5-3COMPRESSOR & INVERTER
Electrical Shock Hazard
Disconnect power before servicing.
Replace all panels before operating.
Failure to do so can result in death or electrical shock.
Refer to page 4-16 & 4-17 for the procedure for
servicing the compressor and inverter.
1. Run the diagnostics tests (see page 6-1)
and check for the proper operation of the
compressor in step 05.
NOTE: If the compressor does not operate
perform the following steps.
2. Connect power to the refrigerator and
allow it to enter the “cooling” mode.
3. While the refrigerator is in the cooling
mode, the inverter and main control board
voltages should be as shown in the chart
below.
Pins
4. Set the voltmeter to read the voltages
shown in the chart.
• If the 3 to 6 volts DC is not present at
the inverter red/white and red wires,
check P7-3 and P7-8 on the main con-
trol board for 3 to 6 volts DC. If the volt-
age is not present, replace the main
control board.
• If the 3 to 6 volts DC is present at the
main control board, continue with step 5.
5. Unplug the refrigerator or disconnect the
power.
6. Disconnect the wire connector going to
the compressor.
7. Set the ohmmeter to the R x 1 scale.
8. Touch the meter leads to any two pins.
The meter should indicate approximately
9 to 10 Ω. Check between each set of pins
to test all three windings.
9. Set the ohmmeter to the highest scale.
10. Touch one meter lead to the cabinet ground
and the other lead to each of the three
compressor terminals. The meter should
indicate an open circuit (infinite).
COMPONENT INPUT/ OUTPUT LOCATIONS VOLTAGES
Red/White & Red Wires 3 To 6 Volts DC
Black & White Wires 120 Volts AC
Main Control Board P7-3 (Red) & P7-8 (Red/White) 3 To 6 Volts DC
Inverter