Samsung AG026MN1DEH/EU Service Manual page 59

■ Circular type cassette type
▶ LED lamp display during error detection
Abnormal operation
Power RESET (flickering every 2 seconds)
Indoor temperature Sensor Error (Open/short)
Eva‑In Sensor Error (Open/short)
Eva‑out Sensor Error (Open/short)
Indoor Fan Error
Water temperature increase prevention error (product will stop at high
water temperatures of more than 65℃)
Self‑diagnosis error
If there is no communication between FCU ↔ repeater for 2 minutes
Communication Error received from repeater
Repeater Tracking 3 minute Error
Communication error after Tracking due to unmatching number of
installed units
Error due to duplicated communication address (NASA Only)
Communicated address unconfirmed (NASA Only)
Communication error excluding ones above
Floating s/w secondary detection
EEPROM ERROR
EEPROM OPTION ERROR
Fan coil unit incompatibility Error
Thermal Fuse Open Error
Error
code
blue
‑
E121
E122
E123
E154
E128
E101
E102
E202
E201
E108
E109
E153
E162
E163
E164
E198
4-17
Trouble shooting
LED display
Ice Yellow
Blue
green
× ×
◑
× × ×
× ×
◑
× ×
◑
× ×
◑
× ×
◑
×
◑ ◑
×
◑ ◑
× ×
◑
×
◑ ◑
Red
×
◑
◑
◑
×
×
×
◑
◑
×