Haier GE NF80XV Series Service Manual page 23

Troubleshooting Motor Windings
Ensure that motor windings are not damaged by performing
the following tests:
NOTE: If your ohm meter is not an auto-ranging type, set
it to the highest ohm scale (100k ohms or greater) before
performing tests.
Scale
In Words
two megohm - two
2M
million ohms
two hundred kilohm
200k - two hundred
thousand ohms
twenty kilohm --
20k twenty thousand
ohms
two kilohm -- two
2k
thousand ohms
200 two hundred ohm
Table 13. Ohm Meter Range
Figure 10.
31-5000734 Rev. 0
Measurement Range
ohms
0 - 2,000,000
0 - 200,000
0-20,000
0 - 2,000
0 - 200
TEST A
Measure the resistance between each of the three motor
leads (3-pin plug) and the unpainted part of the end shield.
If the winding resistance to ground is <100k ohms,
replace the motor and control module. If the resistance
to ground is >100k, the motor windings are fine.
Proceed to Test B.
TEST B
Use an ohmmeter to measure the motor phase-to-phase
resistance by checking these combinations of the the 3-pin
motor plug. For the purpose of this test, start at either end
of the connector as lead 1.
1. The lead-to-lead resistance across any two leads
should be less than 20 ohms.
2. Each lead-to-lead resistance should be the same.
If the measured resistance is greater than 20 ohms, replace
the motor and control module.
Page 23
Test A
Figure 11.
Test B
Figure 12.