Maytag FS4BG060K User Manual

Split System Air Conditioner
FS4BG & PSA4BG Series 20 SEER
The 20 SEER, iQ Drive
®
split system air conditioner operates as part of a larger system which can provide temperature,
air flow, and humidity control for a residence or other similarly sized building. This system includes this outdoor unit and a
compatible indoor unit, typically a gas furnace or an air handler with electric strip heat. Accessory equipment which may be
used with the system includes humidifiers, electric or electronic air cleaners, and U/V (ultraviolet) sterilizing lamps.
Refer to the System Operation section within this document for a description of how the air conditioner operates. In addition,
information for troubleshooting and diagnosing problems is included.
OTHER REFERENCE DOCUMENTS
• Installation instruction documents for indoor equipment
(furnace or air handler, optional humidifier, etc.)
• localwiringandbuildingcodes
• ApplicationGuidelineforRefrigerantLinesOver75Feet,
document 044B-0600
• Operation/congurationmanualfortwo-stagethermostat
(existing or newly installed)
DO NOT DESTROY. PLEASE READ CAREFULLY AND
KEEP IN A SAFE PLACE FOR FUTURE REFERENCE.
IMPORTANT
ATTENTION INSTALLERS:
It is your responsibility to know this product better
than your customer. This includes being able
to install the product according to strict safety
guidelines and instructing the customer on how
to operate and maintain the equipment for the
life of the product. Safety should always be the
deciding factor when installing this product and
using common sense plays an important role as
well. Pay attention to all safety warnings and any
other special notes highlighted in the manual.
Improper installation of the unit or failure to follow
safety warnings could result in serious injury,
death, or property damage.
These instructions are primarily intended to assist
qualified individuals experienced in the proper
installation of this appliance. Some local codes
require licensed installation/service personnel for
this type of equipment. Please read all instructions
carefully before starting the installation. Return
these instructions to the customer’s package for
future reference.
IMPORTANT SAFETY INFORMATION .......................2
PREPARATION ............................................................3
Slab Mounting ................................................................... 3
Roof Mounting .................................................................. 3
ELECTRICAL CONNECTIONS ...................................4
Electrical Power Wiring ..................................................... 4
Control Circuit Wiring ........................................................ 4
REFRIGERANT LINE CONNECTIONS ....................... 4
LineDesignandRouting .................................................. 4
Brazing .............................................................................. 5
System Evacuation ........................................................... 5
Refrigerant Charging ........................................................ 5
Charging Operation .......................................................... 6
Alternate Procedure for Charging the Air Conditioner
in Cooling Mode ................................................................ 6
SYSTEM OPERATION .................................................6
Thermostat ........................................................................ 6
BlowerFlowRates ............................................................ 6
Start-Up Sequence ........................................................... 6
Run Sequence .................................................................. 6
Diagnostic Display ............................................................ 7
Short Cycle Timer Override .............................................. 7
LowTemperatureLockouts .............................................. 7
Other Speed Overrides ..................................................... 7
Instrumentation ................................................................. 7
TROUBLESHOOTING .................................................8
InverterCircuitBoardLEDs .............................................. 8
No Control Board Display ................................................. 9
TroubleshootingIndividualFaultCodes(whenactive) ..... 9
MAINTENANCE ...........................................................10
FIGURES & CHARTS ..................................................11
Figure2.AirConditionerControlPanel(CoverRemoved) 11
Figure3.PowerWiringTerminals ...................................... 12
Figure4.LowVoltageCompartmentforControlWiring ..... 12
Figure5.ServiceValves .................................................... 12
Figure6.ChargingChart ................................................... 13
Figure7.InterfaceBoardinControlPanel ......................... 13
Figure8.WiringDiagram(2,3&4TonModels) ................ 14
Figure9.WiringDiagram(5TonModels) .......................... 15
Figure10.TemperatureSensorResistanceCharts ........... 16
INSTALLATION / PERFORMANCE CHECK LIST ......20
INSTALLATION INSTRUCTIONS

Maytag FS4BG060K Specifications

General

Brand	Maytag
Model	FS4BG060K
SEER Rating	Up to 16 SEER
HSPF Rating	Not Applicable
Refrigerant	R-410A
Voltage	208/230V
Phase	1
Cooling Capacity	60, 000 BTU
Operating Temperature Range (Cooling)	55°F to 125°F
Warranty	10-Year Limited Warranty on compressor and parts

Summary

Important Safety Information

Electrical Connections and Wiring

Electrical Power Wiring Installation

Control Circuit Wiring Setup

Refrigerant Line Installation and Charging

Brazing Procedures and Safety

Steps and safety precautions for brazing refrigerant line connections.

System Evacuation Process

Procedure for removing air and moisture from the refrigerant lines using a vacuum pump.

Refrigerant Charging Method

Methods for charging the system with the correct amount of refrigerant.

Troubleshooting and Diagnostics

Diagnostic Display Interpretation

Using the 2-character display on the interface board for status and faults.

Inverter Circuit Board LED Indicators

Individual Fault Code Resolution

Descriptions and troubleshooting steps for specific fault codes.

Maintenance and Safety

Electrical Safety Precautions for Service

Critical safety warnings to follow before performing any service.

Installation and Performance Checklist

Electrical System Verification

Refrigeration System Verification