York YK Fault Code EB
York YK Fault Code EB is a warning alarm indicating: Low evaporator temperature. The most common causes include Low refrigerant charge. Estimated repair time: 1-2 hours. This alarm requires immediate attention by a certified HVAC technician.
Alarm Description
Low evaporator temperature
Brand: York | Model: YK (Centrifugal Chiller (Water-Cooled)) | Code: EB | Severity: Warning
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
- Low refrigerant charge
- Expansion valve issue
- Low water flow
- Fouled evaporator
Recommended Inspection Steps
- Check charge
- Inspect valve
- Measure flow
- Clean evaporator
Required Tools & Equipment
- Coil cleaning brush and coil cleaner
- Infrared thermometer or calibrated temperature probe
- 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 York service representative for warranty-covered repairs
Related Fault Codes
Other York YK codes that may be related:
OEM Service Manual Reference
OEM Reference: York YK Centrifugal Chiller Service Manual (Form 160.60-S1). Johnson Controls Technical Literature.
Frequently Asked Questions
What does York YK fault code EB mean?
Fault code EB on a York YK chiller indicates: Low evaporator temperature. This is a warning alarm that requires diagnostic attention.
What causes York YK alarm code EB?
Common causes include: Low refrigerant charge; Expansion valve issue; Low water flow
How do I fix York YK error code EB?
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 York service representative.