Product specifications

Samsung Electronics 4-10

4-5 Fault Diagnosis by Symptom

4-5-1 No Power(completely dead) - Initial diagnosis

1. Checklist :

1) Is Power source voltage normal?

2) Is AC power linked correctly? ( miss-wiring, wire detaching etc. )

3) Is any LED on the MAIN PCB of Outdoor unit lit?

4) Is terminal voltage for indoor unit normal? (230Vac nominal)

5) Is Wired remote controller installed correctly?

2. Troubleshooting procedure

Yes

Check outdoor unit terminal

block voltage on each N-R,N-S,N-T

(230Vac nominal)

Check outdoor unit terminal

block voltage on L-N for indoor unit

(230Vac nominal)

Check indoor unit terminal

block voltage on L-N

(230Vac nominal)

Check indoor unit terminal

block voltage on V1-V2

(12Vdc nominal)

Press the On/Off button on

the wired remote controller to operate the

air conditioner

Check DC power voltage of remote

controller(V1,V2)

Check DIP SW in the wired remote controller

Is there any error display on the wired

remote controller

Turn off the breaker and turn it on after 30 seconds

Check AC power source. Reconnect wires correctly.

Check Inner wiring of outdoor unit.

Check cable and connection of wire between

indoor and outdoor unit.

Check Indoor control PCB, Transformer,

and FUSE on PCB and replace one which is broken.

Check cable and connection of wire between

remote controller and indoor unit.

Replace wired remote controller.

Set DIP SW correctly.

Check each item according to error code list.

Check the setting temperature