Sunlight Supply Samsung Programmable Thermostat for Split Systems - Manual (Page 69)

Samsung Electronics 12-2
Communication error
Indoor display ƻ ሱ ሱ Communication error
Outdoor display ሱ م م 1min. Time out Comm.
ل ل م
ل م م
1.Checklist :
1) Is the cable between the indoor unit and outdoor unit connected correctly?
2) Isn't the power cable and communication cable cross?
2. Troubleshooting procedure
Abnormal Communication
Is the communica Ɵon error
occurred again?
Restart a Ōer power oī.
Terminate the service.
NO
Is the connec Ɵon of power cable
and communica Ɵon cable normal?
Correct the wrong cable.
NO
YES
Exchange the indoor unit PBA.
Is the communica Ɵon error
occurred again?
Terminate the service.
NO
YES
Exchange the outdoor unit PBA.
YES
Is the power is normal?
(check the LED Lamp)
Exchange the PBA of no power unit
NO
YES