Samsung APH180CD, Service Manual

Page: 19 / 51

Samsung Electronics
5-6
Troubleshooting
5-3-4 When the remocon does not Operate
1) Trouble case
1
When the voltage of the battery for re m o t e - c o n t roller is low.
2
The receiving mode of panel PCB re m o t e - c o n t roller is bad.
2) Check items
1
The beep sounds when the set receives the signal of re m o t e - c o n t ro l l e r.
3) Check sequence
Tu rn off the power, and then turn it on in 5 seconds.
When pressing the start/stop key on the panel, does the
actual temperture display on the temp. disply part and then
does the operation start?
When pressing the start/stop key on the panel, does the
indoor unit make the beep sound and then does the
operation stop?
Is the battery voltage DC 2.5V and higher?
Is it normal when pressing the start/stop button after
replacement of remote controller?
Is the output wave of no. 51of MICOM(IC01)spherical?
(Check the wave when remote controller receives the signal.)
Check the MICOM(01)and replace it.
.
Go to item when it is not power on.
Replace the battery.
N
Y
N
Y
N
Y
N
Y
N
Y
Normal operation
Replace the remote controller.
Replace the receiving module.