Service Manual

Inverter PCB short interruption

Error

Inverter PCB

Check Point 1 : Noise, momentary power failure, voltage drop

Check if temporary voltage drop was not generated.

Check if momentary power failure was not generated.

Check if ground is connection correctly or there are no related cables near the power line.

Check Point 2 : Check the magnetic contactor (for Inverter) coil side wiring

Connector and wiring connection state check

Cable open check

Check Point 3 : Check the wiring

(Power supply to Filter PCB (INV) to Inverter PCB)

Connector and wiring connection state check

Check Point 4 : Check Main PCB

Chack Main PCB. (Refer to "Sarvise Parts Information 3, 4")

Check Point 5 : Replace Inverter PCB

Replace Inverter PCB.

1. Noise, momentary power failure, voltage drop

2. Magnetic Relay (for Inverter) coil side wiring disconnection, open

3. Power supply to Filter PCB (INV) to Inverter PCB wiring disconnection, open

4. Main PCB defective 5. Inverter PCB defective

''Short interruption" received from Inverter PCB

Indoor Unit : No Display

Outdoor Unit : E. 6 7. 2

Error Code : No display

Trouble shooting 32 E67. 2

Indicate or Display:

Detective Actuators:

Detective details:

OUTDOOR UNIT Error Method:

Forecast of Cause :

04-41