Samsung Error Code E4-64: High Pressure Trip
Warning: Your Samsung heat pump has shut down due to a high-pressure fault. This prevents further operation until the issue is resolved.
How to Fix Samsung Code E4-64
- Step 1: Check the outdoor unit for any obstructions like leaves, debris, or snow blocking airflow. Clear away anything restricting the coil.
- Step 2: Ensure the condenser fan is running when the unit is calling for cooling. If the fan isn't running, the unit will overheat and trip the high-pressure switch.
- Step 3: If the problem persists after clearing obstructions and verifying fan operation, contact a qualified HVAC technician for diagnosis and repair.
How to Reset Samsung Code E4-64
- Turn off the unit using the remote control or wall controller.
- Turn off the circuit breaker for the outdoor and indoor units. Wait 60 seconds.
- Restore power at the breaker.
- Turn the unit on with the remote control. If the error returns, the fault needs professional diagnosis.
What does E4-64 mean?
The E4-64 error code on your Samsung heat pump indicates a high-pressure trip within the refrigerant system. Basically, the system detected that the refrigerant pressure went above a safe limit, so it shut down to prevent damage. This can happen for a few reasons, but it usually means something is restricting the flow of refrigerant or preventing proper heat dissipation. The high pressure can occur on either the high-pressure or low-pressure side, but this code is specific to the high-pressure side. Ignoring this error can lead to compressor damage or even a refrigerant leak, so it's important to address it promptly. This error will prevent the unit from cooling or heating.
Affected Models
Replacement Parts
| Part | OEM Number | Est. Cost |
|---|---|---|
| Condenser Fan Motor | DA31-00287A | — |
| High-Pressure Switch | AQ150A1C | — |
| Reversing Valve | — | — |
Related Codes on Same Models
| Code | Description | Severity |
|---|---|---|
| E1 | Communication Error | Warning |
| E2 | Room Temp Sensor Fault | Warning |
| E3 | Indoor Coil Sensor Fault | Warning |
| E4 | Outdoor Coil Sensor Fault | Warning |
| E5 | Inverter Overcurrent | Warning |
| E6 | Outdoor Fan Motor Fault | Warning |
| E7 | Indoor Fan Motor Fault | Warning |
| E1-21 | Compressor Overcurrent | Warning |
| E1-54 | IPM Fault | Warning |
| E2-14 | Freeze Protection Active | Warning |