Troubleshooting steps
Check for leaks; verify charge
HVAC Error Codes
Daikin E4 Error
Low pressure switch open
Details
Daikin E4 error indicates the low pressure switch has opened due to low refrigerant pressure.
Error typeSafety Switch
Typical causesLow refrigerant charge; system leak
SolutionsCheck for leaks; verify charge
SeverityHigh
Catalog references
Where this appears
DaikinE4
Utilities
Copy-paste helpers
Browse More
Explore HVAC Error Codes
View all 526 hvac error codes codes
Community
Discussion & Experiences
Share your experience, solutions, or ask questions about this error code. Help others troubleshoot!
Loading comments...