Goodman Mfg RT6100004R13 manual AFE18-60A Control Board, Description

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SYSTEM OPERATION

AFE18-60A CONTROL BOARD

DESCRIPTION

The AFE18 control is designed for use in heat pump applica- tions where the indoor coil is located above/downstream of a gas or fossil fuel furnace. It will operate with single and two stage heat pumps and single and two stage furnaces. The AFE18 control will turn the heat pump unit off when the furnace is turned on. An anti-short cycle feature is also incorporated which initiates a 3 minute timed off delay when the compressor goes off. On initial power up or loss and restoration of power, this 3 minute timed off delay will be initiated. The compressor won’t be allowed to restart until the 3 minute off delay has expired. Also included is a 5 second de-bounce feature on the “Y, E, W1 and O” thermostat inputs. These thermostat inputs must be present for 5 seconds before the AFE18 control will respond to it.

An optional outdoor thermostat, OT18-60A, can be used with the AFE18 to switch from heat pump operation to furnace operation below a specific ambient temperature setting, i.e. break even temperature during heating. When used in this manner, the “Y” heat demand is switched to the “W1” input to the furnace by the outdoor thermostat and the furnace is used to satisfy the first stage “Y” heat demand. On some

controls, if the outdoor thermostat fails closed in this position during the heating season, it will turn on the furnace during the cooling season on a “Y” cooling demand. In this situation, the furnace produces heat and increases the indoor temperature thereby never satisfying the cooling demand. The furnace will continue to operate and can only be stopped by switching the thermostat to the off position or removing power to the unit and then replacing the outdoor thermostat. When the AFE18 receives a “Y” and “O” input from the indoor thermostat, it recognizes this as a cooling demand in the cooling mode. If the outdoor thermo- stat is stuck in the closed position switching the “Y” demand to the “W1” furnace input during the cooling mode as described above, the AFE18 won’t allow the furnace to operate. The outdoor thermostat will have to be replaced to restore the unit to normal operation.

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.

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Contents Service Instructions Important Information Table of ContentsSafe Refrigerant Handling Split System Air Conditioners R-22 Product IdentificationSplit 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 ASC01 AccessoriesCPKF24 CPKF36 CPKF42 CPKF48 CPKF60 CPKF61 Expansion Valve Kits FSK01A Coil Accessories Condensing Unit Product DesignProduct Design Heating System OperationCooling Cycle System Operation Indoor Coil Outdoor Thermostatic Expansion Valve Description AFE18-60A Control BoardCOOLING/HP Analysis Chart Troubleshooting ChartServicing Table of Contents Servicing Checking Voltage Checking WiringChecking THERMOSTAT, WIRING, and Anticipator 3A Thermostat and Wiring3C Heating Anticipator 3B Cooling AnticipatorChecking Cycle Protector Checking Time Delay RelayTesting Coil Circuit Checking Transformer Control CircuitChecking Contactor Contacts Testing Compressor ContactorTesting FAN Relay Checking Contactor AND/OR RelaysApplies to ASC13 & ASH13 Copeland Comfort Alert DiagnosticsRed Trip Diagnostics TableChecking Capacitor Hard Start KIT WiringTesting Capacitor Resistance Checking Loss of Charge Protector16B Checking FAN and Blower Motor ECM Motors Testing Capacitance15B Capacitance Check 16A Checking FAN and Blower Motor Windings PSC Motors16C Checking ECM Motor Windings 16D ECM CFM AdjustmentsChart on Next Chart from Previous Itc h GE X13TM Motor Connections 16E Checking GE X13TM MotorsChecking Compressor 17A Resistance TestCompressor Ground Test Testing Compressor Windings17B Ground Test 17D Operation TestChecking Reversing Valve and Solenoid Testing Crankcase Heater Optional ItemTesting Defrost Control Testing Defrost ThermostatAR*F & MBR With Single Stage Heat Pumps 40 AR*F & MBR Electronic Blowers Time Delay RelaySequence of Operation AR*F & MBR With Single Stage Condensers41 AEP* & MBE with Single Stage CON Densers AEP* & MBE Electronic Blower Time Delay Relay41A AEP* & MBE with Single Stage Heat Pumps Electric Heater Optional Item 61A Checking Heater Limit Controls Temperature Rise F @ CFMRefrigeration Repair Practice Leak Testing Nitrogen or NITROGEN-TRACED61B Checking Heater Fuse Link Optional Electric Heaters Checking Heater ElementsEvacuation ChargingEvacuation An inaccurately charged system will cause future prob- lems Checking Compressor Efficiency105B Thermostatic Expansion Valve Thermostatic Expansion Valves OverfeedingUnderfeeding SuperheatChecking Expansion Valve Operation Checking SubcoolingCompressor Burnout Overcharge of RefrigerantChecking Restricted Liquid Line NON-CONDENSABLESRefrigerant Piping Suction Line Drier Clean-Up MethodInstallation Requirements System Charging Reversing Valve ReplacementStatic Pressure Drop AIR Handler External StaticCoil Static Pressure Drop Total External StaticAccessories 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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