Trane CVHF Fault Code F6

F6
High Pressure Cutout - Compressor 2A
Critical
SAFETY WARNING: Commercial chillers contain high-pressure refrigerants and high-voltage electrical components (208V-4160V). Only EPA Section 608 certified technicians should perform diagnostic work. Always follow lockout/tagout procedures and wear appropriate PPE. Do not attempt repairs without proper training and equipment.
AI Summary

Trane CVHF Fault Code F6 is a critical safety alarm indicating: High Pressure Cutout - Compressor 2A. The most common causes include Condenser fouled. Estimated repair time: 1-2 hours. This alarm requires immediate attention by a certified HVAC technician.

Alarm Description

High Pressure Cutout - Compressor 2A

Brand: Trane  |  Model: CVHF (Hermetic Centrifugal Chiller)  |  Code: F6  |  Severity: Critical

Observable Symptoms

  • Compressor shuts down on high pressure safety cutout
  • Discharge pressure gauge reads above normal operating range
  • Condenser may feel hot to touch or airflow feels restricted

What to Check First

Before diving into detailed diagnostics, start with this quick first check:

Quick Start: Clean condenser

Probable Causes

  • Condenser fouled
  • Non-condensables
  • Overcharge
  • Fan failure

Recommended Inspection Steps

  1. Clean condenser
  2. Check non-condensables
  3. Verify charge
  4. Test fan

Required Tools & Equipment

  • Coil cleaning brush and coil cleaner
  • PT chart for refrigerant type
  • Safety PPE (gloves, safety glasses, face shield)

Estimated Repair Time

1-2 hours

When to Call a Professional

  • If the fault persists after completing all recommended inspection steps
  • If you observe unusual noises, vibrations, or oil leaks from the compressor
  • If refrigerant charge levels are outside OEM specifications and EPA-certified recovery is needed
  • If electrical measurements show voltage imbalance greater than 2% between phases
  • If the fault recurs immediately after reset, indicating an unresolved safety condition
  • Contact an authorized Trane service representative for warranty-covered repairs

Related Fault Codes

Other Trane CVHF codes that may be related:

EDFDF5B5BA

OEM Service Manual Reference

OEM Reference: Trane CVHF Hermetic Centrifugal Chiller Service Manual (SVR-SVN003-EN). Available through Trane Commercial support.

Frequently Asked Questions

What does Trane CVHF fault code F6 mean?

Fault code F6 on a Trane CVHF chiller indicates: High Pressure Cutout - Compressor 2A. This is a critical safety alarm that requires diagnostic attention.

What causes Trane CVHF alarm code F6?

Common causes include: Condenser fouled; Non-condensables; Overcharge

How do I fix Trane CVHF error code F6?

Follow the recommended inspection steps below. Start with the quick check, then proceed through each step. If the fault persists after all steps, contact an authorized Trane service representative.

Disclaimer: All lookup data is for reference only. Do not use this information to replace certified professional HVAC technician judgment. Always refer to original OEM official service manual for Trane CVHF service procedures.