Manuals / York / Household Appliance / Heat Pump

York YK M3 M3 G4 THRU YK S6 S4 J2, YK LB LB G4 THRU YK SE SC J4 Electrical Controls

Models: YK M3 M3 G4 THRU YK S6 S4 J2, YK LB LB G4 THRU YK SE SC J4 YK M3 M3 G4

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FORM 160.49-O2

eductor should be checked for any foreign particles that may be obstructing the jet.

ELECTRICAL CONTROLS

1.All electrical controls should be inspected for obvi- ous malfunctions.

2.It is important that the factory settings of controls (operation and safety) not be changed. If the set- tings are changed without YORK’s approval, the warranty will be jeopardized.

3.A 5-11 year life battery is part of the RTC-Real Time Clock. To replace, refer to page 29.

YORK INTERNATIONAL

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York YK M3 M3 G4 THRU YK S6 S4 J2, YK LB LB G4 THRU YK SE SC J4 operation manual Electrical Controls

FAQ

What should be checked on the eductor?

The eductor should be checked for any foreign particles that may be obstructing the jet.

What should be inspected on the electrical controls?

All electrical controls should be inspected for obvious malfunctions.

What will happen if the factory settings of control operation and safety are changed without YORK's approval?

The warranty will be jeopardized.

Contents

W ARNING MILLENNIUM TMFORM NO TABLE OF CONTENTSREFERENCE INSTRUCTIONS DESCRIPTIONR-134a NOMENCLATURER-22UNITS SYSTEM OPERATION DESCRIPTION See Fig SECTIONCAPACITY CONTROL FIG. 3 - MICROCOMPUTER CONTROL CENTER AND KEYPAD SECTION MICROCOMPUTER CONTROL CENTERINTRODUCTION DISPLAYING SYSTEM PARAMETERS CONTROL CENTEROPERATION To Display SSS MOTOR CURRENT / VOLTS To Display CHILLED LIQUID TEMPERATURESTo Display REFRIGERANT PRESSURE To Display OIL PRESSURESYSTEM SETPOINTS is displayedTo Display MOTOR CURRENT To Display OPERATING HOURS and STARTS COUNTERPage DISPLAYING SYSTEM SETPOINTS Solid State Starter Applications Only To Display REMOTE RESET TEMP RANGE SetpointPROGRAMMING SYSTEM SETPOINTS PROGRAMMING1.Press ACCESS CODE key THE MICROCOMPUTER CONTROL CENTERSolid State Starter, refer to Fig Electro-MechanicalStarter, refer to FigTo Enter PULL DOWN DEMAND Setpoint Refer to Fig 3.Press and release ADVANCE DAY/SCROLL key.The following prompt message is displayed To Enter REMOTE/ RESET TEMP RANGE Setpoint Refer to Fig PRE-ROTATIONVANES KEYS SERVICE KEYSOTHER SERVICE KEYS 1.Press ACCESS CODE key OPERATING MODESDISPLAY MESSAGES COMPRESSOR SWITCHTherefore SYSTEM SHUTDOWN MESSAGES when Control Center is in REMOTE mode Phase rotation/loss Solid State Starter applications only FUNCTIONJUMPER POSITION Solid State Starter applications onlySolid State Starter applications only MON XX XX AM - DC UNDERVOLTAGE MON XX XX AM - AUX SAFETY SHUTDOWNMON XX XX AM - HIGH SPEED DRAIN TEMP MON XX XX AM - OPEN DRAIN TEMP THERMOCOUPLEand remains energized as long as the fused disconnect switch to the starter orSTART-UPPROCEDURE SECTIONCHILLER OPERATION Condenser Water Temperature Control SYSTEM STARTING & SHUTDOWN SEQUENCEOPERATOR INITIATED OPERATING LOG SHEET CHECKING OPERATIONQuarterly OPERATING INSPECTIONS - See SectionDaily WeeklyCYCLING SHUTDOWNS NEED FOR MAINTENANCE OR SERVICENORMAL AND SAFETY SYSTEM SHUTDOWNS SAFETY SHUTDOWNSSTART-UPAFTER PROLONGED SHUTDOWN PROLONGED SHUTDOWN27385A SECTIONSYSTEM COMPONENTS DESCRIPTION FRONT VIEWCOMPRESSOR LUBRICATION SYSTEM See Fig GENERALCOMPRESSOR CAPACITY CONTROLLD00951 REFRIGERANT FLOW CONTROL OIL HEATERMOTOR DRIVELINE HEAT EXCHANGERSACTUAL LEVEL = XXX% LEVEL SETP = XXX% MICROCOMPUTER CONTROL CENTER See SectionSOLID STATE STARTER Optional VARIABLE SPEED DRIVE OptionalOIL RETURN SYSTEM OPERATIONAL MAINTENANCESECTION THE OIL CHARGE OIL CHARGING PROCEDURESECTION TROUBLESHOOTINGYORK INTERNATIONAL YORK INTERNATIONAL RESULTS 1. SYMPTOM ABNORMALLY HIGH DISCHARGE PRESSURE2. SYMPTOM ABNORMALLY LOW SUCTION PRESSURE 3. SYMPTOM HIGH COOLER PRESSUREPOSSIBLE CAUSE 7. SYMPTOM OIL PUMP VIBRATES OR IS NOISY11. SYMPTOM REDUCED OIL PUMP CAPACITY RESULTSCHECKING SYSTEM FOR LEAKS LEAK TESTING DURING OPERATIONSECTION RENEWAL PARTSVACUUM TESTING VACUUM DEHYDRATION DURING UNIT SHUTDOWN REFRIGERANT CHARGINGCHECKING THE REFRIGERANT CHARGE MEGGING THE MOTOR HANDLING REFRIGERANT FOR DISMANTLING AND REPAIRSLD00476 Open MotorsGENERAL CLEANING COOLER AND CONDENSER TUBESTUBE CLEANING PROCEDURES COMMERCIAL ACID CLEANINGTESTING FOR COOLER AND CONDENSER TUBE LEAKS ELECTRICAL CONTROLS COMPRESSORCOMPRESSOR MOTOR PRESSURE TESTINGSECTION COMPRESSORELECTRICAL CONTROLS Form 160.49-O21296 P.O. Box 1592, York, Pennsylvania USACopyright by York International Corporation ALL RIGHTS RESERVED