Service manual

Electrical Specifications Section 7
7-6
Compressor Windings
Function
Draws current during the running cycle.
Check Procedures
NOTE: The compressor must be at room
temperature.
1. Disconnect the wires from the compressor
terminals.
2. Check the resistance between terminals C and
R:
Results of check Action
Resistance See step 5
No resistance
1. Verify external
overload is closed.
2. Run winding is open;
replace compressor.
3. Check the resistance between terminals C and S:
Results of check Action
Resistance See step 5
No resistance
Start winding is opened;
replace compressor.
4. Check the resistance between terminal C and the
compressor shell:
Results of check Action
Resistance
Compressor is grounded;
replace compressor
No resistance
Compressor is not
grounded - OK
5. Check the resistance of the windings. The
resistance reading between terminals S and R
should equal the readings between terminals C
and R, and terminals C and S added together:
S to R = C to R + C to S