Friedrich Air Conditioner Sv08 Users Manual
SV08 to the manual bfbfb865-904c-4bb2-be19-e5a9267c6dc4
2015-02-02
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Room Air Conditioner Service and Parts Manual Off Med Fan Temperature Warmer Cooler High Cool Low Fan Med Cool Low Cool Mode Slider Casement 115Volts • SV08A10A SV08 / SV10 / SV12 (01/05) • SV10A10A • SV12A10A CONTENTS 1. PREFACE 2.4 REFRIGERATION CYCLE ..............................9 2.4.1 CONDENSER.........................................9 2.4.2 EVAPORATOR.......................................9 2.4.3 CAPILLARY TUBE ...............................10 1.1 SAFETY PRECAUTIONS................................2 1.2 INSULATION RESISTANCE TEST .................2 1.3 SPECIFICATIONS...........................................3 1.4 FEATURES......................................................4 1.5 CONTROL LOCATIONS .................................4 3. INSTALLATION 3.1 HOW TO INSTALL THE UNIT.......................12 3.2 CHECKING INSTALLATION .........................12 3.3 HOW TO DRAIN............................................12 3.4 WINDOW REQUIREMENTS .........................13 3.5 INSTALLATION KITS CONTENTS ...............13 3.6 HORIZONTAL SLIDING WINDOW INSTALLATION .....14 3.7 CASEMENT WINDOW INSTALLATION .......15 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 AIR GUIDE AND TURBO FAN ...............6 2.2.2 FAN ........................................................6 2.2.3 SHROUD ................................................7 2.3 ELECTRICAL PARTS......................................7 2.3.1 OVERLOAD PROTECTOR ....................7 2.3.2 COMPRESSOR......................................7 2.3.3 CAPACITOR...........................................8 2.3.4 POWER CORD ......................................8 2.3.5 THERMOSTAT .......................................8 2.3.6 ROTARY SWITCH .................................8 2.3.7 MOTOR ..................................................9 4. TROUBLESHOOTING GUIDE 4.1 OUTSIDE DIMENSIONS ...............................16 4.2 PIPING SYSTEM...........................................16 4.3 TROUBLESHOOTING GUIDE ......................17 5. SCHEMATIC DIAGRAM 5.1 CIRCUIT DIAGRAM ......................................21 5.2 CIRCUIT DIAGRAM ......................................22 6. EXPLODED VIEW ..................................23 7. REPLACEMENT PARTS LIST ........24 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 1.2 INSULATION RESISTANCE TEST 1. When servicing the unit, set the ROTARY SWITCH or POWER SWITCH to OFF and unplug the power cord. 2. Observe the original wire insulation. 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. Unplug the power cord and connect a jumper between 2 pins (black and white). 2. The grounding conductor (green) 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) of the ROTARY SWITCH. 4. The value should be over 1MΩ. —2— 1.3 SPECIFICATIONS 1.3.1 FOR SV08A10A / SV10A10A / SV12A10A MODELS ITEMS SV08A10A SV10A10A SV12A10A 1Ø115V, 60Hz POWER SUPPLY 8,000 10,000 12,000 (W) 840 1,050 1,260 (A) (BTU/W.h) 7.7 9.6 11.5 COOLING CAPACITY (Btu/h) INPUT RUNNING CURRENT E.E.R OPERATING INDOOR (°C) CONDITION OUTDOOR (°C) REFRIGERANT (R-22) CHARGE 9.5 460g(16.2 oz) CONDENSER 19.4(WB)** 35(DB)* 23.9(WB)** 520g(18.3 oz) 2 ROW 16 STACKS, SLIT FIN TYPE EVAPORATOR 26.7(DB)* 615g(21.7 oz) 3 ROW 16 STACKS, SLIT FIN TYPE 2 ROW 23 STACKS, 3 ROW 23 STACKS, LOUVER FIN TYPE LOUVER FIN TYPE TURBO FAN FAN, INDOOR AXIAL FAN FAN, OUTDOOR 2/3 FAN SPEEDS, FAN/COOLING 6 POLES FAN MOTOR OPERATION CONTROL ROTARY SWITCH ROOM TEMP. CONTROL THERMOSTAT VERTICAL LOUVER (RIGHT & LEFT) AIR DIRECTION CONTROL HORIZONTAL LOUVER (UP & DOWN) TOP-DOWN CHASSIS CONSTRUCTION PROTECTOR OVERLOAD PROTECTOR COMPRESSOR INTERNAL THERMAL PROTECTOR FAN MOTOR 3 WIRE WITH GROUNDING POWER CORD ATTACHMENT PLUG (CORD-CONNECTED TYPE) DRAIN PIPE SPLASHED BY FAN SLINGER DRAIN SYSTEM NET WEIGHT OUTSIDE DIMENSION (W x H x D) (lbs/kg) 66/30 77/35 (inch) 141/2 x 201/2 x 233/5 (mm) 368 x 521 x 607 * DB:Dry Bulb ** WB:Wet Bulb —3— 79/36 1.4 FEATURES • Built-in adjustable THERMOSTAT • Washable one-touch filter • Compact size • Reliable and efficient rotary compressor is equipped. • Designed for COOLING ONLY. • Powerful and whispering cooling. • Simple installation and service. • Low air-intake, top cooled-air discharge. 1.5 CONTROL LOCATIONS 1.5.1 COOLING ONLY MODEL • VENTILATION The ventilation lever must be in the CLOSE position in order to maintain the best cooling conditions. When fresh air is necessary in the room, set the ventilation lever OPEN position. The damper is opened and room air is exhausted. CLOSE VENT OPEN • TEMPERATURE Thermostat will automatically control the temperature of the room. Select a higher grade for a cooler temperature in the room. The temperature is selected by moving the knob to the desired position. • MODE - Turns air conditioner off. - Med speed fan operation without cooling. Off Med Fan High Cool - Low speed fan operation without cooling. - Cooling with high speed fan operation. Temperature - Cooling with med speed fan operation. Warmer Cooler - Cooling with low speed fan operation. NOTE! Before using the air conditioner secure the front grille with two screws enclosed with the owner’s manual. Tem pera ture Warm Med Fan er Off Cool er High Cool Low Fan Low Cool Med Cool Mod e 1. Open the inlet grille downward and remove the air filter. 2. Fasten the front grille with screws. 3. Reinstall the air filter. 4. Close the inlet grille. Inlet Grille —4— Low Fan Med Cool Low Cool Mode 2. DISASSEMBLY INSTRUCTIONS — Before the following disassembly, set POWER SWITCH to OFF and disconnect the power cord. 2.1 MECHANICAL PARTS 2.1.1 FRONT GRILLE 1. Open the inlet grille downward and remove the air filter. 2. Remove the screws which fasten the front grille.(See Figure 1) 3. Pull the front grille from the right side. 4. Remove the front grille.(There are 4 hooks.) 5. Re-install the components by referring to the removal procedure, above. Tem pera ture War mer Med Fan Off Coo ler High Coo l Low Fan Low Coo l Med Coo l Mod e 2.1.2 CABINET Inlet Grille 1. After disassembling the FRONT GRILLE, remove the 6 screws which fasten the cabinet at both sides.(See Figure 2) 2. Remove the 4 screws which fasten the cabinet at back. 3. Remove the cabinet. 4. Re-install the components by referring to the removal procedure, above. Figure 1 Tem pera ture War mer Med Fan Off Coo ler High Coo l Low Fan Low Coo l Med Coo l Mod e 2.1.3 CONTROL BOX 1. Remove the front grille. (Refer to section 2.1.1) 2. Remove the cabinet. (Refer to section 2.1.2) 3. Remove the 1 screw which fasten the power cord. (See Figure 3) 4. Disconnect the grounding screw from the evaporator channel. 5. Remove the 2 screws which fasten the control box.(See Figure 3) 6. Remove the housing which connects motor wire in the control box. 7. Remove three leads which connect compressor. 8. Discharge the capacitor by placing a 20,000 ohm resistor across the capacitor terminals. 9. Raise the control box upward completely. 10. Re-install the components by referring to the removal procedure, above. (Refer to the circuit diagram found on pages 21~22 in this manual and on the control box.) Figure 2 Tem pera ture War mer Med Fan Off Coo ler High Coo l Low Fan Low Coo l Med Coo l Mod e Figure 3 —5— 2.2 AIR HANDLING PARTS 2.2.1 AIR GUIDE 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 control box. (Refer to section 2.1.3) 4. Remove the 4 screws which fasten the brace. 5. Remove the brace. 6. Remove the 2 screws which fasten the upper air guide. (See Figure 4) 7. Remove the upper air guide. 8. Remove the 2 screws which fasten the evaporator. 9. Move the evaporator forward while pulling it upward slightly. (See Figure 5) 10. Remove orifice by pulling two taps. 11. Remove the clamp with a hand plier which secures the turbo fan. 12. Remove the turbo fan. (See Figure 6) 13. Remove the motor. (Refer to section 2.3.7) 14. Remove the 2 screws which fastens the lower air guide from the base pan. 15. Remove the 2 screws which fasten the motor mount from the base pan. 16. Remove the 2 screws which fasten the lower air guide and motor mount. 17. Move the lower air guide backward and pull out from the base pan. (Move the lower air guide carefully.) 18. Re-install the components by referring to the removal procedure, above. Figure 4 Figure 5 2.2.2 FAN 1. Remove the cabinet. (Refer to section 2.1.2) 2. Remove the brace (Refer to section 2.2.1) 3. Remove 6 screws which fasten the condenser. 4. Move the condenser to the right carefully. 5. Remove the clamp which secures the fan with a pair of hand pliers. 6. Remove the fan. (See Figure 7) 7. Re-install by referring to the removal procedure. Figure 6 Figure 7 —6— 2.2.3 SHROUD 1. Remove the fan. (Refer to section 2.2.2) 2. Remove the shroud. (See Figure 8) 3. Re-install the components by referring to the removal procedure, above. Figure 8 2.3 ELECTRICAL PARTS 2.3.1 OVERLOAD PROTECTOR 1. Remove the cabinet. (Refer to section 2.1.2) 2. Remove the nut which fastens the terminal cover. 3. Remove the terminal cover. (See Figure 9) 4. Remove all the leads from the overload protector. 5. Remove the overload protector. 6. Re-install the components by referring to the removal procedure, above. 2.3.2 COMPRESSOR Figure 9 1. Remove the cabinet. (Refer to section 2.1.2) 2. Discharge the refrigerant system using a FreonTM Recovery System. If there is no valve to attach the recovery system to install one (such as a WATCO A-1) before venting the FreonTM. Leave the valve in place after servicing the system. 3. Remove the overload protector. (Refer to section 2.3.1) 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 to the base pan. 6. Remove the compressor. (See Figure 10) 7. Re-install the components by referring to the removal procedure, above. Figure 10 —7— 2.3.3 CAPACITOR 1. Remove the cabinet. (Refer to section 2.1.2) 2. Remove the screw and the clamp which fasten the capacitor. 3. Disconnect all the leads of capacitor terminals. 4. Re-install the components by referring to the removal procedure, above. (See Figure 11) Te m pe ra tu re W ar Med Fan m er Co ole Off Hig Co h ol r Lo w Fan Lo w Co ol Med Co ol Mo de Figure 11 2.3.4 POWER CORD 1. Remove the cabinet. (Refer to section 2.1.2) 2. Disconnect the grounding screw from the control box. 3. Disconnect the 2 receptacles. 4. Remove a screw which fastens the cord clip. (See Figure 12) 5. Remove the power cord. 6. Re-install the component by referring to the removal procedure, above. (Use only one ground-marked hole for ground connection.) 7. If the supply cord of this appliance is damaged, it must be replaced by the same cord that can be obtained from an authorized parts dealer. Figure 12 2.3.5 THERMOSTAT 1. Remove the cabinet. (Refer to section 2.1.2) 2. Remove the 2 screws which fasten the thermostat. 3. Disconnect 2 leads of thermostat terminals. 4. Remove the thermostat. 5. Re-install the components by referring to the above removal procedure. (See Figure 13) Figure 13 2.3.6 ROTARY SWITCH 1. Remove the cabinet. (Refer to section 2.1.2) 2. Remove the 2 screws which fasten the rotary switch. 3. Disconnect all the leads of the rotary switch terminals. 4. Remove the rotary switch. 5. Re-install the components by referring to the above removal procedure. (See Figure 14) Figure 14 —8— 2.3.7 MOTOR 1. Remove the cabinet. (Refer to section 2.1.2) 2. Remove the turbo fan. (Refer to section 2.2.1) 3. Remove the fan. (Refer to section 2.2.2) 4. Remove the 4 screws which fasten the motor from the Motor Mount. (See Figure 15) 5. Remove the motor. 6. Re-install the components by referring to the removal procedure, above.(See Figure 15) 2.4 REFRIGERATING CYCLE Figure 15 2.4.1 CONDENSER CAUTION Discharge the refrigerant system using a FreonTM Recovery System. If there is no valve to attach the recovery system to install one (such as a WATCO A-1) before venting the FreonTM. Leave the valve in place after servicing the system. 1. Remove the cabinet. (Refer to section 2.1.2) 2. Remove the 4 screws which fasten the brace. 3. Remove the 4 screws which fasten the condenser and shroud. (See Figure 16) 4. Remove the 2 screws which fasten the condenser and base pan. 5. After discharging the refrigerant completely, unbraze the interconnecting tube at the condenser connections. 6. Remove the condenser. 7. Re-install the components by referring to notes on p10. (See Figure 16) Figure 16 2.4.2 EVAPORATOR 1. Remove the cabinet. (Refer to section 2.1.2) 2. Remove the control box.(Refer to section 2.1.3) 3. Remove the upper air guide. (Refer to section 2.2.1) 4. Remove the 2 screws which fasten the evaporator to the lower air guide. 5. Carefully move the evaporator sideways. (Refer to section 2.2.1) 6. After discharging the refrigerant completely, unbraze the interconnecting tube at the evaporator connections. 7. Remove the evaporator. 8. Re-install the components by referring to notes on page 10. (See Figure 17) Figure 17 —9— 2.4.3 CAPILLARY TUBE 3. Remove the capillary tube. 4. Re-install the components by referring to notes on page 11. 1. Remove the cabinet. (Refer to section 2.1.2) 2. After discharging the refrigerant completely, unbraze the interconnecting tube at the capillary tube. (see caution on previous page) NOTES — Replacement of the refrigerant. 1. When replacing the refrigerant, be sure to Discharge the refrigerant system using a FreonTM recovery System. If there is no valve to attach the recovery system to, install one (such as a WATCO A-1) before venting the FreonTM. Leave the valve in place after servicing the system. 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. Evacuate as follows. 1) Connect the vacuum pump, as illustrated figure 18A, on page 11. 2) Start the vacuum pump and slowly open manifold valves A and B with two full turns counterclockwise and leave the valves open. 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, adjust valves A and B so they are opened only slightly 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 vaccum 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 figure 18B, on page 11. 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. 2) Connect the charging cylinder as shown in figure 18B, on page 11. 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 must remain 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 Lowside. 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 that 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" from the top of 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. —10— 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. COMPOUND GAUGE CONDENSER (HIGH PRESSURE SIDE) MANIFOLD GAUGE A B CAPILLARY TUBE SEE INSETS BELOW EVAPORATOR (LOW PRESSURE SIDE) COMPRESSOR LOW HI A B B A EXTERNAL VACUUM PUMP CHARGING CYLINDER C Figure 18B-Charging Figure 18A-Pulling Vacuum —11— 3. INSTALLATION Awning 3.1 HOW TO INSTALL THE UNIT 1. To avoid vibration and noise, make sure the unit is installed securely and firmly. 2. Install the unit where the sunlight does not shine directly on the unit. If the unit receives direct sunlight, build an awning to shade the cabinet. 3. There should be no obstacle, like a fence, within 20" which might restrict heat radiation from the condenser. 4. To prevent reducing performance, install the unit so that louvers of the cabinet are not blocked. 5. Install the unit with a slight downward slope towards the outside (about 1/4"), to ensure that all condensate drains outside. 6. Install the unit with its bottom portion 30~60" above the interior floor level. 7. Stuff the foam gasket between the top of the unit and the wall to prevent air and insects from getting into the room. 8. The power cord must be connected to an independent circuit. The green wire must be grounded. 9. Connect the drain tube to the base pan hole in the rear side if you need to run a drain hose.(consult a dealer). Plastic hose or equivalent may be connected to the drain tube. Fence Cooled air About 1/4" 30"~60" Heat radiation Over 20" Figure 19 3.2 CHECKING INSTALLATION The setting conditions must be checked prior to initial start up. The items mentioned below are important check points to review when the installation is complete. 1. A grounding wire (Green or Green and Yellow) is provided in the power cord. The green wire must be grounded. 2. Connect to a single-outlet 15A circuit. 3. To avoid vibration or noise, make sure the air conditioner is securely installed. 4 Avoid placing furniture or draperies in front of the air inlet and outlet. BASE PAN BOTTOM Figure 20 1 DRAIN CAP 3.3. HOW TO DRAIN (When using drain pipe) The air conditioner must be installed with a slight tilt towards the outside for proper water drainage. On exceptionally hot and humid days the air conditioner may overflow condensed water to the outside. If the air conditioner is used in a high humidity zone, exchange the DRAIN CAP for the DRAIN PIPE.(See Figure 20, Figure 21) —12— BASE PAN BOTTOM 2 Figure 21 DRAIN PIPE 3.4 WINDOW REQUIREMENTS 1. These instructions are for a horizontal sliding or a casement window. 2. The electrical outlet must be within reach of the power cord. For installation in a casement window, the window frame assembly and the side of the building must be adequate to support the weight of the air conditioner. 21 1/2" min. 21"1 min. 40 /2" max. 15 1/2" min. 16 1/2" max. 15 1/2" min. Horizontal sliding window Casement window 3.5 INSTALLATION KIT CONTENTS Window Locking Bracket Curtain Frame Side Guide Curtain Upper Guide Bracket Support Bracket Foam Seal Gasket Leveling bolt & nut Side Guide Seal Side Guide Window Track Seal Bolt (2) Nut (2) Washer (2) Type A (9) —13— Type B (3) Type C (8) 3.6 HORIZONTAL SLIDING WINDOW INSTALLATION Bolt 1. Loosely attach the support bracket to the bottom of bracket using bolts, washers, and nuts. Attach the leveling bolt and nut. (See Figure 22) Bracket Washer Nut Leveling Bolt & Nut Support Bracket Figure 22 2. Remove protective backing from window track seal and apply seal to window track. (See Figure 23) Window jamb Window Type ype C screw scre 11 8 /16" 3. Measure and lightly mark a line 8-1/4" from window jamb. Center the support bracket assembly on the window track and fasten with 4-type C screws. (See Figure 23) Window Track Seal Window Track Figure 23 4. Put the support bracket against the outside wall and tighten the bolts on top of the bracket. Adjust the leveling bolt so that the air conditioner will be installed with a very slight tilt (about 1/4") downward toward the outside for proper drainage. Tighten the nut. (See Figure 24) NOTE: DO NOT drill a hole in the bottom of the base pan. The air conditioner is designed to operate with the bottom of the base pan approximately half-full of water. Ou tsi about 1/4" de W all Figure 24 Fastening Side Guides Upper Guide 5. Fasten side guides to the sides of the air conditioner using 3-type A screws per guide. start with first screw at middle of guide. (See Figure 25) Tem pera ture Warm Med Fan er Off Cool er High Cool Low Fan Low Cool Med Cool Mod e Side Guide Figure 25 6. Fasten upper guide on the top of the air conditioner using 3-type A screws. (See Figure 25) 7. Measure height of window opening from top of bracket assembly as shown Fig. 26. Subtract 20-3/4". Mark this measurement on curtain and cut the curtain. (See Figure 26) Figure 26 —14— 8. Slide curtain into curtain frame. Slide curtain frame assembly into side guides of the air conditioner cabinet. Make sure curtain is firmly enclosed on all sides by the frame. (See Figure 27) Curtain Frame Figure 27 Curtain 9. Cut side guide seal into 2 equal lengths. Remove protective backing and apply it to the rear side of cabinet side guides, starting just below curtain frame assembly. Pinch off excess length so seal is even with the bottom of side guide. (See Figure 28) 10. Place air conditioner in window opening. It should sit on bracket assembly so that curtain frame and cabinet side guides are against top and side window jambs. Mate front of bracket with base guide attached to the bottom of base pan. 11. Drill 1/8 inch holes in window track through the existing holes on base guide. Screw 4-type C screws through the holes. (See Figure 29) 12. If this is a casement window installation, proceed to casement window installation. If not, slide inner window sash firmly against side of the cabinet. 13. Drill 1/8 inch hole in window jamb to align with the existing holes in the curtain frame. Attach curtain frame to window frame with 2-type B screws. (See Figure 29) NOTE: Check all seals and plug any remaining air gaps with a suitable weatherproof caulk. 14. If this is a casement window installation, proceed to casement window installation. If not, stuff the foam seal strip between the vertical sash and the window glass. (See Figure 30) 15. Attach the window locking bracket with a type B screw. (See Figure 30) Apply weather seal to side guides just below edge of Curtain Frame. Figure 28 Base pan Temp eratu re Warm r High Cool Low Fan Low Cool Med Cool Mode Type C screw Window Track Type B screw Figure 29 Foam seal strip —15— Off Coole 3.7 CASEMENT WINDOW INSTALLATION • Installation procedure is the same as that described in steps 1 through 11 and step 13 of the horizontal sliding window installation. • If the window opening is wider than 15-3/4" you will need to install a filler panel. Make this panel from 3/4 inch thick wood and run it the full length of the window. Attach it securely to the window frame and paint it to protect it from the weather. • Since styles and sizes of casement windows vary widely, it is advisable to have the air conditioner installed by someone skilled in this type of installation. Med Fan er Base Guide Bracket Tempe rature Warme Med Fan r Off Cooler High Cool Low Fan Low Cool Med Cool Mode Window locking bracket Figure 30 4. TROUBLESHOOTING GUIDE 4.1 OUTSIDE DIMENSIONS Unit: mm(inchs) 368(14 1/2) 521(20 1/2) 607(23 3/5) 4.2 PIPING SYSTEM CONDENSER COIL FAN CAPILLARY TUBE MOTOR COMPRESSOR TURBO FAN EVAPORATOR COIL Following is a brief description of the important components and their functions in the refrigeration system. Refer to Fig. 31 to follow the refrigeration cycle and the flow of the refrigerant in the cooling cycle. ROOM AIR CONITIONER CYCLE OF REFRIGERATION EVAPORATOR COIL CONDENSER COIL COMPLETE LIQUID BOIL OFF POINT COOLED AIR SUCTION LINE COOL LOW PRESSURE VAPOR VAPOR INLET HOT DISCHARGED AIR ROOM AIR HEAT LOAD OUTSIDE COOLING AIR FOR REFRIGERANT PASS THROUGH MOTOR COMPRESSOR OIL LIQUID PRESSURE DROP LIQUID OUTLET (LIQUID REFRIGERANT) HIGH PRESSURE VAPOR LIQUID REFRIGERANT CAPILLARY TUBE Figure 31 —16— LOW PRESSURE VAPOR 4.3 TROUBLESHOOTING GUIDE In general, possible trouble is classified in two kinds. The 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 runs but poor cooling. Ineffective Cooling Check cold air circulation for smooth flow. Dirty indoor coil (Heat exchanger) Check outdoor coil (heat exchanger) & the fan operation. Check heat load increase. Clean condenser. Check for gas leakage. Not on separate circuit. Malfunction of fan Clogged air filter Repair gas leak. Replace unit if the unit is beyond repair. Obstruction at air outlet Check inside gas pressure. Adjustment of refrigerant charge. Correct above problem Malfunction of compressor. Check clogging in refrigeration system. Repair clogging in refrigeration system. Replacement of compressor. Satisfactory operation with temperature difference of inlet & outlet air ; 44~50°F(7~10°C) —17— Fails to Start Check power source. Check circuit breaker and fuse. Check control switch setting. Gas leakage of feeler bulb of thermostat Check control switch. Compressor only fails to start. Fan only fails to start. Improper wiring. Drop of power voltage. Improper thermostat setting. Defective of fan motor capacitor. Defective of compressor capacitor. Loose terminal connection. Capacitor check. Irregular motor resistance ( ). Irregular motor insulation ( ). Improper wiring. Replacement Replacement of fan motor. Irregular motor resistance ( ) Irregular motor insulation ( ) Tests normal but fails to start. Replacement of compressor (locking of rotor, metal). Replacement of compressor (Motor damaged) —18— ROOM AIR CONDITIONER VOLTAGE LIMITS NAME PLATE RATING MINIMUM MAXIMUM 115V ±10% 103.5V 126.5V 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. Capacitor (Discharge capacitor before testing.) Test capacitor. Replace if not within ±10% of manufacturer's rating. Replace if shorted, open, or damaged. Will not rotate Fan blade hitting shroud or blower wheel hitting scroll. Realign assembly. Units using slinger ring for condenser fan must have /4 to 5/16 inch clearance to the base. If it hits the base, shim up the bottom of the fan motor with mounting screw(s). 1 Check fan motor bearings; if motor shaft will not rotate, replace the motor. Fan motor runs intermittently Revolves on overload. Check voltage. If not within limits, call an electrician. Test capacitor. Check bearings. Does the fan blade rotate freely? If not, replace fan motor. Pay attention to any change from high speed to low speed. If the speed does not change, replace the motor. Fan motor noise Compressor will not run, but fan motor runs Fan If cracked, out of balance, or partially missing, replace it. Blower If cracked, out of balance, or partially missing, replace it. Loose clamper Tighten it. Worn bearings If knocking sounds continue when running or loose, replace the motor. If the motor hums or noise appears to be internal while running, replace motor. Voltage Check voltage. 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. Replace the switch if circuit is open. —19— COMPLAINT Compressor will not run, but fan motor runs. Compressor cycles on overload. Compressor cycles on overload. Compressor cycles on overload. Insufficient cooling or heating Excessive noise CAUSE REMEDY Thermostat Check the position of knob If not at the coldest setting, advance the knob to this setting and restart unit. Check continuity of the thermostat. Replace thermostat if circuit is open. Capacitor (Discharge capacitor before servicing.) Check the capacitor. Replace if not within ±10% of manufacturers rating. Replace if shorted, open, or damaged. Compressor Check the compressor for open circuit or ground. If open or grounded, replace the compressor. Overload Check the compressor overload, if externally mounted. Replace if open. (If the compressor temperature is high, remove the overload, cool it, and retest.) Voltage Check the voltage. 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. inspect the interior surface of the condenser; if restricted, clean carefully with a vacuum cleaner (do not damage fins) or brush. Clean the interior base before reassembling. Condenser fins (damaged) If condenser fins are closed over a large area on the coil surface, head pressures will increase, causing the compressor to overload. Straighten the fins or replace the coil. Capacitor Test capacitor. Wiring Check the terminals. If loose, repair or replace. Refrigeration System Check the system for a restriction. Air filter If restricted, clean or replace. Exhaust damper door Close if open. Unit undersized Determine if the unit is properly sized for the area to be cooled. Blower or fan Check the set screw or clamp. If loose or missing, correct. If the blower or fan is hitting the air guide, rearrange the air handling parts. Copper tubing Remove the cabinet carefully and rearrange tubing so that it doesn't contact the cabinet, compressor, shroud, and barrier. —20— 5. SCHEMATIC DIAGRAM 5.1 CIRCUIT DIAGRAM ■ MODEL : SV10A10A / SV1210A S: Service Parts N: Non Service Parts PART NO. LOCATION NO. DESCRIPTION 1 POWER CORD 2 ROTARY SWITCH 3 FAN MOTOR 4 CAPACITOR 5 THERMOSTAT 6 COMPRESSOR SV10A10A SV12A10A - - REQ'TY PER SET MARKS 1 S 67300501 1 S 67303015 1 S 1 S 1 S 1 S 67300709 67300403 67301614 67301615 —21— 5.2 CIRCUIT DIAGRAM ■ MODEL : SV08A10A S: Service Parts N: Non Service Parts LOCATION NO. PART NO. DESCRIPTION SV08A10A REQ'TY PER SET MARKS 1 POWER CORD 67300005 1 S 2 ROTARY SWITCH 67300501 1 S 3 FAN MOTOR 67303014 1 S 4 CAPACITOR 67300712 1 S 5 THERMOSTAT 67300403 1 S 6 COMPRESSOR 67301612 1 S —22— 6. EXPLODED VIEW 130910 148000 554030 352390-2 359011 349001 249950 346811 349600 269310 149980 266003 354210 W0CZZ Tem pe rat ure Wa Me Fand rm Off er Co ole Hig Co h ol r Low Fan Low Co ol Me Co d ol Mo de 130410 264110 352390-1 149410 359012 135312 349480 152312 352115 147582-1 552111 145200 147582-2 567502 147581 554160 352113 35211A 135301 135303 550140 —23— 7. REPLACEMENT PARTS LIST ■ MODEL : SV08A10A, SV10A10A, SV12A10A P/No LOCATION No. DESCRIPTION 130410 130910 135303 135312 147581 147582 148000 149410 149980 152312 264110 266003 269310 346811 349001 349480 349600 352380 352390 354210 359011 359012 550140 552111 554030 554160 567502 W0CZZ 731273 237900 132100 749740-1 749740-2 W4810-1 W4810 BASE ASSEMBLY, SINGLE CABINET ASSEMBLY, SINGLE GRILLE INLET GRILLE ASSEMBLY, FRONT VANE, HORIZONTAL VANE, VERTICAL BRACE KNOB ASSEMBLY SHROUD ASSEMBLY FILTER ASSEMBLY POWER CORD ASSEMBLY SWITCH, ROTARY THERMOSTAT ASSEMBLY MOTOR ASSEMBLY, SINGLE DAMPER ORIFICE MOUNT, MOTOR AIR GUIDE-LOWER ASSEMBLY AIR GUIDE ASSEMBLY-UPPER EVAPORATOR ASSEMBLY FAN ASSEMBLY AXIAL FAN ASSEMBLY, TURBO ISOLATOR, COMP TUBE ASSEMBLY, CAPILLARY CONDENSER ASSEMBLY COMPRESSOR O.L.P CAPACITOR, DRAWING INSTALLATION KIT WINDOW, DISPLAY FRAME, PANEL GUIDE, UPPER GUIDE, FRAME BRACKET SUPPORT, BRACKET SV08A10A SV10A10A 67302911 SV12A10A 67302910 67303706 67306105 67306007 67306204 67306254 67306255 67303904 67304104 67303109 67304305 67300006 67300501 67300403 67300005 67303014 67300007 67303015 67303505 67303407 67303608 67302715 67302714 67302411 67302412 67303206 67302610 67301900 67302109 67302108 67303310 67301612 67301410 67300712 67302110 67303311 67301614 67301409 67300709 67306306 67308101 67308100 67304004 67306402 67303905 67303906 —24— 67301615 67301407 67300713 REMARK R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R MEMO —25— MEMO —26— Use Factory Certified Parts... 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.: 3828A20190X Printed in the U.S.A SV08 / SV10 / SV12 (01/05)
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