ICP DFS2A309J1A, DFS2A312J1A, DFS2H312J1A, DFS2H309J1A, DFS2A318K1A Installation, Start-up And Service Instructions Manual

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without inc

Printed in Israel Pg 1

Installation, Start-Up and Service Instructions

CONTENTS

Page

SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . .1

GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11

Indoor Unit Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

. . . . . . . . . . . . . . . . . . . . . . . . .6

Power Supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Leak Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

System Checks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

CARE AND MAINTENANCE. . . . . . . . . . . . . . . . . . . . . . . . .11

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Indoor Units. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

To Clean the Indoor Unit Front Panel . . . . . . . . . . . . . . .11

To Clean Indoor Coil. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

. . . . . . . . . . . . . . . . . . . . . . . . . .11

SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . . . .12-15

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 cleaning coils. All other operations should be
performed 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 quenching cloth and fire extinguisher nearby
when brazing. Use care in handling, rigging, and setting bulky
equipment.

GENERAL

System Requirements

 Consult local building codes and National Electrical

Code (NEC, U.S.A.) for special installation requirements.

 Use only type G or C fuses.
 Use single length power cable without extension.
 Allow sufficient space for airflow clearance on condens-

ing units for wiring, refrigerant piping, and servicing
unit. See Fig. 1 and 2 for minimum required distances
between unit and walls or ceilings.

 Indoor and outdoor units should be installed at a

Maximum line length of 50 ft, and
vertical separation of 30 ft.

 Do not install indoor units near a direct source of heat

such as direct sunlight, steam or flame.

Before installing or servicing system, always turn off main
power to system and install lockout tag on disconnect.
There may be more than one disconnect switch. Electrical
shock can cause personal injury.

IMPORTANT: The Indoor unit & the inter units cable voltage

is 30 VDC

IMPORTANT: Each refrigerant line must be insulated
separately. See line sizing requirements in table 2.

Do not bury more than 36 in. of refrigerant 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
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.

DFS2A/H 09,12,18

Duct Free Systems

Fig. 1B  Outdoor Unit Clearances

Fig. 1A  Outdoor Unit Clearances

These instructions cover the installation, start-up and servicing
of

DFC2A/DFC2H outdoor and DFF2A/DFF2H indoor units

cooling only and heat pump duct free systems. See Table 1 for
parts included. See Tables 2 and 3 for Physical Data.

51302618915 0106

TOP (min.)

2 (0.6m)

LEFT (min.)

6 (0.15m)

RIGHT (min.)

2 (0.6m)

FRONT (min.)

2 (0.6m)

REAR (min.)

6 (0.15m)

Max. cable length

. Total voltage drop should not exceed 1V.
Therefore max. length:
For #18 AWG 24.3 Feet (7.4 m)

For #16 AWG 37.7 Feet (11.5 m)
For #14 AWG 50.0 Feet (18 m)

Outdoor Units . . . .

Outdoor Unit Installation . . .

Air Filters for Indoor Units

LEFT(min.)

6 (0.15m)

TOP(min.)

2 (0.6m)

REAR(min.)

6 (0.15m)

RIGHT(min.)

2 (0.6m)

FRONT(min.)

2 (0.6m)

Cooling Model Heat Pump

DFS2A309J1ADFS2H309J1A
DFS2A312J1A DFS2H312J1A
DFS2A318K1ADFS2H318K1A

421 01 9217 00

2

Table 1  Parts List  High Wall Units

ITEM QTY DIAGRAM

Mounting Bracket 1

DFF2A/DFF2H 09, 12 or DFF2A/DFF2H 18

Long Screws 8

Outdoor Sensor

Connecting Cable

1

Absorption Cushions 4

Electric Terminals 8

Remote Controller Rack 1 rack with 2 screws

Remote Controller

and Batteries

1

1

Owners Manual 1

1

(Available for HEAT PUMP ONLY)

(OPTIONAL)

(Not included)

Insulation for indoor Fittings

Wall mounted Receiver RTX

NADA001TW

TURBO-JET

ECONOMY

3

Table 2  Physical Data  Cooling Only

LEGEND

*Units are shipped with a factory charge based on 25 ft of refrigerant lines.

Table 3  Physical Data  Heat Pump

LEGEND

*Units are shipped with a factory charge based on 25 ft of refrigerant lines.
NOTE: Standard Ambient Operating Limitations  55

ºF to 125 ºF (12.7 ºC to 51.6 ºC).

INDOOR UNIT

DFF2AH09J1A DFF2AH12J1A DFF2AH18J1A

COOLING CAPACITY (Btuh)

SEER

SYSTEM CHARGE (lb)* 2.7 3.1 4.1
MOISTURE REMOVAL (pt/hr)
AIRFLOW

High Cfm 350 400 670

DIMENSIONS L x H x W (in.) 32 3/32 x 10 15/64 x 7 9/32 32 3/32 x 10 15/64 x 7 9/32 42 1/2 x 11 5/8 x 7 9/32

NET WEIGHT (lb) 19.0 19.0 27.5

OUTDOOR UNIT

DFC2A309J1A DFC2A312J1A DFC2A318K1A

TUBE CONNECTIONS

Vert Lift/Vert Drop/Max Length (ft)

30/30/50 30/30/50 30/30/50

NOMINAL LINE SIZING

Mixed Phase...Suction (in.)

DIMENSIONS L x H x W (in.) 28 3/4 X 21 1/4 X 10 7/16 35 7/16 X 25 3/16 X 12 9/32 43 5/16 X 25 3/16 X 15 3/4

NET WEIGHT (lb) 73 114 136

SEER  Seasonal Energy Efficiency Ratio

COOLING CAPACITY (Btuh) 9,000 11,600 19,000

SEER 13.0 13.0 13.0

HEATING CAPACITY (Btuh) 8,600 11,800 18,300

HSPF 7.7 7.7 7.7

SYSTEM CHARGE* (lb) 2.7 3.1 4.1

MOISTURE REMOVAL (pt/hr)

AIRFLOW

High Cfm

350 400 670

DIMENSIONS L x H x W (in.)

NET WEIGHT (lb)

TUBE CONNECTIONS

Vert Lift/Vert Drop/Max Length (ft)

NOMINAL LINE SIZING

Mixed Phase...Suction (in.)

DIMENSIONS L x H x W (in.)

SHIPPING WEIGHT (lb)

HSPF  Heating Seasonal Performance Factor
SEER  Seasonal Energy Efficiency Ratio

9,000

11,600

19,000

13 13 13

3

/8...5/

8

1

/4...1/

2

1

/4...1/

2

32 3/32 x 10 15/64 x 7 9/32 32 3/32 x 10 15/64 x 7 9/32 42 1/2 x 11 5/8 x 7 9/32

19.0 19.0 27.5

30/30/50 30/30/50 30/30/50

28 3/4 X 21 1/4 X 10 7/16 35 7/16 X 25 3/16 X 12 9/32 43 5/16 X 25 3/16 X 15 3/4

73 114 136

3

/8...5/

8

1

/4...1/

2

1

/4...1/

2

2.6 4.5 5.3

2.6 4.5 5.3

INDOOR UNIT DFF2HH09J1A DFF2HH12J1A DFF2HH18J1A

OUTDOOR UNIT DFC2H309J1A DFC2H312J1A DFC2H318K1A

4

INSTALLATION

Plan the installation carefully to avoid component failures

and make installation easier.

Indoor Unit Installation

REFRIGERANT LINE ROUTING  The refrigerant lines
may be routed in any of the four directions shown in Fig. 3.

INSTALL THE MOUNTING BRACKET

1. Carefully remove the mounting bracket, which is
connected to the back of the indoor units base with

screws.

2. Position the mounting bracket on the wall and level it
using a spirit level (see Fig. 2 for minimum required
clearance distances).

3. Mark the four drilling holes on the wall, as they appear in
Fig. 4.

4. Drill the holes, insert the wall plugs and use four long
screws to attach the mounting bracket to the wall.

5. Check that the bracket is leveled and securely fastened to
the wall.

DRILL A HOLE IN THE WALL FOR DRAINAGE AND
INTER-UNIT CONNECTIONS  To make the connections
between the indoor and outdoor units, drill a 3-in. hole through
the wall for the refrigerant lines, drainage hose and control
cable passage as shown in Fig. 5.

1. Mark the center of the hole to be drilled according to the re­frigerant line routing used and dimensions shown in Fig. 4.

2. Make sure to drill outwards and downwards, so that the
opening in the outside wall is at least

1

/2-in. lower than

the opening on the inside.

3. Make sure the drainage hose is at the bottom side of the
hole.

4 . If refrigerant line route no. 1, 2 or 4 are used, use a small

saw blade to carefully remove the corresponding plastic
covering on the side panel.

5. Run the outdoor sensor cable, electrical cable, refrigerant
lines, and drainage tube through the hole.

6. Fill the remaining wall hole gap with an appropriate
sealant material.

Fig. 2  Indoor Unit Clearances

Fig. 4 Mounting Bracket DFF2A/DFF2H 09, 12

Fig. 4 Mounting Bracket DFF2A/DFF2H 18

REFRIGERANT

LINES

DRAINAGE

TUBE

ELECTRICAL

CABLE

1/2.IN. MIN

3-IN.

INDOOR OUTDOOR

Fig. 5  Drill Holes

(Optional for HEAT PUMP SYSTEMS)

OUTDOOR SENSOR CABLE

6" (0.15m)

(1.8-2.5m)

min.

min.

min.

6'-8'3"

8"

(0.2m)

8"

(0.2m)

Fig. 3  Refrigerant Lines

4

2

3

1

3½

35
15

2

2

1

6

18

7¾

2¾

2¾

13¾

2¾

10

5

10

3

25

2

2

09, 12

17

9

16

11

32

23

32

5

3½

1¾

32

11

4

1

32

19

1¾

8

5

8

1

2¾

2. Put the control box cover and grille frame back on using
the appropriate screws (Steps 3 and 4 of Wire the Indoor
Unit section). Put the grille insert back on.

REASSEMBLE

Fig. 8  Indoor Unit Mounting

5

Fig. 9  Outdoor Sensor Connection

123456

ON

HEAT PUMP

Model-12 DIP Switches location

(on the Control Box side)

HEAT PUMP

Models-09,18 DIP Switches location

(on the Control Box side)

Inter unit cable clamp

TH1

TH2

TH3

Display

connection

Inter unit

terminal block

30 VDC

123456

ON

123456

ON

123456

ON

COOLING ONLY

Model-12 DIP Switches location

(on the Control Box side)

COOLING ONLY

Models-09,18 DIP Switches location

(on the Control Box side)

Standard Dip Switches

status from the factory

(Heat pump only)

MAKE DRAINAGE CONNECTIONS

1. Connect the unattached end of the drainage tube to the
drainage hose outlet.

2. Seal the drainage connection to prevent leakage.

3. Make sure there are no kinks, U bends or flattened
sections in the tube.

4. Check that the drainage functions properly. Fill the pan
below the units coil with water and observe that it freely
drains out.

5. Make sure the drainage hose is at the bottom side of the
wall through-hole (see Fig. 5).

outdoor sensor cable towards the lower right hand corner

of the indoor unit.

WIRE THE INDOOR UNIT

2. Remove the unit's front panel by lifting the lower part

and pulling it gently outward and upward. See Fig. 6.

5. Pull downwards and outwardston the bottom of the grille
and gently raise the frame of

the top of the unit.

3. Remove the two screws from the control box cover

and take off the cover. See Fig.

7. Save the screws to reassemble.

6 . Once all covers are off, mount the unit onto the wall

mounting bracket. See Fig. 8.

NOTE: Leave covers off until after the Making Drainage
Connections section.

7 . Route the interconnecting units electric cable and the

Make sure that all wires and screws are firmly fastened.
Loose wires or connections can cause damage and present
a fire hazard.

1.Strip the cables back1/4 inch.

8. Make sure that the wires are connected in accordance
with the wiring diagram on the inside of the unit front

cover or within this instruction manual.

9. Secure the control cables to the strain relief.

10. For heat pump systems only, connect the outdoor sensor

TH3 to its mating black terminal. See Fig.

9.

NOTE: In general wiring the indoor unit does not require the
removal of the grille frame but in case of need do as follow:

4. Remove the two screws from the air discharge opening.
Save the screws to reassemble. See Fig. 7A.

1. Connect the display connector to the display panel
printed circuit board.

Fig. 6  Remove Grille Insert

Fig. 7  Remove Control Cover

Mount the indoor unit on the mounting bracket

Gently push with

the arrow direction

1

2

FILTER

IR

RECEIVER

POWER/AIRCOND

TIMER

FILTER

IR

RECEIVER

POWER/AIRCOND

TIMER

Fig. 7A---Remove the screws from the air discharge opening.

6

CONNECT REFRIGERANT LINES  Connect the ends of
the refrigerant lines to their appropriate fittings, following these
guidelines:

To connect the refrigerant lines use only L type sealed,
dehydrated copper refrigerant tubing. No other type of tubing
may be used. Use of other types of tubing will void the manu­facturers warranty.

Do not open service valves or remove protective caps from
tubing ends until all the connections are made.

Take care to avoid kinks or flattening of the tubing.

Bend tubing with special bending tools to avoid the forma­tion of sharp bends.

Keep the tubing free of dirt, sand, moisture and other con­taminants to avoid damaging the refrigerant system.

Avoid sags in the suction line to prevent the formation of oil
traps.

Insulate both refrigerant lines separately with

3

/8-in. walled
thermal pipe insulation. Inserting the tubing into the insulation
before making the connections can save time and improve in­sulation. The suction and mixed phase lines should never come
in direct contact.

ATTACH THE REMOTE CONTROLLER RACK

1. Use the two screws supplied with the controller to attach
the rack to the wall in the location selected by the custom­er (see Fig. 10 ).

2. Install batteries in the remote control.

3. Place remote control into remote control rack.

4. For remote control operation, refer to the unit Owners
Manual.

Outdoor Unit Installation

NOTE: The outdoor unit must be installed on a solid surface
(mounting base).

1. Place the rubber absorption cushions (supplied with the
outdoor unit) under the units feets to prevent vibrations.

2. Fasten the outdoor unit legs to the mounting base, as
shown in Fig. 12. The cushion goes between the legs and
the mounting base.

3.Be sure that the unit is leveled.

MAKE REFRIGERANT PIPING CONNECTIONS (OUT­DOOR UNIT)  To connect the refrigerant lines:

Use only L type sealed, dehydrated copper refrigerant
tubing. No other type of tubing may be used. Use of other types
of tubing will void the manufacturers warranty.

Do not open service valves or remove protective caps from
tubing ends until all the connections are made.

Bend tubing with special bending tools to avoid the forma­tion of sharp bends. Take care to avoid kinks or flattening of
the tubing.

Keep the tubing free of dirt, sand, moisture, and other con­taminants to avoid damaging the refrigerant system.

Avoid sags in the suction line to prevent the formation of oil
traps.

Insulate each tube with

3

/8-in. walled thermal pipe insula­tion. Inserting the tubing into the insulation before making the
connections will save time and improve installation

The suction and mixed-phase lines should never come in direct
contact.

Fig. 10  Attach Rack to the Wall

POWER SUPPLY

TERMINAL BLOCK

HIGH/LOW

VOLTAGE METAL

BARRIER

TH3
(HEAT PUMP ONLY)

METAL

CONDUIT

CONNECTION

PLATE

POWER SUPPLY CABLE

INTER UNIT CABLE

4 ABSORPTION CUSHION TO

BE PUT UNDER EACH

INTER UNIT

TERMINAL BLOCK

Fig. 11 Wall Mounted Unit - RTX

(OPTIONAL)

SENSOR

FEET

NADA001TW

L2 L1
280-230 VAC

1

2

3

4

5

24 VAC

FAN (H)

FAN (L)

R.V.S

COMP.

COMMON

L2 L1
208-230 VAC

1

2

3

4

5

6

24 VAC

FAN (H)

FAN (L)

R.V.S

COMP.

COMMON

1

2

3

4

5

24 VAC

FAN (H)

FAN (L)

R.V.S

COMP.

COMMON

REMOTE CONTROL

REMOTE CONTROL RACK

TURBO-JET

ECONOMY

Models: DFC2A/H 12, 18

Fig. 12 --- Legs Mounting Base and Wiring

Outdoor Units

7

FILTER

IR

RECEIVER

POWER/AIRCOND

TIMER

FILTER

IR

RECEIVER

POWER/AIRCOND.

TIMER

INDOOR UNIT 09,12,18

PRESSURE

COMPRESSOR

IMPEDANCE

AUTO
OFF
REMOTE

FUSE

FILTER

IR

RECEIVER

POWER/AIRCOND

TIMER

POWER/AIRCOND.TIMER

IR RECEIVERFILTER

1

2

3

4

5

6

7

8

9

HI speed

Comp
RV
S

Med speed

Low speed

Neutral

Contact

S(3ph)

T(3ph)

p.

Plastic Cover

L2

L1

115 V

AC

1

2

3
4

5

30 VDC

FA

N

RV

S

C

O

M

P

(+

3

0

V

)

DC RTN

6

TH1
TH2
TH3

*

1

2

3

4

5

6

FLARING AND CONNECTING REFRIGERANT LINES

1. Remove the protective cap from the flare fitting.

2. Remove the protective cap from the tubing and cut to the
required length. Be sure that the cut is perpendicular and
clean, without burrs.

3. Slip the flare nut on the tubing and flare the tube end
using standard flaring tools.

4. Tighten the nut until resistance is met. Mark the nut and
the fitting. Using a suitable wrench tighten an additional

1

/

4

turn. Use the following specified torque, according to

connection size:

Mixed-Phase line: Suction line:

1

/

4

-in.  (12.3 ft-lb)

1

/

2

-in.  (36 ft-lb)

3

/

8

-in.  (29 ft-lb)

5

/

8

-in.  (47 ft-lb)

NOTE: The service valves on the outdoor unit must remain
closed until all 4 connections have been made.

EVACUATE TUBING AND CHARGE THE SYSTEM 
When all the fittings are connected, air must be expelled, then
refrigerant charge must be checked and adjusted. Follow the
steps below.

1. Open the service port cap on the suction line valve (large
valve).

2. Connect the vacuum pump to the service port via the
pressure gage and evacuate to 500 microns to eliminate
contamination and moisture.

3.Disconnect the vacuum pump. Unit should maintain
500 microns for 5 minutes.

5. Open the mixed-phase valve (small valve) with an Allen

wrench.

6. Open the suction line valve (large valve) with an Allen

wrench.

7. The outdoor unit is supplied with sufficient R-22 refriger-

an

t up to 25 ft piping length. Add 0.9 oz of refrigerant for

each additional 3 ft of tubing used.

8. Make sure that the valves are properly opened. Be careful
not to open them more than required as this may damage
the thread.

9. Replace the service port cap. Using refrigerant oil, lubri­cate the cap beam and hand tighten until resistance is met.
Use a suitable wrench to tighten the cap by an additional

1

/

2

turn.

Power Supply 

See Tables 4 and 5 for electrical data

and Fig. 13-16 for system wiring diagrams.

Leak Test 

Leak test all fittings with appropriate test

equipment.

Model DFC2A/H 09

Fig. 12A --- Legs Mounting Base and Wiring

Outdoor Units

4. Remove the service port caps from the mixed-phase

valve and suction line valve

Fig. 12B --- Indoor unit Leds and Wiring

8

Table 4 — Electrical Data, Indoor Units — 115, 208/230-1-60

LEGEND

*If indoor unit is powered from outdoor terminal block, the MOCP for

the outdoor unit is for both sections

NOTE: Specifications and performance data are subject to change
without notice.

.

Table 5 — Electrical Data, Outdoor Units — 115, 208/230-1-60

LEGEND

*If indoor unit is powered from outdoor terminal block, the MOCP for

the outdoor unit is for both sections

NOTE: Specifications and performance data are subject to change
without notice.

UNIT MCA* MOCP* FULL LOAD AMPS FAN MOTOR AMPS

COMPRESSOR

AMPS

COMPRESSOR

LOCKED ROTOR

AMPS

DFF2A/DFF2H 09,12 0.1 10 1.8 1.2 NA

DFF2A/DFF2H 18 0.1 10 2.4 2.0 NA

MCA — Minimum Circuit Amps
MOCP — Maximum Overcurrent Protection

UNIT MCA* MOCP* FULL LOAD AMPS FAN MOTOR AMPS

COMPRESSOR

AMPS

COMPRESSOR

LOCKED ROTOR

AMPS

DFC2A/DFC2H 09,12 10 20 8 1 6 42, 58
DFC2A/DFC2H 18 10 20 8 1 6 42

MCA — Minimum Circuit Amps
MOCP — Maximum Overcurrent Protection

Fig. 13 Heat Pump System Wiring Schematic DFF2A/DFF2H 09 Fan Coil with

DFC2A/DFC2H 09 Condensing Unit

NOTES:

1. If any of the original wire furnished must be replaced, it must

be replaced with Type 90° C wire or its equivalent.

2. Wire in accordance with National Electrical Code (NEC) and

local codes.

3. Thermistor wiring cable 32 ft long provided with indoor unit.

4. Compressor and fan motors are protected by internal ther

mal

overloads.

9

TB 1

G

R

/

Y

E

L

OUTDOOR UNITINDOOR UNIT

B

L

K

W

H

T

HLTV

BLK

* BLUE

*BR

GR/YEL

FAN

J1

K4

K3

K2

K1

DC RTN

FAN

FUSE 6A

L1

L2

W

H

T

FAN

MOTOR

*

B

R

*

B

L

U

E

*

G

R

/

Y

E

L

0

Mains AC Supply

~

TH3

RVS

BLK

RVS

B

R

N

FC

TH2

**BLK

**WH

**YEL

**GREEN

COMP 1

CC

COMP.

*

B

R

*

B

L

U

E

*

B

L

K

*

B

R

C

S

R

PH-AC

COMP 1

30VDC

Power Supply

*OR

0

B

L

U

E

~ BR

*** GR/YEL

GREEN

GREEN

***GREEN

DC RTN

+30 VDC

HLTV

RVS

FAN

**RED

2

5
1974

B

L

K

Y

E

L

/

G

R

W

H

B

R

N

O

R

7130C

J12

J6 J7

J8

FAN

RVS

COMP.

BLK

J18

RED

K6

K5

K1

K2

STEPPER

MOTOR

BLUE

+30V WH

K8

K9

K7

J11

FANH

FAN T

FAN L

J14

BLK

RED

1

3

+12V

-12V

BLK

WH

RED

GREEN

BLDC

MOTOR

J1

J5

1

3

J3

12345

J4

12345

6

TH1

TAC 670 control

TAC 671 Main Board

TAC 672

Motor Control

TAC 673

Relay Board

M

R

E

D

132

YEL

GR/YEL

AC

IN

DC Out (+)

BLK

***RED

1

5

4

6

2

Y

E

L

V

S

P

23465

TB

DC RTN (-)

DC

RTN

~

0

DC

Out

TB

W

H

T

+

1

2

V

D

C

R

E

D

1

2

3

4

5

5

4

3

H.L.T.V

1

OR

COMP 1

**OR

RVS

HLTV

BLK

BLK

1

2

3

456

GRD

TH3

GRD

GRD

Model 09 Wiring Diagram

*** -16 AWG

** -14 AWG

*-12AWG

ALL OTHER WIRES 18 AWG

-Splice

-Terminal (Unmarked)

Factory Wiring

Field Control Wiring

Field Power Wiring

Accessory or Optional Wiring

CC -Compressor Capacitor

COMP-Compressor

FC -Fan Capacitor

GRD -Ground

RVS -Reversing Valve Solenoid

HLTV -Heating Low Temp. Valve

TB -Terminal Block

TH -Thermistor

LEGEND

TH3

TB

GRD

Fig. 14 Heat Pump System Wiring Schematic

DFF2A/DFF2H 12,18

Fan Coil with DFC2A/DFC2H 12,18 Condensing Unit

NOTES:

1. If any of the original wire furnished must be replaced, it must

be replaced with Type 90° C wire or its equivalent.

2. Wire in accordance with National Electrical Code (NEC) and

local codes.

3. Thermistor wiring cable 32 ft long provided with indoor unit.

4. Compressor and fan motors are protected by internal ther

mal

overloads.

10

7137D

TB 1

G

R

/

Y

E

L

OUTDOOR UNITINDOOR UNIT

B

L

K

W

H

T

HLTV

BLK

*BLUE

*BR

GR/YEL

FAN

J1

K4

K3

K2

K1

DC RTN

FAN

FUSE 6A

L1

L2

W

H

T

FAN

MOTOR

*

B

R

*

B

L

U

E

*

G

R

/

Y

E

L

0

Mains AC Supply

~

TH3

RVS

BLK

RVS

B

R

N

FC

TH2

**BLK

**WH

**YEL

**GREEN

TH3

COMP 1

TB

CC

COMP.

*

B

R

*

B

L

U

E

*

B

L

K

*

B

R

C

S

R

PH-AC

COMP 1

30VDC

Power Supply

*OR

0

B

L

U

E

~ BR

*** GR/YEL

GREEN

GREEN

***GREEN

DC RTN

+30 VDC

HLTV

RVS

FAN

**RED

1

6

5432

B

L

K

Y

E

L

/

G

R

W

H

B

R

N

J12

J6 J7

J8

FAN

RVS

COMP.

BLK

J18

RED

K6

K5

K1

K2

STEPPER

MOTOR

BLUE

+30V WH

K8

K9

K7

J11

FANH

FAN T

FAN L

J14

BLK

RED

1

3

+12V

-12V

BLK

WH

RED

GREEN

BLDC

MOTOR

J1

J5

1

3

J3

12345

J4

12345

6

TH1

TAC 670 control

TAC 671 Main Board

TAC 672

Motor Control

TAC 673

Relay Board

M

R

E

D

+

3

0

V

D

C

B

L

K

D

C

R

T

N

132

YEL

GR/YEL

AC

IN

DC Out (+)

BLK

***RED

1

5

4

6

2

Y

E

L

V

S

P

23465

TB

DC RTN (-)

DC

RTN

~

0

DC

Out

TB

W

H

T

+

1

2

V

D

C

R

E

D

1

2

3

4

5

1

2

3

4

5

5

4

3

H.L.T.V

1

OR

COMP 1

**OR

RVS

HLTV

BLK

BLK

6

*** -16 AWG

** -14 AWG

*-12AWG

ALL OTHER WIRES 18 AWG

-Splice

-Terminal (Unmarked)

Factory Wiring

Field Control Wiring

Field Power Wiring

Accessory or Optional Wiring

CC -Compressor Capacitor

COMP-Compressor

FC -Fan Capacitor

GRD -Ground

RVS -Reversing Valve Solenoid

HLTV -Heating Low Temp. Valve

TB -Terminal Block

TH -Thermistor

GRD

GRD

TH3

LEGEND

Models 12 / 18 Wiring Diagram

GRD

11

START-UP

System Checks

1. Conceal the tubing where possible.

2. Make sure that the drainage tube slopes downward along
its entire length.

3. Ensure all tubing and connections are properly insulated.

4. Fasten tubes to the outside wall.

5. Seal the hole through which the cables and tubing pass.

6. Connect the air conditioner to the power source and turn
it on.

7. Check all air conditioner operating modes. Refer to
Owners Manual for operating details.

INDOOR UNIT

1. Do all the remote controller buttons function properly?

2. Do the display panel lights work properly?

3. Does the air deflection louver function properly?

4. Does the drainage work?

OUTDOOR UNIT

1. Are there unusual noises or vibrations during operation?

2. Is noise, drain water or airflow from the unit likely to
disturb the neighbors?

3. Are there any gas leaks?

EXPLAIN THE FOLLOWING ITEMS TO THE
CUSTOMER, WITH THE AID OF THE OWNERS
MANUAL:

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 air conditioner operation; and the other features of
the remote controller 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 the customer.

CARE AND MAINTENANCE

The following may be performed by the equipment owner.

Outdoor Units

CLEANING COILS  Coil should be washed out with
water or blown out with compressed air. Clean coil annually or
as required by location and outdoor air conditions. Inspect coil
monthly and clean as required. Fins are not continuous through
coil sections. Dirt and debris may pass through first section,
become trapped between the row of fins and restrict outdoor
unit airflow. Use a flashlight to determine if dirt or debris has
collected between coil sections.

Clean coil as follows:

1. Turn off unit power and install lockout tag.

2. Using a garden hose or other suitable equipment, flush
coil from the outside to remove dirt. Be sure to flush all
dirt and debris from drain holes in base of unit. Fan
motors are waterproof.

Indoor Units

To Clean the Indoor Unit Front Panel 

If the
front panel of the unit becomes dirty or smudged, wipe the out­side of the panel with a soft dry cloth. Use a mild liquid deter­gent and wipe off carefully with a dry cloth.

To Clean Indoor Coil  To clean the coil, remove

indoor unit front panel and vacuum the coil fins, using care not
to bend or damage fins.

LUBRICATION  The indoor-fan, automatic air sweep, and
the outdoor-fan motors are factory lubricated and require no
oiling.

Air Filters for Indoor Units

TO REMOVE AIR FILTERS 

Open the unit's front panel by lifting the lower part and pulling

TO CLEAN OR REPLACE FILTERS  Filters can be vac­uumed or washed in warm water. Shake filter to remove any
excess water, and replace it back.
If the filter has begun to break down or is torn, replace it.
Replacement filters are available through a local dealer.

SERVICE

The following should be performed by a qualified service
technician.

Clean Condensate Drains  Clean all drains and

drain pans at the start of each cooling season. Check the flow
by pouring water into the drain.

Clean or Replace Drain Pan  The drain pan

should only be cleaned or replaced by a qualified service
technician.

1. Place a plastic sheet on the floor to catch any water that
may spill from the drain pan.

2. Remove the intake grille and distribution assembly.

3. Remove the condensate water in the drain pan by letting
water drain into a 3-gallon bucket.

Before performing recommended maintenance, be sure unit
main power switch is turned off. Failure to do so may result
in electric shock or injury from rotating fan blade.

To avoid the possibility of electric shock, before performing
any cleaning and maintenance operations, always turn off
power to the system by pressing the ON/OFF button

on the remote control and turn off the separate disconnect

switch located near the unit.

If the indoor unit is on a separate switch, be sure to turn this

disconnect off as well.

Do not wash filter in water over 120 F (to avoid shrinkage).
Do not expose filter to fire (to avoid fire damage). Do not
expose filter to direct sunlight. Clean filter more frequently
when air is extremely dirty.

Do not attempt to clean or service components in control
box.

Operating your system with dirty air filters may damage
the indoor unit and, in addition, can cause reduced perfor­mance, intermittent system operation, frost build up on the
indoor coil, and blown fuses. Inspect and clean or replace
the air filters monthly.

it gently outward and upward.
Pull out the filters.

12

TROUBLESHOOTING (Tables 6-8, and Fig. 17)

Table 6  Service Indicators

Be sure to check for broken wires or loose cable lugs
before troubleshooting system.

LAMP STATUS INDICATION CORRECTION ACTION

1 Flash Faulty TH1 Sensor

Check the TH1 thermistor for correct resistance.
Check for proper connection.
Replace thermistor if necessary.

2 Flashes Faulty TH2 Sensor Check the TH2 thermistor for correct resistance.

Check for proper connection.
Replace thermistor if necessary.

3 Flashes Low Pressure Check system pressures.

Check refrigerant charge.
Check thermistors (TH1 and TH2) for correct resistance.

4 Flashes High Pressure Check system pressures.

Check refrigerant charge.
Check thermistors (TH1 and TH2) for correct resistance.

5 Flashes Low Voltage Check operating voltage.

Check electrical connections.

6 Flashes High Voltage Check operating voltage.

Check electrical connections.

V

AC

CLEAN FILTER INDICATOR.
FLASHES AFTER 250 HOURS
OF OPERATION

OPERATION LED.
INDICATES ERROR

POWER LED.
OFF WHEN SYSTEM IS
OPERATING AND FLASHES
WHEN SYSTEM IS IN ERROR.
(DOES NOT INDICATE ERROR CODE)

Fig. 17  Indicator Lights

13

Table 7 

DFS2A/DFS2H Thermistor TH-1, TH-2, and TH-3 Temperature to Resistance Conversion

NOTE: Resistance tolerance ± 3%.

TEMPEATURE

(0F)

TEMPERATURE

(0C)

TEMPERATURE

TOLERANCE

(0F)

TEMPERATURE

TOLERANCE

(0C)

MINIMUM

RESISTANCE

(K )

MEAN

RESISTANCE

(K )

MAXIMUM

RESISTANCE

(K )

4.0 20 ±2.0 ±1.1 30.89 32.44 34.05
2.2 19 ±2.0 ±1.1 29.46 30.93 32.45
0.4 18 ±2.0 ±1.1 28.12 29.51 30.94

1.4 17 ±2.0 ±1.1 26.84 28.16 29.51

3.2 16 ±2.0 ±1.1 25.64 26.88 28.15

5.0 15 ±2.0 ±1.1 24.49 25.66 26.87

6.8 14 ±2.0 ±1.1 23.40 24.52 25.66

8.6 13 ±2.0 ±1.1 22.38 23.43 24.50

10.4 12 ±2.0 ±1.1 21.40 22.39 23.41

12.2 11 ±2.0 ±1.1 20.47 21.41 22.38

14.0 10 ±1.8 ±1.0 19.59 20.48 21.40

15.8 9 ±1.8 ±1.0 18.74 19.59 20.45

17.6 8 ±1.8 ±1.0 17.94 18.74 19.56

19.4 7 ±1.8 ±1.0 17.17 17.93 18.71

21.2 6 ±1.8 ±1.0 16.44 17.16 17.90

23.0 5 ±1.8 ±1.0 15.75 16.43 17.13

24.8 4 ±1.8 ±1.0 15.10 15.74 16.40

26.6 3 ±1.8 ±1.0 14.47 15.08 15.71

28.4 2 ±1.8 ±1.0 13.87 14.46 15.05

30.2 1 ±1.8 ±1.0 13.31 13.86 14.42

32.0 0 ±1.8 ±1.0 12.77 13.29 13.83

33.8 1 ±1.8 ±1.0 12.25 12.74 13.25

35.6 2 ±1.8 ±1.0 11.75 12.22 12.70

37.4 3 ±1.8 ±1.0 11.28 11.73 12.18

39.2 4 ±1.8 ±1.0 10.83 11.25 11.68

41.0 5 ±1.8 ±1.0 10.40 10.80 11.21

42.8 6 ±1.8 ±1.0 9.986 10.370 10.76

44.6 7 ±1.8 ±1.0 9.595 9.960 10.33

46.4 8 ±1.8 ±1.0 9.222 9.569 9.921

48.2 9 ±1.8 ±1.0 8.866 9.196 9.530

50.0 10 ±1.8 ±1.0 8.526 8.840 9.157

51.8 11 ±1.8 ±1.0 8.197 8.496 8.797

53.6 12 ±1.8 ±1.0 7.883 8.167 8.453

55.4 13 ±1.6 ±0.9 7.583 7.853 8.125

57.2 14 ±1.6 ±0.9 7.296 7.553 7.812

59.0 15 ±1.6 ±0.9 7.022 7.267 7.513

60.8 16 ±1.6 ±0.9 6.761 6.993 7.227

62.6 17 ±1.6 ±0.9 6.510 6.731 6.954

64.4 18 ±1.6 ±0.9 6.271 6.481 6.693

66.2 19 ±1.6 ±0.9 6.042 6.242 6.444

68.0 20 ±1.6 ±0.9 5.822 6.013 6.205

69.8 21 ±1.6 ±0.9 5.611 5.793 5.975

71.6 22 ±1.6 ±0.9 5.408 5.581 5.755

73.4 23 ±1.6 ±0.9 5.214 5.379 5.544

75.2 24 ±1.6 ±0.9 5.028 5.185 5.343

77.0 25 ±1.6 ±0.9 4.850 5.000 5.150

78.8 26 ±1.6 ±0.9 4.675 4.821 4.968

80.6 27 ±1.6 ±0.9 4.508 4.650 4.793

82.4 28 ±1.6 ±0.9 4.347 4.486 4.626

84.2 29 ±1.8 ±1.0 4.193 4.329 4.466

86.0 30 ±1.8 ±1.0 4.046 4.179 4.312

87.8 31 ±1.8 ±1.0 3.904 4.033 4.163

89.6 32 ±1.8 ±1.0 3.767 3.894 4.020

91.4 33 ±1.8 ±1.0 3.637 3.760 3.884

93.2 34 ±1.8 ±1.0 3.511 3.631 3.752

95.0 35 ±1.8 ±1.0 3.391 3.508 3.626

96.8 36 ±2.0 ±1.1 3.275 3.390 3.505

98.6 37 ±2.0 ±1.1 3.164 3.276 3.389

Ω

Ω

Ω

Table 7 

DFS2A/DFS2H Thermistor TH-1, TH-2, and TH-3 Temperature to Resistance Conversion (cont)

NOTE: Resistance tolerance ± 3%.

TEMPEATURE

(0F)

TEMPERATURE

(0C)

TEMPERATURE

TOLERANCE

(0F)

TEMPERATURE

TOLERANCE

(0C)

MINIMUM

RESISTANCE

(K )

MEAN

RESISTANCE

(K )

MAXIMUM

RESISTANCE

(K )

100.4 38 ±2.0 ±1.1 3.058 3.167 3.277

102.2 39 ±2.0 ±1.1 2.956 3.062 3.169

104.0 40 ±2.0 ±1.1 2.857 2.961 3.066

105.8 41 ±2.0 ±1.1 2.762 2.864 2.966

107.6 42 ±2.0 ±1.1 2.671 2.770 2.870

109.4 43 ±2.2 ±1.2 2.583 2.679 2.777

111.2 44 ±2.2 ±1.2 2.498 2.593 2.688

113.0 45 ±2.2 ±1.2 2.417 2.509 2.602

114.8 46 ±2.2 ±1.2 2.339 2.429 2.520

116.6 47 ±2.2 ±1.2 2.264 2.352 2.441

118.4 48 ±2.3 ±1.3 2.192 2.227 2.364

120.2 49 ±2.3 ±1.3 2.122 2.206 2.291

122.0 50 ±2.3 ±1.3 2.055 2.137 2.220

123.8 51 ±2.3 ±1.3 1.990 2.070 2.151

125.6 52 ±2.3 ±1.3 1.928 2.006 2.085

127.4 53 ±2.3 ±1.3 1.867 1.943 2.021

129.2 54 ±2.3 ±1.3 1.809 1.883 1.959

131.0 55 ±2.5 ±1.4 1.753 1.826 1.900

132.8 56 ±2.5 ±1.4 1.699 1.770 1.842

134.6 57 ±2.5 ±1.4 1.647 1.717 1.787

136.4 58 ±2.5 ±1.4 1.597 1.665 1.734

138.2 59 ±2.5 ±1.4 1.549 1.615 1.683

140.0 60 ±2.5 ±1.4 1.503 1.567 1.633

141.8 61 ±2.7 ±1.5 1.458 1.521 1.585

143.6 62 ±2.7 ±1.5 1.414 1.476 1.539

145.4 63 ±2.7 ±1.5 1.372 1.432 1.494

147.2 64 ±2.7 ±1.5 1.332 1.391 1.451

149.0 65 ±2.7 ±1.5 1.293 1.350 1.409

150.8 66 ±2.9 ±1.6 1.255 1.311 1.369

152.6 67 ±2.9 ±1.6 1.219 1.274 1.330

154.4 68 ±2.9 ±1.6 1.184 1.237 1.292

156.2 69 ±2.9 ±1.6 1.150 1.202 1.256

158.0 70 ±2.9 ±1.6 1.117 1.168 1.221

14

Ω

Ω

Ω

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Copyright 2006 ICP International Comfort Products

Table 8  General System Troubleshooting Guide

SYMPTOM PROBABLE CAUSE CORRECTIVE ACTION

Unit Fails to Start.

Power supply to unit not connected (POWER LED
Off).

Check for proper connection of power at disconnect.

Fuse blown (POWER LED Off). Reset circuit breaker or replace line fuse.
ON/SEND button has not been pressed. Press ON/SEND button on remote control.
Indoor unit does not receive transmitted

commands.

Make sure that nothing is blocking the remote control
transmission to the unit.

Only Indoor Fan Works when
Cooling or Heating is Desired.

NOTE: Indoor fan runs
continuously in cooling mode.

The selected mode is Fan Only, or Cool when
heating is desired.

Check if the remote control is in the desired mode. If
not, select the correct mode (refer to User manual).
Also note that every 15 minutes (maximum) the com­pressor will be switched minimally on for 3 minutes.

Temperature is set to a value which is too high (in
Cool mode).

Observe the temperature setting on the remote control.
Also note that each 15 minutes (maximum), the com­pressor will be switched on minimally for 3 minutes.

Only Indoor Fan Motor and
Outdoor Fan Motor are Working.
No Cooling and/or Heating Takes
Place.

Overload safety device on compressor is cut out
due to high temperature.

Switch off power and try again after one hour.

Compressor run capacitor is burnt. Replace compressor run capacitor.
Compressor winding shorted. Replace compressor.

No Air Supply at Indoor Unit
(Compressor Operates).

Indoor fan motor is blocked or turns slowly. 1. Check voltage. Repair wiring if necessary.

2. Check indoor fan wheel if tight on motor shaft.
Tighten if necessary.

Indoor fan motor capacitor is burnt. Replace indoor fan motor capacitor.
Indoor fan motor winding is burnt. Replace indoor fan motor.
In Heat mode: Delayed start for indoor fan motor. Normal software delay (maximum of 20 sec).
Clogged air filters. Clean filters.

Low Capacity. Lack of refrigerant. Ice formation on the evapora-

tor coil.

Unit must be charged (according to the nameplate)
after localizing the gas leak.

Clogged air filters. Clean filters.

In Heat Mode, Only Compressor
Runs. Outdoor and Indoor Fan
Motors are Stopped.

A/C operating in defrost cycle. Wait 10 minutes (maximum) until the unit resumes

normal operation.

Water Accumulates and
Overflows from Evaporator
Drain Pan.

Drain pan pipe or hose is clogged or the spout of
drain pan is clogged.

Disassemble plastic drain pipe from spout of evapora­tor drain pan. Flush with clean water.

Unit Does Not Operate in Desired
Mode.

The unit is in the Auto. (emergency) mode. Push button once to cancel Auto. (emergency) mode.
Faulty remote control settings. 1. If remote control symbols respond to the commands

correctly, check the unit ID Code (Standard or Alter­native). Refer to Changing Unit ID Code in the

Owner's Manual.

2. If Cool commands are OK, but Heat symbol is
skipped on LCD, refer to setting the remote to cooling only

or heat pump on the Owner's Manual.

3. Replace remote control.

Remote control low battery. Replace remote control batteries.

The Unit Receives Interference
from Other Remote Control or
the Remote Control Interferes
with Other Instruments.

Common Infrared Code. Modify the Remote Control IR transmission code.

Refer to Changing Unit ID Code
in the Owners Manual.

Power supply from outdoor unit to indoor unit is
not connected.

Printed in Israel Pg 15