Goodmans GSX, GSZ, ASZ Checking Contactor AND/OR Relays, Checking Contactor Contacts, Single Phase

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SERVICING

S-7 CHECKING CONTACTOR AND/OR RELAYS

HIGH VOLTAGE!

Disconnect ALL power before servicing or installing. Multiple power sources may be present. Failure to do so may cause property damage, personal injury or death.

The compressor contactor and other relay holding coils are wired into the low or line voltage circuits. When the control circuit is energized, the coil pulls in the normally open contacts or opens the normally closed contacts. When the coil is de-energized, springs return the contacts to their normal position.

NOTE: Most single phase contactors break only one side of the line (L1), leaving 115 volts to ground present at most internal components.

1.Remove the leads from the holding coil.

2.Using an ohmmeter, test across the coil terminals.

If the coil does not test continuous, replace the relay or contactor.

T2 T1

CC

VOLT/OHM

METER

L2 L1

Ohmmeter for testing holding coil

Voltmeter for testing contacts

TESTING COMPRESSOR CONTACTOR

(Single Phase)

THREE PHASE

Using a voltmeter, test across terminals:

A.L1-L2, L1-L3, and L2-L3 - If voltage is present, proceed to B. If voltage is not present, check breaker or fuses on main power supply..

B.T1-T2, T1-T3, and T2-T3 - If voltage readings are not the same as in "A", replace contactor.

T3 T2 T1

S-8 CHECKING CONTACTOR CONTACTS

WARNING

VOLT/OHM

CC

Disconnect ALL power before servicing.

METER

L3

L2

L1

SINGLE PHASE:

1.Disconnect the wire leads from the terminal (T) side of the contactor.

2.With power ON, energize the contactor.

WARNING

Line Voltage now present.

3.Using a voltmeter, test across terminals.

A. L2 - T1 - No voltage indicates CC1 contacts open. If a no voltage reading is obtained - replace the contactor.

Ohmmeter for testing holding coil

Voltmeter for testing contacts

TESTING COMPRESSOR CONTACTOR

(Three-phase)

S-9 CHECKING FAN RELAY CONTACTS

HIGH VOLTAGE!

Disconnect ALL power before servicing or installing. Multiple power sources may be present. Failure to do so may cause property damage, personal injury or death.

1.Disconnect wires leads from terminals 2 and 4 of Fan Relay Cooling and 2 and 4, 5 and 6 of Fan Relay Heating.

2.Using an ohmmeter, test between 2 and 4 - should read open. Test between 5 and 6 - should read continuous.

3.With power ON, energize the relays.

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Contents Service Instructions Important Information Recognize Safety SYMBOLS, Words and LabelsEmail us at customerservice@goodmanmfg.com Fax us at 713 Fax us at 931 438Safe Refrigerant Handling Product Identification Split System Heat Pumps R410AModel # Description Split System Air Conditioners R410A ASX130**1AA Single Piece Air Handlers AWUF****1AA MBR/MBE Air Handlers Product Identification 1824 3642 Accessories ASX13DSX/SSX16 ASX18 ASZ13 DSZ/SSZ16 ASZ18 Expansion Valve Kits FSK01A Coil Accessories Electric Heat Kitapplications Aruf Electric Heat Kitapplications Aepf Product Design Condensing UnitFigure a Capacity Control Cooling System OperationHeating Cooling CycleDefrost Cycle Heating CycleCooling Cycle System Operation AFE18-60A Control Board DescriptionTroubleshooting Chart COOLING/HP Analysis ChartServicing 61B3A Thermostat and Wiring Checking WiringChecking THERMOSTAT, WIRING, and Anticipator Checking Voltage3B Cooling Anticipator 3C Heating AnticipatorChecking Transformer Control Circuit Checking Time Delay RelayTesting Coil Circuit Checking Cycle ProtectorChecking Contactor AND/OR Relays Testing Compressor ContactorSingle Phase Checking Contactor ContactsCopeland Comfort Alert Diagnostics Testing FAN RelayDiagnostics Table Checking LOW Pressure Control Checking Loss of Charge ProtectorChecking High Pressure Control Checking CapacitorRELAY, Start 15A Resistance Check15B Capacitance Check 16A Checking FAN and Blower Motor Windings PSC Motors 16B Checking FAN and Blower Motor ECM MotorsChart on Next Chart from Previous 16D ECM CFM Adjustments MBE / Aepf 16C Checking ECM Motor WindingsCFM GE X13TM Motor Connections 16E Blower Performance Data16F Checking GE X13TM Motors 17A Resistance Test Testing Compressor WindingsChecking Compressor 17B Ground Test17D Operation Test 17C Unloader Test ProcedureUnloader Test Procedure Compressor Ground TestTesting Defrost Thermostat Testing Crankcase Heater Optional ItemTesting Defrost Control Checking Reversing Valve and SolenoidChecking Heater Elements 40 MBR/AR*F Electronic Blower Time Delay RelayChecking Heater Limit Controls Sequence of OperationMBR/AR*F with Single Stage Heat Pumps Heating OperationMBE/AEPF with Single Stage GSX, ASX and SSX Condensers 41 MBE/AEPF with GSX, SSX, ASX, DSXDefrost Operation 41A MBE/AEPF with Single Stage GSZ, SSZ, & ASZ Heat Pumps Sequence of Operation MBE/AEPF with TWO Stage ASX & DSX CondensersMBE/AEPF with TWO Stage ASZ & DSZ Heat Pump Units Electric Heater Optional Item Formulas 61A Checking Heater Limit Controls61B Checking Heater Fuse Link Optional Electric Heaters Evacuation Leak Testing Nitrogen or NITROGEN-TRACEDRefrigeration Repair Practice Brazing MaterialsCharging EvacuationFinal Charge Adjustment Checking Compressor Efficiency105B Thermostatic Expansion Valve TXV ValvesPressure vs. Temperature Chart 410A Required Liquid Line Temperature Superheat OverfeedingUnderfeeding Checking SubcoolingFixed Orifice Restrictor Devices 109A TWO Speed ApplicationChecking Expansion Valve Operation Subcooling Formula = Sat. Liquid Temp. Liquid LineNON-CONDENSABLES Checking Restricted Liquid LineOvercharge of Refrigerant Compressor BurnoutLong Line SET Application R-410A Accessories for lines greater than 80 feetRefrigerant Piping Tube SizingInstallation Requirements AIR Handler External Static Initial System ChargingStatic Pressure Drop Coil Static Pressure DropTotal External Static Accessories Wiring Diagrams ALL Fuel System AFE18-60A Control Board10kw and Below, One Stage Electric Heat OT/EHR18-60 #2 GRD PLM PLF XFMR-R XFMR-C After Installing Optional Heat KIT, Mark AN X Provided Above HKR Heat Kit GRD PLM PLF