IMPORTANT INFORMATION
2
๎ฌ๎ฐ๎ณ๎ฒ๎ต๎ท๎ค๎ฑ๎ท๎๎ฑ๎ฒ๎ท๎ฌ๎ฆ๎จ๎ถ๎๎ฉ๎ฒ๎ต๎๎ฆ๎ฒ๎ฑ๎ถ๎ธ๎ฐ๎จ๎ต๎ถ๎
๎ค๎ฑ๎ง๎๎ถ๎จ๎ต๎น๎ฌ๎ฆ๎จ๎ต๎ถ
๎ต๎จ๎ฆ๎ฒ๎ช๎ฑ๎ฌ๎ฝ๎จ๎๎ถ๎ค๎ฉ๎จ๎ท๎ผ๎๎ถ๎ผ๎ฐ๎ฅ๎ฒ๎ฏ๎ถ๎๎๎บ๎ฒ๎ต๎ง๎ถ๎๎ค๎ฑ๎ง๎
๎ฏ๎ค๎ฅ๎จ๎ฏ๎ถ
๎บ๎ค๎ต๎ฑ๎ฌ๎ฑ๎ช
๎ท๎ซ๎ฌ๎ถ๎๎ธ๎ฑ๎ฌ๎ท๎๎ถ๎ซ๎ฒ๎ธ๎ฏ๎ง๎๎ฑ๎ฒ๎ท๎๎ฅ๎จ๎๎ฆ๎ฒ๎ฑ๎ฑ๎จ๎ฆ๎ท๎จ๎ง๎๎ท๎ฒ๎๎๎ฒ๎ต๎๎ธ๎ถ๎จ๎ง๎๎ฌ๎ฑ๎
๎ฆ๎ฒ๎ฑ๎ญ๎ธ๎ฑ๎ฆ๎ท๎ฌ๎ฒ๎ฑ๎๎บ๎ฌ๎ท๎ซ๎๎๎ค๎ฑ๎ผ๎๎ง๎จ๎น๎ฌ๎ฆ๎จ๎ถ๎๎ท๎ซ๎ค๎ท๎๎ค๎ต๎จ๎๎ฑ๎ฒ๎ท๎๎ง๎จ๎ถ๎ฌ๎ช๎ฑ๎
๎ฆ๎จ๎ต๎ท๎ฌ๎ฉ๎ฌ๎จ๎ง๎๎ฉ๎ฒ๎ต๎๎ธ๎ถ๎จ๎๎บ๎ฌ๎ท๎ซ๎๎ท๎ซ๎ฌ๎ถ๎๎ธ๎ฑ๎ฌ๎ท๎๎ฒ๎ต๎๎ซ๎ค๎น๎จ๎๎ฑ๎ฒ๎ท๎๎ฅ๎จ๎จ๎ฑ๎
๎ท๎จ๎ถ๎ท๎จ๎ง๎๎ค๎ฑ๎ง๎๎ค๎ณ๎ณ๎ต๎ฒ๎น๎จ๎ง๎๎ฅ๎ผ๎๎ท๎ซ๎จ๎๎ฐ๎ค๎ฑ๎ธ๎ฉ๎ค๎ฆ๎ท๎ธ๎ต๎จ๎ต๎๎๎๎ถ๎จ๎ต๎ฌ๎ฒ๎ธ๎ถ๎
๎ณ๎ต๎ฒ๎ณ๎จ๎ต๎ท๎ผ๎๎ง๎ค๎ฐ๎ค๎ช๎จ๎๎ฒ๎ต๎๎ณ๎จ๎ต๎ถ๎ฒ๎ฑ๎ค๎ฏ๎๎ฌ๎ฑ๎ญ๎ธ๎ต๎ผ๎๎๎ต๎จ๎ง๎ธ๎ฆ๎จ๎ง๎๎ธ๎ฑ๎ฌ๎ท๎
๎ณ๎จ๎ต๎ฉ๎ฒ๎ต๎ฐ๎ค๎ฑ๎ฆ๎จ๎๎ค๎ฑ๎ง๎๎ฒ๎ต๎๎ซ๎ค๎ฝ๎ค๎ต๎ง๎ฒ๎ธ๎ถ๎๎ฆ๎ฒ๎ฑ๎ง๎ฌ๎ท๎ฌ๎ฒ๎ฑ๎ถ๎๎ฐ๎ค๎ผ๎๎ต๎จ๎ถ๎ธ๎ฏ๎ท๎
๎ฉ๎ต๎ฒ๎ฐ๎๎ท๎ซ๎จ๎๎ธ๎ถ๎จ๎๎ฒ๎ฉ๎๎ง๎จ๎น๎ฌ๎ฆ๎จ๎ถ๎๎ท๎ซ๎ค๎ท๎๎ซ๎ค๎น๎จ๎๎ฑ๎ฒ๎ท๎๎ฅ๎จ๎จ๎ฑ๎๎ค๎ณ๎ณ๎ต๎ฒ๎น๎จ๎ง๎
๎ฒ๎ต๎๎ฆ๎จ๎ต๎ท๎ฌ๎ฉ๎ฌ๎จ๎ง๎๎ฅ๎ผ๎๎ท๎ซ๎จ๎๎ฐ๎ค๎ฑ๎ธ๎ฉ๎ค๎ฆ๎ท๎ธ๎ต๎จ๎ต๎
๎บ๎ค๎ต๎ฑ๎ฌ๎ฑ๎ช
๎ท๎ฒ๎๎ณ๎ต๎จ๎น๎จ๎ฑ๎ท๎๎ท๎ซ๎จ๎๎ต๎ฌ๎ถ๎ฎ๎๎ฒ๎ฉ๎๎ณ๎ต๎ฒ๎ณ๎จ๎ต๎ท๎ผ๎๎ง๎ค๎ฐ๎ค๎ช๎จ๎๎๎ณ๎จ๎ต๎ถ๎ฒ๎ฑ๎ค๎ฏ๎
๎ฌ๎ฑ๎ญ๎ธ๎ต๎ผ๎๎๎ฒ๎ต๎๎ง๎จ๎ค๎ท๎ซ๎๎๎ง๎ฒ๎๎ฑ๎ฒ๎ท๎๎ถ๎ท๎ฒ๎ต๎จ๎๎ฆ๎ฒ๎ฐ๎ฅ๎ธ๎ถ๎ท๎ฌ๎ฅ๎ฏ๎จ๎๎ฐ๎ค๎ท๎จ๎ต๎ฌ๎ค๎ฏ๎ถ๎
๎ฒ๎ต๎๎ธ๎ถ๎จ๎๎ช๎ค๎ถ๎ฒ๎ฏ๎ฌ๎ฑ๎จ๎๎ฒ๎ต๎๎ฒ๎ท๎ซ๎จ๎ต๎๎ฉ๎ฏ๎ค๎ฐ๎ฐ๎ค๎ฅ๎ฏ๎จ๎๎ฏ๎ฌ๎ด๎ธ๎ฌ๎ง๎ถ๎๎ฒ๎ต๎
๎น๎ค๎ณ๎ฒ๎ต๎ถ๎๎ฌ๎ฑ๎๎ท๎ซ๎จ๎๎น๎ฌ๎ฆ๎ฌ๎ฑ๎ฌ๎ท๎ผ๎๎ฒ๎ฉ๎๎ท๎ซ๎ฌ๎ถ๎๎ค๎ณ๎ณ๎ฏ๎ฌ๎ค๎ฑ๎ฆ๎จ๎
๎บ๎ค๎ต๎ฑ๎ฌ๎ฑ๎ช
๎ซ๎ฌ๎ช๎ซ๎๎น๎ฒ๎ฏ๎ท๎ค๎ช๎จ
๎ง๎ฌ๎ถ๎ฆ๎ฒ๎ฑ๎ฑ๎จ๎ฆ๎ท๎๎ค๎ฏ๎ฏ๎๎ณ๎ฒ๎บ๎จ๎ต๎๎ฅ๎จ๎ฉ๎ฒ๎ต๎จ๎๎ถ๎จ๎ต๎น๎ฌ๎ฆ๎ฌ๎ฑ๎ช๎
๎ฒ๎ต๎๎ฌ๎ฑ๎ถ๎ท๎ค๎ฏ๎ฏ๎ฌ๎ฑ๎ช๎๎ท๎ซ๎ฌ๎ถ๎๎ธ๎ฑ๎ฌ๎ท๎๎๎๎ฐ๎ธ๎ฏ๎ท๎ฌ๎ณ๎ฏ๎จ๎๎ณ๎ฒ๎บ๎จ๎ต๎
๎ถ๎ฒ๎ธ๎ต๎ฆ๎จ๎ถ๎๎ฐ๎ค๎ผ๎๎ฅ๎จ๎๎ณ๎ต๎จ๎ถ๎จ๎ฑ๎ท๎๎๎๎ฉ๎ค๎ฌ๎ฏ๎ธ๎ต๎จ๎๎ท๎ฒ๎๎ง๎ฒ๎๎ถ๎ฒ๎
๎ฐ๎ค๎ผ๎๎ฆ๎ค๎ธ๎ถ๎จ๎๎ณ๎ต๎ฒ๎ณ๎จ๎ต๎ท๎ผ๎๎ง๎ค๎ฐ๎ค๎ช๎จ๎๎๎ณ๎จ๎ต๎ถ๎ฒ๎ฑ๎ค๎ฏ๎
๎ฌ๎ฑ๎ญ๎ธ๎ต๎ผ๎๎ฒ๎ต๎๎ง๎จ๎ค๎ท๎ซ๎
OUTSIDE THE U.S., ๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎.
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UNLOADER TEST PROCEDURE WITH COMFORT
ALERTโข UNITARY (UC) CONTROL DIAGNOSTICS 40
LOCKED ROTOR TEST ............................................. 40
OPERATION TEST ................................................... 41
TESTING CRANKCASE HEATER (OPTIONAL ITEM) 41
CHECKING REVERSING VALVE AND SOLENOID ... 42
TESTING DEFROST CONTROL ................................ 42
TESTING TEMPERATURE SENSORS
(COMMUNICATING READY MODELS ONLY) .......... 42
AVPTC/MBVC HEATER CONTROL ............................ 43
ELECTRIC HEATER (OPTIONAL ITEM) ................... 44
CHECKING HEATER LIMIT CONTROL(S) ................ 47
CHECKING HEATER FUSE LINK
(OPTIONAL ELECTRIC HEATERS) ............................ 47
CHECKING HEATER ELEMENTS ............................. 47
REFRIGERATION REPAIR PRACTICE .................... 47
LEAK TESTING
(NITROGEN OR NITROGEN-TRACED) .................... 48
SYSTEM EVACUATION ............................................. 48
DEEP VACUUM METHOD .......................................... 48
TRIPLE EVACUATION METHOD ................................ 49
CHARGING ............................................................... 49
FINAL CHARGE ADJUSTMENT ................................. 50
CHECKING COMPRESSOR EFFICIENCY ............... 51
OVERFEEDING ......................................................... 51
UNDERFEEDING ........................................................ 51
SUPERHEAT .............................................................. 51
CHEACKING SUPERHEAT ........................................ 51
CHECKING SUBCOOLING ......................................... 52
CHECKING EXPANSION VALVE OPERATION .......... 52
CHECKING RESTRICTED LIQUID LINE ................... 56
OVERCHARGE OF REFRIGERANT .......................... 56
NON-CONDENSABLES .............................................. 56
COMPRESSOR BURNOUT ........................................ 56
REFRIGERANT PIPING .............................................. 57
SINGLE PIECE AIR HANDLER EXTERNAL STATIC
PRESSURE ................................................................ 57
TWO PIECE AIR HANDLER EXTERNAL STATIC
PRESSURE ................................................................ 58
MAINTENANCE .......................................................... 58
WIRING DIAGRAM ......................................................... 85