Daikin EWAD Fault Code E1
Daikin EWAD Fault Code E1 is a warning alarm indicating: Circuit board failure. The most common causes include Control board component failure. Estimated repair time: 1-3 hours (requires board replacement, configuration, and commissioning). This alarm requires immediate attention by a certified HVAC technician.
Alarm Description
Circuit board failure
Brand: Daikin | Model: EWAD (Screw Compressor Chiller) | Code: E1 | 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
- Control board component failure
- Power surge damage to board
- Board firmware corruption
Recommended Inspection Steps
- Check board power supply voltage
- Inspect board for visible component damage
- Verify firmware version is current
- Replace control board if component failure confirmed
Required Tools & Equipment
- Clamp-on ammeter
- Digital multimeter
- Safety PPE (gloves, safety glasses, face shield)
Estimated Repair Time
1-3 hours (requires board replacement, configuration, and commissioning)
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 Daikin service representative for warranty-covered repairs
Related Fault Codes
Other Daikin EWAD codes that may be related:
OEM Service Manual Reference
OEM Reference: Daikin EWAD Air-Cooled Screw Chiller Service Manual. Available through Daikin Applied technical support.
Frequently Asked Questions
What does Daikin EWAD fault code E1 mean?
Fault code E1 on a Daikin EWAD chiller indicates: Circuit board failure. This is a warning alarm that requires diagnostic attention.
What causes Daikin EWAD alarm code E1?
Common causes include: Control board component failure; Power surge damage to board; Board firmware corruption
How do I fix Daikin EWAD error code E1?
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 Daikin service representative.