Samsung DVM S ECO BIG Series Service Manual page 80

Troubleshooting
■ DC voltage sensor error of Fan2. (E-396) /
DC voltage sensor error of inverter PBA 1. (E-469) /
DC voltage sensor error of Fan1. (E-496)
Outdoor unit Display
Judgement Method
Cause of problem
Is Power connection
accurately connected?
Is Reactor accurately
connected?
Did the Fuse is short ?
Is EMI PCB and
Inverter PCB accurately
connected?
Is Inverter PCB and
Fan PCB DC -Link
voltage connection wire
accurately connected?
Replace Inverter PCB.
4-38
• D C voltage detection : Judged as an error if the detected value is more than 2.8V
or 0.2V less than
• Input voltage defective
• AC Power wiring error
• Momentary Overvoltage / Low voltage occurs
• PCB voltage sensing circuit defective
Power Off
Yes
Yes
Yes
Yes
Yes
E-396 / E-469 / E-496
No
Power Cable re -connection.
No
Check the Reactor connection.
Yes
No
Power Off and then re -connection.
Replace Fuse.
Replace Fan PCB
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