Others - Samsung AC071MN4PKH Service Manual

Troubleshooting

4-4-22. Others

1. EEPROM option error (E163) : Reset the options.
2. Temperature fuse error : E198
- If the Terminal Box temperature rise fuse is disconnected, replace the PCB.
- Check the wiring connector of temperature fuse.
3. Current sensor error : Upload EEPROM to the Main PCB of the outdoor unit.
- After checking for normal operation of PCB, replace the inverter PCB.
4. Compressor Vlimit error : E465
- If the compressor is abnormally run, replace the compressor and then ensure that it works normally.
If the compressor is normally run, check the assembling between the heatproof plate and the Inverter PCB and then if there is no
abnormality, replace the Inverter PCB.
5. 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
6. 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.
7. 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, replace the Inverter PCB.
8. OTP error : E471
- Upload EEPROM to the Main PCB of the outdoor unit.
9. Capacity inconsistence error : E556
- Check the model name between the outdoor and indoor unit and re-enter the option code to the indoor unit.
10. 3-phase power wire disconnection : E424
- Check for disconnection of the 3-phase (open) power wire, and check the disconnected EMI PBA fuse.
11. Outdoor unit freezing detection (at the stop of the compressor) : E403
Outdoor overload protection control (at the stop of the compressor) : E404
- Check whether the fan and the motor operate normally.
- Check the operation of EEV.
- Check the temperature sensor of the indoor unit heat exchanger.
- Check the indoor unit inlet blockage.
12. Outdoor unit compressor discharging temperature protection control : E416
- Check for lack of refrigerant.
- Check the blockage of the solenoid valve.
- Check the malfunction of the exhaust temperature sensor.
- Check the EEV.
13. Error of impossibility to operate heating at outdoor temperature exceeding 30°C : E440
Error of impossibility to operate cooling at outdoor temperature of -5°C or under : E441
- It is not the error code in the product and it is a specification to protect the product by limiting the temperature scope of use.
- Use by referring to the temperature scope of use on the product manual, etc.
14. OLP overheating and compressor stop : E463
- Check the opening of the sub valve.
- Check the amount of the cooling water.
- Check the OLP sensor.
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