Troubleshooting
122
Samsung Electronics
4-4-75
: Compressor Excess Current Error
1. Cause of problem
Is the CT sensor connector
resistance normal?
Are all the CT values 0 when
the compressor is stopped?
Is the CT value
measured at 20A or more during
the operation?
Is the measured value
from the separate ammeter the
same as the CT sensor value?
Test Operation
Inspection Complete
Change CT sensor.
Change CT sensor.
Change CT sensor.
Breakdown of Compressor: Change
compressor.
Connect a separate ammeter
(optional).
No
No
No
No
Yes
Yes
Yes
Yes
Outdoor Unit Display
Indoor Unit Display
×(Operation) (Reservation) (Blast) (Filter) ×(Defrost)
Judgment Method
• Error displayed if the CT sensor value of the relevant compressor is 20A or more and is maintained for more
than 3 seconds.
Special Cause
• Breakdown of compressor/Faulty CT sensor
