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Troubleshooting
3A0245B 21
Drywall feed pump does not
run at all
Control is commanding motor to
run but motor shaft does not
rotate. Possibly locked rotor con-
dition, an open connection exists
between motor and control, there
is a problem with motor or control
board.
1. Remove pump pin and try to run unit. If motor runs,
check for locked or frozen pump or drive train. If unit
does not run, continue to step 2.
2. Turn unit OFF and disconnect power to drywall feed
pump.
3. Disconnect motor connector(s) from control board
leads. Check that motor connector and control board
connectors are clean and secure.
4. Turn unit OFF and spin motor fan 1/2 turn. Restart
drywall feed pump. If unit runs, replace control
board. If unit does not run, continue to step 5.
5. Perform Spin Test: Test at large 4-pin motor field
connector. Disconnect fluid pump from unit. 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.
Digital display shows E=05
Control board status light
blinks 5 times repeatedly
TYPE OF PROBLEM WHAT TO CHECK HOW TO CHECK
Green Blue Red Black
Green Blue Red Black
Green Blue Red Black
STEP 1:
STEP 2:
STEP 3: