Motor Control Board Diagnostics
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3A2817A
Motor Control Board Diagnostics
* Pro 230ES only
**Pro 270ES only
•
Before repair,
relieve pressure
, page 9.
•
Keep a new transducer on hand to use for test.
•
No display does not mean the sprayer is not pres-
surized.
NOTICE
Do not allow sprayer to develop fluid pressure with-
out transducer installed. Leave drain valve open if
test transducer is used.
1. Remove screws (12) and cover (50).
2. Turn ON/OFF switch ON.
A display may be temporarily attached for
diagnostic purposes.
4 Observe LED operation and reference following
table:
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DISPLAY
LED
BLINKS
SPRAYER STATUS
INDICATES
WHAT TO DO
No Display
Never blinks Sprayer stops. Power is not
applied. Sprayer must be
pressurized.
Loss of power.
Check power source. Relieve pressure before
repair disassembly.
psi/bar/MPa Once
Sprayer is pressurized. Power
is applied. (Pressure varies
with tip size and pressure
control setting.)
Normal operation
Do nothing
E=02
Two times
repeatedly
Sprayer may continue to run.
Power is applied.
Run away pressure. Pres-
sure greater than 4500 psi
(310 bar, 31 MPa) or dam-
aged pressure transducer
Replace motor control board or pressure
transducer.
E=03
Three times
repeatedly
Sprayer shuts down and LED
continues to blink three times
repeatedly.
Pressure transducer is
faulty or missing
Check transducer connection. Open drain
valve. Substitute new transducer for trans-
ducer in sprayer. If sprayer runs, replace
transducer.
E=04*
Four times
repeatedly
Sprayer shuts down and LED
continues to blink four times
repeatedly. Power is applied.
Line voltage is too high
Check for voltage supply problems.
E=05
Five time
repeatedly
Sprayer does not start or
stops and LED continues to
blink five times repeatedly.
Power is applied.
Motor fault
Check for locked rotor, shorted wiring or dis-
connected motor. Repair or replace failed
parts.
E=06
Six times
repeatedly
Sprayer stops and LED blinks
six times repeatedly. Power is
applied.
Motor is too hot or there is
a fault in the motor thermal
device.
Allow sprayer to cool. If sprayer runs correctly
when cool, check motor fan and function and
air flow. Keep sprayer in cool location. If
sprayer does not run when cool and contin-
ues to blink six times, replace motor.
---
Power is applied.
Pressure less than 200 psi
(14 bar, 1.4 MPa).
Increase pressure if desired. Drain valve may
be open.
E=08*
Eight times
repeatedly
Sprayer shuts down and LED
blinks 8 times repeatedly.
Power is applied.
Line voltage is too low.
Check for voltage supply problems.
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