Friedrich UE08 Building instructions

UE08/UE10/UE12 (05/05)

Thru-the-Wall Series

Service and Parts

Manual

115 Volts UE08

230 Volts UE10 UE12

—2—

1. PREFACE

1.1 SAFETY PRECAUTIONS ...............................2

1.2 INSULATION RESISTANCE TEST.................2

1.3 SPECIFICATIONS ..........................................3

1.4 FEATURES.....................................................4

1.5 CONTROL LOCATIONS.................................4

DISASSEMBLY INSTRUCTIONS

2.1 MECHANICAL PARTS....................................5

2.1.1 FRONT GRILLE.....................................5

2.1.2 CABINET................................................5

2.1.3 CONTROL BOX.....................................5

2.2 AIR HANDLING PARTS..................................6

2.2.1

ORIFICE, HEATER ASSY AND TURBO FAN

.........6

2.2.2 FAN........................................................6

2.2.3 SHROUD................................................7

2.3 ELECTRICAL PARTS.....................................7

2.3.1 MOTOR..................................................7

2.3.2 COMPRESSOR.....................................7

2.3.3 CAPACITOR..........................................7

2.3.4 POWER CORD......................................8

2.3.5 THERMOSTAT ......................................8

2.3.6 ROTARY SWITCH.................................8

2.4 REFRIGERATION CYCLE..............................9

2.4.1 CONDENSER........................................9

2.4.2 EVAPORATOR......................................9

2.4.3 CAPILLARY TUBE.................................9

TROUBLESHOOTING GUIDE

3.1 OUTSIDE DIMENSIONS...............................12

3.2 PIPING SYSTEM ..........................................12

3.3 TROUBLESHOOTING GUIDE......................13

4. SCHEMATIC DIAGRAM

4.1 CIRCUIT DIAGRAM......................................18

5. EXPLODED VIEW..................................19

6. REPLACEMENT PARTS LIST.......20

1. PREFACE

This SERVICE MANUAL provides various service information, including the mechanical and electrical

parts etc. This room air conditioner was manufactured and assembled under a strict quality control system.

The refrigerant is charged at the factory. Be sure to read the safety precautions prior to servicing the unit.

1.1 SAFETY PRECAUTIONS

1. When servicing the unit, set the ROTARY SWITCH

or POWER SWITCH to OFF(O) and unplug the

power cord.

2. Observe the original lead dress.

If a short circuit is found, replace all parts which

have been overheated or damaged by the short

circuit.

3. After servicing the unit, make an insulation

resistance test to protect the customer from being

exposed to shock hazards.

1.2

INSULATION RESISTANCE TEST

1. Unplug the power cord and connect a jumper

between 2 pins (black and white).

2. The grounding conductor (green or green & yellow)

is to be open.

3. Measure the resistance value with an ohm meter

between the jumpered lead and each exposed

metallic part on the equipment at all the positions

(except OFF or O) of the ROTARY SWITCH or

POWER SWITCH.

4. The value should be over 1MΩ.

CONTENTS

—3—

1.3 SPECIFICATIONS

1.3.1 FOR UE08A13B/UE10A33B/UE12A33B

REMARK

POWER SUPPLY

CAPACITY (Btu/h)

INPUT (W)

RUNNING CURRENT

(A)

E.E.R. (Btu/W.h)

CAPACITY (Btu/h)

INPUT (W)

RUNNING CURRENT

(A)

INDOOR (°C)

OUTDOOR (°C)

INDOOR (°C)

OUTDOOR (°C)

REFRIGERANT (R-22) CHARGE(g)

EVAPORATOR

CONDENSER

FAN, INDOOR

FAN, OUTDOOR

FAN SPEEDS (FAN/COOLING/HEATING)

FAN MOTOR

OPERATION CONTROL

ROOM TEMP. CONTROL

CONSTRUCTION

ELECTRIC HEATER

COMPRESSOR

FAN MOTOR

ELECTRIC HEATER

DRAIN SYSTEM

NET WEIGHT (lbs/kg)

DIMENSION (inch)

(WxHxD) (mm)

SLEEVE DIMESION (inch)

(WxHxD) (mm)

SLEEVE DEPTH (inch)

WITH FRONT GRILLE (mm)

1Ø, 115V, 60Hz 1Ø, 208/ 230V, 60Hz

8,000 9,800/10,000 11,400/11,700

830 1,040/1,060 1,210/1,250

7.5 5.2/4.7 6.2/5.8

10.0 9.4 9.4

3,850 9,200/11,200

1,230 2,900/3,500

10.7 14.0/15.3

26.7 (DB) 19.4 (WB)

35 (DB) 23.9 (WB)

21.1 (DB) 15.6 (WB)

8.3 (DB) 6.1 (WB)

380(13.2 OZ) 440(15.5 OZ) 470(16.6 OZ)

2 ROW 12 STACKS 2 ROW 11 STACKS

2 ROW 17 STACKS, L-BENDED TYPE

TURBO FAN

PROPELLER TYPE FAN WITH SLINGER-RING

1/ 2/ 2

6 POLES

ROTARY SWITCH

THERMOSTAT

VERTICAL LOUVER (RIGHT & LEFT)

HORIZONTAL LOUVER (UP & DOWN)

TOP-DOWN

1.2KW, 115V 3.5KW, 208/230V

EXTERNAL OVERLOAD PROTECTOR

INTERNAL THERMAL PROTECTOR

FUSE LINK, BIMETAL THERMOSTAT

1.6m (3 WIRE WITH GROUDING)

ATTACHMENT PLUG (CORD-CONNECTED TYPE)

SPLASHED BY FAN SLINGER

73/33 80/36 81/37

2421/32 x14

13/32 x19

21/32

626 x 366 x 499

257/8x15

17/32 x16

23/32

656 x 394 x 425

510

MODELS

ITEMS

OPERATING

TEMPERA-

TURE

AIR DIRECTION CONTROL

POWER CORD

PROTECTOR

HEATING

COOLING

HEATING

LOUVERED-

FIN TYPE

UE08A13B UE10A33B UE12A33B

OPTIONAL

PART

1.4 FEATURES

• Designed for cooling only.

• Powerful and quiet cooling.

• Top-down chassis for the simple installation and service.

1.5 CONTROL LOCATIONS

• Built in adjustable THERMISTOR and THERMOSTAT.

• Washable one-touch filter.

• Compact size.

• VENTILATION

Push the lever to the "CLOSE" position to cool, heat or recirculate room air only.

Pull the lever to the "OPEN" position to exhaust smoke or stale air from the room.

This feature is best used in conjunction with the FAN ONLY position.

—4—

PULL OPEN / PUSH CLOSE

•OPERATION

A slight burning odor may come from the unit

when first switching to HEAT after the cooling

season is over. This odor, caused by fine dust

particles on the heater, will disappear quickly.

This is normal operation.

Off - Turns the air conditioner off.

Fan Only - The low fan speed operation without cooling (heating).

Low Cool - Cooling with the low speed fan operation.

High Cool - Cooling with the high speed fan operation.

Low Heat - Heating with the low speed fan operation.

High Heat - Heating with the high speed fan operation.

Turn the Temperature Knob to the desired setting. The central position is a normal

setting for average conditions. You can change this setting, if necessary, in

accordance with your temperature preference.

The thermostat automatically controls cooling or heating, but the fan runs

continuously whenever the air conditioner is in operation. If the room is too warm,

turn the thermostat control clockwise. If the room is too cool, turn the thermostat

control counterclockwise.

When the air conditioner has been operating in the

cooling or heating mode and is turned off or set to the fan

only position, wait at least 3 minutes before resetting to

the cooling operation again.

CAUTION

—5—

2.1 MECHANICAL PARTS

2.1.1 FRONT GRILLE

1. Open the inlet grille downward.

2. Remove the screw which fastens the front grille.

3. Pull the front grille from the right side.

4. Remove the front grille. (See Fig. 1)

5. Re-install the component by referring to the

removal procedure.

2.1.2 CABINET

1. After disassembling the FRONT GRILLE, remove

the 9 screws which fasten the cabinet at the both

sides and the top. (See Fig. 2)

Keep these for later use.

2.1.3 CONTROL BOX

1. Remove the front grille. (Refer to section 2.1.1)

2. Remove the screw which fasten the control

box. (See Fig. 3)

3. Pull the control box from the barrier.(See Fig.3)

4. Discharge the capacitor by placing a 20,000 ohm

resistor across the capacitor terminals.

5. Disconnect two wire housings in the control box.

6. Pull the control box forward completely.

7. Re-install the components by referring to the

removal procedure. (See Fig. 3)

(Refer to the circuit diagram found on pages

29~30 in this manual and on the control box.)

2. DISASSEMBLY INSTRUCTIONS

— Prior to disassembling the unit, make sure that the POWER switch is set to OFF and the power cord is

unplugged from the wall receptacle.

Figure 1

Figure 2

Figure 3

Figure 7

—6—

2.2 AIR HANDLING PARTS

2.2.1 ORIFICE, HEATER ASSY AND

TURBO FAN

1. Remove the front grille. (Refer to section 2.1.1)

2. Remove the cabinet. (Refer to section 2.1.2)

3. Remove the 2 screws which fasten the

evaporator at the left side and the right side.

(See Fig. 4)

4. Move the evaporator sideward carefully.

5. Remove the 2 terminals carefully

(See Fig. 5, Electric Heater Model only)

6. Remove the 4 screws which fasten the orifice.

(See Fig. 5)

7. Remove the orifice. (See Fig. 5)

8. Using handheld pliers, remove the clamp which

secures the turbo fan. (See Fig. 6)

9. Remove the turbo fan with pliers or your hand,

without touching blades. (See Fig. 7)

10. Re-install the components by referring to the

removal procedures, above.

2.2.2 FAN

1. Remove the cabinet. (Refer to section 2.1.2)

2. Remove the brace and shroud cover.

(Refer to section 2.2.1)

3. Remove the 6 screws which fasten the condenser.

4. Move the condenser sideways carefully.

5. Using handheld pliers, remove the clamp which

secures the fan.

6. Remove the fan. (See Fig. 8)

7. Re-install the components by referring to the

removal procedures, above.

Figure 4

Figure 5

Figure 6

Figure 8

—7—

2.2.3 SHROUD

1. Remove the fan. (Refer to section 2.2.2)

2. Remove the screw which fastens the shroud.

3. Remove the shroud. (See Fig. 9)

4. Re-install the components by referring to the

removal procedures, above.

2.3 ELECTRICAL PARTS

2.3.1 MOTOR

1. Remove the cabinet. (Refer to section 2.1.2)

2. Remove the clamp cord and disconnect the wire

housing in control box. (Refer to section 2.1.3)

3. Remove the turbo fan. (Refer to section 2.2.2)

4. Remove the fan. (Refer to section 2.2.2)

5. Remove the 4 or 2 screws which fasten the motor.

(See Fig. 10)

6. Remove the motor.

7. Re-install the components by referring to the

removal procedures, above.

2.3.2 COMPRESSOR

1. Remove the cabinet. (Refer to section 2.1.2)

2. Discharge the refrigerant system using a FreonTM

Recovery System.

Install a valve for the recovery, before venting the

Freon. Remove the valve when finished.

3. Disconnect the 3 leads from the compressor.

4. After purging the unit completely, unbraze the

suction and discharge tubes at the compressor

connections.

5. Remove the 3 nuts and the 3 washers which

fasten the compressor. (See Fig. 11)

6. Remove the compressor.

7. Re-install the components by referring to the

removal procedures, above.

2.3.3 CAPACITOR

1. Remove the control box. (Refer to section 2.1.3)

2. Remove knobs and the tips which fasten the

display panel.

3. Remove 2 screws and unfold the control box.

(See Fig. 12)

4. Remove the Rotary Switch.

5. Remove the screw and the clamp which fastens

the capacitor. (See Fig. 12)

6. Disconnect all the leads on the capacitor terminals.

7. Re-install the components by referring to the

removal procedures, above.

Figure 9

Figure 10

Figure 11

Figure 12

—8—

2.3.4 POWER CORD

1. Remove the control box. (Refer to section 2.1.3)

2. Unfold the control box. (Refer to section 2.3.3)

3. Disconnect the grounding screw from the control

box.

4. Disconnect 2 receptacles.

5. Remove a screw which fastens the clip cord.

6. Pull the power cord. (See Fig. 13)

7. Re-install the components by referring to the

removal procedure, above.

(Use only one ground-marked hole, , for ground

connection.)

8. If the supply cord of this appliance is damaged, it

must be replaced with the factory-authorized and

specified cord.

2.3.5 THERMOSTAT

1. Remove the control box. (Refer to section 2.1.3)

2. Unfold the control box. (Refer to section 2.3.3)

3. Remove the 2 screws which fasten the thermostat.

4. Disconnect all the leads of thermostat terminals.

5. Remove the thermostat. (See Fig. 14)

6. Re-install the components by referring to the

removal procedures, above.

2.3.6 ROTARY SWITCH

1. Remove the control box. (Refer to section 2.1.3)

2. Unfold the control box. (Refer to section 2.3.3)

3. Remove 2 screws which fasten the rotary switch.

4. Disconnect all the leads of the rotary switch

terminals.

5. Remove the rotary switch. (See Fig. 15)

6. Re-install the components by referring to the

removal procedure, above.

Figure 13

Figure 14

Figure 15

—9—

2.4 REFRIGERATION CYCLE

2.4.1 CONDENSER

1. Remove the cabinet. (Refer to section 2.1.2)

2. Remove the brace and the shroud cover.

(Refer to section 2.2.1)

3. Remove the 5 screws which fasten the condenser.

4. After discharging the refrigerant completely into a

FreonTM Recovery System, unbraze the

interconnecting tube at the condenser

connections.

5. Remove the condenser.

6. Re-install the components by referring to the notes

– on pages 13-14. (See Fig. 16)

2.4.2 EVAPORATOR

1. Remove the cabinet. (Refer to section 2.1.2)

2. Discharge the refrigerant completely – into a

FreonTM Recovery System.

3. Remove the 2 screws which fasten the evaporator

at the left side and the right side.

4. Move the evaporator sideward carefully and then

unbraze the interconnecting tube at the evaporator

connectors.

5. Remove the evaporator.

6. Re-install the components by referring to the notes

– on pages 13-14. (See Fig. 17)

2.4.3 CAPILLARY TUBE

1. Remove the cabinet. (Refer to section 2.1.2)

2. After discharging the refrigerant completely – into

a FreonTM Recovery System, unbraze the

interconnecting tube at the capillary tube.

3. Remove the capillary tube.

4. Re-install the components by referring to the notes

– on page 13-14.

Figure 16

Figure 17

Discharge the refrigerant system using a FreonTM

Recovery System.

Install a valve for the recovery before venting the

Freon. Remove the valve when finished.

CAUTION

—10—

—Replacement of the refrigeration components

1. When replacing the refrigeration components,be

sure todischarge the refrigerant system using

a FreonTM recovery System.

Install a valve for the recovery before venting the

Freon. Remove the valve when finished.

2. After discharging the unit completely, remove the

desired component, and unbrace the pinch-off

tubes.

3. Solder service valves into the pinch-off tube ports,

leaving the valves open.

4. Solder the pinch-off tubes with Service valves.

5. Evacuate as follows.

1) Connect the vacuum pump, as illustrated Fig.

18A.

2) Start the vacuum pump, slowly open manifold

valves A and B with two full turns

counterclockwise and leave the valves closed.

The vacuum pump is now pulling through valves

A and B up to valve C by means of the manifold

and entire system.

3) Operate the vacuum pump for 20 to 30 minutes,

until 600 microns of vacuum is obtained. Close

valves A and B, and observe vacuum gauge for

a few minutes. A rise in pressure would

indicate a possible leak or moisture remaining in

the system. With valves A and B closed, stop

the vacuum pump.

4) Remove the hose from the vacuum pump and

place it on the charging cylinder. See Fig. 18B.

Open valve C.

Discharge the line at the manifold connection.

5) The system is now ready for final charging.

6. Recharge as follows :

1) Refrigeration cycle systems are charged from the

High-side. If the total charge cannot be put

in the High-side, the balance will be put in the

suction line through the access valve which you

installed as the system was opened.

Connect the charging cylinder as shown in Fig. 18B.

With valve C open, discharge the hose at the

manifold connection.

3) Open valve A and allow the proper charge to

enter the system. Valve B is still closed.

4) If more charge is required, the high-side will not

take it. Close valve A.

5) With the unit running, open valve B and add the

balance of the charge.

a. Do not add the liquid refrigerant to the Low-

side.

b. Watch the Low-side gauge; allow pressure to

rise to 30 lbs.

c. Turn off valve B and allow pressure to drop.

d. Repeat steps B and C until the balance of the

charge is in the system.

6) When satisfied the unit is operating correctly,

use the pinch-off tool with the unit still running

and clamp on to the pinch-off tube. Using a tube

cutter, cut the pinch-off tube about 2 inches from

the pinch-off tool. Use sil-fos solder and solder

pinch-off tube closed. Turn off the unit, allow it to

set for a while, and then test the leakage of the

pinch-off connection.

NOTES

If high vacuum equipment is used, just crack

valves A and B for a few minutes, then open

slowly with the two full turns counterclockwise.

This will keep oil from foaming and being

drawn into the vacuum pump.

CAUTION

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