Thru-the-Wall Series Service and Parts Manual Thru-the-Wall Series 115 Volts US08B10A:Starting with serial number LFMK00001 US10B10A:Starting with serial number LGBK00003 US12B10A:Starting with serial number LGBK00001 230 Volts US10B30A US14B30A US12B30B: Starting with serial number LGBK00001 Unifit.
CONTENTS 2.4 REFRIGERATION CYCLE.................................10 2.4.1 CONDENSER ......................................10 2.4.2 EVAPORATOR ....................................10 2.4.3 CAPILLARY TUBE...............................10 1. PREFACE 1.1 SAFETY PRECAUTIONS ...............................2 1.2 INSULATION RESISTANCE TEST.................2 1.3 SPECIFICATIONS ..........................................3 1.4 FEATURES .....................................................5 1.5 CONTROL LOCATIONS .......
1.3 SPECIFICATIONS 1.3.1 FOR US08B10A/US10B10A/US12B10A MODELS US08B10A US10B10A US12B10A REMARK ITEMS POWER SUPPLY 1Ø, 115V, 60Hz COOLING CAPACITY (Btu/h) 8,000 9,800 11,500 (W) 830 1,110 1,310 RUNNING CURRENT (A) 7.5 10.2 12.0 E.E.R 9.6 8.8 8.8 545g(19.2OZ) 470g(16.6OZ) 500g(17.6OZ) INPUT (Btu/w.h) REFRIGERANT (R-22) CHARGE(g) OPERATING INDOOR (°C) TEMPERATURE OUTDOOR (°C) 26.7(DB) 19.4(WB) 35(DB) 23.
1.3.2 FOR US10B30A/US12B30B/US14B30A MODELS US10B30A US12B30B US14B30A REMAR ITEMS 1Ø, 230/208V, 60Hz POWER SUPPLY (Btu/h) 10,000/9,800 11,500/11,200 13,200/12,800 INPUT (W) 1,060/1,040 1,310/1,270 1,550/1,500 RUNNING CURRENT (A) 4.7/5.2 6.0/6.4 7.1/7.6 (Btu/W.h) 9.4/9.4 8.8/8.8 8.5/8.5 480g(16.9OZ) 485g(17.1OZ) 545g(19.2OZ) COOLING CAPACITY E.E.R. OPERATING TEMPERA-TURE INDOOR (°C) 26.7(DB) 19.4(WB) OUTDOOR (°C) 35(DB) 23.
1.4 FEATURES • Designed for cooling only. • Built in adjustable THERMOSTAT. • Powerful and quiet. • Slide out chassis for the simple installation and service. • Washable one-touch filter. • Compact size. 1.5 CONTROL LOCATIONS 1.5.1 COOLING ONLY MODEL • OPERATION REMOTE CONTROL SIGNAL RECEIVER TEMPERATURE SETTING • Use this button to automatically control the temperature of the room. The temperature can be set within a range of 60°F to 86°F by increments of 1°F. • The setting appears in the display.
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. 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. Figure 1 2.1.2 CABINET 1.
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. 4) 4. Move the evaporator to the side carefully. Figure 4 5. Remove the orifice. (See Fig. 5) Figure 5 8. Using handheld pliers, remove the clamp which secures the turbo fan. (See Fig. 6) Figure 6 9.
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. 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.
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. 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.
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. (Refer to section 2.2.1) 3. Remove the 7 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.
NOTES — Replacement of the refrigeration cycle. 1. When replacing refrigeration components, be sure to 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. After discharging the unit completely, remove the desired component, and unbraze 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.
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.
3. TROUBLESHOOTING GUIDE 3.1 OUTSIDE DIMENSIONS 20-3/32" (499mm) 14-13/32" (366mm) 24" (610mm) 3.2 PIPING SYSTEM CONDENSER COILS FAN CAPILLARY TUBE MOTOR COMPRESSOR TURBO FAN EVAPORATOR COILS : REFRIGERANT FLOW Following is a brief description of the important components and their functions in the refrigeration system. Refer to Fig. 18 to follow the refrigeration cycle and the flow of the refrigerant in the cooling cycle.
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 Ineffective Cooling Check cold air circulation for smooth flow. Check outdoor coil (heat exchanger) & the fan operation. Dirty indoor coil (Heat exchanger) Check gas leakage.
Fails to Start Check power source. Check circuit breaker and fuse. Check control switch setting. Check control board Only compressor fails to start. Only fan fails to start. Improper wiring. Drop in power voltage. Improper thermostat setting Defect of fan motor capacitor. Defective compressor capacitor. Loose terminal connection. Check capacitor. Irregular motor resistance ( ). Irregular motor insulation ( ). Improper wiring Replacement.
COMPLAINT Fan motor will not run. CAUSE REMEDY No power Check voltage at outlet. Correct if none. Power supply cord Check voltage to rotary switch. If none, check power supply cord. Replace cord if circuit is open. Rotary switch Check switch continuity. Refer to wiring diagram for terminal identification. Replace switch if defective. Wire disconnected or connection loose Connect wire. Refer to wiring diagram for terminal identification. Repair or replace loose terminal.
COMPLAINT Compressor will not run, but fan motor runs. CAUSE REMEDY Voltage Check voltage. See the limits on the preceding. page. If not within limits, call an electrician. Wiring Check the wire connections, if loose, repair or replace the terminal. If wires are off, refer to wiring diagram for identification, and replace. Check wire locations. If not per wiring diagram, correct. Rotary Check for continuity, refer to the wiring diagram for terminal identification.
COMPLAINT Compressor cycles on overload. Insufficient cooling or heating Excessive noise. REMEDY CAUSE Voltage Check the voltage. See the limits on the preceding page. If not within limits, call an electrician. Overload Check overload, if externally mounted. Replace if open. (If the compressor temperature is high, remove the overload, cool, and retest.) Fan motor If not running, determine the cause. Replace if required. Condenser air flow restriction Remove the cabinet.
4. SCHEMATIC DIAGRAM 4.
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6. REPLACEMENT PARTS LIST • MODEL: US08B10A US08B10A(TXC121BPMK0.AWYBFRD) LocNo FRD P/NO Description REMARK W0CZZ 67300726 CAPACITOR,DRAWING R 130410 67302925 BASE ASSEMBLY,SINGLE R 130900 67303712 CABINET R 731273 67306311 INSTALL PART ASSEMBLY.
• MODEL: US10B10A US10B10A(TXC101BPMK0.AWYBFRD) LocNo FRD P/NO Description REMARK W0CZZ 67300724 CAPACITOR,DRAWING R 130410 67302926 BASE ASSEMBLY,SINGLE R 130900 67303712 CABINET R 731273 67306311 INSTALL PART ASSEMBLY.
• MODEL: US12B10A US12B10A(TXC081BPMK0.AWYBFRD) LocNo FRD P/NO Description REMARK W0CZZ 67300724 CAPACITOR,DRAWING R 130410 67302926 BASE ASSEMBLY,SINGLE R 130900 67303712 CABINET R 731273 67306311 INSTALL PART ASSEMBLY.
• MODEL: US10B30A US10B30A(TXC103BPMK0.AWYBFRD) LocNo FRD P/NO DESCRIPTION REMARK W0CZZ 67300723 CAPACITOR,DRAWING R 130410 67302924 BASE ASSEMBLY,SINGLE R 130900 67303712 CABINET R 731273 67306311 INSTALL PART ASSEMBLY.
• MODEL: US12B30B US12B30B(TXC123BPMK0.AWYBFRD) LocNo FRD P/NO DESCRIPTION REMARK W0CZZ 67300723 CAPACITOR,DRAWING R 130410 67302926 BASE ASSEMBLY,SINGLE R 130900 67303712 CABINET R 731273 67306311 INSTALL PART ASSEMBLY.
• MODEL: US14B30A US14B30A(TXC143BPMK0.AWYBFRD) LocNo FRD P/NO DESCRIPTION REMARK 130410 67302926 BASE ASSEMBLY,SINGLE R 130900 67303712 CABINET R 731273 67306311 INSTALL PART ASSEMBLY.
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.:3828A20294U Printed in the U.S.A UNi-fit.
