Friedrich UE08, UE10, UE12 User Manual

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Thru-the-WallSeries

Service and Parts

Manual

Thru-the-WallSeries

115 Volts UE08

230 Volts UE10UE12

UE08/UE10/UE12 (05/05)

CONTENTS

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

2. 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

3. 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 .

—2—

1.3 SPECIFICATIONS

1.3.1 FOR UE08A13B/UE10A33B/UE12A33B

 

 

 

ITEMS

MODELS

UE08A13B

UE10A33B

UE12A33B

REMARK

 

 

 

 

 

 

POWER SUPPLY

 

1Ø, 115V, 60Hz

1Ø, 208/ 230V, 60Hz

 

 

CAPACITY

(Btu/h)

8,000

9,800/10,000

11,400/11,700

 

COOLING

INPUT

(W)

830

1,040/1,060

1,210/1,250

 

RUNNING CURRENT (A)

7.5

5.2/4.7

6.2/5.8

 

 

 

 

E.E.R.

(Btu/W.h)

10.0

9.4

9.4

 

 

CAPACITY

(Btu/h)

3,850

9,200/11,200

 

HEATING

INPUT

(W)

1,230

2,900/3,500

 

 

RUNNING CURRENT (A)

10.7

14.0/15.3

 

OPERATING COOLING

INDOOR (°C)

 

26.7 (DB)

19.4 (WB)

 

 

OUTDOOR (°C)

 

 

35 (DB)

23.9 (WB)

 

 

TEMPERA-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

INDOOR (°C)

 

21.1 (DB)

15.6 (WB)

 

 

TURE

HEATING

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OUTDOOR (°C)

 

 

8.3 (DB)

6.1 (WB)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

REFRIGERANT (R-22)CHARGE(g)

380(13.2 OZ)

 

440(15.5 OZ)

 

470(16.6 OZ)

 

EVAPORATOR

 

 

2 ROW 12 STACKS

 

2 ROW 11 STACKS LOUVERED-

 

 

 

 

 

 

 

FIN TYPE

CONDENSER

 

 

2 ROW 17 STACKS, L-BENDEDTYPE

 

 

 

 

 

 

 

 

 

FAN, INDOOR

 

 

 

 

TURBO FAN

 

 

 

 

 

 

 

 

FAN, OUTDOOR

 

 

PROPELLER TYPE FAN WITH SLINGER-RING

 

 

 

 

 

 

 

 

 

FAN SPEEDS (FAN/COOLING/HEATING)

 

1/ 2/ 2

 

 

 

 

 

 

 

 

 

 

 

 

FAN MOTOR

 

 

 

 

6 POLES

 

 

 

 

 

 

 

 

 

 

OPERATION CONTROL

 

 

ROTARY SWITCH

 

 

 

 

 

 

 

 

 

 

ROOM TEMP. CONTROL

 

 

THERMOSTAT

 

 

 

 

 

 

 

 

 

AIR DIRECTION CONTROL

VERTICAL LOUVER (RIGHT & LEFT)

 

 

 

 

 

 

 

 

HORIZONTAL LOUVER (UP & DOWN)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CONSTRUCTION

 

 

 

 

TOP-DOWN

 

 

 

 

 

 

 

 

 

 

 

 

 

ELECTRIC HEATER

 

 

1.2KW, 115V

 

 

3.5KW, 208/230V

 

 

 

 

 

 

 

 

 

 

COMPRESSOR

EXTERNAL OVERLOAD PROTECTOR

 

PROTECTOR

 

 

 

 

FAN MOTOR

INTERNAL THERMAL PROTECTOR

 

 

 

 

 

 

 

ELECTRIC HEATER

FUSE LINK, BIMETAL THERMOSTAT

 

POWER CORD

 

 

1.6m (3 WIRE WITH GROUDING)

 

 

 

 

 

 

 

 

 

 

 

 

ATTACHMENT PLUG (CORD-CONNECTEDTYPE)

 

 

 

 

 

 

 

 

 

 

 

 

DRAIN SYSTEM

 

 

SPLASHED BY FAN SLINGER

 

 

 

 

 

 

 

 

 

 

 

NET WEIGHT

 

(lbs/kg)

73/33

 

80/36

 

81/37

 

 

 

 

 

 

 

 

 

 

 

 

DIMENSION

 

 

 

(inch)

 

2421/32 x 1413/32 x 1921/32

 

 

(W x H x D)

 

 

 

(mm)

 

 

626 x 366 x 499

 

 

SLEEVE DIMESION

 

(inch)

 

257/8 x 1517/32 x 1623/32

 

OPTIONAL

(W x H x D)

 

 

 

(mm)

 

656 x 394 x 425

 

PART

 

 

 

 

 

 

 

 

 

SLEEVE DEPTH

 

(inch)

 

20

 

 

 

 

 

 

 

 

 

 

 

 

WITH FRONT GRILLE

 

(mm)

 

510

 

 

 

—3—

1.4 FEATURES

Designed for cooling only.

Powerful and quiet cooling.

Top-downchassis for the simple installation and service.

Built in adjustable THERMISTOR and THERMOSTAT.

Washable one-touchfilter.

Compact size.

1.5 CONTROL LOCATIONS

• 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.

CAUTION

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.

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.

• 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.

PULL OPEN / PUSH CLOSE

—4—

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.

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-installthe component by referring to the removal procedure.

Figure 1

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.

Figure 2

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-installthe components by referring to the

removal procedure. (See Fig. 3)

(Refer to the circuit diagram found on pages Figure 3 29~30 in this manual and on the control box.)

—5—

2.2 AIR HANDLING PARTS

2.2.1ORIFICE, 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-installthe components by referring to the removal procedures, above.

2.2.2FAN

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-installthe components by referring to the removal procedures, above.

Figure 4

Figure 5

Figure 6

Figure

Figure 8

—6—

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-installthe 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-installthe 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-installthe 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-installthe components by referring to the removal procedures, above.

—7—

Figure 9

Figure 10

Figure 11

Figure 12

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-installthe components by referring to the removal procedure, above.

(Use only one ground-markedhole, , for ground connection.)

8. If the supply cord of this appliance is damaged, it must be replaced with the factory-authorizedand specified cord.

Figure 13

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-installthe components by referring to the

removal procedures, above.

Figure 14

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-installthe components by referring to the

Figure 15

removal procedure, above.

—8—

2.4 REFRIGERATION CYCLE

CAUTION

Discharge the refrigerant system using a FreonTM Recovery System.

Install a valve for the recovery before venting the Freon. Remove the valve when finished.

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-installthe 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-installthe 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-installthe components by referring to the notes

– on page 13-14.

Figure 16

Figure 17

—9—

NOTES

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-offtubes.

3.Solder service valves into the pinch-offtube ports, leaving the valves open.

4.Solder the pinch-offtubes 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.

CAUTION

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.

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 theHigh-side,the balance will be put in the suction line through the access valve which you installed as the system was opened.

2)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-sidewill 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 Lowside.

b.Watch the Low-sidegauge; 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-offtool with the unit still running and clamp on to thepinch-offtube. Using a tube cutter, cut thepinch-offtube about 2 inches from thepinch-offtool. Usesil-fossolder and solderpinch-offtube closed. Turn off the unit, allow it to set for a while, and then test the leakage of thepinch-offconnection.

—10—