Goodman Mfg RT6100004R13 manual Checking Loss of Charge Protector, Checking Capacitor

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SERVICING

S-11 CHECKING LOSS OF CHARGE PROTECTOR

(Heat Pump Models)

The loss of charge protector senses the pressure in the liquid line and will open its contacts on a drop in pressure. The low pressure control will automatically reset itself with a rise in pressure.

The low pressure control is designed to cut-out (open) at approximately 7 PSIG. It will automatically cut-in (close) at approximately 25 PSIG.

Test for continuity using a VOM and if not as above, replace the control.

S-15 CHECKING CAPACITOR

CAPACITOR, RUN

A run capacitor is wired across the auxiliary and main windings of a single phase permanent split capacitor motor. The capacitors primary function is to reduce the line current while greatly improving the torque characteristics of a motor. This is accomplished by using the 90° phase relationship between the capacitor current and voltage in conjunction with the motor windings, so that the motor will give two phase operation when connected to a single phase circuit. The capacitor also reduces the line current to the motor by improving the power factor.

The line side of this capacitor is marked with "COM" and is wired to the line side of the circuit.

CAPACITOR, START

SCROLL COMPRESSOR MODELS

In most cases hard start components are not required on Scroll compressor equipped units due to a non-replaceable check valve located in the discharge line of the compressor. However, in installations that encounter low lock rotor volt- age, a hard start kit can improve starting characteristics and reduce light dimming within the home. Only hard start kits approved by Amana® brand or Copeland should be used. "Kick Start" and/or "Super Boost" kits are not approved start assist devices.

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

 

RUN

L2 L1

CAPACITOR

CONTACTOR

HARD START KIT WIRING

S-15A RESISTANCE CHECK

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).

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Contents Service Instructions Table of Contents Important InformationSafe Refrigerant Handling Product Identification Split System Air Conditioners R-22Split System Air Conditioners R-22 Split System Heat Pumps R-22 Product Identification Single Piece Air Handlers Single Piece Air Handlers MBR/MBE Air Handlers 036 036 120 3642 1824 Accessories ASC01CPKF24 CPKF36 CPKF42 CPKF48 CPKF60 CPKF61 Expansion Valve Kits FSK01A Coil Accessories Product Design Condensing UnitProduct Design System Operation HeatingCooling Cycle System Operation Indoor Coil Outdoor Thermostatic Expansion Valve AFE18-60A Control Board DescriptionTroubleshooting Chart COOLING/HP Analysis ChartServicing Table of Contents Checking Voltage Checking Wiring Checking THERMOSTAT, WIRING, and Anticipator3A Thermostat and Wiring Servicing3B Cooling Anticipator 3C Heating AnticipatorChecking Time Delay Relay Testing Coil CircuitChecking Transformer Control Circuit Checking Cycle ProtectorTesting Compressor Contactor Testing FAN RelayChecking Contactor AND/OR Relays Checking Contactor ContactsCopeland Comfort Alert Diagnostics Applies to ASC13 & ASH13Diagnostics Table Red TripHard Start KIT Wiring Testing Capacitor ResistanceChecking Loss of Charge Protector Checking CapacitorTesting Capacitance 15B Capacitance Check16A Checking FAN and Blower Motor Windings PSC Motors 16B Checking FAN and Blower Motor ECM Motors16D ECM CFM Adjustments 16C Checking ECM Motor WindingsChart on Next Chart from Previous Itc h 16E Checking GE X13TM Motors Checking Compressor17A Resistance Test GE X13TM Motor ConnectionsTesting Compressor Windings 17B Ground Test17D Operation Test Compressor Ground TestTesting Crankcase Heater Optional Item Testing Defrost ControlTesting Defrost Thermostat Checking Reversing Valve and Solenoid40 AR*F & MBR Electronic Blowers Time Delay Relay Sequence of OperationAR*F & MBR With Single Stage Condensers AR*F & MBR With Single Stage Heat PumpsAEP* & MBE Electronic Blower Time Delay Relay 41 AEP* & MBE with Single Stage CON Densers41A AEP* & MBE with Single Stage Heat Pumps Electric Heater Optional Item Temperature Rise F @ CFM 61A Checking Heater Limit ControlsLeak Testing Nitrogen or NITROGEN-TRACED 61B Checking Heater Fuse Link Optional Electric HeatersChecking Heater Elements Refrigeration Repair PracticeEvacuation ChargingEvacuation Checking Compressor Efficiency An inaccurately charged system will cause future prob- lems105B Thermostatic Expansion Valve Overfeeding UnderfeedingSuperheat Thermostatic Expansion ValvesChecking Subcooling Checking Expansion Valve OperationOvercharge of Refrigerant Checking Restricted Liquid LineNON-CONDENSABLES Compressor BurnoutSuction Line Drier Clean-Up Method Refrigerant PipingInstallation Requirements Reversing Valve Replacement System ChargingAIR Handler External Static Coil Static Pressure DropTotal External Static Static Pressure DropAccessories Wiring Diagrams ALL Fuel System AFE18-60A Control BoardALL Fuel System Control Board AFE18-60A 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 Accessories Wiring Diagrams
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