AVPTC Service Manual

32
SERVICING TABLE OF CONTENTS
S-1 CHECKING VOLTAGE ................................................ 33
S-2 CHECKING WIRING................................................... 33
S-3E CTK0*** COMFORTNETTM THERMOSTAT .............. 33
S-4 CHECKING TRANSFORMER
AND CONTROL CIRCUIT ......................................46
S-6 CHECKING TIME DELAY RELAY ............................... 46
S-8A CHECKING UNITARY (UC) CONTROL
COMPRESSOR CONTACTOR/RELAY
CONTACTS ............................................................. 47
S-9 CHECKING HIGH AND LOW VOLTAGE
TO ECM MOTOR..........................................................47
S-10A COPELAND COMFORT ALERT™ .............................. 47
S-12 CHECKING HIGH PRESSURE CONTROL ...............61
S-13 CHECKING LOW PRESSURE CONTROL................ 61
S-14 CHECKING HIGH AND LOW PRESSURE SWITCH
VOLTAGE ................................................................. 61
S-15 CHECKING CAPACITOR ........................................... 61
S-15A RESISTANCE CHECK USING A DIGITAL
MULTI-METER .........................................................61
S-15B CAPACITANCE CHECK USING A DIGITAL
MULTI-METER (IN CAPACITANCE MODE)............. 62
S-16G CHECKING EMERSON ULTRATECH™
ECM MOTORS ........................................................ 62
S-16H ECM CFM ADJUSTMENTS AVPTC/MBVC ................. 65
S-17 CHECKING COMPRESSOR ..................................... 73
S-17A RESISTANCE TEST ................................................... 73
S-17B GROUND TEST ......................................................... 73
S-17C UNLOADER TEST PROCEDURE ............................ 74
S-17D OPERATION TEST .................................................... 74
S-18 TESTING CRANKCASE HEATER
(OPTIONAL ITEM) ...................................................75
S-21 CHECKING REVERSING VALVE
AND SOLENOID ..................................................... 75
S-24 TESTING DEFROST CONTROL ................................75
S-26 TESTING TEMPERATURE SENSORS
(COMFORTNET READY MODELS ONLY) .............76
S-40A AVPTC/MBVC ELECTRONIC
BLOWER/HEATER CONTROL ............................... 76
S-60 ELECTRIC HEATER (OPTIONAL ITEM) .................... 81
S-61A CHECKING HEATER LIMIT CONTROL(S) ................ 82
S-61B CHECKING HEATER FUSE LINK ..............................82
(OPTIONAL ELECTRIC HEATERS) .......................82
S-62 CHECKING HEATER ELEMENTS .............................82
S-100 REFRIGERATION REPAIR PRACTICE ..................... 82
S-101 LEAK TESTING
(NITROGEN OR NITROGEN-TRACED) ................ 83
S-102 EV
ACUATION ............................................................. 83
S-103 CHARGING ................................................................. 84
S-104 CHECKING COMPRESSOR EFFICIENCY................85
S-106 OVERFEEDING .......................................................... 85
S-107 UNDERFEEDING ....................................................... 85
S-108 SUPERHEAT ..............................................................85
S-109 CHECKING SUBCOOLING........................................ 85
S-110 CHECKING EXPANSION VALVE OPERATION .......... 86
S-112 CHECKING RESTRICTED LIQUID LINE .................. 86
S-113 OVERCHARGE OF REFRIGERANT ..........................86
S-114 NON-CONDENSABLES ............................................. 86
S-115 COMPRESSOR BURNOUT ....................................... 89
S-120 REFRIGERANT PIPING ............................................. 87
S-203 SINGLE PIECE AIR HANDLER EXTERNAL
STATIC PRESSURE ............................................ 90
S-203A TWO PIECE AIR HANDLER EXTERNAL
STATIC PRESSURE ............................................ 90