York YVAA Fault Code E5
York YVAA Fault Code E5 is a warning alarm indicating: Chilled water pump failure. The most common causes include Pump motor overload tripped. Estimated repair time: 1-2 hours. This alarm requires immediate attention by a certified HVAC technician.
Alarm Description
Chilled water pump failure
Brand: York | Model: YVAA (Variable Speed Screw Chiller) | Code: E5 | 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
- Pump motor overload tripped
- Pump mechanical seal failure
- Pump starter or VFD fault
Recommended Inspection Steps
- Check pump motor overload and reset
- Inspect pump for seal leakage
- Verify pump starter or VFD operation
- Clean pump suction strainer
Required Tools & Equipment
- Coil cleaning brush and coil cleaner
- Electronic leak detector
- 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 YVAA codes that may be related:
OEM Service Manual Reference
OEM Reference: York YVAA Variable Speed Screw Chiller Service Manual (Form 160.72-S1). Johnson Controls Technical Literature.
Frequently Asked Questions
What does York YVAA fault code E5 mean?
Fault code E5 on a York YVAA chiller indicates: Chilled water pump failure. This is a warning alarm that requires diagnostic attention.
What causes York YVAA alarm code E5?
Common causes include: Pump motor overload tripped; Pump mechanical seal failure; Pump starter or VFD fault
How do I fix York YVAA error code E5?
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.