Samsung Air Conditioner Error Code P507

P507 means the Samsung air conditioner has shut down the compressor because the high pressure sensor detected unsafe refrigerant pressure on the discharge side of the system. This is a protective function designed to prevent compressor and refrigerant circuit damage. The unit will not restart normally until the underlying cause of elevated high-side pressure is corrected.

Resetting the unit may temporarily clear the P507 fault and allow the compressor to restart, but the error will return if the root cause has not been addressed. High-side pressure will exceed the safety threshold again under operating conditions, causing the compressor to shut down repeatedly. A reset should only be used after performing diagnostic checks and correcting any identified issues.

Repair costs vary depending on the root cause identified. Simple service valve adjustments or coil cleaning may only involve a diagnostic service call fee, typically in the range of $75 to $150. Outdoor fan motor replacement can cost between $150 and $400 including parts and labor. If refrigerant recovery, evacuation, and recharge are needed, costs can range from $200 to $600 or more depending on the refrigerant type and system capacity.

Some steps, such as checking that outdoor unit service valves are fully open and cleaning a blocked condenser coil, can be performed without specialized tools. However, diagnosing refrigerant charge issues, checking fan motor performance, and working with refrigerants requires EPA certification and professional equipment. If basic checks do not resolve the error, a licensed HVAC technician should be called.

Yes, persistently high refrigerant pressure is a serious condition that can stress compressor components, refrigerant lines, and fittings. The P507 protection control is designed to shut the compressor down before damage occurs, so the system should not be forced to run while this fault is active. Continued operation attempts without resolving the cause can lead to compressor failure or refrigerant line rupture.