15A Resistance Check, 15B Capacitance Check | Goodmans SSX, GSZ, ASZ

SERVICING

The discharge check valve closes off high side pressure to the compressor after shut down allowing equalization through the scroll flanks. Equalization requires only about ½ second.

To prevent the compressor from short cycling, a Time Delay Relay (Cycle Protector) has been added to the low voltage circuit.

RELAY, START

A potential or voltage type relay is used to take the start capacitor out of the circuit once the motor comes up to speed. This type of relay is position sensitive. The normally closed contacts are wired in series with the start capacitor and the relay holding coil is wired parallel with the start winding. As the motor starts and comes up to speed, the increase in voltage across the start winding will energize the start relay holding coil and open the contacts to the start capacitor.

Two quick ways to test a capacitor are a resistance and a capacitance check.

START

CAPACITOR

RED 10

VIOLET 20

YELLOW 12

	START
	RELAY
	ORANGE 5
MOC MRHE NAF	T2	T1
	T2	T1
RUN	L2 L1

CAPACITOR

CONTACTOR

HARD START KIT WIRING

S-15A RESISTANCE CHECK

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. Discharge capacitor and remove wire leads.

WARNING

Discharge capacitor through a 20 to 30 OHM resistor before handling.

OHMMETER

CAPACITOR

TESTING CAPACITOR RESISTANCE

2.Set an ohmmeter on its highest ohm scale and connect the leads to the capacitor -

A.Good Condition - indicator swings to zero and slowly returns to infinity. (Start capacitor with bleed resistor will not return to infinity. It will still read the resistance of the resistor).

B.Shorted - indicator swings to zero and stops there - replace.

C.Open - no reading - replace. (Start capacitor would read resistor resistance.)

S-15B CAPACITANCE CHECK

Using a hookup as shown below, take the amperage and voltage readings and use them in the formula:

VOLTMETER

15 AMP

FUSE

AMMETER

CAPACITOR

TESTING CAPACITANCE

WARNING

Discharge capacitor through a 20 to 30 OHM resistor before handling.

Capacitance (MFD) = 2650 X Amperage

Voltage

42

Image 42

Goodmans SSX, GSZ, ASZ, ASX, DSZ, DSX, GSX, SSZ manual 15A Resistance Check, 15B Capacitance Check, RELAY, Start

Contents

Service Instructions Important Information Recognize Safety SYMBOLS, Words and LabelsEmail us at customerservice@goodmanmfg.com Fax us at 713 Fax us at 931 438 Safe Refrigerant Handling Product Identification Split System Heat Pumps R410A Model # Description Split System Air Conditioners R410A ASX130**1AA Single Piece Air Handlers AWUF****1AA MBR/MBE Air Handlers Product Identification 1824 3642 Accessories ASX13 DSX/SSX16 ASX18 ASZ13 DSZ/SSZ16 ASZ18 Expansion Valve Kits FSK01A Coil Accessories Electric Heat Kitapplications Aruf Electric Heat Kitapplications Aepf Product Design Condensing Unit Figure a Capacity Control Cooling System OperationHeating Cooling Cycle Defrost Cycle Heating Cycle Cooling Cycle System Operation AFE18-60A Control Board Description Troubleshooting Chart COOLING/HP Analysis Chart Servicing 61B 3A Thermostat and Wiring Checking WiringChecking THERMOSTAT, WIRING, and Anticipator Checking Voltage 3B Cooling Anticipator 3C Heating Anticipator Checking Transformer Control Circuit Checking Time Delay RelayTesting Coil Circuit Checking Cycle Protector Checking Contactor AND/OR Relays Testing Compressor ContactorSingle Phase Checking Contactor Contacts Copeland Comfort Alert Diagnostics Testing FAN Relay Diagnostics Table Checking LOW Pressure Control Checking Loss of Charge ProtectorChecking High Pressure Control Checking Capacitor 15A Resistance Check 15B Capacitance CheckRELAY, Start 16A Checking FAN and Blower Motor Windings PSC Motors 16B Checking FAN and Blower Motor ECM Motors Chart on Next Chart from Previous 16D ECM CFM Adjustments MBE / Aepf 16C Checking ECM Motor Windings CFM 16E Blower Performance Data 16F Checking GE X13TM MotorsGE X13TM Motor Connections 17A Resistance Test Testing Compressor WindingsChecking Compressor 17B Ground Test 17D Operation Test 17C Unloader Test ProcedureUnloader Test Procedure Compressor Ground Test Testing Defrost Thermostat Testing Crankcase Heater Optional ItemTesting Defrost Control Checking Reversing Valve and Solenoid Checking Heater Elements 40 MBR/AR*F Electronic Blower Time Delay RelayChecking Heater Limit Controls Sequence of Operation MBR/AR*F with Single Stage Heat Pumps Heating Operation 41 MBE/AEPF with GSX, SSX, ASX, DSX Defrost OperationMBE/AEPF with Single Stage GSX, ASX and SSX Condensers 41A MBE/AEPF with Single Stage GSZ, SSZ, & ASZ Heat Pumps Sequence of Operation MBE/AEPF with TWO Stage ASX & DSX Condensers MBE/AEPF with TWO Stage ASZ & DSZ Heat Pump Units Electric Heater Optional Item 61A Checking Heater Limit Controls 61B Checking Heater Fuse Link Optional Electric HeatersFormulas Evacuation Leak Testing Nitrogen or NITROGEN-TRACEDRefrigeration Repair Practice Brazing Materials Charging Evacuation Final Charge Adjustment Checking Compressor Efficiency 105B Thermostatic Expansion Valve TXV Valves Pressure vs. Temperature Chart 410A Required Liquid Line Temperature Superheat OverfeedingUnderfeeding Checking Subcooling Fixed Orifice Restrictor Devices 109A TWO Speed ApplicationChecking Expansion Valve Operation Subcooling Formula = Sat. Liquid Temp. Liquid Line NON-CONDENSABLES Checking Restricted Liquid LineOvercharge of Refrigerant Compressor Burnout Long Line SET Application R-410A Accessories for lines greater than 80 feetRefrigerant Piping Tube Sizing Installation Requirements AIR Handler External Static Initial System Charging Coil Static Pressure Drop Total External StaticStatic Pressure Drop Accessories Wiring Diagrams ALL Fuel System AFE18-60A Control Board 10kw 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