How do I fix error code COMPRESSOR_ERROR on my Samsung RF28T5A01S9?

1. undefined: Wait 10 minutes minimum after power OFF before restarting (7-minute minimum protects compressor) 2. undefined: In forced operation mode, verify compressor activation 3. undefined: Check DC 15V at ZD501 4. undefined: Verify AC 115V at CN81 5. undefined: Check compressor connector CN102 insertion 6. undefined: Verify DC 5V at C1009 7. undefined: Check F-Sensor reading and forced operation signal

Samsung RF28T5A01S9Refrigerator

Error Code COMPRESSOR_ERROR

Compressor not starting or running properly due to electrical or mechanical failure

Critical

Stop using immediately - risk of damage or safety issue

Also displayed as: Compressor Not Running

What This Means

5-minute startup delay after power ON (normal for protection); Compressor locked or mechanical jam; Bad connector contact at CN102; Inverter circuit failure (IGBT or control circuit); Wiring disconnection from MAIN PCB; DC 15V or AC 115V supply failure; Overload protection activation

What actually causes this:

The compressor motor cannot start due to power supply failure, electrical disconnection, or internal mechanical failure

First Thing to Check

Wait at least 10 minutes after power off; check power plug; verify AC power at outlet

Parts Involved

Compressor Motor (Inverter type)MAIN PCB CN102 connectorSMPS power supply (12V, 5V, 15V)Inverter control circuit on MAIN PCB

How to Fix

1
Wait 10 minutes minimum after power OFF before restarting (7-minute minimum protects compressor)
2
In forced operation mode, verify compressor activation
3
Check DC 15V at ZD501
4
Verify AC 115V at CN81
5
Check compressor connector CN102 insertion
6
Verify DC 5V at C1009
7
Check F-Sensor reading and forced operation signal