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Repair / Réparation / Reparación
313314B 39
Electric Motor Will Not Shut Off
1. Relieve Pressure, page 15. Leave prime valve
open and power switch OFF.
2. Remove control box cover so the control board
status light can be viewed if available.
Troubleshooting Procedure
Sprayer does not run at all Check to see if control board power
module is operating at a high
temperature. Module is likely too hot
or motor is running too hot.
1. Make sure motor air intake is not blocked.
2. Make sure control board is properly connected
to back plate and that conductive thermal paste
is used on power components.
3. Replace control board.
4. Replace motor.
Digital display shows E=10
Control board status light blinks
10 times repeatedly
TYPE OF PROBLEM
WHAT TO CHECK
If check is OK, go to next check
WHAT TO DO
When check is not OK, refer to this column
Plumb pressure gauge into paint
hose, plug sprayer in, and turn power
switch ON. Does sprayer reach or
exceed its maximum pressure?
Unplug the transducer from control
board. Does motor stop running?
Bad transducer. Replace and test
with a new one.
Replace the control board.
Mechanical problem: See the proper
fluid pump manual for the sprayer for
further trouble shooting procedures.
NO
NO
YES
YES