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Carrier® WeatherMaker® - 7.5 Ton Packaged Rooftop Gas Heat & Electric Unit R-454B (575-3-60) service and support

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Carrier Commercial Rooftop Unit - 48FE Rooftop Unit Repair, maintenance, and replacement planning
Carrier® WeatherMaker® - 7.5 Ton Packaged Rooftop Gas Heat & Electric Unit R-454B (575-3-60) product image

Product service snapshot

Carrier® WeatherMaker® - 7.5 Ton Packaged Rooftop Gas Heat & Electric Unit R-454B (575-3-60) service details

Carrier® WeatherMaker® - 7.5 Ton Packaged Rooftop Gas Heat & Electric Unit R-454B (575-3-60) is a Carrier® rooftop unit record from the Carrier Enterprise catalog. Catalog model: 48FEFM08A3M1-8B0A0. Product family: 48FE. Green Flow Solution uses this page for commercial model identification, service planning, maintenance conversations, repair diagnostics, and replacement matching.

  • Brand: Carrier
  • Model or series: Carrier® WeatherMaker® - 7.5 Ton Packaged Rooftop Gas Heat & Electric Unit R-454B (575-3-60)
  • Equipment type: Rooftop Unit
  • Product group: Commercial Rooftop Unit - 48FE

Technical snapshot

Carrier® WeatherMaker® - 7.5 Ton Packaged Rooftop Gas Heat & Electric Unit R-454B (575-3-60) technical snapshot

Product Specs

  • Model: 48FEFM08A3M1-8B0A0
  • Manufacturer Number: 48FEFM08A3M1-8B0A0
  • Vendor Number: 48FEFM08A3M1-8B0A0
  • Catalog Brand: Carrier®
  • Product Family: 48FE
  • AHRI Usage: Packaged
  • Air Flow Direction: Horizontal / Vertical
  • BTU Input: 180,000-224,000
  • BTU Output: 146,000-181,000
  • Blower Motor HP: 2 2/5
  • Blower Motor RPM: 250-2,000
  • Blower Motor Speeds: 2
  • Blower Motor Type: ECM (Electronically Commutated Motor)
  • Blower Wheel Diameter: 22"
  • Brand: Carrier®
  • CFM: 2,650
  • CFM Heating: 2,240-4,200
  • Color: Gray
  • Compressor Type: Scroll
  • Condenser Coil Fins Per Inch (FPI): 18
  • Condenser Coil Metering Device: TXV/TEV - Thermostatic Expansion Valve
  • Condenser Fan Blade Diameter: 22
  • Condenser Fan Motor Qty: 2
  • Condenser Motor HP: 1/4
  • Condenser Motor RPM: 1,100
  • Condenser Motor Type: PSC (Permanent Split Capacitor)
  • Cooling Capacity: 86,000
  • Country Of Origin: MEX
  • Cycle/Hertz: 60 Hz
  • Drain Connection Size: 3/4"
  • Drive Type: Direct
  • EER: 11.2
  • Energy Star Rated: NO
  • Evaporator Coil Fins Per Inch (FPI): 15
  • Evaporator Coil Metering Device: TXV/TEV - Thermostatic Expansion Valve
  • Fuel Type: Natural Gas or LP
  • Gas Connection Size: 3/4"
  • Gas Connection Type: NPT
  • Heat Exchanger Type: Tubular
  • Height: 41.25
  • IEER: 15
  • Ignition Type: Direct Spark (DSI)
  • Length: 59.5
  • Maximum Overcurrent Protection (MOCP): 25
  • Outdoor Air Filter Size (OA) In Inches (W X H X D): 20 x 24 x 1
  • Phase: Three
  • Prop 65: YES
  • Rated Load Amps (RLA): 5.1
  • Refrigerant: R-454B
  • Return Air Filter Size (RA) In Inches (W X H X D): (4) 16 x 20 x 2
  • Sound Level (dBA): 79
  • Stages Cooling: 2
  • Stages Heating: 2
  • Thermal Efficiency: 81%
  • Tier: WeatherMaker®
  • Tonnage: 7.5
  • Voltage: 575 VAC
  • Weight: 787
  • Width: 88.125

Useful troubleshooting details

  • Confirm the exact model number, serial number, installed equipment type, and site voltage before service or replacement planning.
  • Match replacement equipment and accessories against current Carrier compatibility requirements, refrigerant type, capacity, airflow, and local code requirements.

Service planning

How GreenFlow handles Carrier® WeatherMaker® - 7.5 Ton Packaged Rooftop Gas Heat & Electric Unit R-454B (575-3-60) requests

1

Identify the equipment

Confirm the model or series name, serial number if available, photos, and whether the unit is roof, exterior, basement, or mechanical-room equipment.

2

Describe the service issue

Share no heat, no cooling, weak airflow, error codes, alarms, leaks, noise, control problems, or comfort complaints.

3

Review access and history

Include access notes, tenant or business-hour constraints, filter status, recent repairs, and maintenance records when available.

4

Plan the next step

GreenFlow can route the request for diagnostics, repair planning, maintenance, replacement scope, or related system upgrades.

Carrier® WeatherMaker® - 7.5 Ton Packaged Rooftop Gas Heat & Electric Unit R-454B (575-3-60) service questions

What Carrier Carrier® WeatherMaker® - 7.5 Ton Packaged Rooftop Gas Heat & Electric Unit R-454B (575-3-60) alarm or error-code details should I share?

Share the exact alarm, fault, or status message shown on the unit controller, thermostat, service app, or building automation system. Photos of the control screen, unit nameplate, and thermostat/BAS screen help the team understand the issue before dispatch.

What should I check before requesting Carrier® WeatherMaker® - 7.5 Ton Packaged Rooftop Gas Heat & Electric Unit R-454B (575-3-60) service?

Confirm the thermostat or building schedule, whether one tenant space or multiple zones are affected, recent filter or maintenance history, and whether the RTU is locked out, noisy, short cycling, or not responding. Do not open rooftop panels or reset electrical equipment if it is unsafe.

Why would a Carrier® WeatherMaker® - 7.5 Ton Packaged Rooftop Gas Heat & Electric Unit R-454B (575-3-60) run but not heat or cool correctly?

Possible causes include airflow restrictions, dirty filters, economizer or damper issues, sensor or control faults, compressor or reversing-valve issues, defrost problems, refrigerant concerns, electrical faults, or building automation scheduling. A technician needs the full symptom and alarm context to diagnose it safely.

When is a Carrier® WeatherMaker® - 7.5 Ton Packaged Rooftop Gas Heat & Electric Unit R-454B (575-3-60) issue urgent?

Treat the request as urgent when no heat or no cooling affects occupied space, an alarm or lockout is active, there is electrical odor, unusual noise, water intrusion, unsafe rooftop access, or repeated tenant comfort complaints. Include business hours and access notes when scheduling.

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Our Happy Customers

Marlene W.

It was a pleasure doing business with Green Flow. They kept me informed during the the entire process. The tech (Andrey) was knowledgeable and knew exactly what the problem was with the furnace. The furnace motor was installed the next day and I am satisfied with the job,...

Hyun L.

They are very professional and reliable.

Jennifer Q.

Andrey is a great technician. He was incredibly respectful of our home, and he worked efficiently to complete the service.Green Flow Solution scheduled us easily. I like that they text a reminder for service on the day scheduled. I especially appreciate that I didn't have to wait days...

Thabiti B.

Quick, highly competent and professional. Green Flow did great work.

Truc S.

I was frustrating about my heat system, they were very responsive and efficient. Andrey show up at my house after 30 mins from my call and on Sunday. He very acknowledge what is he doing. Thank you so much

Michael C.

Very fast turnaround time and repair will use again for sure

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