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Heat pump condensing unit

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Trane Heat pump condensing unit DHK048A4*(0,A,C)(L,M,H)***2

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Trane Trane AHRI Outdoor - Precedent Hybrid Dual Fuel Rooftop Unit Heat pump condensing unit Repair, maintenance, and replacement planning
Trane DHK048A4*(0,A,C)(L,M,H)***2 product image

Technical Specifications

Product Specs

  • AHRI unit role: Outdoor
  • AHRI model/pattern: DHK048A4*(0,A,C)(L,M,H)***2
  • AHRI records represented: 1
  • AHRI equipment type: Central HP
  • AHRI tonnage: 4.083333333333333
  • AHRI refrigerant: R-454B
  • Verified catalog model: DHK048A4*(0,A,C)(L,M,H)***2
  • Verified product family: Precedent Hybrid Dual Fuel Rooftop Unit
  • Verified catalog brand: Trane
  • Verified model family: DHK
  • AHRI model/pattern: DHK048A4*(0,A,C)(L,M,H)***2
  • Base catalog model/pattern: DHK048A4*(0,A,C)(L,M,H)***2
  • Application: packaged rooftop heat pump with auxiliary gas heat
  • Nominal capacity: 4 ton
  • Refrigerant: R-454B
  • Official product page: https://www.trane.com/commercial/north-america/us/en/products-systems/packaged-units-and-split-systems/rooftop-units/precedent-heat-pump.html
  • Official technical documentation: https://elibrary.tranetechnologies.com/public/commercial-hvac/Literature/Product%20Catalog/PKGP-PRC023*-EN
  • Unit controller family: Symbio 700 or legacy Trane rooftop controls depending on model vintage
  • Commercial rooftop application: curb-mounted packaged unit

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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Flashing Slow Integrated furnace control

Normal - no call for heat

Document the flash pattern, check thermostat, filter, and visible outdoor-unit obstruction status, and schedule service if the condition remains.
Ignition Off Precedent gas heat ignition board

No power or ignition-board failure

Record the flash pattern, avoid repeated reset attempts, and schedule GreenFlow service.
RTRM LED2 1 Blink ReliaTel RTRM controls

Emergency stop open during test mode

Record the flash pattern, avoid repeated reset attempts, and schedule GreenFlow service.
Flashing Fast Integrated furnace control

Normal - call for heat

Document the flash pattern, check thermostat, filter, and visible outdoor-unit obstruction status, and schedule service if the condition remains.
Ignition Fast Flash Precedent gas heat ignition board

Ignition board not communicating with RTRM

Record the flash pattern, avoid repeated reset attempts, and schedule GreenFlow service.
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Certification match

AHRI certificates

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Eligible Central HP <5.4 tons

AHRI 215610795

AHRI 215610795 identifies a Mass Save qualified Central HP <5.4 tons from TRANE with outdoor unit DHK048A4*(0,A,C)(L,M,H)***2.

Service planning

How GreenFlow handles DHK048A4*(0,A,C)(L,M,H)***2 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

Sharad W.

Green Flow and the people who work there are terrific. Vlad and Andre are excellent. Andre was very helpful. He was punctual, respectful, efficient and knowledgeable. He did not try to sell me something I didn’t need ( as others have done before). I was charged $99 which...

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

Melissa S.

The repair person came quickly and was super efficient and polite, and showed me what to do next time. He gave my dog a quick pay and was off again.

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