the
circuit
Obstructions at air intake or dirty indoor unit
filters
Outdoor fan isstopped
SOLUTION
Check the main power connection.
Check and put it to ON position.
Replace fuses.
Wait for 3 minutes.
Check and set to the correct voltage.
Check and tighten or correct connections.
Check and tighten or repair compressor.
Check for the cause and replace compressor if
necessary.
Drain refrigerant, evacuate and recharge.
CAUTION: Do notvent refrigerant to the atmosphere;
use refrigerant recovery equipment.
Check voltage setting and adjust if necessary.
Remove obstruction.
Check cause and resume operation or repair.
Replace thermistors.
Check and remove obstructions.
Replace reversing valve.
Drain refrigerant,evacuate and recharge.
CAUTION: Do not vent refrigerant to the atmosphere;
use refrigerant recovery equ=pment.
Contact a qualified service technicianfor a system
evaluation.
Check temperature setting.
Replace outdoor fan.
Drain refrigerant,evacuate and recharge.
CAUTION: Do not vent refrigerant to the atmosphere;
use refrigerant recovery equipment.
Remove obstruction and/or clean filter.
Frequent Ice-Build-Up on Outdoor Check cause and repair.
Coil
Discharge Pressure Too High Outdoor coil dirty orobstructed
Condenser fan faulty
Indoor temperature setting too lowor too high
Air or other noncondensable gasses inthe
circuit
Indoor temperature setting too highor too low
Outdoor coil dirty or obstructed
Indoor unit air filter dirty
Indoor temperature setting too highor too low
Reversingvalve faulty or internal leak
Indoortemperature setting too highor too
Evaporatorcoil covered with ice
Expansion device or suction lineclo()ged
Outdoor fan does notstop duringdefrost
)edods
Electrical connection loose
Fan motor burn out
Fan bearing seized
Expansion device clogged or covered with ice
Discharge Pressure Too Low
Suction Pressure Too High
Suction Pressure Too Low
Outdoor Fan Cycling Due to
Over-Temperature Protection
Clean or remove obstructions.
Replace condenser fan.
Check temperature setting.
Drain refrigerant,evacuate and recharge.
CAUTION: Do not vent refrigerantto the atmosphere;
use refrigerant recovery equipment.
Check temperature setting.
C_eanor remove obstructions.
Clean filter.
Check temperature setting.
Replace reversingvalve.
Check temperature setting.
Air circulationon the evaporator notsufficient;check
and repair.
Check and repair.
Check electrical parts.
Check connections.
Replace.
Check and repair.
Drain refrigerant, evacuate and replace.
CAUTION: Do notvent refrigerantto the atmosphere;
use refrigerant recovery equipment.
15

CopyrLght2006 Carrier Corporation
Manufacturer reserves the right to discon_nue, or change at any time, specifications or desl_lns without notice and without incurring obli0aUons.
Book 1 4 Catalog No. 02-38H40Q01 _Sl Printed in U.S.A. Form 38H,Qi40Q-1SI Pg 16 2-06 Replaces: New