Samsung DVM S ECO BIG Series Service Manual page 97

■ Error due to operation failure of inverter compressor 1. (E-461)
Outdoor unit Display
Judgement Method
Cause of problem
Power Off and then Restart
Is Hot Gas Bypass
Valve startup the initial
power is applied?
Hot Gas Bypass Valve
initial startup does it
Is the resistance
value between different
phases of compressor
(U ↔ V, V ↔ W,W ↔ U)
less than 2Ω?
Is the resistance
between the body of
Compressor and
chassis MΩ?
Does the Compressor
connection wire
properly connect to
the compressor?
Replace Inverter PCB
Samsung Electronics
• Startup, and then if the speed increase is not normally.
• Detected by H/W or S/W.
• Compressor connection error.
• Defective Compressor.
• Defective PCB.
Yes
work?
Yes
Yes
Yes
Yes
E-461
No
Remove the obstacles and check the status of the
installation.
No
Power Off, and then replacement or correction of
the sensor location.
No
Replace Compressor.
Yes
Replace Compressor
Yes
Check the connection wire
(Check the status of the connection U V W )
Yes
Troubleshooting
4-55