Error codes – κωδικοί βλαβών κλιματιστικά Nobu

Error codes – κωδικοί βλαβών κλιματιστικά Nobu.

 

Indoor Units: NBO-09IDU , NBO-12IDU , NBO-18IDU , NBO-24IDU

 

Outdoor Units: NBO-09ΟDU , NBO-12ΟDU , NBO-18ΟDU , NBO-24ΟDU

 

Indoor unit error display

O – light X – off ⊗ – flash

Operation lamp Timer lamp Display LED STATUS
1 time X E0 Indoor unit EEPROM parameter error
2 times X E1 Indoor / outdoor units communication error
4 times X E3 Indoor fan speed has been out of control
5 times X E4 Indoor room temperature sensor T1 open circuit or short circuit
6 times X E5 Evaporator coil temperature sensor T2 open circuit or short circuit
7 times X EC Refrigerant leakage detection
1 time O F0 Overload current protection
2 times O F1 Outdoor ambient temperature sensor T4 open circuit or short circuit
3 times O F2 Condenser coil temperature sensor T3 open circuit or short circuit
4 times O F3 Compressor discharge temperature sensor T5 open circuit or short circuit
5 times O F4 Outdoor unit EEPROM parameter error
6 times O F5 Outdoor fan speed has been out of control
1 time P0 IPM malfunction or IGBT over-strong current protection
2 times P1 Over voltage or over low voltage protection
3 times P2 High temperature protection of IPM module or compressor
4 times P3* Outdoor ambient temperature too low
5 times P4 Inverter compressor drive error

* P3

1. In heating mode, when the outdoor temperature is lower than -13°F (-25℃) for 1 hour, the indoor unit display error code P3.

2. If the outdoor temperature is higher than -7.6°F (-22℃) for 10 minutes and compressor stop for 1 hour or outdoor temperature is higher than 23°F (-5℃) for 10 minutes, then the unit will return to work.

Explanation of error codes

E0 (indoor) / F4 (outdoor) Indoor or outdoor PCB main chip does not receive feedback from EEPROM chip.

E1 – Indoor unit does not receive the feedback from outdoor unit during 110 seconds and this condition happens four times continuously.

E3/F5 – When indoor fan speed is too low (300RPM) for certain time, the unit will stop and the LED will display the failure.

E4/E5/F1/F2/F3 – If the sampling voltage is lower than 0.06V or higher than 4.94V, the LED will display the failure.

EC – Define the initial evaporator coil temperature T2 when the compressor just starts running as Tcool. In the first 5 minutes after the compressor starts up in cooling mode, if T2<Tcool-2℃ (Tcool – 35.6℃) does not keep continuous 4 seconds and this situation happens 3 times, the display area will show “EC” and the unit will turn off . T2 sensor faulty – Indoor PCB faulty – System problems, such as leakage or blocking.

F0 – An abnormal current rise is detected by checking the specified current detection circuit.

P0 – When the voltage signal that IPM send to compressor drive chip is abnormal, the display LED will show “P0” and AC will turn off .

P1 – An abnormal voltage rise or drop is detected by checking the specified voltage detection circuit.

P2 – If the sampling voltage is not 5V, the LED will display the failure.

P4 – An abnormal inverter compressor drive is detected by a special detection circuit, including communication signal detection, voltage detection, compressor rotation speed signal detection and so on. Error codes – κωδικοί βλαβών κλιματιστικά Nobu.

Indoor Units: NBO-09IDU , NBO-12IDU , NBO-18IDU , NBO-24IDU

Outdoor Units: NBO-09ΟDU , NBO-12ΟDU , NBO-18ΟDU , NBO-24ΟDU

Author: tapavakos

Ψυκτικός

Leave a Reply