Troubleshooting
3A7656C
31
5.
Perform Spin Test: Test at large
4-pin motor field connector.
Disconnect fluid Pump from
sprayer. Test motor by placing a
jumper across pins 1 & 2. Rotate
motor fan at about 2 revolutions
per second. A cogging
resistance to motion should be
felt at the fan. The motor should
be replaced if no resistance is
felt. Repeat for pin combinations
1 & 3 and 2 & 3. Pin 4 (the green
wire) is not used in this test. If all
spin test is positive, continue to
step 6.
6.
Perform Field Short Test: Test
at large 4-pin motor field
connector. There should not be
continuity from pin 4, the ground
wire, and any of the remaining
3 pins. If motor field connector
tests fail, replace motor.
7.
Reconnect motor connector(s)
to control board socket(s).
Connect power, turn ON/OFF
Switch
ON
and control knob to
1/2 turn clockwise. If motor does
not run, replace control
assembly.
Problem
What to Check
How to check
GRN BLU R BLK
GRN BLU R BLK
STEP 2:
STEP 3:
STEP 1:
GRN BLU R BLK
