Samsung AG026MN1DEH/EU Service Manual page 58

■ 4-Way & compact 4-Way cassette type
▶ Error detection and restart
■ 1. If an error occurs during operation, it will be indicated by a flickering LED and all operations excluding the LED will stop
■ 2. When restarting with the remote control or switch, the error mode will be determined after normal operation.
▶ LED lamp display during error detection
Abnormal operation
Indoor temperature Sensor error (Open/Short)
1. Eva‑In Sensor error (Open/short)
2. Eva‑out Sensor error (Open/short)
Indoor Fan error
1. Outside temperature Sensor error
1. If there is no communication between FCU ↔ repeater for
2 minutes
2. Communication Error received from repeater
3. Repeater Tracking 3 minute Error
4. Communication error after Tracking due to unmatching
number of installed units
5. Error due to duplicated communication address
6. Communicated address unconfirmed,communication
error for outdoor units excluding the ones above
Self‑diagnosis error display
Water temperature increase prevention error (product will
stop at high water temperatures of more than 65℃)
Floating s/w secondary detection
EEPROM error
EEPROM OPTION error
● On ◑ Flicker × Off
※ All displays will be turned off if operation is stopped during error display.
※ If restarting, the error will be re‑determined after initial normal operations and error will be displayed again.
※ If error E108 occurs, reset the address and then reset the system.
Ex) If both #1 and #2 fan coil units are set as 5, #1 will change to #5 and E108, A002 will be displayed on #2
Oper‑
Error
ation
code
E121 X
E122
◑
E123
E154 X
E221
◑
E101
E102
E202
X
E201
E108
E109
E128 X
E153 ×
E162
◑
E163
◑
4-16
Trouble shooting
LED display
Defrost Timer
X
◑
X
◑
X
◑
X
◑
◑ ◑
◑ ◑
×
◑
◑ ◑
◑ ◑
Filter
X
X
X
X
X
◑
◑
◑
◑