Thetford NR740 - Manual (Page 4)

DC0040(K), DC0051(K), DE0040, DE0051, DE0240T, DE0251T,
DC0740(X), DE0740(X), DC0751(X), DE0751(X) Models
Refrigerator Service Manual 4
Troubleshooting - Procedure B
Compressor Resistance
Measure
Compressor
Resistance.
See Figure 3.
0 
 
1.4 – 3.5  Normal
Internal
Compressor
Failure
See
Procedure C
Change
Cooling Unit
Note: Perform procedure at room temperature.
AR
T0
19
47
Measuring the Compressor Resistance
Turn the temperature control to the "Off" position. 1.
Remove the black wire to the compressor. 2.
Measure the resistance of the compressor between point 3.
A and point B. Refer to Figure 3.
Figure 3. Measuring Compressor Resistance
AR
T01958
B A
Compressor Resistance