Chapter 8 Compressor
1. Inverter Linear Compressor
Check for defect of the inverter linear compressor in following orders:
1-1. Method to Measure Compressor Winding Resistance
Normal Determination Criteria
The compressor winding resistance can be determined as normal if resistance values show the values as described in below figure
when measuring resistance values of the harness (connected with compressor) to connect Connect201(CON201) of the main PWB
as shown in below figure.
Defect Determination Criteria
Check connection status of the Compressor Connection Harness-P(Lead Wire) which is located at the M/C room where resistance
values measured at the CON201 Housing are shown as infinite or several hundred . Separate connecting wires of the M/C room
(A-point in Figure) and then measure resistance values at the connecting wires again. The compressor can be determined as
normal if resistance values are shown as standard resistance value.
Check connection status of a harness.
(Defect at M/C room connection contact or CON201 Housing contact, short-circuit of harness)
Where resistance values measured at A-point are also shown as infinite or several hundred , disassemble a cover PTC of the
compressor terminal and check the terminal connecting status at the B-point in Figure.
Where there is no failure in the wiring status and resistance values are shown as infinite or several hundred , it may be
determined as defect of compressor.
Since if there is no failure in resistance values of the compressor, it may be defective Main PWB, replace the Main PCB and check
for normal operation of the compressor.
When determining any defect through resistance measuring, it can be determined as normal if resistance values show as descried
in the below figure by measuring ① power and ③ common terminal
resistance values are measured when measuring ① power but measuring is meaningless since they cannot become
criteria for determining defect (measuring not required).
Caution
1. Be sure to powering off the refrigerator and measure after several minutes has passed.
2. If not accurately measuring resistance, wrong determination may be guided. (Difference of resistance value of several W or so may
occur.)
COMPRESSOR
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