Friedrich SM21J30A4 Service Manual Download Page 1

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RACServMn (01/02)

Room Air

Conditioning

SERVICE

Manual

Summary of Contents for SM21J30A4

Page 1: ...RACServMn 01 02 Room Air Room Air Room Air Room Air Room Air Conditioning Conditioning Conditioning Conditioning Conditioning SERVICE SERVICE SERVICE SERVICE SERVICE Manual Manual Manual Manual Manual...

Page 2: ...tor Run 36 37 Check Valve 37 Heat Pump Reversing Valve 37 38 Solenoid Coil Heat Pump Models 38 Valve Drain Pan 38 Heating Element 39 Sealed Refrigeration Repairs 39 40 Refrigerant Charging 40 41 Under...

Page 3: ...th the proper tools and test instruments Installation or repairs made by unqualified persons can result in hazards subjecting the unqualified person making such repairs to the risk of injury or electr...

Page 4: ...ed in the Specification Performance Data Section 8th Digit Engineering Major change 7th Digit Options 0 Straight Cool Heat Pump Models 1 1 KW Heat Strip Normal 3 3 KW Heat Strip Normal 4 4 KW Heat Str...

Page 5: ...10 5 12 0 5 8 6 2 8 2 8 7 1 03 11 4 12 3 13 6 11 9 13 0 14 0 15 5 17 0 18 0 5 7 7 2 6 0 6 5 8 3 9 0 12 0 13 0 5 5 5 7 538 6 2 7 2 7 7 8 9 9 6 8 2 8 7 11 9 13 0 17 0 18 0 6 7 507 564 689 842 507 564 8...

Page 6: ...2 1 2 9 4 0 2 1 2 9 2 1 2 9 4 0 260 260 290 260 290 250 270 290 260 290 250 WSC WSC WSC WSC WSC WSC WSC WSC WSC WSC WSC 93 103 112 101 109 119 107 116 103 111 121 115 115 115 230 208 230 208 230 208 2...

Page 7: ...Outside Air Temperature at 40 Relative Humidity Use Sunisco 4GDID Refrigerant Oil or Atmos 60 SPECIFICATIONS SQ05J10A 1 SQO6J10A 1 SQO7J10A 1 SQO8J10AB 1 BTUH Cooling 5400 6300 7100 8000 E E R Cooling...

Page 8: ...80 F Room Air Temperature and 50 Relative Humidity with 95 F Outside Air Temperature at 40 Relative Humidity Use Sunisco 4GDID Refrigerant Oil or Atmos 60 KQ05J10A 1 KQ06J10A 1 KQ08J10A 1 YQ06J10A 1 K...

Page 9: ...PERATING SUCTION 72 PRESSURES DISCHARGE 293 AMPS 6 8 ELECTRICAL RATINGS LOCKED 35 0 ROTOR AMPS R 22 CHARGE IN 14 REFRIG OUNCES COMP CHARGE IN 9 8 OIL FLUID OZ Rating Conditions 80 F Room Air Temperatu...

Page 10: ...16 20 3 16 Depth 27 3 8 27 3 8 27 3 8 27 3 8 27 3 8 27 3 8 33 5 8 Minimum Ext Into Room 3 1 16 3 1 16 3 1 16 3 1 16 3 1 16 3 3 16 3 3 16 Minimum Ext to Outside 16 15 16 16 15 16 16 15 16 16 15 16 16 1...

Page 11: ...6 10 5 10 0 10 0 10 0 10 0 Volts 115 115 115 115 230 115 230 230 208 208 208 208 Amperes 8 3 8 3 10 2 10 2 6 9 12 0 8 4 8 4 7 5 9 0 9 0 Total Watts 910 910 1145 1145 1565 1380 1850 1850 1565 1380 1830...

Page 12: ...2400 16500 23000 12300 16300 22800 E E R Cooling 11 5 9 8 9 4 9 0 9 8 9 4 9 0 E E R Heating 11 0 9 4 9 6 9 8 9 4 9 6 9 8 Volts 115 230 230 230 208 208 208 Amperes Cooling 7 2 6 0 8 3 12 0 6 5 9 1 13 0...

Page 13: ...1 70 F Inside 35 F Outside 28 69 23 87 24 46 20 22 24 38 20 16 AMPS 70 F Inside 47 F Outside 6 7 6 0 6 5 8 5 9 0 10 4 11 5 70 F Inside 35 F Outside 16 0 14 7 19 5 17 0 24 0 22 4 Watts 70 F Inside 47 F...

Page 14: ...nimum Ext Into Room 3 1 16 3 1 16 3 1 16 3 3 16 3 3 16 3 1 16 3 1 16 Minimum Ext to Outside 16 15 16 16 15 16 16 15 16 18 15 16 18 15 16 16 15 16 16 15 16 Net Weight 111 116 160 191 215 108 158 PERFOR...

Page 15: ...7 3 8 Minimum Ext Into Room 3 1 16 3 1 16 3 1 16 3 1 16 3 3 16 Minimum Ext to Outside 16 15 16 16 15 16 16 15 16 16 15 16 16 15 16 Net Weight 108 113 115 114 114 Shipping Weight 118 123 125 127 2127 P...

Page 16: ...16 Depth 27 3 8 27 3 8 27 3 8 27 3 8 33 5 8 33 5 8 33 5 8 Minimum Ext Into Room 3 1 16 3 1 16 3 1 16 3 3 16 3 3 16 3 3 16 3 3 16 Minimum Ext to Outside 16 15 16 16 15 16 16 15 16 16 15 16 18 15 16 18...

Page 17: ...6 3 4 16 3 4 16 3 4 16 3 4 16 3 4 16 3 4 Minimum Ext Into Room 7 1 2 7 1 2 7 1 2 7 1 2 7 1 2 7 1 2 Minimum Ext To Outside 9 16 9 16 9 16 9 16 9 16 9 16 Net Weight 75 85 94 83 91 101 Shipping Weight 93...

Page 18: ...ng 480 1280 1440 1000 1315 980 1255 1415 980 1280 Total Watts Heating 3550 3550 3550 870 1200 2950 2950 2950 840 1165 Hertz 60 60 60 60 60 Fuse Breaker Size 20 20 20 20 20 Amps 16 0 16 0 14 7 14 7 Wat...

Page 19: ...UCTION DISCHARGE AMPS LOCKED CHARGE IN CHARGE IN AIR DROP F ROTOR AMPS OUNCES FLUID OZ WE09A33D 58 0 22 0 80 295 4 5 20 0 20 11 8 4 9 WE12A33D 55 0 25 0 76 295 5 7 26 3 36 11 8 6 3 WE13A33D 47 1 32 9...

Page 20: ...6 70 F Inside 57 F Outside 3 9 5 5 70 F Inside 52 F Outside 3 85 5 4 70 F Inside 47 F Outside 3 8 4 1 5 3 5 6 70 F Inside 42 F Outside 3 6 5 1 70 F Inside 37 F Outside 3 4 4 8 70 F Inside 35 F Outsid...

Page 21: ...rier if so equipped It is the function of the drier to trap any moisture present in the system contaminants andlarge particulate matter Theliquidrefrigerantnextentersthemeteringdevice Themetering devi...

Page 22: ...at fall below 208 Volts For more information call the Friedrich Service Department Due to a program of continuing improvement specifications are subject to change without notice INSTALLATION NOTES Sup...

Page 23: ...point of contact as a good con nection is a must and the other probe in turn to each com pressor terminal see Figure 2 If a reading is obtained the compressor is grounded and must be replaced Compres...

Page 24: ...RNAL OVERLOAD See Figure 4 Heat generated within the compressor shell is usually due to 1 High amperage 2 Low refrigerant charge 3 Frequent recycling 4 Dirty condenser TERMINAL OVERLOAD TEST Compresso...

Page 25: ...SWITCH SQ Models See Figure 6 A five position control switch is used to regulate the operation of the fan motor and compressor The compressor can be operated with the fan operating at low medium or hi...

Page 26: ...should be continuity between terminals 2 and 3 SYSTEM CONTROL SWITCH KQ Models Only See Figure 9 The KQ Model unit uses a five position control switch to regu late the operation of the unit Function o...

Page 27: ...WITCH TEST See Figure 12 Turn knob to phase of switch to be tested There must be continuity as follows 1 Fan Only Position between terminals C and 1 2 Hi Cool Position between terminals C and 1 C and...

Page 28: ...n Only Position between terminals L1 and 2 System Control Switch WS Models SYSTEM CONTROL SWITCH WE WY Models See Figure 17 An eight position switch is used to regulate the operation of the fan motor...

Page 29: ...KM SM KL SL Models See Figure 19 A five position control switch is used to regulate the operation of the fan motor and compressor The compressor can be operated with the fan operating at low medium o...

Page 30: ...erating at low medium or high speed in the cooling or heating mode The fan motor can also be operated independently on medium speed See switch section as indicated on decorative control panel 1 Off Po...

Page 31: ...5 Hi Heat Position between terminals C and 1 C2 and 4 H and M S AR and 5 6 Med Heat Position between terminals C and 1 C2 and 4 M and M S AR and 5 7 Lo Cool Position between terminals C and 1 C2 and...

Page 32: ...oneySaver feature MoneySaver is a feature that cycles the fan with the compressor so that the fan does not run all the time This saves energy and improves dehumidification If customer prefers a consta...

Page 33: ...rror codes logged When the end of logged error codes is reached the temperature set point will appear IMPORTANT Error Codes are cleared from the log by exiting from Error Code Mode To exit on XQ model...

Page 34: ...setting while turning the knob counter clockwise raises the indoor temperature TEST Remove wires turn thermostat to its coldest position Check for continuity between the two terminals Turn thermostat...

Page 35: ...check the calibration it is suggested that the thermostat be replaced rather than calibrated Thermostat bulb must be straight to insure proper performance THERMOSTAT BULB LOCATION The position of the...

Page 36: ...line side of the circuit CAPACITOR TEST 1 Remove capacitor from unit 2 Check for visual damage such as bulges cracks or leaks DEFROST THERMOSTAT Heat Pump Models DEFROST BULB LOCATION Heat Pump Model...

Page 37: ...door coil The flow path of the refrigerant is then through the filter drier and heating capillary to the outdoor coil Failure of the slide in the check valve to seat properly in either mode of operati...

Page 38: ...S ASSEMBLY DRAIN PAN VALVE Figure 37 Figure 38 TESTING REVERSING VALVE Occasionally the reversing valve may stick in the heating or cooling position or in the mid position When stuck in the mid positi...

Page 39: ...off the compressor The room thermostat will then control the cycling of the element when the selected indoor temperature is reached Testing of the elements can be made with an ohmmeter across the term...

Page 40: ...ems such as low air HERMETIC COMPONENT REPLACEMENT The following procedure applies when replacing components in the sealed refrigeration circuit or repairing refrigerant leaks Compressor condenser eva...

Page 41: ...undercharged system will result in poor performance low pressures etc in both the heating and cooling cycle Whenever you service a unit with an undercharge of refrigerant always suspect a leak The lea...

Page 42: ...ot caused by air flow problems Improper air flow over the evaporator coil may indicate some of the same symptoms as an overcharged system An over charge can cause the compressor to fail since it would...

Page 43: ...oad Much of the area of the condenser will be relatively cool since most or all of the liquid refrigerant will be stored there The following conditions are based primarily on a system in the cooling m...

Page 44: ...area and blower wheel with an antibacterial antifungal cleaner Use a biodegradable cleaning agent and degreaser on condenser fan and condenser shroud Use warm or cold water when rinsing these items Al...

Page 45: ...zontally Stop unit After pressures equalize restart with solenoid energized If valve shifts reattempt with compressor running If still no shift replace valve Check Electrical circuit and coil Check re...

Page 46: ...r Fan motor does not run TO CORRECT POSSIBLE CAUSE PROBLEM Low voltage Thermostat not set cold enough or inoperative Compressor hums but cuts off on overload Open or shorted compressor windings Open o...

Page 47: ...g current POSSIBLE CAUSE Evaporator coil freezes up Dirty filter Restricted air flow Inoperative thermostat Short of refrigerant Inoperative fan motor Partially restricted capillary POSSIBLE CAUSE TO...

Page 48: ...advise customer of periodic cleaning of filter Replace tubular insulation on bulb Applicable models Adjust bulb bracket Applicable models Thermostat differential too narrow Plenum gasket not sealing a...

Page 49: ...coil Clean and remove old sealer Reseal reinstall and check Steam clean Adjust fan blade to 1 2 clearance from condenser coil Outside water leaks High indoor humidity TO CORRECT POSSIBLE CAUSE PROBLE...

Page 50: ...eplace anticipator Defective thermostat Heat anticipator resistor shorted Applicable models Temperature varies from comfortable to overly warm TO CORRECT PROBLEM POSSIBLE CAUSE Room temperature uneven...

Page 51: ...fer to performance data sheet on heat rise at various outdoor ambients If heat rise is satisfactory check if insulation can be added to attic or walls POSSIBLE CAUSE PROBLEM Outdoor thermostat does no...

Page 52: ...he electric element is energized POSSIBLE CAUSE PROBLEM Compressor shuts off on outdoor thermostat but element does not heat TO CORRECT Check fuse link for continuity If defective replace Check ampera...

Page 53: ...e Open or shorted element Loose connections Check continuity of coil Inspect test continuity with ohmmeter Check continuity if open replace Check continuity Check reason for failure Check voltage acro...

Page 54: ...LEM Fuse link Heating element shorted Incorrect wiring Heat relay or heater contactor coil open Troubleshooting Chart Cooling Troubleshooting Chart Cooling Troubleshooting Chart Cooling Troubleshootin...

Page 55: ...bleshooting Chart Heating Troubleshooting Chart Heating Troubleshooting Chart Heating Troubleshooting Chart Heating Troubleshooting Chart Heating Troubleshooting Chart Heating Troubleshooting Chart He...

Page 56: ...56 WIRING DIAGRAM FOR MODELS RS10J101 RS10J103 RS12J101 RS12J103 RS15J301 RM18J30 RM15J101 RM18J302 RM18J303...

Page 57: ...57 Wiring Diagram for Models SQ05J10A 1 SQ06J10A 1 SQ07J10A 1 SQ08J10B 1...

Page 58: ...58 WIRING DIAGRAM FOR MODELS KQ05J10A 1 KQ05J10A 3 KQ06J10A 1 KQ06J10A 3 KQ08J10A 1 617 581 04...

Page 59: ...59 WIRING DIAGRAM FOR MODEL YQ06J10A 1 617 581 05...

Page 60: ...60 WIRING DIAGRAM FOR MODEL SC06H10D...

Page 61: ...61 WIRING DIAGRAM FOR MODELS SS08J10A 1 SS08J10R 1 SS09J10A 1 SS10J10A 1 SS10J10R 1 SS12J10A 1 SS12J30A 1 SS12J30A 3 SS12J10R 3 SS12J10R 2 SS15J30A 1 SM14J10B 1 SM18J30A 2 SM18J30A 3 SM21J30A 4...

Page 62: ...62 WIRING DIAGRAM FOR MODELS SL24J30A 1 SL24J30A 3 SL28J30A 1 SL33J30 2...

Page 63: ...63 Wiring Diagram for KS KM KL Models...

Page 64: ...64 WIRING DIAGRAM FOR MODELS ES12J33 ES15J33A EM18J34A EL24J35 EL33J35 EK12J33A EK18J34A 2 EK18J34A 3...

Page 65: ...65 WIRING DIAGRAM FOR MODELS YS13J33 YM18J34A YL24J35A...

Page 66: ...66 WIRING DIAGRAM FOR MODEL YS09J10A...

Page 67: ...Set Hour features are nonfunctional Test Mode overrides the three minute lockout all delays for compressor and fan motor start speed change and no delay when switching modes T est Mode default settin...

Page 68: ...SPEED 1 4 until the display shows the desired fan speed F1 is the lowest setting SLEEP SETTING F2 is LOW F3 is MEDIUM F4 is HIGH Touch SMART FAN light on and the fan speed will adjust automatically t...

Page 69: ...SLEEP SETTING LOW F2 is MED F3 is HIGH and SF is SMART FAN With SMART FAN on the fan speed will adjust au tomatically to maintain the desired comfort level TO SET THE CLOCK TIME Touch SET HOUR Clock...

Page 70: ...ICH AIR CONDITIONING CO FRIEDRICH AIR CONDITIONING CO FRIEDRICH AIR CONDITIONING CO Post Office Box 1540 San Antonio Texas 78295 1540 4200 N Pan Am Expressway San Antonio Texas 78218 5212 210 357 4400...

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