Carrier 30XA Fault Code 87
Carrier 30XA Fault Code 87 is a informational alarm indicating: Reset of safety control. The most common causes include Manual reset of any safety device. Estimated repair time: 1-2 hours. This alarm requires immediate attention by a certified HVAC technician.
Alarm Description
Reset of safety control
Brand: Carrier | Model: 30XA (Screw Compressor Chiller) | Code: 87 | Severity: Info
Observable Symptoms
- Controller displays alarm code and description
- Chiller may be locked out or running in degraded mode
- Alarm indicator light is illuminated on control panel
What to Check First
Before diving into detailed diagnostics, start with this quick first check:
Probable Causes
- Manual reset of any safety device
- Safety condition resolved and unit restarted
- Control system reset after alarm acknowledgment
Recommended Inspection Steps
- Verify all safety conditions have been addressed
- Check that no other active alarms exist
- Review alarm history log for root cause
- Perform controlled restart per OEM procedure
Required Tools & Equipment
- Digital multimeter
- OEM service manual
- Safety PPE (gloves, safety glasses)
- 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 Carrier service representative for warranty-covered repairs
Related Fault Codes
Other Carrier 30XA codes that may be related:
OEM Service Manual Reference
OEM Reference: Carrier 30XA Service Manual (Form 30XA-6SI). Available through Carrier Commercial Systems technical support or partnered distributors.
Frequently Asked Questions
What does Carrier 30XA fault code 87 mean?
Fault code 87 on a Carrier 30XA chiller indicates: Reset of safety control. This is a informational alarm that requires diagnostic attention.
What causes Carrier 30XA alarm code 87?
Common causes include: Manual reset of any safety device; Safety condition resolved and unit restarted; Control system reset after alarm acknowledgment
How do I fix Carrier 30XA error code 87?
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 Carrier service representative.