Low-Amperage Error Of Compressor - Samsung AVXCSH023/032/040CE Service Manual

Troubleshooting
4-3-55

: Low-amperage error of Compressor

Outdoor unit display
No signal
Indoor unit display
• Display the error when the CT sensor value of the relevant compressor is below 4A for five hours or more.
Criteria
When it operates as 1A for more than 1 minute, reset timer
• Compressor breakdown/defective CT sensor/OLP Trip
Cause of problem
1. How to check
of CT sensor connector
Are the CT values
during the stop of compressor
Are the values from
an independent ammeter
and that of CT sensor
Does the compressor
stop operating even with
the contact of a magnetic
Are CT values during
operation less than 4A?
Check and complete
4-90
(Compressor 1, Compressor 2, Compressor 3)
Is the resistance
normal?
Yes
all "0"?
Yes
Test operation
identical?
Yes
contactor?
No
No
No
Replace the CT sensor
No
Replace the CT sensor
Connect a separate ammeter
(optional)
No
Replace the CT sensor
Check the magnetic contractor.
Yes
Check if it is OLP Trip. If it is due to a
compressor breakdown, replace
compressor.
If the compressor works fine
Yes
during operation, it does not have
any problem.
If not, the compressor is broken
Samsung Electronics