Samsung Heat Pump Error Code E161

E161 indicates a digital compressor loading failure or an OLP (over-load protector) trip detected when temperature and pressure conditions show no compression is occurring. The control board has determined that the compressor is not building pressure as expected. This fault protects the system from running a compressor that is either thermally overloaded or mechanically failed. Diagnosis starts with checking resistance across the three compressor terminal pairs.

No. E161 is a protective fault that indicates the compressor is not functioning correctly, and continuing to operate the system can cause additional damage to the compressor or other components in the refrigerant circuit. The system has flagged this fault specifically to prevent further harm. The unit should remain off until the fault is diagnosed and resolved by a qualified technician.

Repair costs depend heavily on the root cause. If the issue is a temporary OLP trip with no permanent damage, costs may be limited to a diagnostic service call, typically in the range of $75 to $150. If the compressor itself has failed and requires replacement, costs can range from $800 to $2,500 or more depending on the unit size and labor involved. A refrigerant circuit repair or leak fix adds additional cost for parts and refrigerant recharge.

Some cases of E161 resolve on their own if the cause is a temporary OLP trip from overheating. Turning off the unit and allowing the compressor to cool for an extended period, then restarting, may clear the fault if the OLP resets. However, if the compressor windings are damaged, the compressor is seized, or there is a refrigerant issue, professional repair is required. Working on compressor terminals and refrigerant systems involves safety risks and typically requires licensed technicians.

A reset may temporarily clear the E161 code if the underlying cause was a temporary OLP trip due to overheating, but only after the compressor has had sufficient time to cool down. If the compressor has a winding failure, mechanical fault, or refrigerant circuit problem, the error will return shortly after restarting. Simply resetting without diagnosing the root cause is not a reliable fix and can lead to repeated faults or further damage.