SERVICING

S-2 CHECKING WIRING

WARNING

1.Check wiring visually for signs of overheating, damaged insulation and loose connections.

2.Use an ohmmeter to check continuity of any suspected open wires.

3.If any wires must be replaced, replace with comparable gauge and insulation thickness.

S-3 CHECKING THERMOSTAT, WIRING, AND ANTICIPATOR

S-3A THERMOSTAT AND WIRING

LINE VOLTAGE NOW PRESENT.

With power ON and thermostat calling for cooling.

1.Use a voltmeter to verify 24 volts present at thermostat wires C and R.

2.If no voltage present, check transformer and transformer wiring. If 24 volts present, proceed to step 3.

3.Use a voltmeter to check for 24 volts at thermostat wires C and Y.

4.No voltage indicates trouble in the thermostat, wiring or external transformer source.

5.Check the continuity of the thermostat and wiring. Repair or replace as necessary.

Indoor Blower Motor

With power ON:

LINE VOLTAGE NOW PRESENT.

1.Use a voltmeter to verify 24 volts present at thermostat wires C and R.

2.If no voltage present, check transformer and transformer wiring. If 24 volts present, proceed to step 3.

3.Set fan selector switch at thermostat to "ON" position.

4.With voltmeter, check for 24 volts at wires C and G.

5.No voltage, indicates the trouble is in the thermostat or wiring.

6.Check the continuity of the thermostat and wiring. Repair or replace as necessary.

S-3B COOLING ANTICIPATOR

The cooling anticipator is a small heater (resistor) in the ther- mostat. During the "off" cycle it heats the bimetal element helping the thermostat call for the next cooling cycle. This prevents the room temperature from rising too high before the system is restarted. A properly sized anticipator should main- tain room temperature within 1 1/2 to 2 degree range.

The anticipator is supplied in the thermostat and is not to be replaced. If the anticipator should fail for any reason, the ther- mostat must be changed.

S-3C HEATING ANTICIPATOR

The heating anticipator is a wire-wound adjustable heater, which is energized during the "ON" cycle to help prevent overheating of the conditioned space.

The anticipator is a part of the thermostat and if it should fail for any reason, the thermostat must be replaced. See the follow- ing for recommended heater anticipator setting.

To determine the proper setting, use an amp meter to measure the amperage on the "W" wire going to the thermostat.

Use an amprobe as shown below. Wrap 10 turns of thermostat wire around the stationary jaw of the amprobe and divide the reading by 10.

10 TURNS OF THERMOSTAT WIRE (From "W" on thermostat)

STATIONARY JAW

OF AMPROBE

READS 4 AMPS

CURRENT DRAW

WOULD BE .4 AMPS

Checking Heat Anticipator Amp Draw

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Goodman Mfg R-410A manual Checking Wiring, 3B Cooling Anticipator, 3C Heating Anticipator, Indoor Blower Motor
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R-410A specifications

Goodman Manufacturing, a well-respected name in the HVAC industry, has made significant advancements with their R-410A refrigerant technology. R-410A, a hydrofluorocarbon (HFC), has positioned itself as a superior alternative to the older R-22 refrigerant, which has been phased out due to its ozone-depleting properties. Goodman’s commitment to energy efficiency and environmental sustainability is well reflected in their use of R-410A in their air conditioning and heat pump systems.

One of the main features of Goodman’s R-410A systems is their exceptional energy efficiency. The R-410A refrigerant operates at a higher pressure than R-22, which allows for better heat transfer and improved cooling capacity. This results in reduced energy consumption and lower utility bills for consumers. Goodman’s air conditioning units designed for use with R-410A are often rated with high Seasonal Energy Efficiency Ratio (SEER) ratings, making them an eco-friendly choice for residential and commercial applications.

Another notable technology employed by Goodman is their commitment to reliable performance through advanced compressor designs. Goodman's scroll compressors are optimized for R-410A, ensuring quieter operation and reducing vibration levels. These compressors are known for their efficiency and longevity, making them a favorite among homeowners seeking dependable and durable climate control solutions.

Goodman's multi-stage cooling systems that utilize R-410A offer precise temperature control and enhanced comfort. By controlling the speed of the compressor, Goodman’s units can adjust output according to the heating or cooling demand, maximizing comfort while minimizing energy waste. This adaptability not only enhances indoor air quality but also contributes to a greener environment by using less energy.

Furthermore, Goodman incorporates high-tech diagnostic controls into their systems. These controls provide real-time performance data, allowing homeowners and technicians to monitor system status and troubleshoot issues more easily. By using R-410A combined with these innovative technologies, Goodman emphasizes reliability and user-friendly operation.

In conclusion, Goodman Manufacturing’s use of R-410A refrigerant reflects their dedication to efficiency, reliability, and environmental stewardship in HVAC solutions. The combination of advanced compressor technologies, high energy efficiency, and innovative controls solidifies Goodman’s reputation as a leader in the industry, offering homeowners and businesses the comfort and peace of mind they deserve.
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