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Heat pump condensing unit

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Trane Heat pump condensing unit EXWK0603

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Trane Trane AHRI Outdoor - Axiom Water-to-Water Water Source Heat Pump Heat pump condensing unit Repair, maintenance, and replacement planning
Trane EXWK0603 product image

Technical Specifications

Product Specs

  • AHRI unit role: Outdoor
  • AHRI model/pattern: EXWK0603
  • AHRI records represented: 1
  • AHRI equipment type: GWHP
  • AHRI tonnage: 4.666666666666667
  • Verified catalog model: EXWK0603
  • Verified product family: Axiom Water-to-Water Water Source Heat Pump
  • Verified catalog brand: Trane
  • Verified model family: EXW
  • AHRI model/pattern: EXWK0603
  • Base catalog model/pattern: EXWK0603
  • Application: water-to-water WSHP for hydronic heating and cooling
  • Nominal capacity: 5 ton
  • Refrigerant: R-454B
  • Official product page: https://www.trane.com/commercial/north-america/us/en/products-systems/packaged-units-and-split-systems/water-source-heat-pumps/water-to-water-wshp.html
  • Configuration: water-to-water heat pump module

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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Anti-short cycle Compressor timing control

Compressor anti-short-cycle timing active

Document the flash pattern, check thermostat, filter, and visible outdoor-unit obstruction status, and schedule service if the condition remains.
Brownout condition Low-voltage protection

Low-voltage brownout diagnostic

Record the flash pattern, avoid repeated reset attempts, and schedule GreenFlow service.
Soft lockout LP Low pressure safety

Low-pressure soft lockout

Record the flash pattern, avoid repeated reset attempts, and schedule GreenFlow service.
Soft lockout HP High pressure safety

High-pressure soft lockout

Record the flash pattern, avoid repeated reset attempts, and schedule GreenFlow service.
Manual lockout LP Low pressure safety

Low-pressure manual lockout

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 GWHP

AHRI 215744818

AHRI 215744818 identifies a Mass Save qualified GWHP from TRANE with outdoor unit EXWK0603.

Service planning

How GreenFlow handles EXWK0603 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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Ray

Just had a service call because my tankless water heater stopped working with E110 code. Andrey located the root cause real quick and fixed the issue within half an hour, also gave reasonable recommendations for further maintenance.

Michele Z.

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

Dev W.

I had a breakdown of my cooling system and Hanna at Green Flow responded to my request right away. They scheduled me same day. The team at Green Flow was easy to communicate with over phone and text. They kept me updated on delays on arrival of the...

Terry S.

Excellent service from best tech!

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