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INDEX

S-11 CHECKING LOSS OF CHARGE PROTECTOR .............................................................................................. 25

S-15 CHECKING CAPACITOR ................................................................................................................................25

S-15A Resistance Check ................................................................................................................................. 26

S-15B Capacitance Check ............................................................................................................................. 26

S-16 CHECKING MOTORS ..................................................................................................................................... 27

S-16B Checking Fan & Blower Motor (ECM Motors) .................................................................................... 27

S-16C Checking ECM Motor Windings .......................................................................................................... 30

S-16D Checking GEX13™ Motors .................................................................................................................. 30

S-17 CHECKING COMPRESSOR WINDINGS ........................................................................................................ 31

S-17A Resistance Test .................................................................................................................................... 31

S-17B Ground Test .......................................................................................................................................... 31

S-17C Unloader Test Procedure .................................................................................................................... 32

S-17D Operation Test ...................................................................................................................................... 32

S-18 TESTING CRANKCASE HEATER ................................................................................................................... 33

S-21 CHECKING REVERSING VALVE AND SOLENOID ......................................................................................... 33

S-24 TESTING DEFROST CONTROL ..................................................................................................................... 33

S-25 TESTING DEFROST THERMOSTAT ............................................................................................................... 33

S-50 CHECKING HEATER LIMIT CONTROL(S) ...................................................................................................... 33

S-52 CHECKING HEATER ELEMENTS ................................................................................................................... 33

S-100 REFRIGERATION REPAIR PRACTICE .......................................................................................................... 34

S-101 LEAK TESTING (NITROGEN OR NITROGEN-TRACED) ............................................................................... 34

S-102 EVACUATION ................................................................................................................................................ 34

S-103 CHARGING ................................................................................................................................................... 35

S-104 CHECKING COMPRESSOR EFFICIENCY .................................................................................................... 36

S-105 THERMOSTATIC EXPANSION VALVE ......................................................................................................... 36

S-106 OVERFEEDING ............................................................................................................................................. 37

S-107 UNDERFEEDING ........................................................................................................................................... 37

S-108 SUPERHEAT ................................................................................................................................................. 37

S-109 CHECKING SUBCOOLING ........................................................................................................................... 38

S-110 CHECKING EXPANSION VALVE OPERATION ............................................................................................. 41

S-112 CHECKING RESTRICTED LIQUID LINE ....................................................................................................... 41

S-113 REFRIGERANT OVERCHARGE .................................................................................................................... 41

S-114 NON-CONDENSABLES ................................................................................................................................. 41

S-115 COMPRESSOR BURNOUT ........................................................................................................................... 41

S-122 REVERSING VALVE REPLACEMENT ........................................................................................................... 42

S-200 CHECKING EXTERNAL STATIC PRESSURE ............................................................................................... 43

S-201 CHECKING TEMPERATURE RISE ................................................................................................................ 43

WIRING DIAGRAMS ................................................................................................................ 44

OT18-60A OUTDOOR THERMOSTAT ..................................................................................................................... 44

OT18-60A OUTDOOR THERMOSTAT ..................................................................................................................... 45

HKR** HEAT KITS .................................................................................................................................................. 46

GPH13MED ECONOMIZER FOR GPH15**M4* ........................................................................................................ 47