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Bryant R-22 service manual Heat Pump Troubleshooting–Heatingcycle, 50

Models: R-22

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HEAT PUMP

HEAT PUMP

TROUBLESHOOTING–HEATING CYCLE

NO HEATING OR

INSUFFICIENT

HEATING

COMPRESSOR WILL NOT RUN

COMPRESSOR

RUNS BUT

CYCLES ON

INTERNAL

OVERLOAD

COMPRESSOR

RUNS

INSUFFICIENT

HEATING

CONTACT

OPEN

DEFECTIVE LOW-

VOLTAGE

TRANSFORMER

REMOTE

CONTROL

CENTER

DEFECTIVE

CONTACTOR

COIL OPEN OR

SHORTED

OPEN INDOOR THERMOSTAT

LIQUID-LINE PRESSURE SWITCH OPEN

LOSS OF

CHARGE

CONTACTOR

CLOSED

COMPRESSOR POWER SUPPLY

LOOSE LEADS AT

COMPRESSOR

FAULTY START

GEAR (1-PH)

COMPRESSOR

STUCK

COMPRESSOR

INTERNAL

OVERLOAD

OPEN

OPEN SHORTED OR GROUNDED COMPRESSOR WINDINGS

DIRTY FILTERS

OR INDOOR

COIL

INDOOR FAN STOPPED OR CYCLING ON OVERLOAD

DAMAGED

REVERSING

VALVE

RESTRICTION IN DISCHARGE LINE

OVERCHARGE

OR NON-

CONDENSABLES

IN SYSTEM

LOW

REFRIGERANT

CHARGE

LINE VOLTAGE TOO HIGH OR LOW

DEFECTIVE FAN

MOTOR

CAPACITOR

LOOSE LEADS

AT

FAN MOTOR

FAN MOTOR

BURNED

OUT

LOW SUCTION

LOW HEAD



	OUTDOOR FAN				OUTDOOR FAN
	STOPPED				RUNNING



	LOOSE LEADS				REVERSING
	AT OUTDOOR				REVERSING
	AT OUTDOOR				VALVE STUCK
	FAN MOTOR				VALVE STUCK
	FAN MOTOR


	INTERNAL FAN				RESTRICTED
	MOTOR KLIXON				RESTRICTED
	MOTOR KLIXON				LIQUID LINE
	OPEN				LIQUID LINE
	OPEN


	FAN MOTOR				PISTON
	FAN MOTOR				RESTRICTED OR
	BURNED OUT				RESTRICTED OR
	BURNED OUT				IS CLOGGED
					IS CLOGGED


	DEFROST RELAY
	N.C. CONTACTS				UNDER-
	OPEN ON				CHARGED
	CIRCUIT BOARD

					OUTDOOR COIL
					DIRTY

STRIP HEATERS NOT OPERATING

OUTDOOR

THERMOSTAT

DEFECTIVE

ODT SETTING

TOO LOW

CAP TUBE

PINCHED OR

BULB NOT

SENSING TRUE

ODT

STRIP HEATER

RELAY OR

CONTACTOR

DEFECTIVE

OPENING IN

POWER CIRCUIT

TO HEATER

ELEMENTS

BROKEN FUSE

LINK

	OPEN CONTROL			DEFECTIVE RUN
	CIRCUIT			CAPACITOR

DEFECTIVE RUN

CAPACITOR

(1-PH)

COMPRESSOR

BEARINGS

HIGH-LOAD

CONDITION

REVERSING

VALVE JAMMED IN MIDPOSITION

HIGH

SUPERHEAT

						STRAINER
						RESTRICTED


						OUTDOOR COIL
						HEAVILY
						FROSTED



	FAN MOTOR					DEFECTIVE
	CONTACTS					DEFECTIVE
	WELDED CLOSED					DEFROST
	WELDED CLOSED					DEFROST
	IN DEFROST					THERMOSTAT
	RELAY
	RELAY

						DEFROST
	REVERSING					DEFROST
	REVERSING					THERMOSTAT IN
	VALVE DID NOT					POOR PHYSICAL
	VALVE DID NOT					POOR PHYSICAL
	SHIFT					CONTACT WITH
						TUBE
						TUBE

	UNIT NOT					DEFECTIVE
	PROPERLY					DEFECTIVE
	PROPERLY					CIRCUIT BOARD
	CHARGED					CIRCUIT BOARD
	CHARGED


						BAD ELECTRICAL
						CONNECTION
						ANYWHERE IN
						ANYWHERE IN
						DEFROST
						CIRCUIT

BROKEN

HEATER

ELEMENT

OPEN (KLIXON)

OVER

TEMPERATURE THERMOSTAT

DEFECTIVE

ROOM

THERMOSTAT (2ND STAGE)

A90206

Fig. 54—Heat-Pump Troubleshooting Chart — Heating Cycle

—50—

Image 50

Bryant R-22 service manual Heat Pump Troubleshooting–Heatingcycle, 50

Contents

Application Guide and Service Manual TABLE OF CONTENTSSAFETY CONSIDERATIONS ACCESSORY DESCRIPTIONS INSTALLATION GUIDELINEII. ADD-ONREPLACEMENT RETROFIT VIII. LOW-AMBIENTPRESSURE SWITCHX. COASTAL FILTER II. INTERCONNECTING TUBING SIZINGIX. WIND BAFFLE XI. SUPPORT FEETBAFFLE BAFFLE ASSEMBLYSUPPORT Fig. 1—WindBaffle Construction for Reliant UnitsSUPPORT Fig. 2—WindBaffle Construction for Cube UnitsBAFFLE ASSEMBLY TABLE 3—WINDBAFFLE DIMENSIONS FOR CUBE UNITS IN III. METERING DEVICE SIZINGTABLE 6—CALCULATIONOF INDOOR PISTON NO Fig. 3—TubeBend LossesTABLE 5—FITTINGLOSSES IN EQUIVALENT FT TABLE 7—CALCULATIONOF OUTDOOR PISTON NOV. CHARGING INFORMATION TABLE 8—COMMONPISTON SIZESTABLE 9—LIQUID-LINESOLENOID KIT PART NUMBERS VI. 2–SPEEDAPPLICATIONSII. SERIAL NUMBER IDENTIFICATION Positions 6 through 10—SerialNumberI. REMOVE TOP COVER—BEFORE1/1/92 II. REMOVE FAN-MOTOR ASSEMBLY—BEFORE1/1/92CABINET III. INFORMATION PLATE—RELIANTPRODUCTSVI. REMOVE FAN-MOTOR ASSEMBLY—AFTER1/1/92 ELECTRICAL I. ALUMINUM WIREFig. 8—BasicCabinet Designs Fig. 9—InformationPlate II. CONTACTORSFig. 13—PTCDevices Fig. 11—Contactor III. CAPACITORSFig. 12—Capacitors Fig. 14—CapacitanceBoosting IV. CYCLE PROTECTORV. CRANKCASE HEATER VI. TIME-DELAYRELAYFig. 15—Cycle-ProtectorDevice VII. PRESSURE SWITCHES Fig. 17—Cycle-ProtectorWiringFig. 18—Wiringfor Single-PoleContactor Fig. 16—Cycle-ProtectorSequenceVIII. DEFROST THERMOSTATS IX. DEFROST-CONTROLBOARDFig. 19—JumperDFT and R Terminals TABLE 10—DEFROSTCONTROL SPEED-UPTIMING SE Fig. 20—InsertingJumper WireFig. 21—CheckingBetween C and W2 QUENCE FOR CES0110063/CES0130024X. FAN MOTORS TABLE 11—DEFROSTTIMER SETTINGSXI. SERVICE ALARM CONTROL BOARD OF2 CESO130076–00 Fig. 24—FanPosition TABLE 12—FANPOSITIONFig. 23—DefrostThermostat Location —23—Fig. 25—ServiceAlarm Wiring Connections XIII. COMPRESSOR PLUGI. MECHANICAL FAILURES Fig. 27—CompressorPlug XIV. LOW-VOLTAGETERMINALSRECIPROCATING COMPRESSOR Fig. 28—IdentifyingInternal Connections II. ELECTRICAL FAILURESIII. SYSTEM CLEANUP AFTER BURNOUT IV. COMPRESSOR REMOVAL AND REPLACEMENTTABLE 13—COMPRESSOROIL RECHARGE COPELAND SCROLL COMPRESSOR I. FEATURESII. TROUBLESHOOTING Fig. 29—ScrollCompressor Refrigerant FlowIV. SCROLL COMPRESSOR, 3–PHASEMONITOR MILLENNIUM SCROLL COMPRESSOR I. FEATURESIII. TROUBLESHOOTING Fig. 30—Locationof Discharge Thermostat—30— Fig. 31—CES0130075 3–PhaseMonitor BoardFig. 32—CESO130075 3–PhaseMonitor Wiring Diagram Fig. 33—Two-SpeedControl Board TABLE 14—AMBIENTTEMPERATURE FOR HIGH- ANDLOW-SPEEDOPERATION Fig. 34—SpeedupTerminalsTABLE 15—FUNCTIONLIGHT CODE AND DISPLAY LOCATION Fig. 35—TypicalCooling Balance PointsTABLE 17—FACTORYDEFAULTS Fig. 36—Low-VoltageControl WiringIII. FACTORY DEFAULTS TABLE 16—COMPRESSORPTC RANGESVI. TROUBLESHOOTING Fig. 37—Header-PinHousingFig. 39—ResistanceValues Versus Temperature THERMISTOR CURVEREFRIGERATION SYSTEM I. REFRIGERATION CYCLE II. LEAK DETECTION—36— Fig. 40—Low-SpeedWindingsFig. 41—High-SpeedWindings Fig. 43—LeakDetector III. BRAZING Fig. 42—HeatPump Refrigerant-FlowDiagramsTABLE 19—24VPIN CONNECTION TROUBLESHOOTING Fig. 44—ServiceValves IV. SERVICE VALVESFig. 45—Check-Flo-RaterComponents VI. REVERSING VALVEMode, Solenoid Energized Fig. 46—ReversingValveFig. 47—ReversingValve Cooling Mode or Defrost VII. THERMOSTATIC-EXPANSIONVALVES TXVVIII. THERMOSTATIC-EXPANSIONVALVE BI-FLOWTXV Fig. 48—ReversingValve Heating Mode, Solenoid DeEnergized IX. COIL REMOVAL—42— Fig. 49—TXVin Cooling ModeFig. 50—TXVin Heating Mode Fig. 51—Accumulator XI. ACCUMULATORXII. CONTAMINANT REMOVAL XIII. SYSTEM CHARGINGTABLE 22-REQUIREDVAPOR TEMPERATURE F TABLE 21—SUPERHEATCHARGING TABLECARE AND MAINTENANCE TABLE 24—REQUIRED LIQUID-LINETEMPERATURE —47— Special maintenance requirements are as followsDesert and Seacoast Locations AIR CONDITIONER TROUBLESHOOTING CHART Fig. 52—Air-ConditionerTroubleshooting ChartHEAT PUMP TROUBLESHOOTING–COOLINGCYCLE —49—HEAT PUMP TROUBLESHOOTING–HEATINGCYCLE —50——51— sm01,025 —52—Printed in U.S.A Catalog No.