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Heat pump condensing unit

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Trane Heat pump condensing unit 4TWV0048A1

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Trane Trane AHRI Outdoor - XV20i TruComfort Variable-Speed Heat Pump Heat pump condensing unit Repair, maintenance, and replacement planning
Trane 4TWV0048A1 product image

Technical Specifications

Product Specs

  • AHRI unit role: Outdoor
  • AHRI model/pattern: 4TWV0048A1
  • AHRI records represented: 1
  • AHRI equipment type: HP - Split System
  • AHRI refrigerant: R-410A
  • Verified catalog model: 4TWV0048A1
  • Verified product family: XV20i TruComfort Variable-Speed Heat Pump
  • Verified catalog brand: Trane
  • Verified model family: 4TWV0
  • AHRI model/pattern: 4TWV0048A1
  • Base catalog model/pattern: 4TWV0048A1
  • Application: legacy variable-speed outdoor heat pump
  • Nominal capacity: 4 ton
  • Refrigerant: R-410A
  • Official product page: https://www.trane.com/residential/en/products/heat-pumps/premier-20-tc-wg/
  • Configuration: TruComfort variable-speed outdoor heat pump

Useful troubleshooting details

  • Confirm the installed model and serial number, matched indoor or outdoor equipment, voltage, refrigerant, controls, and AHRI certificate before service or replacement planning.
  • Use the linked AHRI certificates to verify matched-system combinations, rebate conversations, and equipment eligibility before quoting replacement work.
  • Collect photos of the nameplate, equipment access, recent fault history, and comfort symptoms before dispatch or proposal planning.

Troubleshooting

Error Codes

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Err 18.04 Outdoor variable-speed control

Internal control failure

Record the flash pattern, avoid repeated reset attempts, and schedule GreenFlow service.
Err 67.00 Outdoor ambient sensor

Ambient temperature sensor fault

Document the flash pattern, check thermostat, filter, and visible outdoor-unit obstruction status, and schedule service if the condition remains.
Err 67.01 Outdoor coil sensor

Coil temperature sensor fault

Document the flash pattern, check thermostat, filter, and visible outdoor-unit obstruction status, and schedule service if the condition remains.
Err 67.03 External temperature sensor

External temperature sensor fault

Document the flash pattern, check thermostat, filter, and visible outdoor-unit obstruction status, and schedule service if the condition remains.
Err 67.04 Compressor discharge sensor

Discharge temperature sensor fault in cooling

Document the flash pattern, check thermostat, filter, and visible outdoor-unit obstruction status, and schedule service if the condition remains.
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Certification match

AHRI certificates

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ENERGY STAR certified HP - Split System

AHRI 10093500

AHRI 10093500 identifies a Mass Save qualified HP - Split System from Trane with outdoor unit 4TWV0048A1 and indoor unit TAM9A0C60V51.

Service planning

How GreenFlow handles 4TWV0048A1 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.

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Our Happy Customers

Anna F.

They showed up within an hour of me making the call on a Sunday. They fixed our system and taught us how to replace the fuse in the future. We would definitely call again.

Anna G.

They quickly identified the issue with the heating system and fixed it efficiently. He explained everything clearly and made sure I understood what was going on. Very professional and reliable, extremely satisfied with the service.

Jenny W.

Great service! On time, knowledgeable & professional

Michele Z.

Andrey was professional, prompt, smart, thorough and exceedingly pleasant. We are likely switching our current HVAC company to Green Flow.

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