Others - Samsung AM036NXMDCR Service Manual

Troubleshooting

3-30 Others

1. Compressor Vlimit error: E465
If the compressor operation is abnormal, change the compressor and check for normal operation
→ If the compressor operation is normal, check the assembly between heat sink plate and if there is no problem, change the inverter PBA
2. Current sensor error: E468
EEPROM Uploading at indoor main PBA, Check if PCB operation is normal
3. OTP error: E471
Error occurs when the EEPROM DATA in the outdoor unit main PBA and inverter PBA is different from each other. Check the model
name and EEPROM code to use it
4. DC link voltage sensor error: E469
Error occurs when DC LINK value is not normal (DC LINK VOLTAGE: 280~320V)
Check the value of DC link when error occurs and check the reactor disconnection
5. Heat sink temperature error: E474, E500
Error occurs when heat sink of the inverter PBA exceeds rated range
Clean and remove any dust and other foreign substances on the outdoor unit and then check the connection between heat sink and
inverter PBA
Make sure grease is applied properly and screw is firmly fixed
6. Input current sensor error: E485
Detect the input sensor while the set is in stop status to check if there's any problem
When error occurs, turn on/off the power for number of time and if same error occurs while the power is off, change the inverter PBA
7. EEPROM read/write error: E470
Error occurs when there is no EEPROM data in the set. Check the model name and insert EEPROM for corresponding model or load the
EEPROM data.
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