Midea DHMSHA, DHMSHAQ09XA3, DHMSHAQ12XA1, DHMSHAQ24XA3, DHMSHAQ30XA3 Installation Instructions Manual
...
DHMSHA
High Wall Ductless System
Sizes 09 to 36
Installation Instructions
TABLE OF CONTENTS
SAFETY CONSIDERATIONS........................................................2
PARTS LIST ....................................................................................3
SYSTEM REQUIREMENTS...........................................................4
WIRING ...........................................................................................4
Fig. 1 — Sizes 09K-36K
Fig. 2 — Remote Controller
DIMENSIONS..................................................................................5
CLEARANCES ................................................................................9
INSTALLATION TIPS....................................................................10
INDOOR UNIT INSTALLATION ..................................................10
ELECTRICAL DATA......................................................................11
CONNECTION DIAGRAMS..........................................................11
WIRELESS REMOTE CONTROL INSTALLATION ...................13
WIRED REMOTE CONTROL INSTALLATION..........................13
START-UP .......................................................................................13
TROUBLESHOOTING ...................................................................14
NOTES:
Read the entire instruction manual before starting the
installation.
Images are for illustration purposes only. Actual models
may differ slightly.
Specifications subject to change without notice.
SAFETY CONSIDERATIONS
Installing, starting up, and servicing air-conditioning equipment can
be hazardous due to system pressures, electrical components, and
equipment location (roofs, elevated structures, etc.).
Only trained, qualified installers and service mechanics should install,
start-up, and service this equipment.
Untrained personnel can perform basic maintenance functions such
as coil cleaning. All other operations should be performed only by
trained service personnel.
When working on the equipment, observe precautions in the literature
and on tags, stickers, and labels attached to the equipment.
Follow all safety codes. Wear safety glasses and work gloves. Keep
a quenching cloth and fire extinguisher nearby when brazing. Use
care in handling, rigging, and setting bulky equipment.
Read these instructions thoroughly and follow all warnings or
cautions included in the literature and attached to the unit. Consult
the local building codes and National Electrical Code (NEC) for
special requirements. Recognize safety information. This is the
safety-alert symbol . When you see this symbol on the unit and
in instructions or manuals, be alert to the potential for personal
injury. Understand these signal words: DANGER, WARNING,
and CAUTION. These words are used with the safety-alert
symbol. DANGER identifies the most serious hazards which will
result in severe personal injury or death. WARNING signifies
hazards which could result in personal injury or death. CAUTION
is used to identify unsafe practices which may result in minor
personal injury or product and property damage. NOTE is used to
highlight suggestions which will result in enhanced installation,
reliability, or operation.
WARNING
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury or death.
Before installing, modifying, or servicing system, main electrical
disconnect switch must be in the OFF position. There may be more
than 1 disconnect switch. Lock out and tag switch with a suitable
warning label.
WARNING
EXPLOSION HAZARD
Failure to follow this warning could
result in death, serious personal injury,
and/or property damage.
Never use air or gases containing oxygen
for leak testing or operating refrigerant
compressors. Pressurized mixtures of air
or gases containing oxygen can lead to
an explosion.
CAUTION
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment damage or
improper operation.
Do not bury more than 36 in. (914 mm) of refrigerant pipe in the
ground. If any section of pipe is buried, there must be a 6 in. (152 mm)
vertical rise to the valve connections on the outdoor units. If more
than the recommended length is buried, refrigerant may migrate to the
cooler buried section during extended periods of system shutdown.
This causes refrigerant slugging and could possibly damage the
compressor at start-up.
2 Specifications subject to change without notice. IM-DHMSHA-02
PARTS LIST
Air Outlet
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TEMP
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P
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1
5
6
8
7
2
3
4
Interconnecting
Piping/wiring
Table 1 — Parts List
Part No. Part Name Qty
1 Indoor Unit 1
2 Mounting Plate 1
3 Mounting Screw A ST3.9x25-C-H 5
4 Anchor 5
5 Air Filter 1
6 Wireless Remote Control 1
7 Wireless Remote Control Holder 1
8 Wireless Remote Control Mounting Screw B ST2.0x10-C-H 2
- Flare nuts for liquid and gas pipes 1
- Stencil (Mounting Template) 1
- Installation Instructions 1
- Owner's manual 1
- Warranty Card 1
- Carbon Filter 1
Fig. 3 — Parts List
NOTES:
- If the outdoor unit is higher than the indoor unit, prevent rain from flowing into the indoor unit along the connection
pipe by making a inverted trap in the connection pipe before it enters the wall to the indoor unit. This ensures that rain
drips from the connection pipe before it enters the wall.
- Piping and the interconnecting wiring are field supplied.
- The illustration above (Fig. 3) is only a sketch. Different models may be differ slightly.
The units listed in Table 2 are covered in these installation instructions.
Table 2 — Indoor Units
Description kBTUh V-Ph-Hz ID Model No.
High Wall Heat Pump
IM-DHMSHA-02 Specifications subject to change without notice. 3
12 115-1-60 DHMSHAQ12XA1
9 208/230-1-60 DHMSHAQ09XA3
12 208/230-1-60 DHMSHAQ12XA3
18 208/230-1-60 DHMSHAQ18XA3
24 208/230-1-60 DHMSHAQ24XA3
30 208/230-1-60 DHMSHAQ30XA3
36 208/230-1-60 DHMSHAQ36XA3
SYSTEM REQUIREMENTS
Allow sufficient space for airflow and unit service. See Fig. 8 — on page 9 for the minimum required distances between the unit and walls or
ceilings.
Piping
IMPORTANT: Both refrigerant lines must be insulated separately.
• Table 3 lists the pipe sizes for the indoor unit. Refer to the outdoor unit’s installation instructions for other allowed piping lengths and
refrigerant information.
Table 3 — Indoor Unit Pipe Sizes
UNIT SIZES
GAS PIPE
LIQUID PIPE
12K
(115V)
in 1/2 3/8 1/2 1/2 5/8 5/8 5/8
(mm) 12.7 9.52 12.7 12.7 16 16 16
in 1/4 1/4 1/4 1/4 3/8 3/8 3/8
(mm) 6.35 6.35 6.35 6.35 9.52 9.52 9.52
9K
(208/230V)
12K
(208/230V)
18K
(208/230V)
24K
(208/230V)
30K
(208/230V)
36K
(208/230V)
WIRING
All wires must be sized per NEC (National Electrical Code) or CEC
(Canadian Electrical Code) and local codes. See the rating plate and/
or the installation instructions of the compatible outdoor unit for MCA
(minimum circuit amps) and MOCP (maximum over current
protection) to correctly size the wires and the disconnect fuse or
breakers respectively.
Recommended Connection Method for Power and
Communication Wiring:
The main power is supplied to the outdoor unit. The field supplied 14/
3 power/communication wiring from the outdoor unit to the indoor
unit consists of four (4) wires and provides the power for the indoor
unit. Two wires are high voltage AC power, one is communication
wiring and the other is a ground wire. Wiring between the indoor and
outdoor unit is polarity sensitive. The use of BX wire is NOT
recommended.
If installed in a high Electromagnetic field (EMF) area and
communication issues exists, a 14/2 stranded shielded wire can be
used to replace L2/N and (S) between outdoor unit and indoor unit
landing the shield onto ground in the outdoor unit only.
WARNING
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment damage
or improper operation.
Wires should be sized based on NEC and local codes.
CAUTION
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment damage
or improper operation.
Be sure to comply with local codes while running wire from
the indoor unit to the outdoor unit.
Every wire must be connected firmly. Loose wiring may
cause the terminal to overheat or result in unit malfunction. A
fire hazard may also exist. Ensure all wiring is tightly
connected.
No wire should touch the refrigerant tubing, compressor or
any moving parts.
Disconnecting means must be provided and shall be located
within sight and readily accessible from the air conditioner.
Connecting cable with conduit shall be routed through the
hole in the conduit panel.
NOTE: The main power is supplied to the outdoor unit.
When disconnecting the power of the outdoor unit,
the indoor unit would lose power. A disconnect
switch is not required on the Indoor unit side on
the wiring between the Outdoor and Indoor unit. A
3 pole disconnect may be used for extra protection
between the Indoor and Outdoor Unit.
4 Specifications subject to change without notice. IM-DHMSHA-02
DIMENSIONS
Fig. 4 — Indoor Unit
Table 4 — Dimensions
High Wall Unit Size 12K 9K 12K 18K 24K 30K 36K
Voltage (115V) (208/230V) (208/230V) (208/230V) (208/230V) (208/230V) (208/230V)
Height In (mm) 11.07 (281) 11.07 (281) 11.07 (281) 12.40 (315) 13.39 (343) 13.39 (343) 13.39 (343)
Width In (mm) 33.17 (842) 33.17 (842) 33.17 (842) 38.98 (990) 46.69 (1186) 46.69 (1186) 46.69 (1186)
Depth In (mm) 8.75 (222) 8.75 (222) 8.75 (222) 8.58 (218) 10.16 (258) 10.16 (258) 10.16 (258)
Weight- Net Lbs (kg) 19.18 (8.7) 19.18 (8.7) 19.18 (8.7) 24.46 (12.0) 40.12 (18.2) 40.12 (18.2) 40.12 (18.2)
IM-DHMSHA-02 Specifications subject to change without notice. 5
DIMENSIONS (CONT)
Indoor unit outline
12.7(323)
14.17(360)
33.17 (842)
33.16 (842)
32.24 (819)
2.2 (56)
1.78 (45)
11.03 (280)
9.25(235)
8.49 (216)
7.96 (202)
9.46 (240) 9.46 (240)
9.25 (235) 9.25 (235)
8.1 (206)
7.05 (179)
5.87 (149)
8.1(206)
6.88(175)
5.36(136)
1.86 (47)
7.96 (202)
8.49 (216)
9.25 (235)
11.03 (280)
1.78 (45)
4.1 (104)
8.75 (222)
11.03 (280)
9.41 (239)
2.33 (59)
1.99 (51)
0.47 (12)
8.75 (222)
9.17 (233)
33.16 (842)
2.6 (65)
2.6 (65)
Fig. 5 — Sizes 9K and 12K
6 Specifications subject to change without notice. IM-DHMSHA-02
DIMENSIONS (CONT)
13.29 (337)
12.58 (319)
11.73 (298)
9.54 (242)
7.25(184)
6.21(158)
5.08(129)
4.13(105)
3.23(82)
1.08(27)
11.32 (287)
10.39 (264)
9.57 (243)
8.78 (223)
7.53 (191)
5.98 (152)
5.08(129)
4.13(105)
3.15(80)
1.08(27)
10.66 (271)
12.40 (315)
2.56 ( 65)
1.74 (44)
5.03 (128)
13.52 (343)
38.98 (990)
20.42 (519)
1.74 (44)
1.96 (50)
10.65 (271)
12.41 (315)
2.56 ( 65)
8.86 (225)
38.98 (990)
38.98 (990)
12.40 (315)
2.16 (55)
2.37 (60)
0.64 (16)
0.44 (11)
9.68 (246)
10.63 (270)
Fig. 6 — Size 18K
IM-DHMSHA-02 Specifications subject to change without notice. 7
DIMENSIONS (CONT)
10.69 (271)
47.00 (1194)
10.67 (271)
2.24 (57)21.63 (549)
47.01 (1194)
20.91 (531)2.24 (57)
2.25 (57)
2.24 (57)
2.25 ( 57)
12.10 (307)
14.26 (362)
12.54 (319)
11.05 (281)
9.71 (247)
4.53(115)
4.34(110)
4.33(110) 4.53 (115)
9.70 (246)
12.53 (318)
14.25 (362)
2.24 ( 57)
2.25 (57)
12.01 (305)
10.68 (271)
10.30 (262)
11.77 (299)
13.51 (343)
2.40 (61)
2.53 (64)
0.65 (16)
0.42 (11)
2.19 (56)
47.01 (1194)
13.51 (343)
14.98 (380)
14.97 (380)
10.98 (279)
Fig. 7 — Sizes 24K, 30K and 36K
8 Specifications subject to change without notice. IM-DHMSHA-02
CLEARANCES
5.9in.(15cm) min.
5
in.
(12cm)
min.
6ft.
5
in.
(12cm)
min.
(1.8m)
CEILING
FLOOR
Fig. 8 — Clearances
NOTE: The top clearance recommended for proper return airflow is 5.9in (15cm). Reduction of this clearance may
decrease unit performance. This may be reduced to 3.2in (80mm) as long as the right and left clearances are
achieved.
IM-DHMSHA-02 Specifications subject to change without notice. 9
INSTALLATION TIPS
Correct orientation of Mounting Plate
1/2 in. (13 mm
)
Min.
I
NDOOR
OUTDOOR
Pipe holder
Pip
e cover
Right piping
Left piping
Pipe cover
Right back piping
Left back
piping
1
2
3
4
Ideal installation locations include:
Indoor Unit
• A location where there are no obstacles near the inlet and outlet
area.
• A location which can bear the weight of the indoor unit.
• Do not install the indoor units near a direct source of heat such as
direct sunlight or a heating appliance.
• A location which provides appropriate clearances (See Fig. 8 — on
page 9.)
INDOOR UNIT INSTALLATION
PRIOR TO INSTALLATION
Before installing the indoor unit, ensure the compatibility with the
outdoor unit using the product data as a reference.
Select the Installation Location:
Before installing the indoor unit, choose an appropriate location.
Use the following standards should help you choose an appropriate
unit location. Proper installation locations must meet the following
standards:
1. Good air circulation
2. Convenient drainage
3. Noise from the unit will not disturb others
4. Firm and solid—the location will not vibrate
5. A site strong enough to support the unit’s weight
6. A location at least 3.28 ft. (1m) from all other electrical devices
(e.g., TV, radio, computer)
7. DO NOT install the unit in the following locations:
a. Near any source of heat, steam, or combustible gas
b. Near flammable items such as curtains or clothing
c. Near any obstacle that might block air circulation
d. Near the doorway
e. In a location subject to direct sunlight
NOTE: Wall Holes (if there is no fixed refrigerant piping):
While choosing a location, leave ample room for a
wall hole. Refer to “DRILL HOLE IN WALL FOR
THE INTERCONNECTING PIPING, DRAIN
AND WIRING” on page 10 for the connective
piping step for the signal cable and the refrigerant
piping that connect the indoor and outdoor units.
The default position for all piping is the right side
of the indoor unit (while facing the unit). However,
the unit can accommodate piping to both the left
and right sides.
Attach the Mounting Plate to the Wall:
1. Carefully remove the mounting plate, which is attached on the back
of the indoor unit.
2. Using the stencil, determine the wall hole position. The mounting
plate should be located horizontally and level on the wall. All
minimum spacings (See Fig. 8 — on page 9) should be maintained.
3. If the wall is block, brick, concrete or similar material, drill 0.2” (5
mm) diameter holes and insert the anchors for the appropriate
mounting screws.
4. Attach the mounting plate to the wall.
Mounting Plate Dimensions
Different model sizes have different mounting plates. Ensure there’s
enough room to mount the indoor unit (See Fig. 8 — on page 9).
The following measurements can be located on these figures:
• Width of mounting plate
• Height of mounting plate
• Width of indoor unit relative to plate
• Height of indoor unit relative to plate
• Recommended position of wall hole (both to the left and right of
mounting plate)
• Relative distances between the screw holes.
Fig. 9 — Mounting Plate Orientation
DRILL HOLE IN WALL FOR THE INTERCONNECTING PIPING, DRAIN AND WIRING
Refrigerant Line Routing
The refrigerant lines may be routed in any of the four directions
shown in Fig. 11.
For maximum serviceability, it is recommended to have refrigerant
line flare connections and the drain connections on the outside of
the wall that the fan coil will be mounted on.
If piping is going through the back:
1. Determine the pipe hole position using the mounting plate as a
template. Drill the pipe hole diameter per the values given in Figures 5,
6, and 7. The outside pipe hole is 1/2-in. (13 mm) min. lower than the
inside pipe hole, so it slants slightly downward (see Fig. 10).
Fig. 10 — Drill Holes
If piping is going through the right or left side:
1. Use a small saw blade to carefully remove the corresponding plastic
covering on the side panel and drill the appropriate size hole where
the pipe is entering the wall.
10 Specifications subject to change without notice. IM-DHMSHA-02
Fig. 11 — Piping Locations
ELECTRICAL DATA
S
L
N
115-1-60
Main
Power Supply
115-1-60
L
N
S
L
N
Power to
Indoor Unit
CONNECTING CABLE
OUTDOOR TO INDOOR
GND
Ground
Indoor
Signal
High
Voltage
115-1-60
115-1-60
FIELD POWER SUPPLY
GND
Indoor
Signal
High
Voltage
S
L1 L2
208/230-1-60
Main
Power Supply
L1
L2
S
L1
L2
CONNECTING CABLE
OUTDOOR TO INDOOR
Indoor Unit
Power Supply
208/230-1-60
GND
Ground
208/230-1-60
FIELD POWER SUPPLY
GND
208/230-1-60
115V Indoor Unit 115V Outdoor Unit 208/230V Indoor Unit 208/230V Outdoor Unit
Indoor
Signal
High
Voltage
Indoor
Signal
High
Voltage
Power to
Indoor Unit
Electrical box
cover
Front Panel
LNS L1 L2 S
115V 208/230V
High Wall Unit Size
12K
9K 0.33 0.053
12K 0.33 0.053
18K 0.49 0.067
24K 0.61 0.16
30K 0.61 0.16
36K 0.61 0.16
LEGEND
FLA-Full Load AMPS
V-PH-HZ FLA HP
208/230-1-60
CONNECTION DIAGRAMS
Table 5 — Electrical Data
Indoor Fan Max Fuse CB Amp
0.33 0.053
Refer to outdoor unit installation instructions –
Indoor unit powered by the outdoor unit
Fig. 12 — Connection Diagrams
Notes:
1. Do not use thermostat wire for any connection between the indoor and outdoor units.
2. All connections between the indoor and outdoor units must reflect the connections in Fig. 12. The connections are sensitive to polarity and will
result in a fault code.
TERMINAL BLOCK LOCATION
1. Open the indoor unit’s front panel.
2. Use a screwdriver to open the wire box cover on the right side of the unit, then open the terminal block cover. This reveals the terminal block.
Fig. 14 — Control and Power Wiring on Indoor Unit
Fig. 13 — Terminal Block Location
IM-DHMSHA-02 Specifications subject to change without notice. 11
INSTALL ALL POWER,
Upper hook
Lower hoo
k
Oblique
90
Roughness
Bar
Copper pipe
Clamp handle
Red arrow mark
Cone
Yoke
Handle
Bar
"A"
Flare nut
Coppe
r tube
INTERCONNECTING WIRING, AND PIPING
TO THE INDOOR UNIT
1. Run interconnecting piping and wiring from the outdoor unit to the
indoor unit.
2. Run an interconnecting cable through the hole in wall (outside to
inside).
3. Lift the indoor unit into position and route piping and drain through
the hole in wall (inside to outside). Fit the interconnecting wiring
into the back side of the indoor unit.
4. Put an upper claw at the back of the indoor unit on the upper hook
of the mounting plate and move the indoor unit from side to side to
ensure it is securely hooked. See “Mounting Plate Dimensions” on
page 10 and Fig. 9 for reference.
5. Open the indoor unit’s front cover and remove the field wiring
terminal block cover.
6. Pull the interconnecting wire up from the back of indoor unit and
position close to the terminal block on the indoor unit.
7. Push the lower part of the indoor unit up on the wall, then move the
indoor unit from side to side, up and down to ensure it is hooked
securely (see Fig. 15).
Table 6 — Flare Nut Spacing
OUTER DIAM. (MM)
Ø 1/4” (6.35)
Ø 3/8” (9.52)
Ø 1/2” (12.7)
Ø 5/8” (15.88) 0.09 (2.2) 0.08 (2.0)
MAX. MIN.
0.05 (1.3) 0.03 (0.7)
0.06 (1.6) 0.04 (1.0)
0.07 (1.8) 0.04 (1.0)
A (MM)
Fig. 17 — Flare Nut Spacing
f. Apply a small amount of refrigerant oil to the flare
connection on the tubing.
g. Align the center of the pipes and/or service valve.
Indoor unit tubing Flare nut Piping
Fig. 15 — Indoor Unit Installation
8. Connect the wiring from the outdoor unit per the connection
diagram (see Fig. 12 and Fig. 14).
9. Replace the field wiring cover and close the indoor unit’s front
cover.
10. Piping:
a. Cut the pipe, with a pipe cutter, at 90 degrees (see Fig. 16).
b. Remove the service connection (if provided with the unit).
Burr
Fig. 16 — Pipe Cutting
c. Remove all the burrs from the cut cross section of the pipe
avoiding any burrs inside the tubes.
d. Remove the flare nuts attached to the indoor and outdoor
units.
e. Install the correct size flare nut onto the tubing and make
the flare connection. Refer to Table 6 for the flare nut
spaces.
Fig. 18 — Align Pipe Center
h. Connect both the liquid and gas piping to the indoor unit
i. Tighten the flare nut using a torque wrench as specified in
Table 7.
Table 7 — Tightening Torque
Brass Flare
Size
Ø1/4 8-10 Ft. - Lbs. 10.8 to 13.6
Ø3/8 15-18 Ft. - Lbs. 20.3 to 24.4
Ø1/2 28-32 Ft. - Lbs. 38.0 to 43.4
Ø5/8 38-42 Ft. - Lbs. 51.5 to 56.9
Ø3/4 50-55 Ft. - Lbs. 68.0 to 74.6
Recommended Seating
Torque for Brass Flare Nuts
N-m
Fig. 19 — Tighten the Flare Nut
12 Specifications subject to change without notice. IM-DHMSHA-02
FINAL TUBING CHECK
retaw otni dne niard tup ton oDreporP Do not form a rise
Indoor Unit
Space behind unit
Refrigerant piping
Drain hose
Signal wire
Insulation tape
l control
button
AUTO/COOL
IMPORTANT: Ensure the certain factory tubing on the indoor unit
has not shifted during shipment. Ensure the tubes are not rubbing
against each other or any sheet metal. Pay close attention to feeder
tubes and ensure the wire ties on the feeder tubes are secure and tight.
DRAIN CONNECTIONS
Connect the drain line. The drain line must not have a trap anywhere
in its length, must pitch downwards, and must be insulated up to the
outside wall (see Fig. 20). By default, the drain hose is attached to the
left-hand side of unit (when facing the back of the unit). However, it
can also be attached to the right-hand side.
a. To ensure proper drainage, attach the drain hose on the
same side that your refrigerant piping exits the unit.
b. Attach a drain hose extension (purchased separately) to the
end of the drain hose.
c. Wrap the connection point firmly with Teflon tape to
ensure a good seal and to prevent leaks.
d. For the portion of the drain hose that remains indoors, wrap
it with foam pipe insulation to prevent condensation.
e. Remove the air filter and pour a small amount of water into
the drain pan to ensure that water flows from the unit
smoothly.
Plug the Unused Drain Hole
To prevent unwanted leaks, plug the unused drain hole with the rubber
plug provided.
WIRELESS REMOTE CONTROL INSTALLATION
Mounting Bracket (if installed on the wall)
1. Use the two screws supplied with the wireless remote control to
attach the mounting bracket to the wall in a location selected by the
customer and within operating range.
2. Install the batteries in the remote control.
3. Place the remote control into the remote control mounting bracket.
NOTE: For remote control operation, refer to the unit
Owner’s Manual.
WIRED REMOTE CONTROL INSTALLATION
To connect the wired remote controller KSACN0101AAA (Timer
Function) to the indoor units, connect to the 4-pin connector located
on the display board.
To connect the wired remote controller KSACN0401AAA (7 Day
Programmable) to the indoor units:
1. Replace the display board with the shipped with the kit.
2. Install the adapter board (shipped with the kit).
3. Connect the adapter board to the new display board. Follow the
instructions on the wired controller KSACN0401AAA installation
instructions manual for more details.
4. Connect the female molex plug on the adapter board to the male
molex plug from the extension cable shipped with the kit.
5. Connect the extension cable to the wired controller
For setup instructions, refer to the controller installation manual.
Fig. 20 — Proper Drain Hose Installation
NOTE: For proper orientation of the refrigerant piping,
electrical cable and drain lines, refer to Fig. 21.
Fig. 21 — Bundle drain hose, refrigerant pipes, and
signal cable
NOTE: The factory insulation provided with the product is
sufficient, therefore adding additional insulation to
the refrigerant pipes is NOT recommended.
Additional insulation may keep the product from
attaching flush to the wall.
NOTE: For applications where gravity cannot be used for
drainage, a condensate pump accessory is
available. Consult the condensate pump
Installation Instructions for more information.
START-UP
Test Operation
Perform a test operation after completing a gas leak and electrical
safety check (see Fig. 22).
Manua
Fig. 22 — Test Operation
1. Push ON/OFF on the remote control to begin testing.
NOTE: A protection feature prevents the air conditioner
from activating for approximately 3 to 4 minutes.
2. Push MODE, select COOLING, HEATING, FAN mode to check
that all functions work correctly.
3. To run the test using the MANUAL button on the indoor unit:
a. Open the front panel of the indoor unit;
b. Push MANUAL once to energize the unit. The set
conditions for manual operation are as follows:
•Preset set point: 76
•Fan speed: AUTO
•Discharge air direction: Pre-set position based on operation
in the COOL or HEAT mode.
4. Be sure to set the MANUAL button to OFF (by pushing it twice
again) after completing the test operation.
F (24C)
IM-DHMSHA-02 Specifications subject to change without notice. 13
SYSTEM CHECKS
1. Conceal the tubing where possible.
2. Ensure the drain tube slopes downward along its entire length.
Explain Following Items To Customer
(with the aid of the Owner’s Manual):
3. Ensure all tubing and connections are properly insulated.
4. Fasten tubes to the outside wall, when possible.
5. Seal the hole through which the cables and tubing pass.
INDOOR UNIT
1. Do all remote control buttons function properly?
2. Do the display panel lights work properly?
3. Does the air deflection louver function properly?
4. Does the drain work?
1. How to turn the air conditioner on and off; selecting COOLING,
HEATING and other operating modes; setting a desired
temperature; setting the timer to automatically start and stop the air
conditioner operation; and all other features of the remote control
and display panel.
2. How to remove and clean the air filter.
3. How to set the air deflection louver.
4. Explain care and maintenance.
5. Present the owner’s manual and installation instructions to
customer.
TROUBLESHOOTING
For ease of service, the systems are equipped with diagnostic code
display LEDs on both the indoor and outdoor units. The indoor
diagnostic display is a combination of flashing LEDs on the display
panel or the front of the unit.
INDOOR UNIT DIAGNOSTIC GUIDES
Table 8 —
OPERATION LAMP TIMER LAMP DISPLAY LED STATUS
☆ 1 time
☆ 2 times
☆ 3 times
☆ 4 times
☆ 5 times
☆ 6 times
☆ 7 times
☆1 time
☆ 2 times
☆ 3 times
☆ 4 times
☆ 5 times
☆ 6 times
☆ 1 time
☆ 2 times
☆ 3 times
☆ 5 times
X
X
X
X
X
X
X
O
O
O
O
O
O
☆
☆
☆
☆
E0 Indoor unit EEPROM parameter error
E1 Indoor / outdoor units communication error
E2 Zero-crossing signal detection error
E3 Indoor fan speed is out of control
E4 Indoor room temperature sensor T1 open circuit or short circuit
E5 Evaporator coil temperature sensor T2 open circuit or short circuit
EC Refrigerant leakage detection
F0 Overload current protection
F1 Outdoor ambient temperature sensor T4 open circuit or short circuit
F2/F6 Condenser coil temperature sensor T3/T2B (Multi-zone only) open circuit or short circuit
F3 Compressor discharge temperature sensor T5 open circuit or short circuit
F4 Outdoor unit EEPROM parameter error
F5 Outdoor fan speed is out of control
P0 IPM malfunction or IGBT over-strong current protection
P1 Over voltage or over low voltage protection
P2
P4 Inverter compressor drive error
High temperature protection of the compressor top diagnosis and solution (only for 9k,12k
models)
ID Units Error Code Display
Some indoor units display error codes specifying failure modes in
the outdoor units. If possible, always check the diagnostic codes
displayed on the indoor unit first.
The diagnostic codes displayed in the indoor and outdoor units are
listed in Table 8.
O (on − light) X (off − light) ☆(flash)
For additional diagnostic information, refer to the service manual.
Copyright 2019 CAC / BDP D3300 Riverwood Parkway Atlanta GA, 30339 Edition Date: 07/19 Catalog No. IM-DHMSHA-02
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Replaces: IM-DHMSHA-01
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