York YK Fault Code E8
York YK Fault Code E8 is a warning alarm indicating: Condenser water flow fault. The most common causes include Condenser pump stopped. Estimated repair time: 4-6 hours (requires isolating water circuit, mechanical or chemical tube cleaning). This alarm requires immediate attention by a certified HVAC technician.
Alarm Description
Condenser water flow fault
Brand: York | Model: YK (Centrifugal Chiller (Water-Cooled)) | Code: E8 | Severity: Warning
Observable Symptoms
- Water flow indicator shows zero or low flow
- Differential pressure across evaporator or condenser is low
- Pump may not be running or making abnormal noise
What to Check First
Before diving into detailed diagnostics, start with this quick first check:
Probable Causes
- Condenser pump stopped
- Flow switch fault
- Tubes fouled
Recommended Inspection Steps
- Verify pump
- Check flow switch
- Clean tubes
Required Tools & Equipment
- Coil cleaning brush and coil cleaner
- Safety PPE (gloves, safety glasses, face shield)
Estimated Repair Time
4-6 hours (requires isolating water circuit, mechanical or chemical tube cleaning)
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 E8 mean?
Fault code E8 on a York YK chiller indicates: Condenser water flow fault. This is a warning alarm that requires diagnostic attention.
What causes York YK alarm code E8?
Common causes include: Condenser pump stopped; Flow switch fault; Tubes fouled
How do I fix York YK error code E8?
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.