Friedrich Uni-Fit US08B10A Service And Parts Manual
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Friedrich Uni-Fit US08B10A Service And Parts Manual

Thru-the-wall series
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See also: Operation & Installation Manual
Thru-the-Wall Series
Service and Parts
Manual
Thru-the-Wall Series
115 Volts US08B US10B US12B
230 Volts US10B US12B
Unifit. Cool (04/06)

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Summary of Contents for Friedrich Uni-Fit US08B10A

  • Page 1 Thru-the-Wall Series Service and Parts Manual Thru-the-Wall Series 115 Volts US08B US10B US12B 230 Volts US10B US12B Unifit. Cool (04/06)

  • Page 2: Table Of Contents

    SERVICE MANUAL This 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.

  • Page 3: Specifications

    1.3 SPECIFICATIONS 1.3.1 FOR US08B10A-A/US10B10A-A/US12B10A-A MODELS ITEMS POWER SUPPLY COOLING CAPACITY (Btu/h) INPUT RUNNING CURRENT (A) E.E.R (Btu/w.h) REFRIGERANT (R-22) CHARGE(g) OPERATING INDOOR (°C) TEMPERATURE OUTDOOR (°C) EVAPORATOR CONDENSER FAN, INDOOR FAN, OUTDOOR FAN SPEEDS, FAN/COOLING FAN MOTOR OPERATION CONTROL ROOM TEMP.
  • Page 4 1.3.2 FOR US10B30A-A/US12B30A-A MODELS ITEMS POWER SUPPLY COOLING CAPACITY INPUT RUNNING CURRENT E.E.R. (Btu/W.h) INDOOR (°C) OPERATING TEMPERA-TURE 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 AIR DIRECTION CONTROL CONSTRUCTION COMPRESSOR PROTECTOR...

  • Page 5: Features

    1 F. • The setting appears in the display. POWER • To turn the air conditioner ON, push this button. To turn the air conditioner OFF, push the button again. • This button takes priority over any other button.

  • Page 6: Disassembly Instructions

    2. DISASSEMBLY INSTRUCTIONS — Prior to disassembling the unit, make sure that the POWER is 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.

  • Page 7: Air Handling Parts

    2.2 AIR HANDLING PARTS 2.2.1 ORIFICE, 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.

  • Page 8: Shroud

    2.2.3 SHROUD 1. Remove the fan. (Refer to section 2.2.2) 2. Remove the shroud. (See Fig. 9) 3. 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.

  • Page 9: Power Cord

    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 Base pan. 4. Disconnect 2 receptacles. 5. Remove a screw which fastens the clip cord. 6.

  • Page 10: Refrigeration Cycle

    2.4 REFRIGERATION CYCLE CAUTION Discharge the refrigerant system using a Freon 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. (Refer to section 2.2.1) 3.
  • Page 11 NOTES — Replacement of the refrigeration cycle. 1. When replacing refrigeration components, be sure to discharge the refrigerant system using a Freon 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 unbraze the pinch-off tubes.
  • Page 12 Equipment needed: Vacuum pump, Charging cylinder, Manifold gauge, Brazing equipment, Pinch-off tool capable of making a vapor-proof seal, Leak detector, Tubing cutter, Hand Tools to remove components, Service valve. Figure 17A-Pulling Vacuum Figure 17B-Charging —12—...

  • Page 13: Outside Dimensions

    Refer to Fig. 18 to follow the refrigeration cycle and the flow of the refrigerant in the cooling cycle. EVAPORATOR COILS COOLED LIQUID PRESSURE DROP " ROOM AIR CONDITIONER CYCLE OF REFRIGERATION SUCTION LINE COMPLETE LIQUID COOL LOW PRESSURE VAPOR BOIL OFF POINT ROOM AIR HEAT LOAD...

  • Page 14: Troubleshooting Guide

    3.3 TROUBLESHOOTING GUIDE In general, possible trouble is classified in two causes. One is called Starting Failure which is caused from an electrical defect, and the other is Ineffective Air Conditioning caused by a defect in the refrigeration circuit and/or improper application. Unit is running but cooling is ineffective Check cold air circulation for smooth flow.
  • Page 15 Check power source. Check control switch setting. Only compressor fails to start. Drop in power voltage. Defective compressor capacitor. Check capacitor. Replacement. Irregular motor resistance ( ) Irregular motor insulation ( ) Replacement of compressor (Motor damaged) Fails to Start Improper thermostat setting Loose terminal connection.
  • Page 16 COMPLAINT Fan motor will not run. No power Power supply cord Rotary switch Wire disconnected or connection loose Capacitor (Discharge capacitor before testing.) Will not rotate Fan motor runs Cycles on overload. intermittently Fan motor noise. Grommets Turbo fan Loose set screw Worn bearings CAUSE Check voltage at outlet.

  • Page 17: Room Air Conditioner Voltage Limits

    Wiring Rotary Capacitor (Discharge capacitor before servicing.) Compressor Overload ROOM AIR CONDITIONER VOLTAGE LIMITS NAME PLATE RATING 115V 208/230V CAUSE Check voltage. See the limits on the preceding. page. If not within limits, call an electrician. Check the wire connections, if loose, repair or replace the terminal.
  • Page 18 COMPLAINT Compressor cycles Voltage on overload. Overload Fan motor Condenser air flow restriction Condenser fins (damaged) Capacitor Wiring Refrigerating system Insufficient cooling or Air filter heating Exhaust damper door Unit undersized Excessive noise. Blower or fan Copper tubing CAUSE Check the voltage. See the limits on the preced- ing page.

  • Page 19: Schematic Diagram

    4. SCHEMATIC DIAGRAM 4.1 CIRCUIT DIAGRAM • MODEL : US08B10A-A, US10B10A-A, US12B10A-A, US10B30A-A, US12B30A-A LOCATION DESCRIPTION 264110 POWER CORD 346811 FAN MOTOR W0CZZ CAPACITOR 567502 OVERLOAD PROTECTOR PART NO. US08B10A-A US10B10A-A US12B10A-A 67300012 67300012 67300013 67303021 67303022 67303023 67300710 67300717 67300717 67301406 67301409...

  • Page 20: Exploded View

    5. EXPLODED VIEW • MODEL: US08B10A-A, US10B10A-A, US12B10A-A, US10B30A-A, US12B30A-A 152302 135303 359012 W48602 354210 349480 264110 W6631 268714 263230 268712 238310 237200 267110 749180 147581 147582-1 147582-2 346811 352380 349600 147900 130410 352115 35211A W0CZZ 352113 —20— 130900 149980 435301 435300 554031...

  • Page 21: Replacement Parts List

    US08B10A-A 435301 US08B10A-A 130410 US08B10A-A 567502 US08B10A-A 550140 US08B10A-A 749180 US08B10A-A LGE # Description Friedrich # 67303708 3090A20017D CABINET ASSEMBLY 67306256 4758A30045A LOUVER, VERTICAL 67306257 4758A30045B LOUVER, VERTICAL 67306205 4758A20058A LOUVER HORIZONTAL 67306106 3530A11001A GRILLE, INLET 67306012 3531A18005A GRILLE ASSEMBLY,FRONT...
  • Page 22 US10B10A-A 435300 US10B10A-A 435301 US10B10A-A 130410 US10B10A-A 567502 US10B10A-A 550140 US10B10A-A 749180 US08B10A-A Friedrich # LGE # Description 67303708 3090A20017D CABINET ASSEMBLY 67306256 4758A30045A LOUVER, VERTICAL 67306257 4758A30045B LOUVER, VERTICAL 67306205 4758A20058A LOUVER HORIZONTAL 67306106 3530A11001A GRILLE, INLET 67306012 3531A18005A GRILLE ASSEMBLY, FRONT...
  • Page 23 US12B10A-A 435301 US12B10A-A 130410 US12B10A-A 567502 US12B10A-A 550140 US12B10A-A 749180 US12B10A-A LGE # Description Friedrich # 67303708 3090A20017D CABINET ASSEMBLY 67306256 4758A30045A LOUVER, VERTICAL 67306257 4758A30045B LOUVER, VERTICAL 67306205 4758A20058A LOUVER HORIZONTAL 67306106 3530A11001A GRILLE, INLET 67306012 3531A18005A GRILLE ASSEMBLY, FRONT...
  • Page 24 US10B30A-A 550140 US10B30A-A 352115 US10B30A-A 552113 US10B30A-A 352113 US10B30A-A 35211A US10B30A-A 749180 US10B30A-A Friedrich # LGE # Description 67303708 3090A20017D CABINET ASSEMBLY 67306256 4758A30045A LOUVER, VERTICAL 67306257 4758A30045B LOUVER, VERTICAL 67306205 4758A20058A LOUVER HORIZONTAL 67306106 3530A11001A GRILLE, INLET 67306012 3531A18005A GRILLE ASSEMBLY, FRONT...
  • Page 25 US12B30A-A 435301 US12B30A-A 130410 US12B30A-A 567502 US12B30A-A 550140 US12B30A-A 749180 US12B30A-A LGE # Description Friedrich # 67303708 3090A20017D CABINET ASSEMBLY 67306256 4758A30045A LOUVER, VERTICAL 67306257 4758A30045B LOUVER, VERTICAL 67306205 4758A20058A LOUVER HORIZONTAL 67306106 3530A11001A GRILLE, INLET 67306012 3531A18005A GRILLE ASSEMBLY, FRONT...
  • Page 26 FRIEDRICH AIR CONDITIONING CO. Visit our web site at www.friedrich.com Post Office Box 1540 • 4200 N. Pan Am Expressway • San Antonio, Texas 78295-1540 • (210) 357-4400 • FAX (210) 357-4480 P/NO.:3828A20294S Printed in the U.S.A UNi-fit. Cool (04/06)

This manual is also suitable for:

Uni-fit us12b10aUni-fit us12b30aUni-fit us10b10aUs08b10a-aUs10b10a-aUs12b10a-a ... Show all

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