Samsung MH026FNCA Service Manual page 104

Basic Check Flow(cont.)
Preparation : multimeter (AC voltage, DC voltage, Resistance)
Consult Error Code
Is the error code related to
communication ?
No
Is the error code related to
cycle protection ?
No
Are some of the indoor units'
operation mode (cooling/heating)
different from others ?
No
Error related to outdoor controller except
temperature sensor and communication
between indoor unit and outdoor unit ?
No
See Error Code Table and Check
"Main checking point"
Samsung Electronics
Check point
, , ,
, ,
• Cable wiring between indoor and outdoor
• Communication wire socket check on
outdoor unit controller PCB
,
• Cycle check
• Pipe matching
, ,
Each indoor unit operation mode
-- ,
Consult LED pattern on wiring diagram on
outdoor controller
Troubleshooting
9-13