65
Samsung Electronics
6-3-2 Checking Outdoor Controller
1. Making sure the wire connections.
2. Checking AC line
1) Checking FUSE
2) Checking resistance between 'L wire (BRN)' and 'DB01 Live side'
normal value : 190 - 210
Ω
If value is
∞
then check R001.
3) Checking resistance between 'N wire (SKYBLU)' and 'DB01 Newtral side'
normal value : 0 - 0.1
Ω
3. Checking ON/OFF pattern of LED1(Red), LED2(Green), LED3(Yellow)
Apply the power then ALL LEDs are on for about 1 second. then changed to as follow.
■
LED1 (Red) : ALWAYS ON
■
LED2 (Green) : Blinking 4 times a second
(This means communication between 2 micoms IC01 and IC50 is normal)
■
LED3 (Yellow) : OFF
●
In case of another pattern inverter micom detects some hardware trouble or abnormal condition.
Troubleshooting
Yellow
Green
Red
Description
Note
Status indication
OFF
OFF
OFF
Power OFF / No power (SMPS error)
ON
ON
ON
Power on reset ( 1~2 seconds )
If always in this pattern IC01(inverter micom)
has some trouble.
OFF
Blink
ON
Normal operation
Hardware trouble
OFF
OFF
ON
Communication Error between
Main micom and inverter micom
Blink
Blink
ON
Current sensor error
ON
Blink
Blink
DC-LINK sensor error
ON
ON
Blink
AC-Line zero crossing error
After power off this error will display until
DC LINK capacitor discharged.(Max 20sec.)
ON
OFF
Blink
Option error (EEPROM error)
Abnormal condition
OFF
OFF
Blink
Comp. peak current (Over Current)
OFF
Blink
OFF
Comp. starting error
ON
OFF
ON
Comp. rotation error
OFF
ON
Blink
DC-Link voltage error
Blink
ON
OFF
Unit Over current protection
Live side
Newtral side
BD01
DB98-20241A(2)_2 05/1/25 5:07 AM Page 65
