BLOWER OFF DELAY

 

ADJUSTMENT SWITCH

 

G

24V THERMOSTAT

 

TERMINALS

 

R

 

 

 

Y

 

TEST/TWIN

W

HUMIDIFIER TERMINAL

Com

 

24V

(24-VAC 0.5 AMP MAX)

 

HUM

LED OPERATION &

 

 

 

 

STATUS LIGHT

 

 

HARNESS CONNECTOR

SEC-1

24V TRANSFORMER SEC-2

 

3-AMP FUSE

SPARE 1

COOL

BLOWER SPEED

HEAT

 

SELECTION TERMINALS

 

SPARE 2

 

EAC 1 (BLACK)

 

EAC-ELECTRONIC AIR CLEANER

 

TERMINALS (115-VAC 1.5 AMP MAX)

115-VAC (L1)

EAC 2 (WHITE)

POWER

115-VAC (L2) NEUTRAL

SUPPLY

CONNECTION

 

HOT SURFACE

INDUCER MOTOR

IGNITOR

CONNECTOR

CONNECTOR

 

A93052

Fig. 12ÐControl Center

1.Leave 115-v power to furnace turned on.

2.Remove main furnace door.

3.Look into blower access panel sight glass for current LED status.

NOTE: Leave blower access panel installed to maintain power to control center to view current LED status.

4.BRIEFLY remove either wire from the main limit switch until the LED goes out, then reconnect it.

Make sure limit switch wire does not contact any metallic component such as the gas valve. If wire is shorted, 3-amp fuse on control center will blow.

NOTE: If wire to main limit is disconnected longer than 4 sec, the control senses limit circuit is open. Main blower will start and retrieval request will be ignored.

5.When above items have been completed, the component test sequence will occur as described in the Component Test Sequence section above.

NOTE: Be sure to record the status code which is flashed 4 times at start of component test for further troubleshooting.

6.After component test is completed and LED is ON continu- ously indicating the furnace is ready to operate when a signal from the thermostat is received, replace main furnace door.

INITIATING COMPONENT TEST AND RETRIEVING STA- TUS CODE BY JUMPERING CONTROL TEST TERMINAL

1.Remove main furnace door.

2.Remove blower access panel.

3.Manually close blower access panel door switch. Use a piece of tape to hold switch closed.

Blower access panel door switch opens 115-v power to control center. No component operation can occur. Caution must be taken when manually closing this switch for service purposes. Failure to follow this warning could result in electrical shock, personal injury, or death.

4.BRIEFLY short (jumper) TEST, 1/4-in. quick-connect termi- nal on control center (adjacent to the LED diagnostic light) and the COM terminal on thermostat connection block. (See Fig. 12.)

NOTE: If TEST to COM terminals are jumpered longer than 2 sec, LED will flash rapidly, and retrieval request will be ignored.

5.When above items have been completed, the component test sequence will occur as described in the Component Test Sequence section above.

NOTE: Be sure to record the status code which is flashed 4 times at start of component test for further troubleshooting.

6.After component test is completed and furnace is operating properly, release blower access panel door switch, replace blower access panel, and replace main furnace door.

Step 9ÐChecking Heat Tape Operation (If Applicable)

In applications where the ambient temperature around the furnace is 32°F or lower, freeze protection measures are required. If this application is where heat tape has been applied, check to ensure it will operate when low temperatures are present.

9

Page 9
Image 9
Carrier 58MXA instruction manual ÐControl Center, ÐChecking Heat Tape Operation If Applicable

58MXA specifications

The Carrier 58MXA is an advanced heating and cooling system that exemplifies Carrier's commitment to innovation, efficiency, and comfort. Designed with the modern homeowner in mind, this gas furnace boasts a range of features that make it stand out in today's market.

One of the primary characteristics of the 58MXA is its impressive efficiency ratings. With AFUE (Annual Fuel Utilization Efficiency) ratings reaching up to 80%, the furnace ensures that homeowners can enjoy warmth during the colder months without excessive energy consumption. This efficiency not only translates to lower utility bills but also contributes to a reduced carbon footprint, making it an eco-friendly choice for environmentally conscious consumers.

The 58MXA utilizes a two-stage heating system which allows for more precise temperature control. This feature enables the furnace to operate at a lower stage for most of the heating cycle, providing comfortable warmth while conserving energy. When temperatures plummet, the system seamlessly switches to a higher stage for added heating capacity, ensuring that homes remain cozy even in extreme cold.

Furthermore, the Carrier 58MXA is engineered with advanced airflow and quiet operation in mind. Its variable-speed blower motor allows for optimal airflow throughout the home, enhancing overall comfort by distributing heat evenly in each room. This system also operates at a significantly reduced sound level compared to standard furnaces, promoting a peaceful indoor environment.

The 58MXA comes equipped with an innovative smart thermostat option, allowing users to monitor and control their home's heating remotely. This capability provides convenience and the opportunity for additional energy savings, as homeowners can adjust settings on the go or set schedules to meet their specific needs.

Durability is another hallmark of the Carrier 58MXA. Constructed with high-quality materials and backed by a manufacturer’s warranty, this furnace is built to withstand the rigors of temperature fluctuations and heavy use. Regular maintenance is also simplified, allowing homeowners to ensure optimal performance over the years.

Overall, the Carrier 58MXA is a top-of-the-line heating solution that combines efficiency, comfort, and advanced technology. Its innovative features and robust design make it an excellent choice for homeowners seeking a reliable and effective heating system. Whether for new construction or upgrading an existing home, the 58MXA is poised to provide years of dependable service.